Bump version to 3.7.0

Merge pull request #1649 from jerch/fix_search_addon
Fix broken search addon
2018-09-08 02:38:05 -07:00 · 2018-09-02 22:00:25 +02:00 · 2018-09-02 21:46:44 +02:00 · 2018-09-02 21:46:20 +02:00 · 2018-09-02 21:38:42 +02:00 · 2018-09-02 21:19:19 +02:00
158 changed files with 18616 additions and 17594 deletions
@@ -1,11 +0,0 @@
-<!-- Enter your issue description here -->
-
-## Details
- Browser and browser version: 
- OS version: 
- xterm.js version: 
-
-### Steps to reproduce
-
-1. 
-2. 
@@ -0,0 +1,17 @@
+---
+name: Bug report
+about: Create a bug report
+---
+
+<!-- ⚠️ Please search existing issues to avoid creating duplicates. ⚠️ -->
+<!-- Describe the bug here. -->
+
+## Details
+- Browser and browser version: 
+- OS version: 
+- xterm.js version: 
+
+### Steps to reproduce
+
+1. 
+2. 
@@ -0,0 +1,7 @@
+---
+name: Feature request
+about: Suggest a feature or enhancement
+---
+
+<!-- ⚠️ Please search existing issues to avoid creating duplicates. ⚠️ -->
+<!-- Describe the enhancement here. -->
@@ -0,0 +1,8 @@
+---
+name: Question
+about: The issue tracker is not for questions. Please ask questions on https://stackoverflow.com/questions/tagged/xtermjs or https://gitter.im/sourcelair/xterm.js.
+---
+
+🛑 The issue tracker is not for questions 🛑
+
+If you have a question, please ask it on https://stackoverflow.com/questions/tagged/xtermjs or https://gitter.im/sourcelair/xterm.js.
@@ -15,14 +15,12 @@ build/
 .vscode/
 .DS_Store
 fixtures/typings-test/*.js
+package-lock.json

 # Directories needed for code coverage
-/coverage/
+coverage/
+.nyc_output/

-# Keep legacy files out of the repo, this can be removed when we merge v3 into master
+# Keep bundled code out of Git
 dist/
-src/utils/TestUtils.ts
-src/xterm.js
-
-# Keep the demo builds out of Git
 demo/dist/
@@ -1,16 +1,48 @@
-node_modules/
-*.swp
-.lock-wscript
-lib/*.test.js
-lib/*.test.js.map
+# Blacklist - exclude everything except npm defaults such as LICENSE, etc
+*
+!*/
+
+# Whitelist - entries to be included must be negated with "!"
+!*.js
+!*.json
+
+# Whitelist - dist/
+!dist/**/*.js
+!dist/**/*.js.map
+
+!dist/**/*.css
+
+# Whitelist - lib/
+!lib/**/*.d.ts
+
+!lib/**/*.js
+!lib/**/*.js.map
+
+!lib/**/*.css
+
+# Whitelist - src/
+!src/**/*.ts
+!src/**/*.d.ts
+
+!src/**/*.js
+!src/**/*.js.map
+
+!src/**/*.css
+
+# Whitelist - typings/
+!typings/*.d.ts
+
+# Blacklist - (normal behavior) these will override any whitelist
+*.test.ts
+*.test.d.ts
+*.test.js
+*.test.js.map
 lib/test/
-Makefile.gyp
-*.Makefile
-*.target.gyp.mk
-*.node
-example/*.log
+
 docs/
-npm-debug.log
 /.idea/
-.env
+.vscode/
 build/
+fixtures/
+coverage/
+demo/
@@ -0,0 +1 @@
+package-lock=false
@@ -1,20 +0,0 @@
-language: node_js
-os:
-  - linux
-  - osx
-node_js:
-  - 6
-before_install:
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo add-apt-repository -y ppa:ubuntu-toolchain-r/test ; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get -qq update ; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then sudo apt-get -qq install g++-4.8 ; fi
-  - if [[ "$TRAVIS_OS_NAME" == "linux" ]]; then export CXX=g++-4.8 ; fi
-  - npm install -g npm@5.1.0
-env:
-  matrix:
-    - NPM_COMMAND=lint
-    - NPM_COMMAND=test
-notifications:
-  email: false
-script: npm run $NPM_COMMAND
-after_success: npm run coveralls
@@ -1,23 +0,0 @@
-{
-  "version": "0.2.0",
-  "configurations": [
-    {
-      "type": "node",
-      "request": "launch",
-      "name": "Mocha Tests",
-      "cwd": "${workspaceRoot}",
-      "runtimeExecutable": "${workspaceRoot}/node_modules/.bin/mocha",
-      "windows": {
-        "runtimeExecutable": "${workspaceRoot}/node_modules/.bin/mocha.cmd"
-      },
-      "runtimeArgs": [
-        "--colors",
-        "--recursive",
-        "${workspaceRoot}/lib"
-      ],
-      "sourceMaps": true,
-      "outFiles": [ "${workspaceRoot}/lib/**/*.js" ],
-      "internalConsoleOptions": "openOnSessionStart"
-    }
-  ]
-}
@@ -1,8 +0,0 @@
-{
-    "search.exclude": {
-        "**/node_modules": true,
-        "**/dist": true,
-        "**/build": true,
-        "**/lib": true
-    }
-}
@@ -1,12 +1,18 @@
 List of xterm.js contributors. Updated before every release.

+7PH <b.raymond@cern.ch>
+7PH <b.raymond@protonmail.com>
+Adrian Labbé <adrilabbelol@gmail.com>
 Aleksandr Andrienko <aandrienko@codenvy.com>
 Aleksandr Andriienko <oandriie@redhat.com>
 Alessandro Nadalin <alessandro.nadalin@gmail.com>
 Alexander Olsson <noseglid@gmail.com>
+Alexandre Petit-Pas <petitpasalexandre@gmail.com>
 Alexey Kontsevoy <alexey@gravitational.com>
+Andres Mejia <amejia004@gmail.com>
 Anish Athalye <me@anishathalye.com>
 Anthony Lapenna <lapenna.anthony@gmail.com>
+Antonin Stefanutti <antonin@stefanutti.fr>
 Antonis Kalipetis <akalipetis@sourcelair.com>
 Anton Skshidlevsky <meefik@gmail.com>
 Anton Yurovskykh <anton.yurovskykh@gmail.com>
@@ -15,10 +21,14 @@ Austin Robertson <austinrobertson@gmail.com>
 ayapi <colors.aya@gmail.com>
 Ben Hall <ben@benhall.me.uk>
 Benjamin Fischer <benjamin.fischer@rwth-aachen.de>
+Benjamin Raymond <b.raymond@cern.ch>
+Benjamin Woodruff <github@benjam.info>
 Bill Church <billchurch@users.noreply.github.com>
 Bob Reid <bobreid@Bobs-MacBook-Pro.local>
 bottleofwater <nison.mael+bottleofwater@gmail.com>
+Brandon Bayer <b@bayer.ws>
 Brian Mock <brian@mockbrian.com>
+Bruno Ribeiro <b.m.fernandes.ribeiro@gmail.com>
 Bruno Ribeito <b.m.fernandes.ribeiro@gmail.com>
 Carson Anderson <carson@betterservers.com>
 CHaBou <chabup@delean.fr>
@@ -26,7 +36,9 @@ Christian Budde Christensen <budde377@gmail.com>
 Christof Marti <chrmarti@microsoft.com>
 Christopher Jeffrey <chjjeffrey@gmail.com>
 coderaiser <mnemonic.enemy@gmail.com>
+Damien Tournoud <damien@platform.sh>
 Dan Brown <jdanbrown@gmail.com>
+Daniel Griffen <dagriffe@microsoft.com>
 Daniel Griffen <daniel@griffen.io>
 Daniel Imms <daimms@microsoft.com>
 Daniel Risacher <drisacher@gmail.com>
@@ -38,6 +50,7 @@ Edgar Andrés Margffoy Tuay <andfoy@gmail.com>
 Elliot Saba <staticfloat@gmail.com>
 Exile <exile@chamber.ee>
 Felipe Gasper <felipe@felipegasper.com>
+Felix <30559812+felixse@users.noreply.github.com>
 ficristo <ficristo.work@gmail.com>
 Gary Ritchie <gary@rstudio.com>
 hiro-su <h.sugipon@gmail.com>
@@ -46,41 +59,67 @@ imoses <ido@twiggle.com>
 InDieTasten <indietasten@gmail.com>
 irokas <akasidiari@inf.uth.gr>
 Jakob Gillich <jakob@gillich.me>
+Jan Kuri <jkuri88@gmail.com>
 Jean Bruenn <himself@jeanbruenn.info>
+Jeff Principe <princjef@gmail.com>
 Jeremy Danyow <jedanyow@microsoft.com>
+Jianhui Zhao <jianhuizhao329@gmail.com>
 Joao Moreno <jomo@microsoft.com>
 Joao Moreno <mail@joaomoreno.com>
 Johannes Zellner <johannes@nebulon.de>
+Jon Austin <jon.i.austin@gmail.com>
+Jon Kohler <jon@nutanix.com>
 Jon Masters <jon.masters@sky.com>
 Jörg Breitbart <jerch@rockborn.de>
+Jose Anton <roke22@gmail.com>
+jpoth <poth.john@gmail.com>
+Justin Luk <jluk@users.noreply.github.com>
 Justin Mecham <justin@mecham.me>
 Kirill Merkushev <lanwen@yandex.ru>
+Krasimir Tsonev <krasimir@outset.ws>
+Ledion Bitincka <lbitincka@gmail.com>
+Linus Unnebäck <linus@folkdatorn.se>
 Luca <LucaT1@users.noreply.github.com>
 Lucian Buzzo <lucian.buzzo@gmail.com>
 Lukas Drgon <lukas.drgon@gmail.com>
+Lukas Geiger <lukas.geiger94@gmail.com>
 Maël Nison <nison.mael@gmail.com>
 Marc Dumais <marc.dumais@ericsson.com>
+Marek Libra <mlibra@redhat.com>
+Markus F.X.J. Oberhumer <markus@oberhumer.com>
 Martin Chloride <i@martincl2.me>
 Martin Koppehel <martin.koppehel@st.ovgu.de>
 Martin Wang <jiahaow@ca.ibm.com>
 Matt Bierner <matb@microsoft.com>
+Matthew James <matthew.d.james87@gmail.com>
 Michael Irwin <mikesir87@gmail.com>
 Mikko Karvonen <mikko.karvonen@arm.com>
 mofux <t.zilz@mofux.org>
+muji <muji@tmpfs.org>
 Nicolas Ramz <nicolas.ramz@gmail.com>
 npezza93 <npezza93@gmail.com>
 Oleksandr Andriienko <oandriie@redhat.com>
 Paris Kasidiaris <pariskasidiaris@gmail.com>
 Paris Kasidiaris <paris@sourcelair.com>
+Peng Xiao <pengxiao@outlook.com>
 Peter Baumgarten <me@peterbaumgarten.com>
+Philip Olson <philip.olson@protonmail.ch>
+PowerHat <31401273+7PH@users.noreply.github.com>
+PowerHat <b.raymond@protonmail.com>
+pro-src <34285059+pro-src@users.noreply.github.com>
+pro-src <rodneyd.teal@gmail.com>
 Rick Baker <rick@ricktbaker.com>
 runarberg <runar@greenqloud.com>
+Saad Malik <simfox3@gmail.com>
 Samuel Williams <samuel.williams@oriontransfer.co.nz>
 Saswat Das <saswatds@users.noreply.github.com>
 Saul Costa <saul@codevolve.com>
+Segev Finer <segev208@gmail.com>
 Shuanglei Tao <tsl0922@gmail.com>
+sitzmar <sitzmar@gmail.com>
 Steven Silvester <steven.silvester@ieee.org>
 stuicey <stuicey@users.noreply.github.com>
+Sven-Hendrik Haase <svenstaro@gmail.com>
 t-amqi <umberos@gmail.com>
 Thanasis Daglis <thanasis@sourcelair.com>
 thomas <thomas@kreativkonzentrat.de>
@@ -88,5 +127,8 @@ Thomas Zilz <t.zilz@mofux.org>
 Tine Jozelj <tine.jozelj@outlook.com>
 Tyler Jewell <tjewell@codenvy.com>
 Vincent Woo <me@vincentwoo.com>
+Viraj Sinha <virajosinha@gmail.com>
 yutaka <shigure@refy.net>
 YuviPanda <yuvipanda@gmail.com>
+ZHAO Xudong <zxdong@gmail.com>
+赵雪珂 <zhaoxueke@onething.net>
@@ -0,0 +1,73 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+education, socio-economic status, nationality, personal appearance, race,
+religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting [@Tyriar](https://twitter.com/Tyriar) or [@pariskasid](https://twitter.com/pariskasid) on Twitter. All
+complaints will be reviewed and investigated and will result in a response that
+is deemed necessary and appropriate to the circumstances. The project team is
+obligated to maintain confidentiality with regard to the reporter of an incident.
+Further details of specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
@@ -23,7 +23,7 @@ opening an issue, read these pointers.
 - Mention precisely what went wrong. What did you expect to happen? What happened instead? Describe the
  exact steps a maintainer has to take to make the problem occur.

- If the problem can not be reproduced in the [demo of xterm.js](README.md#demo), please provide an HTML document that demonstrates the problem.
+- If the problem can not be reproduced in the [demo of xterm.js](https://github.com/xtermjs/xterm.js/wiki/Contributing#running-the-demo), please provide an HTML document that demonstrates the problem.

 - Be polite. Issues with an indignant or belligerent tone tend to be moved to the
  bottom of the pile.
@@ -33,6 +33,7 @@ opening an issue, read these pointers.
 - Make sure you have a [GitHub account](https://github.com/join)
 - Fork [xterm.js](https://github.com/sourcelair/xterm.js/)
  ([how to fork a repo](https://help.github.com/articles/fork-a-repo))
+- Get the [xterm.js demo](https://github.com/xtermjs/xterm.js/wiki/Contributing#running-the-demo) running
 - Make your changes
 - If your changes are easy to test or likely to regress, add tests. Tests go into `test`, directory.
 - Follow the general code style of the rest of the project (see below).
@@ -1,4 +1,4 @@
-FROM node:6
+FROM node:8
 MAINTAINER Paris Kasidiaris <paris@sourcelair.com>

 # Set the working directory
@@ -16,4 +16,4 @@ RUN npm install
 COPY . /usr/src/app

 # Run the tests and build, to make sure everything is working nicely
-RUN npm run build && npm run test
+RUN npm run build && npm run webpack && npm run test
@@ -1,3 +1,4 @@
+Copyright (c) 2017-2018, The xterm.js authors (https://github.com/xtermjs/xterm.js)
 Copyright (c) 2014-2016, SourceLair Private Company (https://www.sourcelair.com)
 Copyright (c) 2012-2013, Christopher Jeffrey (https://github.com/chjj/)

@@ -1 +1,2 @@
 web: npm start
+webpack: npm run watch
@@ -1,6 +1,9 @@
 # [![xterm.js logo](logo-full.png)](https://xtermjs.org)

-[![xterm.js build status](https://api.travis-ci.org/xtermjs/xterm.js.svg)](https://travis-ci.org/xtermjs/xterm.js) [![Coverage Status](https://coveralls.io/repos/github/sourcelair/xterm.js/badge.svg)](https://coveralls.io/github/sourcelair/xterm.js) [![Gitter](https://badges.gitter.im/sourcelair/xterm.js.svg)](https://gitter.im/sourcelair/xterm.js?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge) [![jsDelivr Hits](https://data.jsdelivr.com/v1/package/npm/xterm/badge?style=rounded)](https://www.jsdelivr.com/package/npm/xterm)
+[![VSTS Build status](https://xtermjs.visualstudio.com/_apis/public/build/definitions/3e323cf7-5760-460d-af64-ee5675baf366/1/badge)](https://xtermjs.visualstudio.com/xterm.js/_build/index?definitionId=1)
+[![Coverage Status](https://coveralls.io/repos/github/xtermjs/xterm.js/badge.svg?branch=master)](https://coveralls.io/github/xtermjs/xterm.js?branch=master)
+[![Gitter](https://badges.gitter.im/sourcelair/xterm.js.svg)](https://gitter.im/sourcelair/xterm.js?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge)
+[![jsDelivr Hits](https://data.jsdelivr.com/v1/package/npm/xterm/badge?style=rounded)](https://www.jsdelivr.com/package/npm/xterm)

 Xterm.js is a terminal front-end component written in JavaScript that works in the browser.

@@ -24,7 +27,7 @@ It enables applications to provide fully featured terminals to their users and c
 First you need to install the module, we ship exclusively through [npm](https://www.npmjs.com/) so you need that installed and then add xterm.js as a dependency by running:

 ```
-npm install
+npm install xterm
 ```

 To start using xterm.js on your browser, add the `xterm.js` and `xterm.css` to the head of your html page. Then create a `<div id="terminal"></div>` onto which xterm can attach itself.
@@ -39,9 +42,9 @@ To start using xterm.js on your browser, add the `xterm.js` and `xterm.css` to t
    <body>
      <div id="terminal"></div>
      <script>
-      	var term = new Terminal();
+        var term = new Terminal();
        term.open(document.getElementById('terminal'));
-        term.write('Hello from \033[1;3;31mxterm.js\033[0m $ ')
+        term.write('Hello from \x1B[1;3;31mxterm.js\x1B[0m $ ')
      </script>
    </body>
  </html>
@@ -57,7 +60,11 @@ The proposed way to load xterm.js is via the ES6 module syntax.
 import { Terminal } from 'xterm';
 ```

-*Note: There are currently no typings for addons so you will need to upcast if using TypeScript, eg. `(<any>xterm).fit()`.*
+### API
+
+The full API for xterm.js is contained within the [TypeScript declaration file](https://github.com/xtermjs/xterm.js/blob/master/typings/xterm.d.ts), use the branch/tag picker in GitHub (`w`) to navigate to the correct version of the API.
+
+Note that some APIs are marked *experimental*, these are added so we can experiment with new ideas without committing to support it like a normal semver API. Note that these APIs can change radically between versions so be sure to read release notes if you plan on using experimental APIs.

 ### Addons

@@ -76,6 +83,29 @@ var xterm = new Terminal();  // Instantiate the terminal
 xterm.fit();                 // Use the `fit` method, provided by the `fit` addon
 ```

+You will also need to include the addon's CSS file if it has one in the folder.
+
+#### Importing Addons in TypeScript
+
+There are currently no typings for addons if they are accessed via extending Terminal prototype, so you will need to upcast if using TypeScript, eg. `(<any>xterm).fit()`.
+
+Alternatively, you can import addon function and enhance the terminal on demand. This would have better typing support and is friendly to treeshaking. E.g.:
+
+```typescript
+import { Terminal } from 'xterm';
+import { fit } from 'xterm/lib/addons/fit/fit';
+const xterm = new Terminal();
+
+// Fit the terminal when necessary:
+fit(xterm);
+```
+
+#### Third party addons
+
+There are also the following third party addons available:
+
+- [xterm-webfont](https://www.npmjs.com/package/xterm-webfont)
+
 ## Browser Support

 Since xterm.js is typically implemented as a developer tool, only modern browsers are supported officially. Here is a list of the versions we aim to support:
@@ -88,6 +118,10 @@ Since xterm.js is typically implemented as a developer tool, only modern browser

 Xterm.js works seamlessly in Electron apps and may even work on earlier versions of the browsers but these are the browsers we strive to keep working.

+## API
+
+The current full API documentation is available in the [TypeScript declaration file on the repository](https://github.com/xtermjs/xterm.js/blob/master/typings/xterm.d.ts), switch the tag (press `w` when viewing the file) to point at the specific version tag you're using.
+
 ## Real-world uses
 Xterm.js is used in several world-class applications to provide great terminal experiences.

@@ -110,7 +144,7 @@ Xterm.js is used in several world-class applications to provide great terminal e
 - [**Selenoid UI**](https://github.com/aerokube/selenoid-ui): Simple UI for the scallable golang implementation of Selenium Hub named Selenoid. We use XTerm for streaming logs over websockets from docker containers.
 - [**Portainer**](https://portainer.io): Simple management UI for Docker.
 - [**SSHy**](https://github.com/stuicey/SSHy): HTML5 Based SSHv2 Web Client with E2E encryption utilising `xterm.js`, SJCL & websockets.
- [**JupyterLab**](https://github.com/jupyterlab/jupyterlab): An extensible 
+- [**JupyterLab**](https://github.com/jupyterlab/jupyterlab): An extensible
 computational environment for Jupyter, supporting interactive data science and scientific computing across all programming languages.
 - [**Theia**](https://github.com/theia-ide/theia): Theia is a cloud & desktop IDE framework implemented in TypeScript.
 - [**Opshell**](https://github.com/ricktbaker/opshell) Ops Helper tool to make life easier working with AWS instances across multiple organizations.
@@ -118,34 +152,28 @@ computational environment for Jupyter, supporting interactive data science and s
 - [**Script Runner**](https://github.com/ioquatix/script-runner): Run scripts (or a shell) in Atom.
 - [**Whack Whack Terminal**](https://github.com/Microsoft/WhackWhackTerminal): Terminal emulator for Visual Studio 2017.
 - [**VTerm**](https://github.com/vterm/vterm): Extensible terminal emulator based on Electron and React.
+- [**electerm**](http://electerm.html5beta.com): electerm is a terminal/ssh/sftp client(mac, win, linux) based on electron/node-pty/xterm.
+- [**Kubebox**](https://github.com/astefanutti/kubebox): Terminal console for Kubernetes clusters.
+- [**Azure Cloud Shell**](https://shell.azure.com): Azure Cloud Shell is a Microsoft-managed admin machine built on Azure, for Azure.
+- [**atom-xterm**](https://atom.io/packages/atom-xterm): Atom plugin for providing terminals inside your Atom workspace.
+- [**rtty**](https://github.com/zhaojh329/rtty): A reverse proxy WebTTY. It is composed of the client and the server.
+- [**Pisth**](https://github.com/ColdGrub1384/Pisth): An SFTP and SSH client for iOS
+- [**abstruse**](https://github.com/bleenco/abstruse): Abstruse CI is a continuous integration platform based on Node.JS and Docker.
+- [**Microsoft SQL Operations Studio**](https://github.com/Microsoft/sqlopsstudio): A data management tool that enables working with SQL Server, Azure SQL DB and SQL DW from Windows, macOS and Linux
+- [**FreeMAN**](https://github.com/matthew-matvei/freeman): A free, cross-platform file manager for power users
+- [**Fluent Terminal**](https://github.com/felixse/FluentTerminal): A terminal emulator based on UWP and web technologies.
+- [**Hyper**](https://hyper.is): A terminal built on web technologies
+- [**Diag**](https://diag.ai): A better way to troubleshoot problems faster. Capture, share and reapply troubleshooting knowledge so you can focus on solving problems that matter.
+- [**GoTTY**](https://github.com/yudai/gotty): A simple command line tool that shares your terminal as a web application based on xterm.js.
+- [**genact**](https://github.com/svenstaro/genact): A nonsense activity generator.
+- [**cPanel & WHM**](https://cpanel.com): The hosting platform of choice.
+- [**Nutanix**](https://github.com/nutanix): Nutanix Enterprise Cloud uses xterm in the webssh functionality within Nutanix Calm, and is also looking to move our old noserial (termjs) functionality to xterm.js
+- [**SSH Web Client**](https://github.com/roke22/PHP-SSH2-Web-Client): SSH Web Client with PHP.
+- [**Shellvault**](https://www.shellvault.io): The cloud-based SSH terminal you can access from anywhere.

-Do you use xterm.js in your application as well? Please [open a Pull Request](https://github.com/sourcelair/xterm.js/pulls) to include it here. We would love to have it in our list.
+[And much more...](https://github.com/xtermjs/xterm.js/network/dependents)

-## Demo
-
-### Linux or macOS
-
-First, be sure that a C++ compiler such as GCC-C++ or Clang is installed, then run these commands:
-
-```
-npm install
-npm start
-```
-
-Then open http://0.0.0.0:3000 in a web browser.
-
-### Windows
-
-First, ensure [node-gyp](https://github.com/nodejs/node-gyp) is installed and configured correctly, then run these commands.
-
-```
-npm install
-npm start
-```
-
-Then open http://127.0.0.1:3000 in a web browser.
-
-*Note: Do not use ConEmu, as it seems to break the demo for some reason.*
+Do you use xterm.js in your application as well? Please [open a Pull Request](https://github.com/sourcelair/xterm.js/pulls) to include it here. We would love to have it in our list. Note: Please add any new contributions to the end of the list only.

 ## Releases

@@ -153,16 +181,14 @@ Xterm.js follows a monthly release cycle roughly.

 The existing releases are available at this GitHub repo's [Releases](https://github.com/sourcelair/xterm.js/releases), while the roadmap is available as [Milestones](https://github.com/sourcelair/xterm.js/milestones).

-## Development and Contribution
+## Contributing

-Xterm.js is maintained by [SourceLair](https://www.sourcelair.com/) and a few external contributors, but we would love to receive contributions from everyone!
-
-To contribute either code, documentation or issues to xterm.js please read the [Contributing document](CONTRIBUTING.md) beforehand. The development of xterm.js does not require any special tool. All you need is an editor that supports JavaScript/TypeScript and a browser. You will need Node.js installed locally to get all the features working in the demo.
+You can read the [guide on the wiki](https://github.com/xtermjs/xterm.js/wiki/Contributing) to learn how to contribute and setup xterm.js for development.

 ## License Agreement

 If you contribute code to this project, you are implicitly allowing your code to be distributed under the MIT license. You are also implicitly verifying that all code is your original work.

-Copyright (c) 2014-2017, SourceLair, Private Company ([www.sourcelair.com](https://www.sourcelair.com/home)) (MIT License)
-
+Copyright (c) 2017-2018, [The xterm.js authors](https://github.com/xtermjs/xterm.js/graphs/contributors) (MIT License)<br>
+Copyright (c) 2014-2017, SourceLair, Private Company ([www.sourcelair.com](https://www.sourcelair.com/home)) (MIT License)<br>
 Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
@@ -1,70 +1,38 @@
 <!doctype html>
 <html>
-    <head>
-        <title>xterm.js demo</title>
-        <link rel="stylesheet" href="/build/xterm.css" />
-        <link rel="stylesheet" href="/build/addons/fullscreen/fullscreen.css" />
-        <link rel="stylesheet" href="style.css" />
-      	<script src="https://cdnjs.cloudflare.com/ajax/libs/es6-promise/4.1.1/es6-promise.auto.min.js"></script>
-      	<script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/1.0.0/fetch.min.js"></script>
-    </head>
-    <body>
-        <h1>xterm.js: xterm, in the browser</h1>
-        <div id="terminal-container"></div>
-        <div>
-          <h2>Actions</h2>
-          <p>
-            <label>Find next <input id="find-next"/></label>
-            <label>Find previous <input id="find-previous"/></label>
-          </p>
-        </div>
-        <div>
-          <h2>Options</h2>
-          <p>
-            <label><input type="checkbox" id="option-cursor-blink"> cursorBlink</label>
-          </p>
-          <p>
-            <label>
-              cursorStyle
-              <select id="option-cursor-style">
-                <option value="block">block</option>
-                <option value="underline">underline</option>
-                <option value="bar">bar</option>
-              </select>
-            </label>
-          </p>
-          <p>
-            <label>
-              bellStyle
-              <select id="option-bell-style">
-                <option value="">none</option>
-                <option value="sound">sound</option>
-                <option value="visual">visual</option>
-                <option value="both">both</option>
-              </select>
-            </label>
-          </p>
-          <p>
-            <label>scrollback <input type="number" id="option-scrollback" value="1000" /></label>
-          </p>
-          <p>
-            <label>tabStopWidth <input type="number" id="option-tabstopwidth" value="8" /></label>
-          </p>
-          <div>
-          	<h3>Size</h3>
-            <div>
-              <div style="display: inline-block; margin-right: 16px;">
-                <label for="cols">Columns</label>
-                <input type="number" id="cols" />
-              </div>
-              <div style="display: inline-block; margin-right: 16px;">
-                <label for="rows">Rows</label>
-                <input type="number" id="rows" />
-              </div>
-            </div>
-          </div>
-        </div>
-        <p><strong>Attention:</strong> The demo is a barebones implementation and is designed for xterm.js evaluation purposes only. Exposing the demo to the public as is would introduce security risks for the host.</p>
-        <script src="dist/bundle.js" defer ></script>
-    </body>
+  <head>
+    <title>xterm.js demo</title>
+    <link rel="stylesheet" href="/build/xterm.css" />
+    <link rel="stylesheet" href="/build/addons/fullscreen/fullscreen.css" />
+    <link rel="stylesheet" href="style.css" />
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/es6-promise/4.1.1/es6-promise.auto.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/fetch/1.0.0/fetch.min.js"></script>
+  </head>
+  <body>
+    <h1 style="color: #2D2E2C">xterm.js: A terminal for the <em style="color: #5DA5D5">web</em></h1>
+    <div id="terminal-container"></div>
+    <div>
+      <h3>Actions</h3>
+      <p>
+        <label>Find next <input id="find-next"/></label>
+        <label>Find previous <input id="find-previous"/></label>
+      </p>
+    </div>
+    <div>
+      <h3>Options</h3>
+      <p>These options can be set in the <code>Terminal</code> constructor or using the <code>Terminal.setOption</code> function.</p>
+      <div id="options-container"></div>
+    </div>
+    <div>
+      <h3>Style</h3>
+      <div style="display: inline-block; margin-right: 16px;">
+        <label for="padding">Padding</label>
+        <input type="number" id="padding" />
+      </div>
+    </div>
+    <hr/>
+    <p><strong>Attention:</strong> The demo is a barebones implementation and is designed for the development and evaluation of xterm.js only. Exposing the demo to the public as is would introduce security risks for the host.</p>
+    <button id="dispose" title="This is used to testing memory leaks">Dispose terminal</button>
+    <script src="dist/bundle.js" defer ></script>
+  </body>
 </html>
@@ -3,6 +3,7 @@ import * as attach from '../build/addons/attach/attach';
 import * as fit from '../build/addons/fit/fit';
 import * as fullscreen from '../build/addons/fullscreen/fullscreen';
 import * as search from '../build/addons/search/search';
+import * as webLinks from '../build/addons/webLinks/webLinks';
 import * as winptyCompat from '../build/addons/winptyCompat/winptyCompat';


@@ -10,6 +11,7 @@ Terminal.applyAddon(attach);
 Terminal.applyAddon(fit);
 Terminal.applyAddon(fullscreen);
 Terminal.applyAddon(search);
+Terminal.applyAddon(webLinks);
 Terminal.applyAddon(winptyCompat);


@@ -24,73 +26,38 @@ var terminalContainer = document.getElementById('terminal-container'),
      findNext: document.querySelector('#find-next'),
      findPrevious: document.querySelector('#find-previous')
    },
-    optionElements = {
-      cursorBlink: document.querySelector('#option-cursor-blink'),
-      cursorStyle: document.querySelector('#option-cursor-style'),
-      scrollback: document.querySelector('#option-scrollback'),
-      tabstopwidth: document.querySelector('#option-tabstopwidth'),
-      bellStyle: document.querySelector('#option-bell-style')
-    },
-    colsElement = document.getElementById('cols'),
-    rowsElement = document.getElementById('rows');
+    paddingElement = document.getElementById('padding');

-function setTerminalSize() {
-  var cols = parseInt(colsElement.value, 10);
-  var rows = parseInt(rowsElement.value, 10);
-  var viewportElement = document.querySelector('.xterm-viewport');
-  var scrollBarWidth = viewportElement.offsetWidth - viewportElement.clientWidth;
-  var width = (cols * term.renderer.dimensions.actualCellWidth + 20 /*room for scrollbar*/).toString() + 'px';
-  var height = (rows * term.renderer.dimensions.actualCellHeight).toString() + 'px';
-
-  terminalContainer.style.width = width;
-  terminalContainer.style.height = height;
-  term.resize(cols, rows);
+function setPadding() {
+  term.element.style.padding = parseInt(paddingElement.value, 10).toString() + 'px';
+  term.fit();
 }

-colsElement.addEventListener('change', setTerminalSize);
-rowsElement.addEventListener('change', setTerminalSize);
-
-actionElements.findNext.addEventListener('keypress', function (e) {
-  if (e.key === "Enter") {
-    e.preventDefault();
-    term.findNext(actionElements.findNext.value);
-  }
-});
-actionElements.findPrevious.addEventListener('keypress', function (e) {
-  if (e.key === "Enter") {
-    e.preventDefault();
-    term.findPrevious(actionElements.findPrevious.value);
-  }
-});
-
-optionElements.cursorBlink.addEventListener('change', function () {
-  term.setOption('cursorBlink', optionElements.cursorBlink.checked);
-});
-optionElements.cursorStyle.addEventListener('change', function () {
-  term.setOption('cursorStyle', optionElements.cursorStyle.value);
-});
-optionElements.bellStyle.addEventListener('change', function () {
-  term.setOption('bellStyle', optionElements.bellStyle.value);
-});
-optionElements.scrollback.addEventListener('change', function () {
-  term.setOption('scrollback', parseInt(optionElements.scrollback.value, 10));
-});
-optionElements.tabstopwidth.addEventListener('change', function () {
-  term.setOption('tabStopWidth', parseInt(optionElements.tabstopwidth.value, 10));
-});
-
 createTerminal();

+const disposeRecreateButtonHandler = () => {
+  // If the terminal exists dispose of it, otherwise recreate it
+  if (term) {
+    term.dispose();
+    term = null;
+    window.term = null;
+    socket = null;
+    document.getElementById('dispose').innerHTML = 'Recreate Terminal';
+  }
+  else {
+    createTerminal();
+    document.getElementById('dispose').innerHTML = 'Dispose terminal';
+  }
+};
+
+document.getElementById('dispose').addEventListener('click', disposeRecreateButtonHandler);
+
 function createTerminal() {
  // Clean terminal
  while (terminalContainer.children.length) {
    terminalContainer.removeChild(terminalContainer.children[0]);
  }
-  term = new Terminal({
-    cursorBlink: optionElements.cursorBlink.checked,
-    scrollback: parseInt(optionElements.scrollback.value, 10),
-    tabStopWidth: parseInt(optionElements.tabstopwidth.value, 10)
-  });
+  term = new Terminal({});
  window.term = term;  // Expose `term` to window for debugging purposes
  term.on('resize', function (size) {
    if (!pid) {
@@ -107,16 +74,34 @@ function createTerminal() {

  term.open(terminalContainer);
  term.winptyCompatInit();
+  term.webLinksInit();
  term.fit();
  term.focus();

+  addDomListener(paddingElement, 'change', setPadding);
+
+  addDomListener(actionElements.findNext, 'keypress', function (e) {
+    if (e.key === "Enter") {
+      e.preventDefault();
+      term.findNext(actionElements.findNext.value);
+    }
+  });
+  addDomListener(actionElements.findPrevious, 'keypress', function (e) {
+    if (e.key === "Enter") {
+      e.preventDefault();
+      term.findPrevious(actionElements.findPrevious.value);
+    }
+  });
+
  // fit is called within a setTimeout, cols and rows need this.
  setTimeout(function () {
-    colsElement.value = term.cols;
-    rowsElement.value = term.rows;
+    initOptions(term);
+    document.getElementById(`opt-cols`).value = term.cols;
+    document.getElementById(`opt-rows`).value = term.rows;
+    paddingElement.value = 0;

    // Set terminal size again to set the specific dimensions on the demo
-    setTerminalSize();
+    updateTerminalSize();

    fetch('/terminals?cols=' + term.cols + '&rows=' + term.rows, {method: 'POST'}).then(function (res) {

@@ -156,7 +141,7 @@ function runFakeTerminal() {
  term.writeln('');
  term.prompt();

-  term.on('key', function (key, ev) {
+  term._core.register(term.addDisposableListener('key', function (key, ev) {
    var printable = (
      !ev.altKey && !ev.altGraphKey && !ev.ctrlKey && !ev.metaKey
    );
@@ -171,9 +156,115 @@ function runFakeTerminal() {
    } else if (printable) {
      term.write(key);
    }
+  }));
+
+  term._core.register(term.addDisposableListener('paste', function (data, ev) {
+    term.write(data);
+  }));
+}
+
+function initOptions(term) {
+  var blacklistedOptions = [
+    // Internal only options
+    'cancelEvents',
+    'convertEol',
+    'debug',
+    'handler',
+    'screenKeys',
+    'termName',
+    'useFlowControl',
+    // Complex option
+    'theme'
+  ];
+  var stringOptions = {
+    bellSound: null,
+    bellStyle: ['none', 'sound'],
+    cursorStyle: ['block', 'underline', 'bar'],
+    experimentalCharAtlas: ['none', 'static', 'dynamic'],
+    fontFamily: null,
+    fontWeight: ['normal', 'bold', '100', '200', '300', '400', '500', '600', '700', '800', '900'],
+    fontWeightBold: ['normal', 'bold', '100', '200', '300', '400', '500', '600', '700', '800', '900'],
+    rendererType: ['dom', 'canvas']
+  };
+  var options = Object.keys(term._core.options);
+  var booleanOptions = [];
+  var numberOptions = [];
+  options.filter(o => blacklistedOptions.indexOf(o) === -1).forEach(o => {
+    switch (typeof term.getOption(o)) {
+      case 'boolean':
+        booleanOptions.push(o);
+        break;
+      case 'number':
+        numberOptions.push(o);
+        break;
+      default:
+        if (Object.keys(stringOptions).indexOf(o) === -1) {
+          console.warn(`Unrecognized option: "${o}"`);
+        }
+    }
  });

-  term.on('paste', function (data, ev) {
-    term.write(data);
+  var html = '';
+  html += '<div class="option-group">';
+  booleanOptions.forEach(o => {
+    html += `<div class="option"><label><input id="opt-${o}" type="checkbox" ${term.getOption(o) ? 'checked' : ''}/> ${o}</label></div>`;
+  });
+  html += '</div><div class="option-group">';
+  numberOptions.forEach(o => {
+    html += `<div class="option"><label>${o} <input id="opt-${o}" type="number" value="${term.getOption(o)}"/></label></div>`;
+  });
+  html += '</div><div class="option-group">';
+  Object.keys(stringOptions).forEach(o => {
+    if (stringOptions[o]) {
+      html += `<div class="option"><label>${o} <select id="opt-${o}">${stringOptions[o].map(v => `<option ${term.getOption(o) === v ? 'selected' : ''}>${v}</option>`).join('')}</select></label></div>`;
+    } else {
+      html += `<div class="option"><label>${o} <input id="opt-${o}" type="text" value="${term.getOption(o)}"/></label></div>`
+    }
+  });
+  html += '</div>';
+
+  var container = document.getElementById('options-container');
+  container.innerHTML = html;
+
+  // Attach listeners
+  booleanOptions.forEach(o => {
+    var input = document.getElementById(`opt-${o}`);
+    addDomListener(input, 'change', () => {
+      console.log('change', o, input.checked);
+      term.setOption(o, input.checked);
+    });
+  });
+  numberOptions.forEach(o => {
+    var input = document.getElementById(`opt-${o}`);
+    addDomListener(input, 'change', () => {
+      console.log('change', o, input.value);
+      if (o === 'cols' || o === 'rows') {
+        updateTerminalSize();
+      } else {
+        term.setOption(o, parseInt(input.value, 10));
+      }
+    });
+  });
+  Object.keys(stringOptions).forEach(o => {
+    var input = document.getElementById(`opt-${o}`);
+    addDomListener(input, 'change', () => {
+      console.log('change', o, input.value);
+      term.setOption(o, input.value);
+    });
  });
 }
+
+function addDomListener(element, type, handler) {
+  element.addEventListener(type, handler);
+  term._core.register({ dispose: () => element.removeEventListener(type, handler) });
+}
+
+function updateTerminalSize() {
+  var cols = parseInt(document.getElementById(`opt-cols`).value, 10);
+  var rows = parseInt(document.getElementById(`opt-rows`).value, 10);
+  var width = (cols * term._core.renderer.dimensions.actualCellWidth + term._core.viewport.scrollBarWidth).toString() + 'px';
+  var height = (rows * term._core.renderer.dimensions.actualCellHeight).toString() + 'px';
+  terminalContainer.style.width = width;
+  terminalContainer.style.height = height;
+  term.fit();
+}
@@ -14,3 +14,19 @@ h1 {
    margin: 0 auto;
    padding: 2px;
 }
+
+p {
+    font-size: 0.9em;
+    font-style: italic
+}
+
+#option-container {
+    display: flex;
+    justify-content: center;
+}
+
+.option-group {
+    display: inline-block;
+    padding-left: 20px;
+    vertical-align: top;
+}
@@ -7,16 +7,16 @@ var pty = require('node-pty');
 var terminals = {},
    logs = {};

-app.use('/build', express.static(__dirname + '/../../../../build'));
-app.use('/demo', express.static(__dirname + '/../../../../demo'));
-app.use('/zmodemjs', express.static(__dirname + '/../../../../node_modules/zmodem.js/dist'));
+app.use('/build', express.static(__dirname + '/../../build'));
+app.use('/demo', express.static(__dirname + '/../../demo'));
+app.use('/zmodemjs', express.static(__dirname + '/../../node_modules/zmodem.js/dist'));

 app.get('/', function(req, res){
  res.sendFile(__dirname + '/index.html');
 });

 app.get('/style.css', function(req, res){
-  res.sendFile(__dirname + '/style.css');
+  res.sendFile(__dirname + '../style.css');
 });

 app.get('/main.js', function(req, res){
@@ -6,6 +6,11 @@ var term,
    socket,
    pid;

+Terminal.applyAddon(fit);
+Terminal.applyAddon(attach);
+Terminal.applyAddon(zmodem);
+Terminal.applyAddon(search);
+
 var terminalContainer = document.getElementById('terminal-container'),
    actionElements = {
      findNext: document.querySelector('#find-next'),
@@ -2,8 +2,16 @@ version: "3"

 services:
  web:
+    image: xtermjs/xterm.js:latest
    build: .
    volumes:
      - ./:/usr/src/app
    ports:
      - ${XTERMJS_PORT:3000}:3000
+    command: ["npm", "start"]
+
+  watch:
+    build: .
+    volumes:
+      - ./:/usr/src/app
+    command: ["npm", "run", "watch"]
@@ -4,6 +4,7 @@
  ],
  "compilerOptions": {
    "module": "commonjs",
-    "target": "es5"
+    "target": "es5",
+    "noEmit": true
  }
 }
@@ -144,6 +144,11 @@ namespace methods_core {
      const r20: string = t.getOption('bellStyle');
      const r21: boolean = t.getOption('enableBold');
      const r22: number = t.getOption('letterSpacing');
+      const r23: boolean = t.getOption('macOptionIsMeta');
+      const r24: string = t.getOption('fontWeight');
+      const r25: string = t.getOption('fontWeightBold');
+      const r26: boolean = t.getOption('allowTransparency');
+      const r27: boolean = t.getOption('rightClickSelectsWord');
    }
    {
      const t: Terminal = new Terminal();
@@ -157,9 +162,14 @@ namespace methods_core {
      t.setOption('debug', true);
      t.setOption('disableStdin', true);
      t.setOption('enableBold', true);
+      t.setOption('fontWeight', 'normal');
+      t.setOption('fontWeight', 'bold');
+      t.setOption('fontWeightBold', 'normal');
+      t.setOption('fontWeightBold', 'bold');
      t.setOption('popOnBell', true);
      t.setOption('screenKeys', true);
      t.setOption('useFlowControl', true);
+      t.setOption('allowTransparency', true);
      t.setOption('visualBell', true);
      t.setOption('colors', ['a', 'b']);
      t.setOption('letterSpacing', 1);
@@ -177,6 +187,8 @@ namespace methods_core {
      t.setOption('lineHeight', 1);
      t.setOption('fontFamily', 'foo');
      t.setOption('theme', {background: '#ff0000'});
+      t.setOption('macOptionIsMeta', true);
+      t.setOption('rightClickSelectsWord', false);
    }
  }
  namespace scrolling {
@@ -4,11 +4,9 @@

 const browserify = require('browserify');
 const buffer = require('vinyl-buffer');
-const coveralls = require('gulp-coveralls');
 const fs = require('fs-extra');
 const gulp = require('gulp');
 const path = require('path');
-const istanbul = require('gulp-istanbul');
 const merge = require('merge-stream');
 const mocha = require('gulp-mocha');
 const sorcery = require('sorcery');
@@ -18,65 +16,39 @@ const ts = require('gulp-typescript');
 const util = require('gulp-util');
 const webpack = require('webpack-stream');

-let buildDir = process.env.BUILD_DIR || 'build';
-let tsProject = ts.createProject('tsconfig.json');
+const buildDir = process.env.BUILD_DIR || 'build';
+const tsProject = ts.createProject('tsconfig.json');
 let srcDir = tsProject.config.compilerOptions.rootDir;
 let outDir = tsProject.config.compilerOptions.outDir;

+const addons = fs.readdirSync(`${__dirname}/src/addons`);
+
+const TEST_PATHS = [
+  `${outDir}/*test.js`,
+  `${outDir}/**/*test.js`,
+  `${outDir}/*integration.js`,
+  `${outDir}/**/*integration.js`
+];
+
 // Under some environments like TravisCI, this comes out at absolute which can
 // break the build. This ensures that the outDir is absolute.
 if (path.normalize(outDir).indexOf(__dirname) !== 0) {
  outDir = `${__dirname}/${path.normalize(outDir)}`;
 }

-/**
- * Compile TypeScript sources to JavaScript files and create a source map file for each TypeScript
- * file compiled.
- */
-gulp.task('tsc', function () {
-  // Remove the ${outDir}/ directory to prevent confusion if files were deleted in ${srcDir}/
-  fs.emptyDirSync(`${outDir}`);
+gulp.task('css', function() {
+  return gulp.src(`${srcDir}/**/*.css`).pipe(gulp.dest(outDir));
+});

-  // Build all TypeScript files (including tests) to ${outDir}/, based on the configuration defined in
-  // `tsconfig.json`.
-  let tsResult = tsProject.src().pipe(sourcemaps.init()).pipe(tsProject());
-  let tsc = merge(
-    tsResult.js.pipe(sourcemaps.write('.', {includeContent: false, sourceRoot: ''})).pipe(gulp.dest(outDir)),
-    tsResult.dts.pipe(sourcemaps.write('.', {includeContent: false, sourceRoot: ''})).pipe(gulp.dest(outDir))
-  );
-
-  let addons = ['attach', 'fit', 'fullscreen', 'search', 'terminado', 'winptyCompat', 'zmodem'];
-  let addonStreams = addons.map(function(addon) {
-    fs.emptyDirSync(`${outDir}/addons/${addon}`);
-
-    let tsProjectAddon = ts.createProject(`./src/addons/${addon}/tsconfig.json`);
-    let tsResultAddon = tsProjectAddon.src().pipe(sourcemaps.init()).pipe(tsProjectAddon());
-    let tscAddon = tsResultAddon.js
-      .pipe(sourcemaps.write('.', {includeContent: false, sourceRoot: ''}))
-      .pipe(gulp.dest(`${outDir}/addons/${addon}`));
-
-    return tscAddon;
-  });
-
-  // Copy all addons from ${srcDir}/ to ${outDir}/
-  let copyAddons = gulp.src([
-    `${srcDir}/addons/**/**`
-  ]).pipe(gulp.dest(`${outDir}/addons`));
-
-  // Copy stylesheets from ${srcDir}/ to ${outDir}/
-  let copyStylesheets = gulp.src(`${srcDir}/**/*.css`).pipe(gulp.dest(outDir));
-
-  // Join all streams into a single array
-  let streams = [tsc].concat(addonStreams).concat([copyAddons, copyStylesheets]);
-
-  return merge.apply(this, streams);
+gulp.task('watch-css', function() {
+  return gulp.watch(`${srcDir}/**/*.css`, ['css']);
 });

 /**
 * Bundle JavaScript files produced by the `tsc` task, into a single file named `xterm.js` with
 * Browserify.
 */
-gulp.task('browserify', ['tsc'], function() {
+gulp.task('browserify', function() {
  // Ensure that the build directory exists
  fs.ensureDirSync(buildDir);

@@ -102,79 +74,48 @@ gulp.task('browserify', ['tsc'], function() {
  return merge(bundleStream, copyStylesheets);
 });

-gulp.task('browserify-addons', ['tsc'], function() {
-  let searchOptions = {
-    basedir: `${buildDir}/addons/search`,
-    debug: true,
-    entries: [`${outDir}/addons/search/search.js`],
-    cache: {},
-    packageCache: {}
-  };
-  let searchBundle = browserify(searchOptions)
-        .external(path.join(outDir, 'Terminal.js'))
-        .bundle()
-        .pipe(source('./addons/search/search.js'))
-        .pipe(buffer())
-        .pipe(sourcemaps.init({loadMaps: true, sourceRoot: ''}))
-        .pipe(sourcemaps.write('./'))
-        .pipe(gulp.dest(buildDir));
+gulp.task('browserify-addons', function() {
+  const bundles = addons.map((addon) => {
+    const addonOptions = {
+      basedir: `${buildDir}/addons/${addon}`,
+      debug: true,
+      entries: [`${outDir}/addons/${addon}/${addon}.js`],
+      standalone: addon,
+      cache: {},
+      packageCache: {}
+    };

-  let winptyCompatOptions = {
-    basedir: `${buildDir}/addons/winptyCompat`,
-    debug: true,
-    entries: [`${outDir}/addons/winptyCompat/winptyCompat.js`],
-    cache: {},
-    packageCache: {}
-  };
-  let winptyCompatBundle = browserify(winptyCompatOptions)
-        .external(path.join(outDir, 'Terminal.js'))
-        .bundle()
-        .pipe(source('./addons/winptyCompat/winptyCompat.js'))
-        .pipe(buffer())
-        .pipe(sourcemaps.init({loadMaps: true, sourceRoot: ''}))
-        .pipe(sourcemaps.write('./'))
-        .pipe(gulp.dest(buildDir));
+    const addonBundle = browserify(addonOptions)
+      .external(path.join(outDir, 'Terminal.js'))
+      .bundle()
+      .pipe(source(`./addons/${addon}/${addon}.js`))
+      .pipe(buffer())
+      .pipe(sourcemaps.init({loadMaps: true, sourceRoot: ''}))
+      .pipe(sourcemaps.write('./'))
+      .pipe(gulp.dest(buildDir));

-  // Copy all add-ons from outDir to buildDir
-  let copyAddons = gulp.src([
-    // Copy JS addons
-    `${outDir}/addons/**/*`
-  ]).pipe(gulp.dest(`${buildDir}/addons`));
+    return addonBundle;
+  });

-  return merge(searchBundle, winptyCompatBundle, copyAddons);
+  return merge(...bundles);
 });

-gulp.task('instrument-test', function () {
-  return gulp.src([`${outDir}/**/*.js`])
-    // Covering files
-    .pipe(istanbul())
-    // Force `require` to return covered files
-    .pipe(istanbul.hookRequire());
-});
-
-gulp.task('mocha', ['instrument-test'], function () {
-  return gulp.src([
-    `${outDir}/*test.js`,
-    `${outDir}/**/*test.js`,
-    `${outDir}/*integration.js`,
-    `${outDir}/**/*integration.js`
-  ], {read: false})
+gulp.task('mocha', function () {
+  return gulp.src(TEST_PATHS, {read: false})
      .pipe(mocha())
-      .once('error', () => process.exit(1))
-      .pipe(istanbul.writeReports());
+      .once('error', () => process.exit(1));
 });

 /**
- * Run single test file by file name(without file extension). Example of the command:
- * gulp mocha-test --test InputHandler.test
+ * Run single test suite (file) by file name (without file extension). Example of the command:
+ * gulp mocha-suite --test InputHandler.test
 */
-gulp.task('mocha-test', ['instrument-test'], function () {
+gulp.task('mocha-suite', [], function () {
  let testName = util.env.test;
  util.log("Run test by Name: " + testName);
  return gulp.src([`${outDir}/${testName}.js`, `${outDir}/**/${testName}.js`], {read: false})
         .pipe(mocha())
-         .once('error', () => process.exit(1))
-         .pipe(istanbul.writeReports());
+         .once('error', () => process.exit(1));
 });

 /**
@@ -189,9 +130,11 @@ gulp.task('sorcery', ['browserify'], function () {
 });

 gulp.task('sorcery-addons', ['browserify-addons'], function () {
-  var chain = sorcery.loadSync(`${buildDir}/addons/search/search.js`);
-  chain.apply();
-  chain.writeSync();
+  addons.forEach((addon) => {
+    const chain = sorcery.loadSync(`${buildDir}/addons/${addon}/${addon}.js`);
+    chain.apply();
+    chain.writeSync();
+  })
 });

 gulp.task('webpack', ['build'], function() {
@@ -200,12 +143,9 @@ gulp.task('webpack', ['build'], function() {
    .pipe(gulp.dest('demo/dist/'));
 });

-/**
- * Submit coverage results to coveralls.io
- */
-gulp.task('coveralls', function () {
-  gulp.src('coverage/**/lcov.info')
-    .pipe(coveralls());
+
+gulp.task('watch-demo', ['webpack'], () => {
+  gulp.watch(['./demo/*', './lib/**/*'], ['webpack']);
 });

 gulp.task('build', ['sorcery', 'sorcery-addons']);
@@ -1,26 +0,0 @@
-{
-  "source": {
-    "include": [
-      "src/"
-    ],
-    "exclude": [
-      "src/test/"
-    ],
-    "excludePattern": "src/.+\\.test\\.(js|ts)$"
-  },
-  "opts": {
-    "readme": "README.md",
-    "template": "node_modules/docdash",
-    "encoding": "utf8",
-    "destination": "docs/",
-    "recurse": true,
-    "verbose": true
-  },
-  "plugins": [
-    "plugins/markdown"
-  ],
-  "templates": {
-    "cleverLinks": false,
-    "monospaceLinks": false
-  }
-}
@@ -1,51 +1,21 @@
 {
  "name": "xterm",
  "description": "Full xterm terminal, in your browser",
-  "version": "3.0.0",
-  "ignore": [
-    "demo",
-    "test",
-    ".gitignore"
-  ],
-  "main": "lib/Terminal.js",
+  "version": "3.7.0",
+  "main": "lib/public/Terminal.js",
  "types": "typings/xterm.d.ts",
-  "repository": "https://github.com/sourcelair/xterm.js",
+  "repository": "https://github.com/xtermjs/xterm.js",
  "license": "MIT",
-  "files": [
-    "*.js",
-    "*.json",
-    "dist/*.css",
-    "dist/**/*.css",
-    "dist/*.js",
-    "dist/*.js.map",
-    "dist/**/*.js",
-    "dist/**/*.js.map",
-    "lib/*.css",
-    "lib/**/*.css",
-    "lib/*.d.ts",
-    "lib/*.js",
-    "lib/*.js.map",
-    "lib/**/*.d.ts",
-    "lib/**/*.js",
-    "lib/**/*.js.map",
-    "src/*.css",
-    "src/**/*.css",
-    "src/*.js",
-    "src/*.js.map",
-    "src/*.ts",
-    "src/**/*.js",
-    "src/**/*.js.map",
-    "src/**/*.ts"
-  ],
  "devDependencies": {
    "@types/chai": "^3.4.34",
-    "@types/jsdom": "^11.0.1",
+    "@types/glob": "^5.0.35",
+    "@types/jsdom": "11.0.1",
    "@types/mocha": "^2.2.33",
-    "@types/node": "^6.0.41",
-    "@types/text-encoding": "0.0.32",
+    "@types/node": "6.0.108",
    "browserify": "^13.3.0",
    "chai": "3.5.0",
-    "docdash": "0.4.0",
+    "concurrently": "^3.5.1",
+    "coveralls": "^3.0.1",
    "express": "4.13.4",
    "express-ws": "2.0.0-rc.1",
    "fs-extra": "^1.0.0",
@@ -53,20 +23,22 @@
    "gulp": "3.9.1",
    "gulp-cli": "^1.2.2",
    "gulp-concat": "^2.6.1",
-    "gulp-coveralls": "^0.1.4",
-    "gulp-istanbul": "^1.1.1",
    "gulp-mocha": "^3.0.1",
    "gulp-sourcemaps": "1.9.1",
    "gulp-typescript": "^3.1.3",
    "gulp-util": "3.0.8",
    "jsdoc": "3.4.3",
-    "jsdom": "^11.1.0",
+    "jsdom": "^11.11.0",
    "merge-stream": "^1.0.1",
-    "node-pty": "^0.7.2",
+    "node-pty": "0.7.6",
    "nodemon": "1.10.2",
+    "npm-run-all": "^4.1.2",
+    "nyc": "^11.8.0",
    "sorcery": "^0.10.0",
-    "tslint": "^4.0.2",
-    "typescript": "~2.4.0",
+    "source-map-loader": "^0.2.3",
+    "tslint": "^5.9.1",
+    "tslint-consistent-codestyle": "^1.13.0",
+    "typescript": "2.8.3",
    "vinyl-buffer": "^1.0.0",
    "vinyl-source-stream": "^1.1.0",
    "webpack": "^3.10.0",
@@ -74,17 +46,21 @@
    "zmodem.js": "^0.1.5"
  },
  "scripts": {
-    "prestart": "gulp webpack",
-    "start": "node demo/app",
-    "prestart-zmodem": "npm run build",
-    "start-zmodem": "node build/addons/zmodem/demo/app",
-    "lint": "tslint src/*.ts src/**/*.ts",
-    "test": "gulp test",
+    "start": "concurrently --kill-others-on-fail --names \"demo,server\" \"gulp watch-demo\" \"node demo/app\"",
+    "start-zmodem": "node demo/zmodem/app",
+    "lint": "tslint 'src/**/*.ts'",
+    "test": "npm-run-all mocha lint",
+    "test-debug": "node --inspect-brk node_modules/.bin/gulp test",
+    "test-suite": "gulp mocha-suite --test",
+    "test-coverage": "nyc -x gulpfile.js -x '**/*test*' npm run mocha",
+    "mocha": "gulp test",
    "build:docs": "jsdoc -c jsdoc.json",
+    "tsc": "tsc",
+    "prebuild": "concurrently --kill-others-on-fail --names \"lib,attach,fit,fullscreen,search,terminado,webLinks,winptyCompat,zmodem,css\" \"tsc\" \"tsc -p ./src/addons/attach\" \"tsc -p ./src/addons/fit\" \"tsc -p ./src/addons/fullscreen\" \"tsc -p ./src/addons/search\" \"tsc -p ./src/addons/terminado\" \"tsc -p ./src/addons/webLinks\" \"tsc -p ./src/addons/winptyCompat\" \"tsc -p ./src/addons/zmodem\" \"gulp css\"",
    "build": "gulp build",
    "prepublish": "npm run build",
-    "coveralls": "gulp coveralls",
-    "webpack": "gulp webpack"
-  },
-  "dependencies": {}
+    "coveralls": "nyc report --reporter=text-lcov | coveralls",
+    "webpack": "gulp webpack",
+    "watch": "concurrently --kill-others-on-fail --names \"lib,attach,fit,fullscreen,search,terminado,webLinks,winptyCompat,zmodem,css\" \"tsc -w\" \"tsc -w -p ./src/addons/attach\" \"tsc -w -p ./src/addons/fit\" \"tsc -w -p ./src/addons/fullscreen\" \"tsc -w -p ./src/addons/search\" \"tsc -w -p ./src/addons/terminado\" \"tsc -w -p ./src/addons/webLinks\" \"tsc -w -p ./src/addons/winptyCompat\" \"tsc -w -p ./src/addons/zmodem\" \"gulp watch-css\""
+  }
 }
@@ -0,0 +1,283 @@
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import * as Strings from './Strings';
+import { ITerminal, IBuffer } from './Types';
+import { isMac } from './shared/utils/Browser';
+import { RenderDebouncer } from './ui/RenderDebouncer';
+import { addDisposableDomListener } from './ui/Lifecycle';
+import { Disposable } from './common/Lifecycle';
+
+const MAX_ROWS_TO_READ = 20;
+
+const enum BoundaryPosition {
+  TOP,
+  BOTTOM
+}
+
+export class AccessibilityManager extends Disposable {
+  private _accessibilityTreeRoot: HTMLElement;
+  private _rowContainer: HTMLElement;
+  private _rowElements: HTMLElement[];
+  private _liveRegion: HTMLElement;
+  private _liveRegionLineCount: number = 0;
+
+  private _renderRowsDebouncer: RenderDebouncer;
+
+  private _topBoundaryFocusListener: (e: FocusEvent) => void;
+  private _bottomBoundaryFocusListener: (e: FocusEvent) => void;
+
+  /**
+   * This queue has a character pushed to it for keys that are pressed, if the
+   * next character added to the terminal is equal to the key char then it is
+   * not announced (added to live region) because it has already been announced
+   * by the textarea event (which cannot be canceled). There are some race
+   * condition cases if there is typing while data is streaming, but this covers
+   * the main case of typing into the prompt and inputting the answer to a
+   * question (Y/N, etc.).
+   */
+  private _charsToConsume: string[] = [];
+
+  constructor(private _terminal: ITerminal) {
+    super();
+    this._accessibilityTreeRoot = document.createElement('div');
+    this._accessibilityTreeRoot.classList.add('xterm-accessibility');
+
+    this._rowContainer = document.createElement('div');
+    this._rowContainer.classList.add('xterm-accessibility-tree');
+    this._rowElements = [];
+    for (let i = 0; i < this._terminal.rows; i++) {
+      this._rowElements[i] = this._createAccessibilityTreeNode();
+      this._rowContainer.appendChild(this._rowElements[i]);
+    }
+
+    this._topBoundaryFocusListener = e => this._onBoundaryFocus(e, BoundaryPosition.TOP);
+    this._bottomBoundaryFocusListener = e => this._onBoundaryFocus(e, BoundaryPosition.BOTTOM);
+    this._rowElements[0].addEventListener('focus', this._topBoundaryFocusListener);
+    this._rowElements[this._rowElements.length - 1].addEventListener('focus', this._bottomBoundaryFocusListener);
+
+    this._refreshRowsDimensions();
+    this._accessibilityTreeRoot.appendChild(this._rowContainer);
+
+    this._renderRowsDebouncer = new RenderDebouncer(this._terminal, this._renderRows.bind(this));
+    this._refreshRows();
+
+    this._liveRegion = document.createElement('div');
+    this._liveRegion.classList.add('live-region');
+    this._liveRegion.setAttribute('aria-live', 'assertive');
+    this._accessibilityTreeRoot.appendChild(this._liveRegion);
+
+    this._terminal.element.insertAdjacentElement('afterbegin', this._accessibilityTreeRoot);
+
+    this.register(this._renderRowsDebouncer);
+    this.register(this._terminal.addDisposableListener('resize', data => this._onResize(data.rows)));
+    this.register(this._terminal.addDisposableListener('refresh', data => this._refreshRows(data.start, data.end)));
+    this.register(this._terminal.addDisposableListener('scroll', data => this._refreshRows()));
+    // Line feed is an issue as the prompt won't be read out after a command is run
+    this.register(this._terminal.addDisposableListener('a11y.char', (char) => this._onChar(char)));
+    this.register(this._terminal.addDisposableListener('linefeed', () => this._onChar('\n')));
+    this.register(this._terminal.addDisposableListener('a11y.tab', spaceCount => this._onTab(spaceCount)));
+    this.register(this._terminal.addDisposableListener('key', keyChar => this._onKey(keyChar)));
+    this.register(this._terminal.addDisposableListener('blur', () => this._clearLiveRegion()));
+    // TODO: Maybe renderer should fire an event on terminal when the characters change and that
+    //       should be listened to instead? That would mean that the order of events are always
+    //       guarenteed
+    this.register(this._terminal.addDisposableListener('dprchange', () => this._refreshRowsDimensions()));
+    this.register(this._terminal.renderer.addDisposableListener('resize', () => this._refreshRowsDimensions()));
+    // This shouldn't be needed on modern browsers but is present in case the
+    // media query that drives the dprchange event isn't supported
+    this.register(addDisposableDomListener(window, 'resize', () => this._refreshRowsDimensions()));
+  }
+
+  public dispose(): void {
+    super.dispose();
+    this._terminal.element.removeChild(this._accessibilityTreeRoot);
+    this._rowElements.length = 0;
+  }
+
+  private _onBoundaryFocus(e: FocusEvent, position: BoundaryPosition): void {
+    const boundaryElement = <HTMLElement>e.target;
+    const beforeBoundaryElement = this._rowElements[position === BoundaryPosition.TOP ? 1 : this._rowElements.length - 2];
+
+    // Don't scroll if the buffer top has reached the end in that direction
+    const posInSet = boundaryElement.getAttribute('aria-posinset');
+    const lastRowPos = position === BoundaryPosition.TOP ? '1' : `${this._terminal.buffer.lines.length}`;
+    if (posInSet === lastRowPos) {
+      return;
+    }
+
+    // Don't scroll when the last focused item was not the second row (focus is going the other
+    // direction)
+    if (e.relatedTarget !== beforeBoundaryElement) {
+      return;
+    }
+
+    // Remove old boundary element from array
+    let topBoundaryElement: HTMLElement;
+    let bottomBoundaryElement: HTMLElement;
+    if (position === BoundaryPosition.TOP) {
+      topBoundaryElement = boundaryElement;
+      bottomBoundaryElement = this._rowElements.pop()!;
+      this._rowContainer.removeChild(bottomBoundaryElement);
+    } else {
+      topBoundaryElement = this._rowElements.shift()!;
+      bottomBoundaryElement = boundaryElement;
+      this._rowContainer.removeChild(topBoundaryElement);
+    }
+
+    // Remove listeners from old boundary elements
+    topBoundaryElement.removeEventListener('focus', this._topBoundaryFocusListener);
+    bottomBoundaryElement.removeEventListener('focus', this._bottomBoundaryFocusListener);
+
+    // Add new element to array/DOM
+    if (position === BoundaryPosition.TOP) {
+      const newElement = this._createAccessibilityTreeNode();
+      this._rowElements.unshift(newElement);
+      this._rowContainer.insertAdjacentElement('afterbegin', newElement);
+    } else {
+      const newElement = this._createAccessibilityTreeNode();
+      this._rowElements.push(newElement);
+      this._rowContainer.appendChild(newElement);
+    }
+
+    // Add listeners to new boundary elements
+    this._rowElements[0].addEventListener('focus', this._topBoundaryFocusListener);
+    this._rowElements[this._rowElements.length - 1].addEventListener('focus', this._bottomBoundaryFocusListener);
+
+    // Scroll up
+    this._terminal.scrollLines(position === BoundaryPosition.TOP ? -1 : 1);
+
+    // Focus new boundary before element
+    this._rowElements[position === BoundaryPosition.TOP ? 1 : this._rowElements.length - 2].focus();
+
+    // Prevent the standard behavior
+    e.preventDefault();
+    e.stopImmediatePropagation();
+  }
+
+  private _onResize(rows: number): void {
+    // Remove bottom boundary listener
+    this._rowElements[this._rowElements.length - 1].removeEventListener('focus', this._bottomBoundaryFocusListener);
+
+    // Grow rows as required
+    for (let i = this._rowContainer.children.length; i < this._terminal.rows; i++) {
+      this._rowElements[i] = this._createAccessibilityTreeNode();
+      this._rowContainer.appendChild(this._rowElements[i]);
+    }
+    // Shrink rows as required
+    while (this._rowElements.length > rows) {
+      this._rowContainer.removeChild(this._rowElements.pop()!);
+    }
+
+    // Add bottom boundary listener
+    this._rowElements[this._rowElements.length - 1].addEventListener('focus', this._bottomBoundaryFocusListener);
+
+    this._refreshRowsDimensions();
+  }
+
+  private _createAccessibilityTreeNode(): HTMLElement {
+    const element = document.createElement('div');
+    element.setAttribute('role', 'listitem');
+    element.tabIndex = -1;
+    this._refreshRowDimensions(element);
+    return element;
+  }
+
+  private _onTab(spaceCount: number): void {
+    for (let i = 0; i < spaceCount; i++) {
+      this._onChar(' ');
+    }
+  }
+
+  private _onChar(char: string): void {
+    if (this._liveRegionLineCount < MAX_ROWS_TO_READ + 1) {
+      if (this._charsToConsume.length > 0) {
+        // Have the screen reader ignore the char if it was just input
+        const shiftedChar = this._charsToConsume.shift();
+        if (shiftedChar !== char) {
+          this._announceCharacter(char);
+        }
+      } else {
+        this._announceCharacter(char);
+      }
+
+      if (char === '\n') {
+        this._liveRegionLineCount++;
+        if (this._liveRegionLineCount === MAX_ROWS_TO_READ + 1) {
+          this._liveRegion.textContent += Strings.tooMuchOutput;
+        }
+      }
+
+      // Only detach/attach on mac as otherwise messages can go unaccounced
+      if (isMac) {
+        if (this._liveRegion.textContent && this._liveRegion.textContent.length > 0 && !this._liveRegion.parentNode) {
+          setTimeout(() => {
+            this._accessibilityTreeRoot.appendChild(this._liveRegion);
+          }, 0);
+        }
+      }
+    }
+  }
+
+  private _clearLiveRegion(): void {
+    this._liveRegion.textContent = '';
+    this._liveRegionLineCount = 0;
+
+    // Only detach/attach on mac as otherwise messages can go unaccounced
+    if (isMac) {
+      if (this._liveRegion.parentNode) {
+        this._accessibilityTreeRoot.removeChild(this._liveRegion);
+      }
+    }
+  }
+
+  private _onKey(keyChar: string): void {
+    this._clearLiveRegion();
+    this._charsToConsume.push(keyChar);
+  }
+
+  private _refreshRows(start?: number, end?: number): void {
+    this._renderRowsDebouncer.refresh(start, end);
+  }
+
+  private _renderRows(start: number, end: number): void {
+    const buffer: IBuffer = this._terminal.buffer;
+    const setSize = buffer.lines.length.toString();
+    for (let i = start; i <= end; i++) {
+      const lineData = buffer.translateBufferLineToString(buffer.ydisp + i, true);
+      const posInSet = (buffer.ydisp + i + 1).toString();
+      const element = this._rowElements[i];
+      element.textContent = lineData.length === 0 ? Strings.blankLine : lineData;
+      element.setAttribute('aria-posinset', posInSet);
+      element.setAttribute('aria-setsize', setSize);
+    }
+  }
+
+  private _refreshRowsDimensions(): void {
+    if (!this._terminal.renderer.dimensions.actualCellHeight) {
+      return;
+    }
+    if (this._rowElements.length !== this._terminal.rows) {
+      this._onResize(this._terminal.rows);
+    }
+    for (let i = 0; i < this._terminal.rows; i++) {
+      this._refreshRowDimensions(this._rowElements[i]);
+    }
+  }
+
+  private _refreshRowDimensions(element: HTMLElement): void {
+    element.style.height = `${this._terminal.renderer.dimensions.actualCellHeight}px`;
+  }
+
+  private _announceCharacter(char: string): void {
+    if (char === ' ') {
+      // Always use nbsp for spaces in order to preserve the space between characters in
+      // voiceover's caption window
+      this._liveRegion.innerHTML += '&nbsp;';
+    } else {
+      this._liveRegion.textContent += char;
+    }
+  }
+}
@@ -4,10 +4,11 @@
 */

 import { assert } from 'chai';
-import { ITerminal } from './Interfaces';
-import { Buffer } from './Buffer';
-import { CircularList } from './utils/CircularList';
+import { ITerminal } from './Types';
+import { Buffer, DEFAULT_ATTR } from './Buffer';
+import { CircularList } from './common/CircularList';
 import { MockTerminal } from './utils/TestUtils.test';
+import { BufferLine } from './BufferLine';

 const INIT_COLS = 80;
 const INIT_ROWS = 24;
@@ -36,18 +37,75 @@ describe('Buffer', () => {

  describe('fillViewportRows', () => {
    it('should fill the buffer with blank lines based on the size of the viewport', () => {
-      const blankLineChar = terminal.blankLine()[0];
+      const blankLineChar = BufferLine.blankLine(terminal.cols, DEFAULT_ATTR).get(0);
      buffer.fillViewportRows();
      assert.equal(buffer.lines.length, INIT_ROWS);
      for (let y = 0; y < INIT_ROWS; y++) {
        assert.equal(buffer.lines.get(y).length, INIT_COLS);
        for (let x = 0; x < INIT_COLS; x++) {
-          assert.deepEqual(buffer.lines.get(y)[x], blankLineChar);
+          assert.deepEqual(buffer.lines.get(y).get(x), blankLineChar);
        }
      }
    });
  });

+  describe('getWrappedRangeForLine', () => {
+    describe('non-wrapped', () => {
+      it('should return a single row for the first row', () => {
+        buffer.fillViewportRows();
+        assert.deepEqual(buffer.getWrappedRangeForLine(0), { first: 0, last: 0 });
+      });
+      it('should return a single row for a middle row', () => {
+        buffer.fillViewportRows();
+        assert.deepEqual(buffer.getWrappedRangeForLine(12), { first: 12, last: 12 });
+      });
+      it('should return a single row for the last row', () => {
+        buffer.fillViewportRows();
+        assert.deepEqual(buffer.getWrappedRangeForLine(buffer.lines.length - 1), { first: 23, last: 23 });
+      });
+    });
+    describe('wrapped', () => {
+      it('should return a range for the first row', () => {
+        buffer.fillViewportRows();
+        buffer.lines.get(1).isWrapped = true;
+        assert.deepEqual(buffer.getWrappedRangeForLine(0), { first: 0, last: 1 });
+      });
+      it('should return a range for a middle row wrapping upwards', () => {
+        buffer.fillViewportRows();
+        buffer.lines.get(12).isWrapped = true;
+        assert.deepEqual(buffer.getWrappedRangeForLine(12), { first: 11, last: 12 });
+      });
+      it('should return a range for a middle row wrapping downwards', () => {
+        buffer.fillViewportRows();
+        buffer.lines.get(13).isWrapped = true;
+        assert.deepEqual(buffer.getWrappedRangeForLine(12), { first: 12, last: 13 });
+      });
+      it('should return a range for a middle row wrapping both ways', () => {
+        buffer.fillViewportRows();
+        buffer.lines.get(11).isWrapped = true;
+        buffer.lines.get(12).isWrapped = true;
+        buffer.lines.get(13).isWrapped = true;
+        buffer.lines.get(14).isWrapped = true;
+        assert.deepEqual(buffer.getWrappedRangeForLine(12), { first: 10, last: 14 });
+      });
+      it('should return a range for the last row', () => {
+        buffer.fillViewportRows();
+        buffer.lines.get(23).isWrapped = true;
+        assert.deepEqual(buffer.getWrappedRangeForLine(buffer.lines.length - 1), { first: 22, last: 23 });
+      });
+      it('should return a range for a row that wraps upward to first row', () => {
+        buffer.fillViewportRows();
+        buffer.lines.get(1).isWrapped = true;
+        assert.deepEqual(buffer.getWrappedRangeForLine(1), { first: 0, last: 1 });
+      });
+      it('should return a range for a row that wraps downward to last row', () => {
+        buffer.fillViewportRows();
+        buffer.lines.get(buffer.lines.length - 1).isWrapped = true;
+        assert.deepEqual(buffer.getWrappedRangeForLine(buffer.lines.length - 2), { first: 22, last: 23 });
+      });
+    });
+  });
+
  describe('resize', () => {
    describe('column size is reduced', () => {
      it('should not trim the data in the buffer', () => {
@@ -97,11 +155,11 @@ describe('Buffer', () => {
          assert.equal(buffer.lines.maxLength, INIT_ROWS);
          buffer.y = INIT_ROWS - 1;
          buffer.fillViewportRows();
-          buffer.lines.get(5)[0][1] = 'a';
-          buffer.lines.get(INIT_ROWS - 1)[0][1] = 'b';
+          buffer.lines.get(5).get(0)[1] = 'a';
+          buffer.lines.get(INIT_ROWS - 1).get(0)[1] = 'b';
          buffer.resize(INIT_COLS, INIT_ROWS - 5);
-          assert.equal(buffer.lines.get(0)[0][1], 'a');
-          assert.equal(buffer.lines.get(INIT_ROWS - 1 - 5)[0][1], 'b');
+          assert.equal(buffer.lines.get(0).get(0)[1], 'a');
+          assert.equal(buffer.lines.get(INIT_ROWS - 1 - 5).get(0)[1], 'b');
        });
      });
    });
@@ -122,7 +180,7 @@ describe('Buffer', () => {
          buffer.fillViewportRows();
          // Create 10 extra blank lines
          for (let i = 0; i < 10; i++) {
-            buffer.lines.push(terminal.blankLine());
+            buffer.lines.push(BufferLine.blankLine(terminal.cols, DEFAULT_ATTR));
          }
          // Set cursor to the bottom of the buffer
          buffer.y = INIT_ROWS - 1;
@@ -142,7 +200,7 @@ describe('Buffer', () => {
          buffer.fillViewportRows();
          // Create 10 extra blank lines
          for (let i = 0; i < 10; i++) {
-            buffer.lines.push(terminal.blankLine());
+            buffer.lines.push(BufferLine.blankLine(terminal.cols, DEFAULT_ATTR));
          }
          // Set cursor to the bottom of the buffer
          buffer.y = INIT_ROWS - 1;
@@ -188,4 +246,105 @@ describe('Buffer', () => {
      assert.equal(buffer.lines.maxLength, INIT_ROWS / 2);
    });
  });
+
+  describe('addMarker', () => {
+    it('should adjust a marker line when the buffer is trimmed', () => {
+      terminal.options.scrollback = 0;
+      buffer = new Buffer(terminal, true);
+      buffer.fillViewportRows();
+      const marker = buffer.addMarker(buffer.lines.length - 1);
+      assert.equal(marker.line, buffer.lines.length - 1);
+      buffer.lines.emit('trim', 1);
+      assert.equal(marker.line, buffer.lines.length - 2);
+    });
+    it('should dispose of a marker if it is trimmed off the buffer', () => {
+      terminal.options.scrollback = 0;
+      buffer = new Buffer(terminal, true);
+      buffer.fillViewportRows();
+      assert.equal(buffer.markers.length, 0);
+      const marker = buffer.addMarker(0);
+      assert.equal(marker.isDisposed, false);
+      assert.equal(buffer.markers.length, 1);
+      buffer.lines.emit('trim', 1);
+      assert.equal(marker.isDisposed, true);
+      assert.equal(buffer.markers.length, 0);
+    });
+  });
+
+  describe ('translateBufferLineToString', () => {
+    it('should handle selecting a section of ascii text', () => {
+      const line = new BufferLine();
+      line.push([ null, 'a', 1, 'a'.charCodeAt(0)]);
+      line.push([ null, 'b', 1, 'b'.charCodeAt(0)]);
+      line.push([ null, 'c', 1, 'c'.charCodeAt(0)]);
+      line.push([ null, 'd', 1, 'd'.charCodeAt(0)]);
+      buffer.lines.set(0, line);
+
+      const str = buffer.translateBufferLineToString(0, true, 0, 2);
+      assert.equal(str, 'ab');
+    });
+
+    it('should handle a cut-off double width character by including it', () => {
+      const line = new BufferLine();
+      line.push([ null, '語', 2, 35486 ]);
+      line.push([ null, '', 0, null]);
+      line.push([ null, 'a', 1, 'a'.charCodeAt(0)]);
+      buffer.lines.set(0, line);
+
+      const str1 = buffer.translateBufferLineToString(0, true, 0, 1);
+      assert.equal(str1, '語');
+    });
+
+    it('should handle a zero width character in the middle of the string by not including it', () => {
+      const line = new BufferLine();
+      line.push([ null, '語', 2, '語'.charCodeAt(0) ]);
+      line.push([ null, '', 0, null]);
+      line.push([ null, 'a', 1, 'a'.charCodeAt(0)]);
+      buffer.lines.set(0, line);
+
+      const str0 = buffer.translateBufferLineToString(0, true, 0, 1);
+      assert.equal(str0, '語');
+
+      const str1 = buffer.translateBufferLineToString(0, true, 0, 2);
+      assert.equal(str1, '語');
+
+      const str2 = buffer.translateBufferLineToString(0, true, 0, 3);
+      assert.equal(str2, '語a');
+    });
+
+    it('should handle single width emojis', () => {
+      const line = new BufferLine();
+      line.push([ null, '😁', 1, '😁'.charCodeAt(0) ]);
+      line.push([ null, 'a', 1, 'a'.charCodeAt(0)]);
+      buffer.lines.set(0, line);
+
+      const str1 = buffer.translateBufferLineToString(0, true, 0, 1);
+      assert.equal(str1, '😁');
+
+      const str2 = buffer.translateBufferLineToString(0, true, 0, 2);
+      assert.equal(str2, '😁a');
+    });
+
+    it('should handle double width emojis', () => {
+      const line = new BufferLine();
+      line.push([ null, '😁', 2, '😁'.charCodeAt(0) ]);
+      line.push([ null, '', 0, null]);
+      buffer.lines.set(0, line);
+
+      const str1 = buffer.translateBufferLineToString(0, true, 0, 1);
+      assert.equal(str1, '😁');
+
+      const str2 = buffer.translateBufferLineToString(0, true, 0, 2);
+      assert.equal(str2, '😁');
+
+      const line2 = new BufferLine();
+      line2.push([ null, '😁', 2, '😁'.charCodeAt(0) ]);
+      line2.push([ null, '', 0, null]);
+      line2.push([ null, 'a', 1, 'a'.charCodeAt(0)]);
+      buffer.lines.set(0, line2);
+
+      const str3 = buffer.translateBufferLineToString(0, true, 0, 3);
+      assert.equal(str3, '😁a');
+    });
+  });
 });
@@ -3,16 +3,23 @@
 * @license MIT
 */

-import { ITerminal, IBuffer } from './Interfaces';
-import { CircularList } from './utils/CircularList';
-import { LineData, CharData } from './Types';
+import { CircularList } from './common/CircularList';
+import { CharData, ITerminal, IBuffer, IBufferLine } from './Types';
+import { EventEmitter } from './EventEmitter';
+import { IMarker } from 'xterm';
+import { BufferLine } from './BufferLine';

+export const DEFAULT_ATTR = (0 << 18) | (257 << 9) | (256 << 0);
 export const CHAR_DATA_ATTR_INDEX = 0;
 export const CHAR_DATA_CHAR_INDEX = 1;
 export const CHAR_DATA_WIDTH_INDEX = 2;
 export const CHAR_DATA_CODE_INDEX = 3;
 export const MAX_BUFFER_SIZE = 4294967295; // 2^32 - 1

+export const NULL_CELL_CHAR = ' ';
+export const NULL_CELL_WIDTH = 1;
+export const NULL_CELL_CODE = 32;
+
 /**
 * This class represents a terminal buffer (an internal state of the terminal), where the
 * following information is stored (in high-level):
@@ -21,8 +28,7 @@ export const MAX_BUFFER_SIZE = 4294967295; // 2^32 - 1
 *   - scroll position
 */
 export class Buffer implements IBuffer {
-  private _lines: CircularList<LineData>;
-
+  public lines: CircularList<IBufferLine>;
  public ydisp: number;
  public ybase: number;
  public y: number;
@@ -32,6 +38,7 @@ export class Buffer implements IBuffer {
  public tabs: any;
  public savedY: number;
  public savedX: number;
+  public markers: Marker[] = [];

  /**
   * Create a new Buffer.
@@ -46,10 +53,6 @@ export class Buffer implements IBuffer {
    this.clear();
  }

-  public get lines(): CircularList<LineData> {
-    return this._lines;
-  }
-
  public get hasScrollback(): boolean {
    return this._hasScrollback && this.lines.maxLength > this._terminal.rows;
  }
@@ -79,10 +82,10 @@ export class Buffer implements IBuffer {
   * Fills the buffer's viewport with blank lines.
   */
  public fillViewportRows(): void {
-    if (this._lines.length === 0) {
+    if (this.lines.length === 0) {
      let i = this._terminal.rows;
      while (i--) {
-        this.lines.push(this._terminal.blankLine());
+        this.lines.push(BufferLine.blankLine(this._terminal.cols, DEFAULT_ATTR));
      }
    }
  }
@@ -95,7 +98,7 @@ export class Buffer implements IBuffer {
    this.ybase = 0;
    this.y = 0;
    this.x = 0;
-    this._lines = new CircularList<LineData>(this._getCorrectBufferLength(this._terminal.rows));
+    this.lines = new CircularList<IBufferLine>(this._getCorrectBufferLength(this._terminal.rows));
    this.scrollTop = 0;
    this.scrollBottom = this._terminal.rows - 1;
    this.setupTabStops();
@@ -110,24 +113,19 @@ export class Buffer implements IBuffer {
    // Increase max length if needed before adjustments to allow space to fill
    // as required.
    const newMaxLength = this._getCorrectBufferLength(newRows);
-    if (newMaxLength > this._lines.maxLength) {
-      this._lines.maxLength = newMaxLength;
+    if (newMaxLength > this.lines.maxLength) {
+      this.lines.maxLength = newMaxLength;
    }

    // The following adjustments should only happen if the buffer has been
    // initialized/filled.
-    if (this._lines.length > 0) {
+    if (this.lines.length > 0) {
      // Deal with columns increasing (we don't do anything when columns reduce)
      if (this._terminal.cols < newCols) {
-        const ch: CharData = [this._terminal.defAttr, ' ', 1, 32]; // does xterm use the default attr?
-        for (let i = 0; i < this._lines.length; i++) {
-          // TODO: This should be removed, with tests setup for the case that was
-          // causing the underlying bug, see https://github.com/sourcelair/xterm.js/issues/824
-          if (this._lines.get(i) === undefined) {
-            this._lines.set(i, this._terminal.blankLine(undefined, undefined, newCols));
-          }
-          while (this._lines.get(i).length < newCols) {
-            this._lines.get(i).push(ch);
+        const ch: CharData = [DEFAULT_ATTR, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]; // does xterm use the default attr?
+        for (let i = 0; i < this.lines.length; i++) {
+          while (this.lines.get(i).length < newCols) {
+            this.lines.get(i).push(ch);
          }
        }
      }
@@ -136,8 +134,8 @@ export class Buffer implements IBuffer {
      let addToY = 0;
      if (this._terminal.rows < newRows) {
        for (let y = this._terminal.rows; y < newRows; y++) {
-          if (this._lines.length < newRows + this.ybase) {
-            if (this.ybase > 0 && this._lines.length <= this.ybase + this.y + addToY + 1) {
+          if (this.lines.length < newRows + this.ybase) {
+            if (this.ybase > 0 && this.lines.length <= this.ybase + this.y + addToY + 1) {
              // There is room above the buffer and there are no empty elements below the line,
              // scroll up
              this.ybase--;
@@ -149,16 +147,16 @@ export class Buffer implements IBuffer {
            } else {
              // Add a blank line if there is no buffer left at the top to scroll to, or if there
              // are blank lines after the cursor
-              this._lines.push(this._terminal.blankLine(undefined, undefined, newCols));
+              this.lines.push(BufferLine.blankLine(newCols, DEFAULT_ATTR));
            }
          }
        }
      } else { // (this._terminal.rows >= newRows)
        for (let y = this._terminal.rows; y > newRows; y--) {
-          if (this._lines.length > newRows + this.ybase) {
-            if (this._lines.length > this.ybase + this.y + 1) {
+          if (this.lines.length > newRows + this.ybase) {
+            if (this.lines.length > this.ybase + this.y + 1) {
              // The line is a blank line below the cursor, remove it
-              this._lines.pop();
+              this.lines.pop();
            } else {
              // The line is the cursor, scroll down
              this.ybase++;
@@ -170,28 +168,25 @@ export class Buffer implements IBuffer {

      // Reduce max length if needed after adjustments, this is done after as it
      // would otherwise cut data from the bottom of the buffer.
-      if (newMaxLength < this._lines.maxLength) {
+      if (newMaxLength < this.lines.maxLength) {
        // Trim from the top of the buffer and adjust ybase and ydisp.
-        const amountToTrim = this._lines.length - newMaxLength;
+        const amountToTrim = this.lines.length - newMaxLength;
        if (amountToTrim > 0) {
-          this._lines.trimStart(amountToTrim);
+          this.lines.trimStart(amountToTrim);
          this.ybase = Math.max(this.ybase - amountToTrim, 0);
          this.ydisp = Math.max(this.ydisp - amountToTrim, 0);
        }
-        this._lines.maxLength = newMaxLength;
+        this.lines.maxLength = newMaxLength;
      }

      // Make sure that the cursor stays on screen
-      if (this.y >= newRows) {
-        this.y = newRows - 1;
-      }
+      this.x = Math.min(this.x, newCols - 1);
+      this.y = Math.min(this.y, newRows - 1);
      if (addToY) {
        this.y += addToY;
      }
-
-      if (this.x >= newCols) {
-        this.x = newCols - 1;
-      }
+      this.savedY = Math.min(this.savedY, newRows - 1);
+      this.savedX = Math.min(this.savedX, newCols - 1);

      this.scrollTop = 0;
    }
@@ -222,11 +217,14 @@ export class Buffer implements IBuffer {
    // needed here because some chars are 0 characters long (eg. after wide
    // chars) and some chars are longer than 1 characters long (eg. emojis).
    let startIndex = startCol;
-    endCol = endCol || line.length;
+    // Only set endCol to the line length when it is null. 0 is a valid column.
+    if (endCol === null) {
+      endCol = line.length;
+    }
    let endIndex = endCol;

    for (let i = 0; i < line.length; i++) {
-      const char = line[i];
+      const char = line.get(i);
      lineString += char[CHAR_DATA_CHAR_INDEX];
      // Adjust start and end cols for wide characters if they affect their
      // column indexes
@@ -234,7 +232,7 @@ export class Buffer implements IBuffer {
        if (startCol >= i) {
          startIndex--;
        }
-        if (endCol >= i) {
+        if (endCol > i) {
          endIndex--;
        }
      } else {
@@ -267,12 +265,26 @@ export class Buffer implements IBuffer {
    return lineString.substring(startIndex, endIndex);
  }

+  public getWrappedRangeForLine(y: number): { first: number, last: number } {
+    let first = y;
+    let last = y;
+    // Scan upwards for wrapped lines
+    while (first > 0 && this.lines.get(first).isWrapped) {
+      first--;
+    }
+    // Scan downwards for wrapped lines
+    while (last + 1 < this.lines.length && this.lines.get(last + 1).isWrapped) {
+      last++;
+    }
+    return { first, last };
+  }
+
  /**
   * Setup the tab stops.
   * @param i The index to start setting up tab stops from.
   */
  public setupTabStops(i?: number): void {
-    if (i != null) {
+    if (i !== null && i !== undefined) {
      if (!this.tabs[i]) {
        i = this.prevStop(i);
      }
@@ -291,7 +303,7 @@ export class Buffer implements IBuffer {
   * @param x The position to move the cursor to the previous tab stop.
   */
  public prevStop(x?: number): number {
-    if (x == null) {
+    if (x === null || x === undefined) {
      x = this.x;
    }
    while (!this.tabs[--x] && x > 0);
@@ -303,10 +315,54 @@ export class Buffer implements IBuffer {
   * @param x The position to move the cursor one tab stop forward.
   */
  public nextStop(x?: number): number {
-    if (x == null) {
+    if (x === null || x === undefined) {
      x = this.x;
    }
    while (!this.tabs[++x] && x < this._terminal.cols);
    return x >= this._terminal.cols ? this._terminal.cols - 1 : x < 0 ? 0 : x;
  }
+
+  public addMarker(y: number): Marker {
+    const marker = new Marker(y);
+    this.markers.push(marker);
+    marker.register(this.lines.addDisposableListener('trim', amount => {
+      marker.line -= amount;
+      // The marker should be disposed when the line is trimmed from the buffer
+      if (marker.line < 0) {
+        marker.dispose();
+      }
+    }));
+    marker.register(marker.addDisposableListener('dispose', () => this._removeMarker(marker)));
+    return marker;
+  }
+
+  private _removeMarker(marker: Marker): void {
+    // TODO: This could probably be optimized by relying on sort order and trimming the array using .length
+    this.markers.splice(this.markers.indexOf(marker), 1);
+  }
+}
+
+export class Marker extends EventEmitter implements IMarker {
+  private static _nextId = 1;
+
+  private _id: number = Marker._nextId++;
+  public isDisposed: boolean = false;
+
+  public get id(): number { return this._id; }
+
+  constructor(
+    public line: number
+  ) {
+    super();
+  }
+
+  public dispose(): void {
+    if (this.isDisposed) {
+      return;
+    }
+    this.isDisposed = true;
+    // Emit before super.dispose such that dispose listeners get a change to react
+    this.emit('dispose');
+    super.dispose();
+  }
 }
@@ -0,0 +1,97 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+import * as chai from 'chai';
+import { BufferLine } from './BufferLine';
+import { CharData, IBufferLine } from './Types';
+import { NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE, CHAR_DATA_ATTR_INDEX, CHAR_DATA_CHAR_INDEX, CHAR_DATA_WIDTH_INDEX, CHAR_DATA_CODE_INDEX } from './Buffer';
+
+
+class TestBufferLine extends BufferLine {
+  public toArray(): CharData[] {
+    return this._data;
+  }
+}
+
+describe('BufferLine', function(): void {
+  it('ctor', function(): void {
+    let line: IBufferLine = new TestBufferLine();
+    chai.expect(line.length).equals(0);
+    chai.expect(line.pop()).equals(undefined);
+    chai.expect(line.isWrapped).equals(false);
+    line = new TestBufferLine(10);
+    chai.expect(line.length).equals(10);
+    chai.expect(line.pop()).eql([0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]);
+    chai.expect(line.isWrapped).equals(false);
+    line = new TestBufferLine(10, null, true);
+    chai.expect(line.length).equals(10);
+    chai.expect(line.pop()).eql([0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]);
+    chai.expect(line.isWrapped).equals(true);
+    line = new TestBufferLine(10, [123, 'a', 456, 789], true);
+    chai.expect(line.length).equals(10);
+    chai.expect(line.pop()).eql([123, 'a', 456, 789]);
+    chai.expect(line.isWrapped).equals(true);
+  });
+  it('splice', function(): void {
+    const line = new TestBufferLine();
+    const data: CharData[] = [
+      [1, 'a', 0, 0],
+      [2, 'b', 0, 0],
+      [3, 'c', 0, 0]
+    ];
+    for (let i = 0; i < data.length; ++i) line.push(data[i]);
+    chai.expect(line.length).equals(data.length);
+    const removed1 = line.splice(1, 1, [4, 'd', 0, 0]);
+    const removed2 = data.splice(1, 1, [4, 'd', 0, 0]);
+    chai.expect(removed1).eql(removed2);
+    chai.expect(line.toArray()).eql(data);
+  });
+  it('TerminalLine.blankLine', function(): void {
+    const line = TestBufferLine.blankLine(5, 123);
+    chai.expect(line.length).equals(5);
+    chai.expect(line.isWrapped).equals(false);
+    const ch = line.get(0);
+    chai.expect(ch[CHAR_DATA_ATTR_INDEX]).equals(123);
+    chai.expect(ch[CHAR_DATA_CHAR_INDEX]).equals(NULL_CELL_CHAR);
+    chai.expect(ch[CHAR_DATA_WIDTH_INDEX]).equals(NULL_CELL_WIDTH);
+    chai.expect(ch[CHAR_DATA_CODE_INDEX]).equals(NULL_CELL_CODE);
+  });
+  it('insertCells', function(): void {
+    const line = new TestBufferLine();
+    const data: CharData[] = [
+      [1, 'a', 0, 0],
+      [2, 'b', 0, 0],
+      [3, 'c', 0, 0]
+    ];
+    for (let i = 0; i < data.length; ++i) line.push(data[i]);
+    line.insertCells(1, 3, [4, 'd', 0, 0]);
+    chai.expect(line.toArray()).eql([[1, 'a', 0, 0], [4, 'd', 0, 0], [4, 'd', 0, 0]]);
+  });
+  it('deleteCells', function(): void {
+    const line = new TestBufferLine();
+    const data: CharData[] = [
+      [1, 'a', 0, 0],
+      [2, 'b', 0, 0],
+      [3, 'c', 0, 0],
+      [4, 'd', 0, 0],
+      [5, 'e', 0, 0]
+    ];
+    for (let i = 0; i < data.length; ++i) line.push(data[i]);
+    line.deleteCells(1, 2, [6, 'f', 0, 0]);
+    chai.expect(line.toArray()).eql([[1, 'a', 0, 0], [4, 'd', 0, 0], [5, 'e', 0, 0], [6, 'f', 0, 0], [6, 'f', 0, 0]]);
+  });
+  it('replaceCells', function(): void {
+    const line = new TestBufferLine();
+    const data: CharData[] = [
+      [1, 'a', 0, 0],
+      [2, 'b', 0, 0],
+      [3, 'c', 0, 0],
+      [4, 'd', 0, 0],
+      [5, 'e', 0, 0]
+    ];
+    for (let i = 0; i < data.length; ++i) line.push(data[i]);
+    line.replaceCells(2, 4, [6, 'f', 0, 0]);
+    chai.expect(line.toArray()).eql([[1, 'a', 0, 0], [2, 'b', 0, 0], [6, 'f', 0, 0], [6, 'f', 0, 0], [5, 'e', 0, 0]]);
+  });
+});
@@ -0,0 +1,83 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+import { CharData, IBufferLine } from './Types';
+import { NULL_CELL_CODE, NULL_CELL_WIDTH, NULL_CELL_CHAR } from './Buffer';
+
+/**
+ * Class representing a terminal line.
+ */
+export class BufferLine implements IBufferLine {
+  static blankLine(cols: number, attr: number, isWrapped?: boolean): IBufferLine {
+    const ch: CharData = [attr, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE];
+    return new BufferLine(cols, ch, isWrapped);
+  }
+  protected _data: CharData[];
+  public isWrapped = false;
+  public length: number;
+
+  constructor(cols?: number, ch?: CharData, isWrapped?: boolean) {
+    this._data = [];
+    this.length = this._data.length;
+    if (cols) {
+      if (!ch) {
+        ch = [0, NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE];
+      }
+      for (let i = 0; i < cols; i++) {
+        this.push(ch);  // Note: the ctor ch is not cloned (resembles old behavior)
+      }
+    }
+    if (isWrapped) {
+      this.isWrapped = true;
+    }
+  }
+
+  public get(index: number): CharData {
+    return this._data[index];
+  }
+
+  public set(index: number, data: CharData): void {
+    this._data[index] = data;
+  }
+
+  public pop(): CharData | undefined  {
+    const data = this._data.pop();
+    this.length = this._data.length;
+    return data;
+  }
+
+  public push(data: CharData): void {
+    this._data.push(data);
+    this.length = this._data.length;
+  }
+
+  public splice(start: number, deleteCount: number, ...items: CharData[]): CharData[] {
+    const removed = this._data.splice(start, deleteCount, ...items);
+    this.length = this._data.length;
+    return removed;
+  }
+
+  /** insert n cells ch at pos, right cells are lost (stable length)  */
+  public insertCells(pos: number, n: number, ch: CharData): void {
+    while (n--) {
+      this.splice(pos, 0, ch);
+      this.pop();
+    }
+  }
+
+  /** delete n cells at pos, right side is filled with fill (stable length) */
+  public deleteCells(pos: number, n: number, fill: CharData): void {
+    while (n--) {
+      this.splice(pos, 1);
+      this.push(fill);
+    }
+  }
+
+  /** replace cells from pos to pos + n - 1 with fill */
+  public replaceCells(start: number, end: number, fill: CharData): void {
+    while (start < end  && start < this.length) {
+      this.set(start++, fill);  // Note: fill is not cloned (resembles old behavior)
+    }
+  }
+}
@@ -4,7 +4,7 @@
 */

 import { assert } from 'chai';
-import { ITerminal } from './Interfaces';
+import { ITerminal } from './Types';
 import { BufferSet } from './BufferSet';
 import { Buffer } from './Buffer';
 import { MockTerminal } from './utils/TestUtils.test';
@@ -3,7 +3,7 @@
 * @license MIT
 */

-import { ITerminal, IBufferSet } from './Interfaces';
+import { ITerminal, IBufferSet } from './Types';
 import { Buffer } from './Buffer';
 import { EventEmitter } from './EventEmitter';

@@ -18,7 +18,7 @@ export class BufferSet extends EventEmitter implements IBufferSet {

  /**
   * Create a new BufferSet for the given terminal.
-   * @param {Terminal} terminal - The terminal the BufferSet will belong to
+   * @param _terminal - The terminal the BufferSet will belong to
   */
  constructor(private _terminal: ITerminal) {
    super();
@@ -35,7 +35,6 @@ export class BufferSet extends EventEmitter implements IBufferSet {

  /**
   * Returns the alt Buffer of the BufferSet
-   * @returns {Buffer}
   */
  public get alt(): Buffer {
    return this._alt;
@@ -43,7 +42,6 @@ export class BufferSet extends EventEmitter implements IBufferSet {

  /**
   * Returns the normal Buffer of the BufferSet
-   * @returns {Buffer}
   */
  public get active(): Buffer {
    return this._activeBuffer;
@@ -51,7 +49,6 @@ export class BufferSet extends EventEmitter implements IBufferSet {

  /**
   * Returns the currently active Buffer of the BufferSet
-   * @returns {Buffer}
   */
  public get normal(): Buffer {
    return this._normal;
@@ -61,24 +58,35 @@ export class BufferSet extends EventEmitter implements IBufferSet {
   * Sets the normal Buffer of the BufferSet as its currently active Buffer
   */
  public activateNormalBuffer(): void {
+    if (this._activeBuffer === this._normal) {
+      return;
+    }
    // The alt buffer should always be cleared when we switch to the normal
    // buffer. This frees up memory since the alt buffer should always be new
    // when activated.
    this._alt.clear();
-
    this._activeBuffer = this._normal;
-    this.emit('activate', this._normal);
+    this.emit('activate', {
+      activeBuffer: this._normal,
+      inactiveBuffer: this._alt
+    });
  }

  /**
   * Sets the alt Buffer of the BufferSet as its currently active Buffer
   */
  public activateAltBuffer(): void {
+    if (this._activeBuffer === this._alt) {
+      return;
+    }
    // Since the alt buffer is always cleared when the normal buffer is
    // activated, we want to fill it when switching to it.
    this._alt.fillViewportRows();
    this._activeBuffer = this._alt;
-    this.emit('activate', this._alt);
+    this.emit('activate', {
+      activeBuffer: this._alt,
+      inactiveBuffer: this._normal
+    });
  }

  /**
@@ -49,7 +49,7 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
      [0x206A, 0x206F], [0x20D0, 0x20EF], [0x302A, 0x302F],
      [0x3099, 0x309A], [0xA806, 0xA806], [0xA80B, 0xA80B],
      [0xA825, 0xA826], [0xFB1E, 0xFB1E], [0xFE00, 0xFE0F],
-      [0xFE20, 0xFE23], [0xFEFF, 0xFEFF], [0xFFF9, 0xFFFB],
+      [0xFE20, 0xFE23], [0xFEFF, 0xFEFF], [0xFFF9, 0xFFFB]
    ];
    const COMBINING_HIGH = [
      [0x10A01, 0x10A03], [0x10A05, 0x10A06], [0x10A0C, 0x10A0F],
@@ -63,28 +63,33 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
      let min = 0;
      let max = data.length - 1;
      let mid;
-      if (ucs < data[0][0] || ucs > data[max][1])
+      if (ucs < data[0][0] || ucs > data[max][1]) {
        return false;
+      }
      while (max >= min) {
        mid = (min + max) >> 1;
-        if (ucs > data[mid][1])
+        if (ucs > data[mid][1]) {
          min = mid + 1;
-        else if (ucs < data[mid][0])
+        } else if (ucs < data[mid][0]) {
          max = mid - 1;
-        else
+        } else {
          return true;
+        }
      }
      return false;
    }
    function wcwidthBMP(ucs: number): number {
      // test for 8-bit control characters
-      if (ucs === 0)
+      if (ucs === 0) {
        return opts.nul;
-      if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0))
+      }
+      if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0)) {
        return opts.control;
+      }
      // binary search in table of non-spacing characters
-      if (bisearch(ucs, COMBINING_BMP))
+      if (bisearch(ucs, COMBINING_BMP)) {
        return 0;
+      }
      // if we arrive here, ucs is not a combining or C0/C1 control character
      if (isWideBMP(ucs)) {
        return 2;
@@ -106,8 +111,9 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
        (ucs >= 0xffe0 && ucs <= 0xffe6)));
    }
    function wcwidthHigh(ucs: number): 0 | 1 | 2 {
-      if (bisearch(ucs, COMBINING_HIGH))
+      if (bisearch(ucs, COMBINING_HIGH)) {
        return 0;
+      }
      if ((ucs >= 0x20000 && ucs <= 0x2fffd) || (ucs >= 0x30000 && ucs <= 0x3fffd)) {
        return 2;
      }
@@ -115,7 +121,7 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
    }
    const control = opts.control | 0;
    let table: number[] | Uint32Array = null;
-    function init_table(): number[] | Uint32Array {
+    function initTable(): number[] | Uint32Array {
      // lookup table for BMP
      const CODEPOINTS = 65536;  // BMP holds 65536 codepoints
      const BITWIDTH = 2;        // a codepoint can have a width of 0, 1 or 2
@@ -128,8 +134,9 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
      for (let i = 0; i < CONTAINERSIZE; ++i) {
        let num = 0;
        let pos = CODEPOINTS_PER_ITEM;
-        while (pos--)
+        while (pos--) {
          num = (num << 2) | wcwidthBMP(CODEPOINTS_PER_ITEM * i + pos);
+        }
        table[i] = num;
      }
      return table;
@@ -148,13 +155,16 @@ export const wcwidth = (function(opts: {nul: number, control: number}): (ucs: nu
    //     ==> n = n & 3      e.g.       000000000000000000000000000000XX
    return function (num: number): number {
      num = num | 0;  // get asm.js like optimization under V8
-      if (num < 32)
+      if (num < 32) {
        return control | 0;
-      if (num < 127)
+      }
+      if (num < 127) {
        return 1;
-      let t = table || init_table();
-      if (num < 65536)
+      }
+      const t = table || initTable();
+      if (num < 65536) {
        return t[num >> 4] >> ((num & 15) << 1) & 3;
+      }
      // do a full search for high codepoints
      return wcwidthHigh(num);
    };
@@ -5,19 +5,20 @@

 import { assert } from 'chai';
 import { CompositionHelper } from './CompositionHelper';
+import { ITerminal } from './Types';

 describe('CompositionHelper', () => {
-  let terminal;
-  let compositionHelper;
-  let compositionView;
-  let textarea;
-  let handledText;
+  let terminal: ITerminal;
+  let compositionHelper: CompositionHelper;
+  let compositionView: HTMLElement;
+  let textarea: HTMLTextAreaElement;
+  let handledText: string;

  beforeEach(() => {
    compositionView = {
      classList: {
        add: () => {},
-        remove: () => {},
+        remove: () => {}
      },
      getBoundingClientRect: () => {
        return { width: 0 };
@@ -27,14 +28,14 @@ describe('CompositionHelper', () => {
        top: 0
      },
      textContent: ''
-    };
+    } as any;
    textarea = {
      value: '',
      style: {
        left: 0,
        top: 0
      }
-    };
+    } as any;
    terminal = {
      element: {
        querySelector: () => {
@@ -54,7 +55,7 @@ describe('CompositionHelper', () => {
      options: {
        lineHeight: 1
      }
-    };
+    } as any;
    handledText = '';
    compositionHelper = new CompositionHelper(textarea, compositionView, terminal);
  });
@@ -63,7 +64,7 @@ describe('CompositionHelper', () => {
    it('Should insert simple characters', (done) => {
      // First character 'ㅇ'
      compositionHelper.compositionstart();
-      compositionHelper.compositionupdate({ data: 'ㅇ' });
+      compositionHelper.compositionupdate(<CompositionEvent><CompositionEvent>{ data: 'ㅇ' });
      textarea.value = 'ㅇ';
      setTimeout(() => { // wait for any textarea updates
        compositionHelper.compositionend();
@@ -71,7 +72,7 @@ describe('CompositionHelper', () => {
          assert.equal(handledText, 'ㅇ');
          // Second character 'ㅇ'
          compositionHelper.compositionstart();
-          compositionHelper.compositionupdate({ data: 'ㅇ' });
+          compositionHelper.compositionupdate(<CompositionEvent><CompositionEvent>{ data: 'ㅇ' });
          textarea.value = 'ㅇㅇ';
          setTimeout(() => { // wait for any textarea updates
            compositionHelper.compositionend();
@@ -87,13 +88,13 @@ describe('CompositionHelper', () => {
    it('Should insert complex characters', (done) => {
      // First character '앙'
      compositionHelper.compositionstart();
-      compositionHelper.compositionupdate({ data: 'ㅇ' });
+      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
      textarea.value = 'ㅇ';
      setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate({ data: '아' });
+        compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
        textarea.value = '아';
        setTimeout(() => { // wait for any textarea updates
-          compositionHelper.compositionupdate({ data: '앙' });
+          compositionHelper.compositionupdate(<CompositionEvent>{ data: '앙' });
          textarea.value = '앙';
          setTimeout(() => { // wait for any textarea updates
            compositionHelper.compositionend();
@@ -101,13 +102,13 @@ describe('CompositionHelper', () => {
              assert.equal(handledText, '앙');
              // Second character '앙'
              compositionHelper.compositionstart();
-              compositionHelper.compositionupdate({ data: 'ㅇ' });
+              compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
              textarea.value = '앙ㅇ';
              setTimeout(() => { // wait for any textarea updates
-                compositionHelper.compositionupdate({ data: '아' });
+                compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
                textarea.value = '앙아';
                setTimeout(() => { // wait for any textarea updates
-                  compositionHelper.compositionupdate({ data: '앙' });
+                  compositionHelper.compositionupdate(<CompositionEvent>{ data: '앙' });
                  textarea.value = '앙앙';
                  setTimeout(() => { // wait for any textarea updates
                    compositionHelper.compositionend();
@@ -127,19 +128,19 @@ describe('CompositionHelper', () => {
    it('Should insert complex characters that change with following character', (done) => {
      // First character '아'
      compositionHelper.compositionstart();
-      compositionHelper.compositionupdate({ data: 'ㅇ' });
+      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
      textarea.value = 'ㅇ';
      setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate({ data: '아' });
+        compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
        textarea.value = '아';
        setTimeout(() => { // wait for any textarea updates
          // Start second character '아' in first character
-          compositionHelper.compositionupdate({ data: '앙' });
+          compositionHelper.compositionupdate(<CompositionEvent>{ data: '앙' });
          textarea.value = '앙';
          setTimeout(() => { // wait for any textarea updates
            compositionHelper.compositionend();
            compositionHelper.compositionstart();
-            compositionHelper.compositionupdate({ data: '아' });
+            compositionHelper.compositionupdate(<CompositionEvent>{ data: '아' });
            textarea.value = '아아';
            setTimeout(() => { // wait for any textarea updates
              compositionHelper.compositionend();
@@ -156,14 +157,14 @@ describe('CompositionHelper', () => {
    it('Should insert multi-characters compositions', (done) => {
      // First character 'だ'
      compositionHelper.compositionstart();
-      compositionHelper.compositionupdate({ data: 'd' });
+      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'd' });
      textarea.value = 'd';
      setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate({ data: 'だ' });
+        compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だ' });
        textarea.value = 'だ';
        setTimeout(() => { // wait for any textarea updates
          // Second character 'あ'
-          compositionHelper.compositionupdate({ data: 'だあ' });
+          compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だあ' });
          textarea.value = 'だあ';
          setTimeout(() => { // wait for any textarea updates
            compositionHelper.compositionend();
@@ -179,18 +180,18 @@ describe('CompositionHelper', () => {
    it('Should insert multi-character compositions that are converted to other characters with the same length', (done) => {
      // First character 'だ'
      compositionHelper.compositionstart();
-      compositionHelper.compositionupdate({ data: 'd' });
+      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'd' });
      textarea.value = 'd';
      setTimeout(() => { // wait for any textarea updates
-        compositionHelper.compositionupdate({ data: 'だ' });
+        compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だ' });
        textarea.value = 'だ';
        setTimeout(() => { // wait for any textarea updates
          // Second character 'ー'
-          compositionHelper.compositionupdate({ data: 'だー' });
+          compositionHelper.compositionupdate(<CompositionEvent>{ data: 'だー' });
          textarea.value = 'だー';
          setTimeout(() => { // wait for any textarea updates
            // Convert to katakana 'ダー'
-            compositionHelper.compositionupdate({ data: 'ダー' });
+            compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ダー' });
            textarea.value = 'ダー';
            setTimeout(() => { // wait for any textarea updates
              compositionHelper.compositionend();
@@ -207,18 +208,18 @@ describe('CompositionHelper', () => {
    it('Should insert multi-character compositions that are converted to other characters with different lengths', (done) => {
      // First character 'い'
      compositionHelper.compositionstart();
-      compositionHelper.compositionupdate({ data: 'い' });
+      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'い' });
      textarea.value = 'い';
      setTimeout(() => { // wait for any textarea updates
        // Second character 'ま'
-        compositionHelper.compositionupdate({ data: 'いm' });
+        compositionHelper.compositionupdate(<CompositionEvent>{ data: 'いm' });
        textarea.value = 'いm';
        setTimeout(() => { // wait for any textarea updates
-          compositionHelper.compositionupdate({ data: 'いま' });
+          compositionHelper.compositionupdate(<CompositionEvent>{ data: 'いま' });
          textarea.value = 'いま';
          setTimeout(() => { // wait for any textarea updates
            // Convert to kanji '今'
-            compositionHelper.compositionupdate({ data: '今' });
+            compositionHelper.compositionupdate(<CompositionEvent>{ data: '今' });
            textarea.value = '今';
            setTimeout(() => { // wait for any textarea updates
              compositionHelper.compositionend();
@@ -235,7 +236,7 @@ describe('CompositionHelper', () => {
    it('Should insert non-composition characters input immediately after composition characters', (done) => {
      // First character 'ㅇ'
      compositionHelper.compositionstart();
-      compositionHelper.compositionupdate({ data: 'ㅇ' });
+      compositionHelper.compositionupdate(<CompositionEvent>{ data: 'ㅇ' });
      textarea.value = 'ㅇ';
      setTimeout(() => { // wait for any textarea updates
        compositionHelper.compositionend();
@@ -3,7 +3,7 @@
 * @license MIT
 */

-import { ITerminal } from './Interfaces';
+import { ITerminal } from './Types';

 interface IPosition {
  start: number;
@@ -20,54 +20,54 @@ export class CompositionHelper {
   * Whether input composition is currently happening, eg. via a mobile keyboard, speech input or
   * IME. This variable determines whether the compositionText should be displayed on the UI.
   */
-  private isComposing: boolean;
+  private _isComposing: boolean;

  /**
   * The position within the input textarea's value of the current composition.
   */
-  private compositionPosition: IPosition;
+  private _compositionPosition: IPosition;

  /**
   * Whether a composition is in the process of being sent, setting this to false will cancel any
   * in-progress composition.
   */
-  private isSendingComposition: boolean;
+  private _isSendingComposition: boolean;

  /**
   * Creates a new CompositionHelper.
-   * @param textarea The textarea that xterm uses for input.
-   * @param compositionView The element to display the in-progress composition in.
-   * @param terminal The Terminal to forward the finished composition to.
+   * @param _textarea The textarea that xterm uses for input.
+   * @param _compositionView The element to display the in-progress composition in.
+   * @param _terminal The Terminal to forward the finished composition to.
   */
  constructor(
-    private textarea: HTMLTextAreaElement,
-    private compositionView: HTMLElement,
-    private terminal: ITerminal
+    private _textarea: HTMLTextAreaElement,
+    private _compositionView: HTMLElement,
+    private _terminal: ITerminal
  ) {
-    this.isComposing = false;
-    this.isSendingComposition = false;
-    this.compositionPosition = { start: null, end: null };
+    this._isComposing = false;
+    this._isSendingComposition = false;
+    this._compositionPosition = { start: null, end: null };
  }

  /**
   * Handles the compositionstart event, activating the composition view.
   */
  public compositionstart(): void {
-    this.isComposing = true;
-    this.compositionPosition.start = this.textarea.value.length;
-    this.compositionView.textContent = '';
-    this.compositionView.classList.add('active');
+    this._isComposing = true;
+    this._compositionPosition.start = this._textarea.value.length;
+    this._compositionView.textContent = '';
+    this._compositionView.classList.add('active');
  }

  /**
   * Handles the compositionupdate event, updating the composition view.
-   * @param {CompositionEvent} ev The event.
+   * @param ev The event.
   */
  public compositionupdate(ev: CompositionEvent): void {
-    this.compositionView.textContent = ev.data;
+    this._compositionView.textContent = ev.data;
    this.updateCompositionElements();
    setTimeout(() => {
-      this.compositionPosition.end = this.textarea.value.length;
+      this._compositionPosition.end = this._textarea.value.length;
    }, 0);
  }

@@ -76,7 +76,7 @@ export class CompositionHelper {
   * the handler.
   */
  public compositionend(): void {
-    this.finalizeComposition(true);
+    this._finalizeComposition(true);
  }

  /**
@@ -85,24 +85,23 @@ export class CompositionHelper {
   * @return Whether the Terminal should continue processing the keydown event.
   */
  public keydown(ev: KeyboardEvent): boolean {
-    if (this.isComposing || this.isSendingComposition) {
+    if (this._isComposing || this._isSendingComposition) {
      if (ev.keyCode === 229) {
        // Continue composing if the keyCode is the "composition character"
        return false;
      } else if (ev.keyCode === 16 || ev.keyCode === 17 || ev.keyCode === 18) {
        // Continue composing if the keyCode is a modifier key
        return false;
-      } else {
-        // Finish composition immediately. This is mainly here for the case where enter is
-        // pressed and the handler needs to be triggered before the command is executed.
-        this.finalizeComposition(false);
      }
+      // Finish composition immediately. This is mainly here for the case where enter is
+      // pressed and the handler needs to be triggered before the command is executed.
+      this._finalizeComposition(false);
    }

    if (ev.keyCode === 229) {
      // If the "composition character" is used but gets to this point it means a non-composition
      // character (eg. numbers and punctuation) was pressed when the IME was active.
-      this.handleAnyTextareaChanges();
+      this._handleAnyTextareaChanges();
      return false;
    }

@@ -117,22 +116,22 @@ export class CompositionHelper {
   *   compositionend event is triggered, such as enter, so that the composition is send before
   *   the command is executed.
   */
-  private finalizeComposition(waitForPropogation: boolean): void {
-    this.compositionView.classList.remove('active');
-    this.isComposing = false;
-    this.clearTextareaPosition();
+  private _finalizeComposition(waitForPropogation: boolean): void {
+    this._compositionView.classList.remove('active');
+    this._isComposing = false;
+    this._clearTextareaPosition();

    if (!waitForPropogation) {
      // Cancel any delayed composition send requests and send the input immediately.
-      this.isSendingComposition = false;
-      const input = this.textarea.value.substring(this.compositionPosition.start, this.compositionPosition.end);
-      this.terminal.handler(input);
+      this._isSendingComposition = false;
+      const input = this._textarea.value.substring(this._compositionPosition.start, this._compositionPosition.end);
+      this._terminal.handler(input);
    } else {
      // Make a deep copy of the composition position here as a new compositionstart event may
      // fire before the setTimeout executes.
      const currentCompositionPosition = {
-        start: this.compositionPosition.start,
-        end: this.compositionPosition.end,
+        start: this._compositionPosition.start,
+        end: this._compositionPosition.end
      };

      // Since composition* events happen before the changes take place in the textarea on most
@@ -143,22 +142,22 @@ export class CompositionHelper {
      // - The last compositionupdate event's data property does not always accurately describe
      //   the character, a counter example being Korean where an ending consonsant can move to
      //   the following character if the following input is a vowel.
-      this.isSendingComposition = true;
+      this._isSendingComposition = true;
      setTimeout(() => {
        // Ensure that the input has not already been sent
-        if (this.isSendingComposition) {
-          this.isSendingComposition = false;
+        if (this._isSendingComposition) {
+          this._isSendingComposition = false;
          let input;
-          if (this.isComposing) {
+          if (this._isComposing) {
            // Use the end position to get the string if a new composition has started.
-            input = this.textarea.value.substring(currentCompositionPosition.start, currentCompositionPosition.end);
+            input = this._textarea.value.substring(currentCompositionPosition.start, currentCompositionPosition.end);
          } else {
            // Don't use the end position here in order to pick up any characters after the
            // composition has finished, for example when typing a non-composition character
            // (eg. 2) after a composition character.
-            input = this.textarea.value.substring(currentCompositionPosition.start);
+            input = this._textarea.value.substring(currentCompositionPosition.start);
          }
-          this.terminal.handler(input);
+          this._terminal.handler(input);
        }
      }, 0);
    }
@@ -170,15 +169,15 @@ export class CompositionHelper {
   * character" (229) is triggered, in order to allow non-composition text to be entered when an
   * IME is active.
   */
-  private handleAnyTextareaChanges(): void {
-    const oldValue = this.textarea.value;
+  private _handleAnyTextareaChanges(): void {
+    const oldValue = this._textarea.value;
    setTimeout(() => {
      // Ignore if a composition has started since the timeout
-      if (!this.isComposing) {
-        const newValue = this.textarea.value;
+      if (!this._isComposing) {
+        const newValue = this._textarea.value;
        const diff = newValue.replace(oldValue, '');
        if (diff.length > 0) {
-          this.terminal.handler(diff);
+          this._terminal.handler(diff);
        }
      }
    }, 0);
@@ -191,40 +190,40 @@ export class CompositionHelper {
   *   necessary as the IME events across browsers are not consistently triggered.
   */
  public updateCompositionElements(dontRecurse?: boolean): void {
-    if (!this.isComposing) {
+    if (!this._isComposing) {
      return;
    }

-    if (this.terminal.buffer.isCursorInViewport) {
-      const cellHeight = Math.ceil(this.terminal.charMeasure.height * this.terminal.options.lineHeight);
-      const cursorTop = this.terminal.buffer.y * cellHeight;
-      const cursorLeft = this.terminal.buffer.x * this.terminal.charMeasure.width;
+    if (this._terminal.buffer.isCursorInViewport) {
+      const cellHeight = Math.ceil(this._terminal.charMeasure.height * this._terminal.options.lineHeight);
+      const cursorTop = this._terminal.buffer.y * cellHeight;
+      const cursorLeft = this._terminal.buffer.x * this._terminal.charMeasure.width;

-      this.compositionView.style.left = cursorLeft + 'px';
-      this.compositionView.style.top = cursorTop + 'px';
-      this.compositionView.style.height = cellHeight + 'px';
-      this.compositionView.style.lineHeight = cellHeight + 'px';
+      this._compositionView.style.left = cursorLeft + 'px';
+      this._compositionView.style.top = cursorTop + 'px';
+      this._compositionView.style.height = cellHeight + 'px';
+      this._compositionView.style.lineHeight = cellHeight + 'px';
      // Sync the textarea to the exact position of the composition view so the IME knows where the
      // text is.
-      const compositionViewBounds = this.compositionView.getBoundingClientRect();
-      this.textarea.style.left = cursorLeft + 'px';
-      this.textarea.style.top = cursorTop + 'px';
-      this.textarea.style.width = compositionViewBounds.width + 'px';
-      this.textarea.style.height = compositionViewBounds.height + 'px';
-      this.textarea.style.lineHeight = compositionViewBounds.height + 'px';
+      const compositionViewBounds = this._compositionView.getBoundingClientRect();
+      this._textarea.style.left = cursorLeft + 'px';
+      this._textarea.style.top = cursorTop + 'px';
+      this._textarea.style.width = compositionViewBounds.width + 'px';
+      this._textarea.style.height = compositionViewBounds.height + 'px';
+      this._textarea.style.lineHeight = compositionViewBounds.height + 'px';
    }

    if (!dontRecurse) {
      setTimeout(() => this.updateCompositionElements(true), 0);
    }
-  };
+  }

  /**
   * Clears the textarea's position so that the cursor does not blink on IE.
   * @private
   */
-  private clearTextareaPosition(): void {
-    this.textarea.style.left = '';
-    this.textarea.style.top = '';
-  };
+  private _clearTextareaPosition(): void {
+    this._textarea.style.left = '';
+    this._textarea.style.top = '';
+  }
 }
@@ -0,0 +1,565 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { ParserState, ParserAction, IParsingState, IDcsHandler, IEscapeSequenceParser } from './Types';
+import { Disposable } from './common/Lifecycle';
+
+/**
+ * Returns an array filled with numbers between the low and high parameters (right exclusive).
+ * @param low The low number.
+ * @param high The high number.
+ */
+function r(low: number, high: number): number[] {
+  let c = high - low;
+  const arr = new Array(c);
+  while (c--) {
+    arr[c] = --high;
+  }
+  return arr;
+}
+
+/**
+ * Transition table for EscapeSequenceParser.
+ * NOTE: data in the underlying table is packed like this:
+ *   currentState << 8 | characterCode  -->  action << 4 | nextState
+ */
+export class TransitionTable {
+  public table: Uint8Array | number[];
+
+  constructor(length: number) {
+    this.table = (typeof Uint8Array === 'undefined')
+      ? new Array(length)
+      : new Uint8Array(length);
+  }
+
+  /**
+   * Add a transition to the transition table.
+   * @param code input character code
+   * @param state current parser state
+   * @param action parser action to be done
+   * @param next next parser state
+   */
+  add(code: number, state: number, action: number | null, next: number | null): void {
+    this.table[state << 8 | code] = ((action | 0) << 4) | ((next === undefined) ? state : next);
+  }
+
+  /**
+   * Add transitions for multiple input character codes.
+   * @param codes input character code array
+   * @param state current parser state
+   * @param action parser action to be done
+   * @param next next parser state
+   */
+  addMany(codes: number[], state: number, action: number | null, next: number | null): void {
+    for (let i = 0; i < codes.length; i++) {
+      this.add(codes[i], state, action, next);
+    }
+  }
+}
+
+
+/**
+ * Default definitions for the VT500_TRANSITION_TABLE.
+ */
+const PRINTABLES = r(0x20, 0x7f);
+const EXECUTABLES = r(0x00, 0x18);
+EXECUTABLES.push(0x19);
+EXECUTABLES.concat(r(0x1c, 0x20));
+const DEFAULT_TRANSITION = ParserAction.ERROR << 4 | ParserState.GROUND;
+
+/**
+ * VT500 compatible transition table.
+ * Taken from https://vt100.net/emu/dec_ansi_parser.
+ */
+export const VT500_TRANSITION_TABLE = (function (): TransitionTable {
+  const table: TransitionTable = new TransitionTable(4095);
+
+  const states: number[] = r(ParserState.GROUND, ParserState.DCS_PASSTHROUGH + 1);
+  let state: any;
+
+  // table with default transition [any] --> DEFAULT_TRANSITION
+  for (state in states) {
+    // NOTE: table lookup is capped at 0xa0 in parse to keep the table small
+    for (let code = 0; code < 160; ++code) {
+      table.add(code, state, ParserAction.ERROR, ParserState.GROUND);
+    }
+  }
+  // printables
+  table.addMany(PRINTABLES, ParserState.GROUND, ParserAction.PRINT, ParserState.GROUND);
+  // global anywhere rules
+  for (state in states) {
+    table.addMany([0x18, 0x1a, 0x99, 0x9a], state, ParserAction.EXECUTE, ParserState.GROUND);
+    table.addMany(r(0x80, 0x90), state, ParserAction.EXECUTE, ParserState.GROUND);
+    table.addMany(r(0x90, 0x98), state, ParserAction.EXECUTE, ParserState.GROUND);
+    table.add(0x9c, state, ParserAction.IGNORE, ParserState.GROUND); // ST as terminator
+    table.add(0x1b, state, ParserAction.CLEAR, ParserState.ESCAPE);  // ESC
+    table.add(0x9d, state, ParserAction.OSC_START, ParserState.OSC_STRING);  // OSC
+    table.addMany([0x98, 0x9e, 0x9f], state, ParserAction.IGNORE, ParserState.SOS_PM_APC_STRING);
+    table.add(0x9b, state, ParserAction.CLEAR, ParserState.CSI_ENTRY);  // CSI
+    table.add(0x90, state, ParserAction.CLEAR, ParserState.DCS_ENTRY);  // DCS
+  }
+  // rules for executables and 7f
+  table.addMany(EXECUTABLES, ParserState.GROUND, ParserAction.EXECUTE, ParserState.GROUND);
+  table.addMany(EXECUTABLES, ParserState.ESCAPE, ParserAction.EXECUTE, ParserState.ESCAPE);
+  table.add(0x7f, ParserState.ESCAPE, ParserAction.IGNORE, ParserState.ESCAPE);
+  table.addMany(EXECUTABLES, ParserState.OSC_STRING, ParserAction.IGNORE, ParserState.OSC_STRING);
+  table.addMany(EXECUTABLES, ParserState.CSI_ENTRY, ParserAction.EXECUTE, ParserState.CSI_ENTRY);
+  table.add(0x7f, ParserState.CSI_ENTRY, ParserAction.IGNORE, ParserState.CSI_ENTRY);
+  table.addMany(EXECUTABLES, ParserState.CSI_PARAM, ParserAction.EXECUTE, ParserState.CSI_PARAM);
+  table.add(0x7f, ParserState.CSI_PARAM, ParserAction.IGNORE, ParserState.CSI_PARAM);
+  table.addMany(EXECUTABLES, ParserState.CSI_IGNORE, ParserAction.EXECUTE, ParserState.CSI_IGNORE);
+  table.addMany(EXECUTABLES, ParserState.CSI_INTERMEDIATE, ParserAction.EXECUTE, ParserState.CSI_INTERMEDIATE);
+  table.add(0x7f, ParserState.CSI_INTERMEDIATE, ParserAction.IGNORE, ParserState.CSI_INTERMEDIATE);
+  table.addMany(EXECUTABLES, ParserState.ESCAPE_INTERMEDIATE, ParserAction.EXECUTE, ParserState.ESCAPE_INTERMEDIATE);
+  table.add(0x7f, ParserState.ESCAPE_INTERMEDIATE, ParserAction.IGNORE, ParserState.ESCAPE_INTERMEDIATE);
+  // osc
+  table.add(0x5d, ParserState.ESCAPE, ParserAction.OSC_START, ParserState.OSC_STRING);
+  table.addMany(PRINTABLES, ParserState.OSC_STRING, ParserAction.OSC_PUT, ParserState.OSC_STRING);
+  table.add(0x7f, ParserState.OSC_STRING, ParserAction.OSC_PUT, ParserState.OSC_STRING);
+  table.addMany([0x9c, 0x1b, 0x18, 0x1a, 0x07], ParserState.OSC_STRING, ParserAction.OSC_END, ParserState.GROUND);
+  table.addMany(r(0x1c, 0x20), ParserState.OSC_STRING, ParserAction.IGNORE, ParserState.OSC_STRING);
+  // sos/pm/apc does nothing
+  table.addMany([0x58, 0x5e, 0x5f], ParserState.ESCAPE, ParserAction.IGNORE, ParserState.SOS_PM_APC_STRING);
+  table.addMany(PRINTABLES, ParserState.SOS_PM_APC_STRING, ParserAction.IGNORE, ParserState.SOS_PM_APC_STRING);
+  table.addMany(EXECUTABLES, ParserState.SOS_PM_APC_STRING, ParserAction.IGNORE, ParserState.SOS_PM_APC_STRING);
+  table.add(0x9c, ParserState.SOS_PM_APC_STRING, ParserAction.IGNORE, ParserState.GROUND);
+  // csi entries
+  table.add(0x5b, ParserState.ESCAPE, ParserAction.CLEAR, ParserState.CSI_ENTRY);
+  table.addMany(r(0x40, 0x7f), ParserState.CSI_ENTRY, ParserAction.CSI_DISPATCH, ParserState.GROUND);
+  table.addMany(r(0x30, 0x3a), ParserState.CSI_ENTRY, ParserAction.PARAM, ParserState.CSI_PARAM);
+  table.add(0x3b, ParserState.CSI_ENTRY, ParserAction.PARAM, ParserState.CSI_PARAM);
+  table.addMany([0x3c, 0x3d, 0x3e, 0x3f], ParserState.CSI_ENTRY, ParserAction.COLLECT, ParserState.CSI_PARAM);
+  table.addMany(r(0x30, 0x3a), ParserState.CSI_PARAM, ParserAction.PARAM, ParserState.CSI_PARAM);
+  table.add(0x3b, ParserState.CSI_PARAM, ParserAction.PARAM, ParserState.CSI_PARAM);
+  table.addMany(r(0x40, 0x7f), ParserState.CSI_PARAM, ParserAction.CSI_DISPATCH, ParserState.GROUND);
+  table.addMany([0x3a, 0x3c, 0x3d, 0x3e, 0x3f], ParserState.CSI_PARAM, ParserAction.IGNORE, ParserState.CSI_IGNORE);
+  table.addMany(r(0x20, 0x40), ParserState.CSI_IGNORE, ParserAction.IGNORE, ParserState.CSI_IGNORE);
+  table.add(0x7f, ParserState.CSI_IGNORE, ParserAction.IGNORE, ParserState.CSI_IGNORE);
+  table.addMany(r(0x40, 0x7f), ParserState.CSI_IGNORE, ParserAction.IGNORE, ParserState.GROUND);
+  table.add(0x3a, ParserState.CSI_ENTRY, ParserAction.IGNORE, ParserState.CSI_IGNORE);
+  table.addMany(r(0x20, 0x30), ParserState.CSI_ENTRY, ParserAction.COLLECT, ParserState.CSI_INTERMEDIATE);
+  table.addMany(r(0x20, 0x30), ParserState.CSI_INTERMEDIATE, ParserAction.COLLECT, ParserState.CSI_INTERMEDIATE);
+  table.addMany(r(0x30, 0x40), ParserState.CSI_INTERMEDIATE, ParserAction.IGNORE, ParserState.CSI_IGNORE);
+  table.addMany(r(0x40, 0x7f), ParserState.CSI_INTERMEDIATE, ParserAction.CSI_DISPATCH, ParserState.GROUND);
+  table.addMany(r(0x20, 0x30), ParserState.CSI_PARAM, ParserAction.COLLECT, ParserState.CSI_INTERMEDIATE);
+  // esc_intermediate
+  table.addMany(r(0x20, 0x30), ParserState.ESCAPE, ParserAction.COLLECT, ParserState.ESCAPE_INTERMEDIATE);
+  table.addMany(r(0x20, 0x30), ParserState.ESCAPE_INTERMEDIATE, ParserAction.COLLECT, ParserState.ESCAPE_INTERMEDIATE);
+  table.addMany(r(0x30, 0x7f), ParserState.ESCAPE_INTERMEDIATE, ParserAction.ESC_DISPATCH, ParserState.GROUND);
+  table.addMany(r(0x30, 0x50), ParserState.ESCAPE, ParserAction.ESC_DISPATCH, ParserState.GROUND);
+  table.addMany(r(0x51, 0x58), ParserState.ESCAPE, ParserAction.ESC_DISPATCH, ParserState.GROUND);
+  table.addMany([0x59, 0x5a, 0x5c], ParserState.ESCAPE, ParserAction.ESC_DISPATCH, ParserState.GROUND);
+  table.addMany(r(0x60, 0x7f), ParserState.ESCAPE, ParserAction.ESC_DISPATCH, ParserState.GROUND);
+  // dcs entry
+  table.add(0x50, ParserState.ESCAPE, ParserAction.CLEAR, ParserState.DCS_ENTRY);
+  table.addMany(EXECUTABLES, ParserState.DCS_ENTRY, ParserAction.IGNORE, ParserState.DCS_ENTRY);
+  table.add(0x7f, ParserState.DCS_ENTRY, ParserAction.IGNORE, ParserState.DCS_ENTRY);
+  table.addMany(r(0x1c, 0x20), ParserState.DCS_ENTRY, ParserAction.IGNORE, ParserState.DCS_ENTRY);
+  table.addMany(r(0x20, 0x30), ParserState.DCS_ENTRY, ParserAction.COLLECT, ParserState.DCS_INTERMEDIATE);
+  table.add(0x3a, ParserState.DCS_ENTRY, ParserAction.IGNORE, ParserState.DCS_IGNORE);
+  table.addMany(r(0x30, 0x3a), ParserState.DCS_ENTRY, ParserAction.PARAM, ParserState.DCS_PARAM);
+  table.add(0x3b, ParserState.DCS_ENTRY, ParserAction.PARAM, ParserState.DCS_PARAM);
+  table.addMany([0x3c, 0x3d, 0x3e, 0x3f], ParserState.DCS_ENTRY, ParserAction.COLLECT, ParserState.DCS_PARAM);
+  table.addMany(EXECUTABLES, ParserState.DCS_IGNORE, ParserAction.IGNORE, ParserState.DCS_IGNORE);
+  table.addMany(r(0x20, 0x80), ParserState.DCS_IGNORE, ParserAction.IGNORE, ParserState.DCS_IGNORE);
+  table.addMany(r(0x1c, 0x20), ParserState.DCS_IGNORE, ParserAction.IGNORE, ParserState.DCS_IGNORE);
+  table.addMany(EXECUTABLES, ParserState.DCS_PARAM, ParserAction.IGNORE, ParserState.DCS_PARAM);
+  table.add(0x7f, ParserState.DCS_PARAM, ParserAction.IGNORE, ParserState.DCS_PARAM);
+  table.addMany(r(0x1c, 0x20), ParserState.DCS_PARAM, ParserAction.IGNORE, ParserState.DCS_PARAM);
+  table.addMany(r(0x30, 0x3a), ParserState.DCS_PARAM, ParserAction.PARAM, ParserState.DCS_PARAM);
+  table.add(0x3b, ParserState.DCS_PARAM, ParserAction.PARAM, ParserState.DCS_PARAM);
+  table.addMany([0x3a, 0x3c, 0x3d, 0x3e, 0x3f], ParserState.DCS_PARAM, ParserAction.IGNORE, ParserState.DCS_IGNORE);
+  table.addMany(r(0x20, 0x30), ParserState.DCS_PARAM, ParserAction.COLLECT, ParserState.DCS_INTERMEDIATE);
+  table.addMany(EXECUTABLES, ParserState.DCS_INTERMEDIATE, ParserAction.IGNORE, ParserState.DCS_INTERMEDIATE);
+  table.add(0x7f, ParserState.DCS_INTERMEDIATE, ParserAction.IGNORE, ParserState.DCS_INTERMEDIATE);
+  table.addMany(r(0x1c, 0x20), ParserState.DCS_INTERMEDIATE, ParserAction.IGNORE, ParserState.DCS_INTERMEDIATE);
+  table.addMany(r(0x20, 0x30), ParserState.DCS_INTERMEDIATE, ParserAction.COLLECT, ParserState.DCS_INTERMEDIATE);
+  table.addMany(r(0x30, 0x40), ParserState.DCS_INTERMEDIATE, ParserAction.IGNORE, ParserState.DCS_IGNORE);
+  table.addMany(r(0x40, 0x7f), ParserState.DCS_INTERMEDIATE, ParserAction.DCS_HOOK, ParserState.DCS_PASSTHROUGH);
+  table.addMany(r(0x40, 0x7f), ParserState.DCS_PARAM, ParserAction.DCS_HOOK, ParserState.DCS_PASSTHROUGH);
+  table.addMany(r(0x40, 0x7f), ParserState.DCS_ENTRY, ParserAction.DCS_HOOK, ParserState.DCS_PASSTHROUGH);
+  table.addMany(EXECUTABLES, ParserState.DCS_PASSTHROUGH, ParserAction.DCS_PUT, ParserState.DCS_PASSTHROUGH);
+  table.addMany(PRINTABLES, ParserState.DCS_PASSTHROUGH, ParserAction.DCS_PUT, ParserState.DCS_PASSTHROUGH);
+  table.add(0x7f, ParserState.DCS_PASSTHROUGH, ParserAction.IGNORE, ParserState.DCS_PASSTHROUGH);
+  table.addMany([0x1b, 0x9c], ParserState.DCS_PASSTHROUGH, ParserAction.DCS_UNHOOK, ParserState.GROUND);
+  return table;
+})();
+
+/**
+ * Dummy DCS handler as default fallback.
+ */
+class DcsDummy implements IDcsHandler {
+  hook(collect: string, params: number[], flag: number): void { }
+  put(data: string, start: number, end: number): void { }
+  unhook(): void { }
+}
+
+/**
+ * EscapeSequenceParser.
+ * This class implements the ANSI/DEC compatible parser described by
+ * Paul Williams (https://vt100.net/emu/dec_ansi_parser).
+ * To implement custom ANSI compliant escape sequences it is not needed to
+ * alter this parser, instead consider registering a custom handler.
+ * For non ANSI compliant sequences change the transition table with
+ * the optional `transitions` contructor argument and
+ * reimplement the `parse` method.
+ * NOTE: The parameter element notation is currently not supported.
+ * TODO: implement error recovery hook via error handler return values
+ */
+export class EscapeSequenceParser extends Disposable implements IEscapeSequenceParser {
+  public initialState: number;
+  public currentState: number;
+
+  // buffers over several parse calls
+  protected _osc: string;
+  protected _params: number[];
+  protected _collect: string;
+
+  // handler lookup containers
+  protected _printHandler: (data: string, start: number, end: number) => void;
+  protected _executeHandlers: any;
+  protected _csiHandlers: any;
+  protected _escHandlers: any;
+  protected _oscHandlers: any;
+  protected _dcsHandlers: any;
+  protected _activeDcsHandler: IDcsHandler | null;
+  protected _errorHandler: (state: IParsingState) => IParsingState;
+
+  // fallback handlers
+  protected _printHandlerFb: (data: string, start: number, end: number) => void;
+  protected _executeHandlerFb: (code: number) => void;
+  protected _csiHandlerFb: (collect: string, params: number[], flag: number) => void;
+  protected _escHandlerFb: (collect: string, flag: number) => void;
+  protected _oscHandlerFb: (identifier: number, data: string) => void;
+  protected _dcsHandlerFb: IDcsHandler;
+  protected _errorHandlerFb: (state: IParsingState) => IParsingState;
+
+  constructor(readonly TRANSITIONS: TransitionTable = VT500_TRANSITION_TABLE) {
+    super();
+
+    this.initialState = ParserState.GROUND;
+    this.currentState = this.initialState;
+    this._osc = '';
+    this._params = [0];
+    this._collect = '';
+
+    // set default fallback handlers and handler lookup containers
+    this._printHandlerFb = (data, start, end): void => { };
+    this._executeHandlerFb = (code: number): void => { };
+    this._csiHandlerFb = (collect: string, params: number[], flag: number): void => { };
+    this._escHandlerFb = (collect: string, flag: number): void => { };
+    this._oscHandlerFb = (identifier: number, data: string): void => { };
+    this._dcsHandlerFb = new DcsDummy();
+    this._errorHandlerFb = (state: IParsingState): IParsingState => state;
+    this._printHandler = this._printHandlerFb;
+    this._executeHandlers = Object.create(null);
+    this._csiHandlers = Object.create(null);
+    this._escHandlers = Object.create(null);
+    this._oscHandlers = Object.create(null);
+    this._dcsHandlers = Object.create(null);
+    this._activeDcsHandler = null;
+    this._errorHandler = this._errorHandlerFb;
+  }
+
+  public dispose(): void {
+    this._printHandlerFb = null;
+    this._executeHandlerFb = null;
+    this._csiHandlerFb = null;
+    this._escHandlerFb = null;
+    this._oscHandlerFb = null;
+    this._dcsHandlerFb = null;
+    this._errorHandlerFb = null;
+    this._printHandler = null;
+    this._executeHandlers = null;
+    this._csiHandlers = null;
+    this._escHandlers = null;
+    this._oscHandlers = null;
+    this._dcsHandlers = null;
+    this._activeDcsHandler = null;
+    this._errorHandler = null;
+  }
+
+  setPrintHandler(callback: (data: string, start: number, end: number) => void): void {
+    this._printHandler = callback;
+  }
+  clearPrintHandler(): void {
+    this._printHandler = this._printHandlerFb;
+  }
+
+  setExecuteHandler(flag: string, callback: () => void): void {
+    this._executeHandlers[flag.charCodeAt(0)] = callback;
+  }
+  clearExecuteHandler(flag: string): void {
+    if (this._executeHandlers[flag.charCodeAt(0)]) delete this._executeHandlers[flag.charCodeAt(0)];
+  }
+  setExecuteHandlerFallback(callback: (code: number) => void): void {
+    this._executeHandlerFb = callback;
+  }
+
+  setCsiHandler(flag: string, callback: (params: number[], collect: string) => void): void {
+    this._csiHandlers[flag.charCodeAt(0)] = callback;
+  }
+  clearCsiHandler(flag: string): void {
+    if (this._csiHandlers[flag.charCodeAt(0)]) delete this._csiHandlers[flag.charCodeAt(0)];
+  }
+  setCsiHandlerFallback(callback: (collect: string, params: number[], flag: number) => void): void {
+    this._csiHandlerFb = callback;
+  }
+
+  setEscHandler(collectAndFlag: string, callback: () => void): void {
+    this._escHandlers[collectAndFlag] = callback;
+  }
+  clearEscHandler(collectAndFlag: string): void {
+    if (this._escHandlers[collectAndFlag]) delete this._escHandlers[collectAndFlag];
+  }
+  setEscHandlerFallback(callback: (collect: string, flag: number) => void): void {
+    this._escHandlerFb = callback;
+  }
+
+  setOscHandler(ident: number, callback: (data: string) => void): void {
+    this._oscHandlers[ident] = callback;
+  }
+  clearOscHandler(ident: number): void {
+    if (this._oscHandlers[ident]) delete this._oscHandlers[ident];
+  }
+  setOscHandlerFallback(callback: (identifier: number, data: string) => void): void {
+    this._oscHandlerFb = callback;
+  }
+
+  setDcsHandler(collectAndFlag: string, handler: IDcsHandler): void {
+    this._dcsHandlers[collectAndFlag] = handler;
+  }
+  clearDcsHandler(collectAndFlag: string): void {
+    if (this._dcsHandlers[collectAndFlag]) delete this._dcsHandlers[collectAndFlag];
+  }
+  setDcsHandlerFallback(handler: IDcsHandler): void {
+    this._dcsHandlerFb = handler;
+  }
+
+  setErrorHandler(callback: (state: IParsingState) => IParsingState): void {
+    this._errorHandler = callback;
+  }
+  clearErrorHandler(): void {
+    this._errorHandler = this._errorHandlerFb;
+  }
+
+  reset(): void {
+    this.currentState = this.initialState;
+    this._osc = '';
+    this._params = [0];
+    this._collect = '';
+    this._activeDcsHandler = null;
+  }
+
+  parse(data: string): void {
+    let code = 0;
+    let transition = 0;
+    let error = false;
+    let currentState = this.currentState;
+    let print = -1;
+    let dcs = -1;
+    let osc = this._osc;
+    let collect = this._collect;
+    let params = this._params;
+    const table: Uint8Array | number[] = this.TRANSITIONS.table;
+    let dcsHandler: IDcsHandler | null = this._activeDcsHandler;
+    let callback: Function | null = null;
+
+    // process input string
+    const l = data.length;
+    for (let i = 0; i < l; ++i) {
+      code = data.charCodeAt(i);
+
+      // shortcut for most chars (print action)
+      if (currentState === ParserState.GROUND && code > 0x1f && code < 0x80) {
+        print = (~print) ? print : i;
+        do i++;
+        while (i < l && data.charCodeAt(i) > 0x1f && data.charCodeAt(i) < 0x80);
+        i--;
+        continue;
+      }
+
+      // shortcut for CSI params
+      if (currentState === ParserState.CSI_PARAM && (code > 0x2f && code < 0x39)) {
+        params[params.length - 1] = params[params.length - 1] * 10 + code - 48;
+        continue;
+      }
+
+      // normal transition & action lookup
+      transition = (code < 0xa0) ? (table[currentState << 8 | code]) : DEFAULT_TRANSITION;
+      switch (transition >> 4) {
+        case ParserAction.PRINT:
+          print = (~print) ? print : i;
+          break;
+        case ParserAction.EXECUTE:
+          if (~print) {
+            this._printHandler(data, print, i);
+            print = -1;
+          }
+          callback = this._executeHandlers[code];
+          if (callback) callback();
+          else this._executeHandlerFb(code);
+          break;
+        case ParserAction.IGNORE:
+          // handle leftover print or dcs chars
+          if (~print) {
+            this._printHandler(data, print, i);
+            print = -1;
+          } else if (~dcs) {
+            dcsHandler.put(data, dcs, i);
+            dcs = -1;
+          }
+          break;
+        case ParserAction.ERROR:
+          // chars higher than 0x9f are handled by this action
+          // to keep the transition table small
+          if (code > 0x9f) {
+            switch (currentState) {
+              case ParserState.GROUND:
+                print = (~print) ? print : i;
+                break;
+              case ParserState.OSC_STRING:
+                osc += String.fromCharCode(code);
+                transition |= ParserState.OSC_STRING;
+                break;
+              case ParserState.CSI_IGNORE:
+                transition |= ParserState.CSI_IGNORE;
+                break;
+              case ParserState.DCS_IGNORE:
+                transition |= ParserState.DCS_IGNORE;
+                break;
+              case ParserState.DCS_PASSTHROUGH:
+                dcs = (~dcs) ? dcs : i;
+                transition |= ParserState.DCS_PASSTHROUGH;
+                break;
+              default:
+                error = true;
+            }
+          } else {
+            error = true;
+          }
+          // if we end up here a real error happened
+          if (error) {
+            const inject: IParsingState = this._errorHandler(
+              {
+                position: i,
+                code,
+                currentState,
+                print,
+                dcs,
+                osc,
+                collect,
+                params,
+                abort: false
+              });
+            if (inject.abort) return;
+          // TODO: inject return values
+            error = false;
+          }
+          break;
+        case ParserAction.CSI_DISPATCH:
+          callback = this._csiHandlers[code];
+          if (callback) callback(params, collect);
+          else this._csiHandlerFb(collect, params, code);
+          break;
+        case ParserAction.PARAM:
+          if (code === 0x3b) params.push(0);
+          else params[params.length - 1] = params[params.length - 1] * 10 + code - 48;
+          break;
+        case ParserAction.COLLECT:
+          collect += String.fromCharCode(code);
+          break;
+        case ParserAction.ESC_DISPATCH:
+          callback = this._escHandlers[collect + String.fromCharCode(code)];
+          if (callback) callback(collect, code);
+          else this._escHandlerFb(collect, code);
+          break;
+        case ParserAction.CLEAR:
+          if (~print) {
+            this._printHandler(data, print, i);
+            print = -1;
+          }
+          osc = '';
+          params = [0];
+          collect = '';
+          dcs = -1;
+          break;
+        case ParserAction.DCS_HOOK:
+          dcsHandler = this._dcsHandlers[collect + String.fromCharCode(code)];
+          if (!dcsHandler) dcsHandler = this._dcsHandlerFb;
+          dcsHandler.hook(collect, params, code);
+          break;
+        case ParserAction.DCS_PUT:
+          dcs = (~dcs) ? dcs : i;
+          break;
+        case ParserAction.DCS_UNHOOK:
+          if (dcsHandler) {
+            if (~dcs) dcsHandler.put(data, dcs, i);
+            dcsHandler.unhook();
+            dcsHandler = null;
+          }
+          if (code === 0x1b) transition |= ParserState.ESCAPE;
+          osc = '';
+          params = [0];
+          collect = '';
+          dcs = -1;
+          break;
+        case ParserAction.OSC_START:
+          if (~print) {
+            this._printHandler(data, print, i);
+            print = -1;
+          }
+          osc = '';
+          break;
+        case ParserAction.OSC_PUT:
+          osc += data.charAt(i);
+          break;
+        case ParserAction.OSC_END:
+          if (osc && code !== 0x18 && code !== 0x1a) {
+            // NOTE: OSC subparsing is not part of the original parser
+            // we do basic identifier parsing here to offer a jump table for OSC as well
+            const idx = osc.indexOf(';');
+            if (idx === -1) {
+              this._oscHandlerFb(-1, osc);  // this is an error (malformed OSC)
+            } else {
+              // Note: NaN is not handled here
+              // either catch it with the fallback handler
+              // or with an explicit NaN OSC handler
+              const identifier = parseInt(osc.substring(0, idx));
+              const content = osc.substring(idx + 1);
+              callback = this._oscHandlers[identifier];
+              if (callback) callback(content);
+              else this._oscHandlerFb(identifier, content);
+            }
+          }
+          if (code === 0x1b) transition |= ParserState.ESCAPE;
+          osc = '';
+          params = [0];
+          collect = '';
+          dcs = -1;
+          break;
+      }
+      currentState = transition & 15;
+    }
+
+    // push leftover pushable buffers to terminal
+    if (currentState === ParserState.GROUND && ~print) {
+      this._printHandler(data, print, data.length);
+    } else if (currentState === ParserState.DCS_PASSTHROUGH && ~dcs && dcsHandler) {
+      dcsHandler.put(data, dcs, data.length);
+    }
+
+    // save non pushable buffers
+    this._osc = osc;
+    this._collect = collect;
+    this._params = params;
+
+    // save active dcs handler reference
+    this._activeDcsHandler = dcsHandler;
+
+    // save state
+    this.currentState = currentState;
+  }
+}
@@ -13,18 +13,6 @@ describe('EventEmitter', () => {
    eventEmitter = new EventEmitter();
  });

-  describe('once', () => {
-    it('should trigger the listener only once', () => {
-      let count = 0;
-      const listener = () => count++;
-      eventEmitter.once('test', listener);
-      eventEmitter.emit('test');
-      assert.equal(count, 1);
-      eventEmitter.emit('test');
-      assert.equal(count, 1);
-    });
-  });
-
  describe('emit', () => {
    it('should emit events to listeners', () => {
      let count1 = 0;
@@ -3,32 +3,55 @@
 * @license MIT
 */

-import { IEventEmitter, IListenerType } from './Interfaces';
+import { XtermListener } from './Types';
+import { IEventEmitter, IDisposable } from 'xterm';
+import { Disposable } from './common/Lifecycle';

-export class EventEmitter implements IEventEmitter {
-  private _events: {[type: string]: IListenerType[]};
+export class EventEmitter extends Disposable implements IEventEmitter, IDisposable {
+  private _events: {[type: string]: XtermListener[]};

  constructor() {
+    super();
    // Restore the previous events if available, this will happen if the
    // constructor is called multiple times on the same object (terminal reset).
    this._events = this._events || {};
  }

-  public on(type: string, listener: IListenerType): void {
+  public on(type: string, listener: XtermListener): void {
    this._events[type] = this._events[type] || [];
    this._events[type].push(listener);
  }

-  public off(type: string, listener: IListenerType): void {
+  /**
+   * Adds a disposabe listener to the EventEmitter, returning the disposable.
+   * @param type The event type.
+   * @param handler The handler for the listener.
+   */
+  public addDisposableListener(type: string, handler: XtermListener): IDisposable {
+    // TODO: Rename addDisposableEventListener to more easily disambiguate from Dom listener
+    this.on(type, handler);
+    return {
+      dispose: () => {
+        if (!handler) {
+          // Already disposed
+          return;
+        }
+        this.off(type, handler);
+        handler = null;
+      }
+    };
+  }
+
+  public off(type: string, listener: XtermListener): void {
    if (!this._events[type]) {
      return;
    }

-    let obj = this._events[type];
+    const obj = this._events[type];
    let i = obj.length;

    while (i--) {
-      if (obj[i] === listener || obj[i].listener === listener) {
+      if (obj[i] === listener) {
        obj.splice(i, 1);
        return;
      }
@@ -41,31 +64,22 @@ export class EventEmitter implements IEventEmitter {
    }
  }

-  public once(type: string, listener: IListenerType): void {
-    function on(): void {
-      let args = Array.prototype.slice.call(arguments);
-      this.off(type, on);
-      listener.apply(this, args);
-    }
-    (<any>on).listener = listener;
-    this.on(type, on);
-  }
-
  public emit(type: string, ...args: any[]): void {
    if (!this._events[type]) {
      return;
    }
-    let obj = this._events[type];
+    const obj = this._events[type];
    for (let i = 0; i < obj.length; i++) {
      obj[i].apply(this, args);
    }
  }

-  public listeners(type: string): IListenerType[] {
+  public listeners(type: string): XtermListener[] {
    return this._events[type] || [];
  }

-  protected destroy(): void {
+  public dispose(): void {
+    super.dispose();
    this._events = {};
  }
 }
@@ -3,80 +3,476 @@
 * @license MIT
 */

-import { assert } from 'chai';
+import { assert, expect } from 'chai';
 import { InputHandler } from './InputHandler';
 import { MockInputHandlingTerminal } from './utils/TestUtils.test';
+import { NULL_CELL_CHAR, NULL_CELL_CODE, NULL_CELL_WIDTH, CHAR_DATA_CHAR_INDEX } from './Buffer';
+import { Terminal } from './Terminal';
+import { IBufferLine } from './Types';
+
+
+// TODO: This and the sections related to this object in associated tests can be
+// removed safely after InputHandler refactors are finished
+class OldInputHandler extends InputHandler {
+  public eraseInLine(params: number[]): void {
+    switch (params[0]) {
+      case 0:
+        this.eraseRight(this._terminal.buffer.x, this._terminal.buffer.y);
+        break;
+      case 1:
+        this.eraseLeft(this._terminal.buffer.x, this._terminal.buffer.y);
+        break;
+      case 2:
+        this.eraseLine(this._terminal.buffer.y);
+        break;
+    }
+  }
+
+  public eraseInDisplay(params: number[]): void {
+    let j;
+    switch (params[0]) {
+      case 0:
+        this.eraseRight(this._terminal.buffer.x, this._terminal.buffer.y);
+        j = this._terminal.buffer.y + 1;
+        for (; j < this._terminal.rows; j++) {
+          this.eraseLine(j);
+        }
+        break;
+      case 1:
+        this.eraseLeft(this._terminal.buffer.x, this._terminal.buffer.y);
+        j = this._terminal.buffer.y;
+        while (j--) {
+          this.eraseLine(j);
+        }
+        break;
+      case 2:
+        j = this._terminal.rows;
+        while (j--) this.eraseLine(j);
+        break;
+      case 3:
+        // Clear scrollback (everything not in viewport)
+        const scrollBackSize = this._terminal.buffer.lines.length - this._terminal.rows;
+        if (scrollBackSize > 0) {
+          this._terminal.buffer.lines.trimStart(scrollBackSize);
+          this._terminal.buffer.ybase = Math.max(this._terminal.buffer.ybase - scrollBackSize, 0);
+          this._terminal.buffer.ydisp = Math.max(this._terminal.buffer.ydisp - scrollBackSize, 0);
+          // Force a scroll event to refresh viewport
+          this._terminal.emit('scroll', 0);
+        }
+        break;
+    }
+  }
+
+  /**
+   * Erase in the identified line everything from "x" to the end of the line (right).
+   * @param x The column from which to start erasing to the end of the line.
+   * @param y The line in which to operate.
+   */
+  public eraseRight(x: number, y: number): void {
+    const line = this._terminal.buffer.lines.get(this._terminal.buffer.ybase + y);
+    if (!line) {
+      return;
+    }
+    line.replaceCells(x, this._terminal.cols, [this._terminal.eraseAttr(), NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]);
+    this._terminal.updateRange(y);
+  }
+
+  /**
+   * Erase in the identified line everything from "x" to the start of the line (left).
+   * @param x The column from which to start erasing to the start of the line.
+   * @param y The line in which to operate.
+   */
+  public eraseLeft(x: number, y: number): void {
+    const line = this._terminal.buffer.lines.get(this._terminal.buffer.ybase + y);
+    if (!line) {
+      return;
+    }
+    line.replaceCells(0, x + 1, [this._terminal.eraseAttr(), NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]);
+    this._terminal.updateRange(y);
+  }
+
+  /**
+   * Erase all content in the given line
+   * @param y The line to erase all of its contents.
+   */
+  public eraseLine(y: number): void {
+    this.eraseRight(0, y);
+  }
+}

 describe('InputHandler', () => {
  describe('save and restore cursor', () => {
-    let terminal = new MockInputHandlingTerminal();
+    const terminal = new MockInputHandlingTerminal();
    terminal.buffer.x = 1;
    terminal.buffer.y = 2;
-    let inputHandler = new InputHandler(terminal);
+    terminal.curAttr = 3;
+    const inputHandler = new InputHandler(terminal);
    // Save cursor position
    inputHandler.saveCursor([]);
    assert.equal(terminal.buffer.x, 1);
    assert.equal(terminal.buffer.y, 2);
+    assert.equal(terminal.curAttr, 3);
    // Change cursor position
    terminal.buffer.x = 10;
    terminal.buffer.y = 20;
+    terminal.curAttr = 30;
    // Restore cursor position
    inputHandler.restoreCursor([]);
    assert.equal(terminal.buffer.x, 1);
    assert.equal(terminal.buffer.y, 2);
+    assert.equal(terminal.curAttr, 3);
  });
  describe('setCursorStyle', () => {
    it('should call Terminal.setOption with correct params', () => {
-      let terminal = new MockInputHandlingTerminal();
-      let inputHandler = new InputHandler(terminal);
+      const terminal = new MockInputHandlingTerminal();
+      const inputHandler = new InputHandler(terminal);
+      const collect = ' ';

-      inputHandler.setCursorStyle([0]);
+      inputHandler.setCursorStyle([0], collect);
      assert.equal(terminal.options['cursorStyle'], 'block');
      assert.equal(terminal.options['cursorBlink'], true);

      terminal.options = {};
-      inputHandler.setCursorStyle([1]);
+      inputHandler.setCursorStyle([1], collect);
      assert.equal(terminal.options['cursorStyle'], 'block');
      assert.equal(terminal.options['cursorBlink'], true);

      terminal.options = {};
-      inputHandler.setCursorStyle([2]);
+      inputHandler.setCursorStyle([2], collect);
      assert.equal(terminal.options['cursorStyle'], 'block');
      assert.equal(terminal.options['cursorBlink'], false);

      terminal.options = {};
-      inputHandler.setCursorStyle([3]);
+      inputHandler.setCursorStyle([3], collect);
      assert.equal(terminal.options['cursorStyle'], 'underline');
      assert.equal(terminal.options['cursorBlink'], true);

      terminal.options = {};
-      inputHandler.setCursorStyle([4]);
+      inputHandler.setCursorStyle([4], collect);
      assert.equal(terminal.options['cursorStyle'], 'underline');
      assert.equal(terminal.options['cursorBlink'], false);

      terminal.options = {};
-      inputHandler.setCursorStyle([5]);
+      inputHandler.setCursorStyle([5], collect);
      assert.equal(terminal.options['cursorStyle'], 'bar');
      assert.equal(terminal.options['cursorBlink'], true);

      terminal.options = {};
-      inputHandler.setCursorStyle([6]);
+      inputHandler.setCursorStyle([6], collect);
      assert.equal(terminal.options['cursorStyle'], 'bar');
      assert.equal(terminal.options['cursorBlink'], false);
    });
  });
  describe('setMode', () => {
    it('should toggle Terminal.bracketedPasteMode', () => {
-      let terminal = new MockInputHandlingTerminal();
-      terminal.prefix = '?';
+      const terminal = new MockInputHandlingTerminal();
+      const collect = '?';
      terminal.bracketedPasteMode = false;
-      let inputHandler = new InputHandler(terminal);
+      const inputHandler = new InputHandler(terminal);
      // Set bracketed paste mode
-      inputHandler.setMode([2004]);
+      inputHandler.setMode([2004], collect);
      assert.equal(terminal.bracketedPasteMode, true);
      // Reset bracketed paste mode
-      inputHandler.resetMode([2004]);
+      inputHandler.resetMode([2004], collect);
      assert.equal(terminal.bracketedPasteMode, false);
    });
  });
+  describe('regression tests', function(): void {
+    type CharData = [number, string, number, number];
+
+    function lineContent(line: IBufferLine): string {
+      let content = '';
+      for (let i = 0; i < line.length; ++i) content += line.get(i)[CHAR_DATA_CHAR_INDEX];
+      return content;
+    }
+
+    function termContent(term: Terminal): string[] {
+      const result = [];
+      for (let i = 0; i < term.rows; ++i) result.push(lineContent(term.buffer.lines.get(i)));
+      return result;
+    }
+
+    it('insertChars', function(): void {
+      const term = new Terminal();
+      const inputHandler = new InputHandler(term);
+
+      // old variant of the method
+      function insertChars(params: number[]): void {
+        let param = params[0];
+        if (param < 1) param = 1;
+
+        // make buffer local for faster access
+        const buffer = term.buffer;
+
+        const row = buffer.y + buffer.ybase;
+        let j = buffer.x;
+        const ch: CharData = [term.eraseAttr(), NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]; // xterm
+        while (param-- && j < term.cols) {
+          buffer.lines.get(row).splice(j++, 0, ch);
+          buffer.lines.get(row).pop();
+        }
+      }
+
+      // insert some data in first and second line
+      inputHandler.parse(Array(term.cols - 9).join('a'));
+      inputHandler.parse('1234567890');
+      inputHandler.parse(Array(term.cols - 9).join('a'));
+      inputHandler.parse('1234567890');
+      const line1: IBufferLine = term.buffer.lines.get(0); // line for old variant
+      const line2: IBufferLine = term.buffer.lines.get(1); // line for new variant
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '1234567890');
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '1234567890');
+
+      // insert one char from params = [0]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      insertChars([0]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + ' 123456789');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.insertChars([0]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + ' 123456789');
+      expect(lineContent(line2)).equals(lineContent(line1));
+
+      // insert one char from params = [1]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      insertChars([1]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '  12345678');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.insertChars([1]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '  12345678');
+      expect(lineContent(line2)).equals(lineContent(line1));
+
+      // insert two chars from params = [2]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      insertChars([2]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '    123456');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.insertChars([2]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '    123456');
+      expect(lineContent(line2)).equals(lineContent(line1));
+
+      // insert 10 chars from params = [10]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      insertChars([10]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '          ');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.insertChars([10]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '          ');
+      expect(lineContent(line2)).equals(lineContent(line1));
+    });
+    it('deleteChars', function(): void {
+      const term = new Terminal();
+      const inputHandler = new InputHandler(term);
+
+      // old variant of the method
+      function deleteChars(params: number[]): void {
+        let param: number = params[0];
+        if (param < 1) {
+          param = 1;
+        }
+
+        // make buffer local for faster access
+        const buffer = term.buffer;
+
+        const row = buffer.y + buffer.ybase;
+        const ch: CharData = [term.eraseAttr(), NULL_CELL_CHAR, NULL_CELL_WIDTH, NULL_CELL_CODE]; // xterm
+        while (param--) {
+          buffer.lines.get(row).splice(buffer.x, 1);
+          buffer.lines.get(row).push(ch);
+        }
+        term.updateRange(buffer.y);
+      }
+
+      // insert some data in first and second line
+      inputHandler.parse(Array(term.cols - 9).join('a'));
+      inputHandler.parse('1234567890');
+      inputHandler.parse(Array(term.cols - 9).join('a'));
+      inputHandler.parse('1234567890');
+      const line1: IBufferLine = term.buffer.lines.get(0); // line for old variant
+      const line2: IBufferLine = term.buffer.lines.get(1); // line for new variant
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '1234567890');
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '1234567890');
+
+      // delete one char from params = [0]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      deleteChars([0]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '234567890 ');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.deleteChars([0]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '234567890 ');
+      expect(lineContent(line2)).equals(lineContent(line1));
+
+      // insert one char from params = [1]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      deleteChars([1]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '34567890  ');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.deleteChars([1]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '34567890  ');
+      expect(lineContent(line2)).equals(lineContent(line1));
+
+      // insert two chars from params = [2]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      deleteChars([2]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '567890    ');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.deleteChars([2]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '567890    ');
+      expect(lineContent(line2)).equals(lineContent(line1));
+
+      // insert 10 chars from params = [10]
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      deleteChars([10]);
+      expect(lineContent(line1)).equals(Array(term.cols - 9).join('a') + '          ');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.deleteChars([10]);
+      expect(lineContent(line2)).equals(Array(term.cols - 9).join('a') + '          ');
+      expect(lineContent(line2)).equals(lineContent(line1));
+    });
+    it('eraseInLine', function(): void {
+      const term = new Terminal();
+      const inputHandler = new InputHandler(term);
+      const oldInputHandler = new OldInputHandler(term);
+
+      // fill 6 lines to test 3 different states
+      inputHandler.parse(Array(term.cols + 1).join('a'));
+      inputHandler.parse(Array(term.cols + 1).join('a'));
+      inputHandler.parse(Array(term.cols + 1).join('a'));
+      inputHandler.parse(Array(term.cols + 1).join('a'));
+      inputHandler.parse(Array(term.cols + 1).join('a'));
+      inputHandler.parse(Array(term.cols + 1).join('a'));
+
+      // params[0] - right erase
+      term.buffer.y = 0;
+      term.buffer.x = 70;
+      oldInputHandler.eraseInLine([0]);
+      expect(lineContent(term.buffer.lines.get(0))).equals(Array(71).join('a') + '          ');
+      term.buffer.y = 1;
+      term.buffer.x = 70;
+      inputHandler.eraseInLine([0]);
+      expect(lineContent(term.buffer.lines.get(1))).equals(Array(71).join('a') + '          ');
+
+      // params[1] - left erase
+      term.buffer.y = 2;
+      term.buffer.x = 70;
+      oldInputHandler.eraseInLine([1]);
+      expect(lineContent(term.buffer.lines.get(2))).equals(Array(71).join(' ') + ' aaaaaaaaa');
+      term.buffer.y = 3;
+      term.buffer.x = 70;
+      inputHandler.eraseInLine([1]);
+      expect(lineContent(term.buffer.lines.get(3))).equals(Array(71).join(' ') + ' aaaaaaaaa');
+
+      // params[1] - left erase
+      term.buffer.y = 4;
+      term.buffer.x = 70;
+      oldInputHandler.eraseInLine([2]);
+      expect(lineContent(term.buffer.lines.get(4))).equals(Array(term.cols + 1).join(' '));
+      term.buffer.y = 5;
+      term.buffer.x = 70;
+      inputHandler.eraseInLine([2]);
+      expect(lineContent(term.buffer.lines.get(5))).equals(Array(term.cols + 1).join(' '));
+
+    });
+    it('eraseInDisplay', function(): void {
+      const termOld = new Terminal();
+      const inputHandlerOld = new OldInputHandler(termOld);
+      const termNew = new Terminal();
+      const inputHandlerNew = new InputHandler(termNew);
+
+      // fill display with a's
+      for (let i = 0; i < termOld.rows; ++i) inputHandlerOld.parse(Array(termOld.cols + 1).join('a'));
+      for (let i = 0; i < termNew.rows; ++i) inputHandlerNew.parse(Array(termOld.cols + 1).join('a'));
+      const data = [];
+      for (let i = 0; i < termOld.rows; ++i) data.push(Array(termOld.cols + 1).join('a'));
+      expect(termContent(termOld)).eql(data);
+      expect(termContent(termOld)).eql(termContent(termNew));
+
+      // params [0] - right and below erase
+      termOld.buffer.y = 5;
+      termOld.buffer.x = 40;
+      inputHandlerOld.eraseInDisplay([0]);
+      termNew.buffer.y = 5;
+      termNew.buffer.x = 40;
+      inputHandlerNew.eraseInDisplay([0]);
+      expect(termContent(termNew)).eql(termContent(termOld));
+
+      // reset
+      termOld.buffer.y = 0;
+      termOld.buffer.x = 0;
+      termNew.buffer.y = 0;
+      termNew.buffer.x = 0;
+      for (let i = 0; i < termOld.rows; ++i) inputHandlerOld.parse(Array(termOld.cols + 1).join('a'));
+      for (let i = 0; i < termNew.rows; ++i) inputHandlerNew.parse(Array(termOld.cols + 1).join('a'));
+
+      // params [1] - left and above
+      termOld.buffer.y = 5;
+      termOld.buffer.x = 40;
+      inputHandlerOld.eraseInDisplay([1]);
+      termNew.buffer.y = 5;
+      termNew.buffer.x = 40;
+      inputHandlerNew.eraseInDisplay([1]);
+      expect(termContent(termNew)).eql(termContent(termOld));
+
+      // reset
+      termOld.buffer.y = 0;
+      termOld.buffer.x = 0;
+      termNew.buffer.y = 0;
+      termNew.buffer.x = 0;
+      for (let i = 0; i < termOld.rows; ++i) inputHandlerOld.parse(Array(termOld.cols + 1).join('a'));
+      for (let i = 0; i < termNew.rows; ++i) inputHandlerNew.parse(Array(termOld.cols + 1).join('a'));
+
+      // params [2] - whole screen
+      termOld.buffer.y = 5;
+      termOld.buffer.x = 40;
+      inputHandlerOld.eraseInDisplay([2]);
+      termNew.buffer.y = 5;
+      termNew.buffer.x = 40;
+      inputHandlerNew.eraseInDisplay([2]);
+      expect(termContent(termNew)).eql(termContent(termOld));
+    });
+  });
+  it('convertEol setting', function(): void {
+    // not converting
+    let s = '';
+    const termNotConverting = new Terminal({cols: 15, rows: 10});
+    (termNotConverting as any)._inputHandler.parse('Hello\nWorld');
+    for (let i = 0; i < termNotConverting.cols; ++i) {
+      s += termNotConverting.buffer.lines.get(0).get(i)[CHAR_DATA_CHAR_INDEX];
+    }
+    expect(s).equals('Hello          ');
+    s = '';
+    for (let i = 0; i < termNotConverting.cols; ++i) {
+      s += termNotConverting.buffer.lines.get(1).get(i)[CHAR_DATA_CHAR_INDEX];
+    }
+    expect(s).equals('     World     ');
+
+    // converting
+    s = '';
+    const termConverting = new Terminal({cols: 15, rows: 10, convertEol: true});
+    (termConverting as any)._inputHandler.parse('Hello\nWorld');
+    for (let i = 0; i < termConverting.cols; ++i) {
+      s += termConverting.buffer.lines.get(0).get(i)[CHAR_DATA_CHAR_INDEX];
+    }
+    expect(s).equals('Hello          ');
+    s = '';
+    for (let i = 0; i < termConverting.cols; ++i) {
+      s += termConverting.buffer.lines.get(1).get(i)[CHAR_DATA_CHAR_INDEX];
+    }
+    expect(s).equals('World          ');
+  });
 });
@@ -1,354 +0,0 @@
-/**
- * Copyright (c) 2017 The xterm.js authors. All rights reserved.
- * @license MIT
- */
-
-import { ILinkMatcherOptions } from './Interfaces';
-import { LinkMatcherHandler, LinkMatcherValidationCallback, Charset, LineData } from './Types';
-import { IColorSet, IRenderer } from './renderer/Interfaces';
-import { IMouseZoneManager } from './input/Interfaces';
-
-export interface IBrowser {
-  isNode: boolean;
-  userAgent: string;
-  platform: string;
-  isFirefox: boolean;
-  isMSIE: boolean;
-  isMac: boolean;
-  isIpad: boolean;
-  isIphone: boolean;
-  isMSWindows: boolean;
-}
-
-export interface IBufferAccessor {
-  buffer: IBuffer;
-}
-
-export interface IElementAccessor {
-  element: HTMLElement;
-}
-
-export interface ILinkifierAccessor {
-  linkifier: ILinkifier;
-}
-
-export interface ITerminal extends ILinkifierAccessor, IBufferAccessor, IElementAccessor, IEventEmitter {
-  selectionManager: ISelectionManager;
-  charMeasure: ICharMeasure;
-  textarea: HTMLTextAreaElement;
-  renderer: IRenderer;
-  rows: number;
-  cols: number;
-  browser: IBrowser;
-  writeBuffer: string[];
-  cursorHidden: boolean;
-  cursorState: number;
-  defAttr: number;
-  options: ITerminalOptions;
-  buffers: IBufferSet;
-  isFocused: boolean;
-  mouseHelper: IMouseHelper;
-  bracketedPasteMode: boolean;
-
-  /**
-   * Emit the 'data' event and populate the given data.
-   * @param data The data to populate in the event.
-   */
-  handler(data: string): void;
-  scrollLines(disp: number, suppressScrollEvent?: boolean): void;
-  cancel(ev: Event, force?: boolean): boolean | void;
-  log(text: string): void;
-  reset(): void;
-  showCursor(): void;
-  blankLine(cur?: boolean, isWrapped?: boolean, cols?: number): LineData;
-  refresh(start: number, end: number): void;
-}
-
-/**
- * This interface encapsulates everything needed from the Terminal by the
- * InputHandler. This cleanly separates the large amount of methods needed by
- * InputHandler cleanly from the ITerminal interface.
- */
-export interface IInputHandlingTerminal extends IEventEmitter {
-  element: HTMLElement;
-  options: ITerminalOptions;
-  cols: number;
-  rows: number;
-  charset: Charset;
-  gcharset: number;
-  glevel: number;
-  charsets: Charset[];
-  applicationKeypad: boolean;
-  applicationCursor: boolean;
-  originMode: boolean;
-  insertMode: boolean;
-  wraparoundMode: boolean;
-  bracketedPasteMode: boolean;
-  defAttr: number;
-  curAttr: number;
-  prefix: string;
-  savedCols: number;
-  x10Mouse: boolean;
-  vt200Mouse: boolean;
-  normalMouse: boolean;
-  mouseEvents: boolean;
-  sendFocus: boolean;
-  utfMouse: boolean;
-  sgrMouse: boolean;
-  urxvtMouse: boolean;
-  cursorHidden: boolean;
-
-  buffers: IBufferSet;
-  buffer: IBuffer;
-  viewport: IViewport;
-  selectionManager: ISelectionManager;
-
-  bell(): void;
-  focus(): void;
-  convertEol: boolean;
-  updateRange(y: number): void;
-  scroll(isWrapped?: boolean): void;
-  setgLevel(g: number): void;
-  eraseAttr(): number;
-  eraseRight(x: number, y: number): void;
-  eraseLine(y: number): void;
-  eraseLeft(x: number, y: number): void;
-  blankLine(cur?: boolean, isWrapped?: boolean): LineData;
-  is(term: string): boolean;
-  send(data: string): void;
-  setgCharset(g: number, charset: Charset): void;
-  resize(x: number, y: number): void;
-  log(text: string, data?: any): void;
-  reset(): void;
-  showCursor(): void;
-  refresh(start: number, end: number): void;
-  matchColor(r1: number, g1: number, b1: number): number;
-  error(text: string, data?: any): void;
-  setOption(key: string, value: any): void;
-}
-
-export interface ITerminalOptions {
-  bellSound?: string;
-  bellStyle?: string;
-  cancelEvents?: boolean;
-  cols?: number;
-  convertEol?: boolean;
-  cursorBlink?: boolean;
-  cursorStyle?: string;
-  debug?: boolean;
-  disableStdin?: boolean;
-  enableBold?: boolean;
-  fontSize?: number;
-  fontFamily?: string;
-  handler?: (data: string) => void;
-  letterSpacing?: number;
-  lineHeight?: number;
-  rows?: number;
-  screenKeys?: boolean;
-  scrollback?: number;
-  tabStopWidth?: number;
-  termName?: string;
-  theme?: ITheme;
-  useFlowControl?: boolean;
-}
-
-export interface IBuffer {
-  lines: ICircularList<LineData>;
-  ydisp: number;
-  ybase: number;
-  y: number;
-  x: number;
-  tabs: any;
-  scrollBottom: number;
-  scrollTop: number;
-  savedY: number;
-  savedX: number;
-  isCursorInViewport: boolean;
-  translateBufferLineToString(lineIndex: number, trimRight: boolean, startCol?: number, endCol?: number): string;
-  nextStop(x?: number): number;
-  prevStop(x?: number): number;
-}
-
-export interface IBufferSet {
-  alt: IBuffer;
-  normal: IBuffer;
-  active: IBuffer;
-
-  activateNormalBuffer(): void;
-  activateAltBuffer(): void;
-}
-
-export interface IMouseHelper {
-  getCoords(event: {pageX: number, pageY: number}, element: HTMLElement, charMeasure: ICharMeasure, lineHeight: number, colCount: number, rowCount: number, isSelection?: boolean): [number, number];
-  getRawByteCoords(event: MouseEvent, element: HTMLElement, charMeasure: ICharMeasure, lineHeight: number, colCount: number, rowCount: number): { x: number, y: number };
-}
-
-export interface IViewport {
-  syncScrollArea(): void;
-  onWheel(ev: WheelEvent): void;
-  onTouchStart(ev: TouchEvent): void;
-  onTouchMove(ev: TouchEvent): void;
-  onThemeChanged(colors: IColorSet): void;
-}
-
-export interface ISelectionManager {
-  selectionText: string;
-  selectionStart: [number, number];
-  selectionEnd: [number, number];
-
-  disable(): void;
-  enable(): void;
-  setBuffer(buffer: IBuffer): void;
-  setSelection(row: number, col: number, length: number): void;
-}
-
-export interface ICompositionHelper {
-  compositionstart(): void;
-  compositionupdate(ev: CompositionEvent): void;
-  compositionend(): void;
-  updateCompositionElements(dontRecurse?: boolean): void;
-  keydown(ev: KeyboardEvent): boolean;
-}
-
-export interface ICharMeasure {
-  width: number;
-  height: number;
-  measure(options: ITerminalOptions): void;
-}
-
-export interface ILinkifier extends IEventEmitter {
-  attachToDom(mouseZoneManager: IMouseZoneManager): void;
-  linkifyRows(start: number, end: number): void;
-  setHypertextLinkHandler(handler: LinkMatcherHandler): void;
-  setHypertextValidationCallback(callback: LinkMatcherValidationCallback): void;
-  registerLinkMatcher(regex: RegExp, handler: LinkMatcherHandler, options?: ILinkMatcherOptions): number;
-  deregisterLinkMatcher(matcherId: number): boolean;
-}
-
-export interface ICircularList<T> extends IEventEmitter {
-  length: number;
-  maxLength: number;
-  forEach: (callbackfn: (value: T, index: number) => void) => void;
-
-  get(index: number): T;
-  set(index: number, value: T): void;
-  push(value: T): void;
-  pop(): T;
-  splice(start: number, deleteCount: number, ...items: T[]): void;
-  trimStart(count: number): void;
-  shiftElements(start: number, count: number, offset: number): void;
-}
-
-export interface IEventEmitter {
-  on(type: string, listener: IListenerType): void;
-  off(type: string, listener: IListenerType): void;
-  emit(type: string, data?: any): void;
-}
-
-export interface IListenerType {
-    (data?: any): void;
-    listener?: (data?: any) => void;
-};
-
-export interface ILinkMatcherOptions {
-  /**
-   * The index of the link from the regex.match(text) call. This defaults to 0
-   * (for regular expressions without capture groups).
-   */
-  matchIndex?: number;
-  /**
-   * A callback that validates an individual link, returning true if valid and
-   * false if invalid.
-   */
-  validationCallback?: LinkMatcherValidationCallback;
-  /**
-   * A callback that fires when the mouse hovers over a link.
-   */
-  tooltipCallback?: LinkMatcherHandler;
-  /**
-   * A callback that fires when the mouse leaves a link that was hovered.
-   */
-  leaveCallback?: () => void;
-  /**
-   * The priority of the link matcher, this defines the order in which the link
-   * matcher is evaluated relative to others, from highest to lowest. The
-   * default value is 0.
-   */
-  priority?: number;
-}
-
-/**
- * Handles actions generated by the parser.
- */
-export interface IInputHandler {
-  addChar(char: string, code: number): void;
-
-  /** C0 BEL */ bell(): void;
-  /** C0 LF */ lineFeed(): void;
-  /** C0 CR */ carriageReturn(): void;
-  /** C0 BS */ backspace(): void;
-  /** C0 HT */ tab(): void;
-  /** C0 SO */ shiftOut(): void;
-  /** C0 SI */ shiftIn(): void;
-
-  /** CSI @ */ insertChars(params?: number[]): void;
-  /** CSI A */ cursorUp(params?: number[]): void;
-  /** CSI B */ cursorDown(params?: number[]): void;
-  /** CSI C */ cursorForward(params?: number[]): void;
-  /** CSI D */ cursorBackward(params?: number[]): void;
-  /** CSI E */ cursorNextLine(params?: number[]): void;
-  /** CSI F */ cursorPrecedingLine(params?: number[]): void;
-  /** CSI G */ cursorCharAbsolute(params?: number[]): void;
-  /** CSI H */ cursorPosition(params?: number[]): void;
-  /** CSI I */ cursorForwardTab(params?: number[]): void;
-  /** CSI J */ eraseInDisplay(params?: number[]): void;
-  /** CSI K */ eraseInLine(params?: number[]): void;
-  /** CSI L */ insertLines(params?: number[]): void;
-  /** CSI M */ deleteLines(params?: number[]): void;
-  /** CSI P */ deleteChars(params?: number[]): void;
-  /** CSI S */ scrollUp(params?: number[]): void;
-  /** CSI T */ scrollDown(params?: number[]): void;
-  /** CSI X */ eraseChars(params?: number[]): void;
-  /** CSI Z */ cursorBackwardTab(params?: number[]): void;
-  /** CSI ` */ charPosAbsolute(params?: number[]): void;
-  /** CSI a */ HPositionRelative(params?: number[]): void;
-  /** CSI b */ repeatPrecedingCharacter(params?: number[]): void;
-  /** CSI c */ sendDeviceAttributes(params?: number[]): void;
-  /** CSI d */ linePosAbsolute(params?: number[]): void;
-  /** CSI e */ VPositionRelative(params?: number[]): void;
-  /** CSI f */ HVPosition(params?: number[]): void;
-  /** CSI g */ tabClear(params?: number[]): void;
-  /** CSI h */ setMode(params?: number[]): void;
-  /** CSI l */ resetMode(params?: number[]): void;
-  /** CSI m */ charAttributes(params?: number[]): void;
-  /** CSI n */ deviceStatus(params?: number[]): void;
-  /** CSI p */ softReset(params?: number[]): void;
-  /** CSI q */ setCursorStyle(params?: number[]): void;
-  /** CSI r */ setScrollRegion(params?: number[]): void;
-  /** CSI s */ saveCursor(params?: number[]): void;
-  /** CSI u */ restoreCursor(params?: number[]): void;
-}
-
-export interface ITheme {
-  foreground?: string;
-  background?: string;
-  cursor?: string;
-  cursorAccent?: string;
-  selection?: string;
-  black?: string;
-  red?: string;
-  green?: string;
-  yellow?: string;
-  blue?: string;
-  magenta?: string;
-  cyan?: string;
-  white?: string;
-  brightBlack?: string;
-  brightRed?: string;
-  brightGreen?: string;
-  brightYellow?: string;
-  brightBlue?: string;
-  brightMagenta?: string;
-  brightCyan?: string;
-  brightWhite?: string;
-}
@@ -4,24 +4,26 @@
 */

 import { assert } from 'chai';
-import { ITerminal, ILinkifier, IBuffer, IBufferAccessor, IElementAccessor } from './Interfaces';
+import { IMouseZoneManager, IMouseZone } from './ui/Types';
+import { ILinkMatcher, ITerminal, IBufferLine } from './Types';
 import { Linkifier } from './Linkifier';
-import { LinkMatcher, LineData } from './Types';
-import { IMouseZoneManager, IMouseZone } from './input/Interfaces';
-import { MockBuffer } from './utils/TestUtils.test';
-import { CircularList } from './utils/CircularList';
+import { MockBuffer, MockTerminal } from './utils/TestUtils.test';
+import { CircularList } from './common/CircularList';
+import { BufferLine } from './BufferLine';

 class TestLinkifier extends Linkifier {
-  constructor(_terminal: IBufferAccessor & IElementAccessor) {
-    super(_terminal);
-    Linkifier.TIME_BEFORE_LINKIFY = 0;
+  constructor(terminal: ITerminal) {
+    super(terminal);
+    (<any>Linkifier).TIME_BEFORE_LINKIFY = 0;
  }

-  public get linkMatchers(): LinkMatcher[] { return this._linkMatchers; }
+  public get linkMatchers(): ILinkMatcher[] { return this._linkMatchers; }
  public linkifyRows(): void { super.linkifyRows(0, this._terminal.buffer.lines.length - 1); }
 }

 class TestMouseZoneManager implements IMouseZoneManager {
+  dispose(): void {
+  }
  public clears: number = 0;
  public zones: IMouseZone[] = [];
  add(zone: IMouseZone): void {
@@ -33,23 +35,22 @@ class TestMouseZoneManager implements IMouseZoneManager {
 }

 describe('Linkifier', () => {
-  let terminal: IBufferAccessor & IElementAccessor;
+  let terminal: ITerminal;
  let linkifier: TestLinkifier;
  let mouseZoneManager: TestMouseZoneManager;

  beforeEach(() => {
-    terminal = {
-      buffer: new MockBuffer(),
-      element: <HTMLElement>{}
-    };
-    terminal.buffer.lines = new CircularList<LineData>(20);
+    terminal = new MockTerminal();
+    terminal.cols = 100;
+    terminal.buffer = new MockBuffer();
+    (<MockBuffer>terminal.buffer).setLines(new CircularList<IBufferLine>(20));
    terminal.buffer.ydisp = 0;
    linkifier = new TestLinkifier(terminal);
    mouseZoneManager = new TestMouseZoneManager();
  });

-  function stringToRow(text: string): LineData {
-    let result: LineData = [];
+  function stringToRow(text: string): IBufferLine {
+    const result = new BufferLine();
    for (let i = 0; i < text.length; i++) {
      result.push([0, text.charAt(i), 1, text.charCodeAt(i)]);
    }
@@ -60,17 +61,6 @@ describe('Linkifier', () => {
    terminal.buffer.lines.push(stringToRow(text));
  }

-  function assertLinkifiesEntireRow(uri: string, done: MochaDone): void {
-    addRow(uri);
-    linkifier.linkifyRows();
-    setTimeout(() => {
-      assert.equal(mouseZoneManager.zones[0].x1, 1);
-      assert.equal(mouseZoneManager.zones[0].x2, uri.length + 1);
-      assert.equal(mouseZoneManager.zones[0].y, terminal.buffer.lines.length);
-      done();
-    }, 0);
-  }
-
  function assertLinkifiesRow(rowText: string, linkMatcherRegex: RegExp, links: {x: number, length: number}[], done: MochaDone): void {
    addRow(rowText);
    linkifier.registerLinkMatcher(linkMatcherRegex, () => {});
@@ -81,7 +71,25 @@ describe('Linkifier', () => {
      links.forEach((l, i) => {
        assert.equal(mouseZoneManager.zones[i].x1, l.x + 1);
        assert.equal(mouseZoneManager.zones[i].x2, l.x + l.length + 1);
-        assert.equal(mouseZoneManager.zones[i].y, terminal.buffer.lines.length);
+        assert.equal(mouseZoneManager.zones[i].y1, terminal.buffer.lines.length);
+        assert.equal(mouseZoneManager.zones[i].y2, terminal.buffer.lines.length);
+      });
+      done();
+    }, 0);
+  }
+
+  function assertLinkifiesMultiLineLink(rowText: string, linkMatcherRegex: RegExp, links: {x1: number, y1: number, x2: number, y2: number}[], done: MochaDone): void {
+    addRow(rowText);
+    linkifier.registerLinkMatcher(linkMatcherRegex, () => {});
+    linkifier.linkifyRows();
+    // Allow linkify to happen
+    setTimeout(() => {
+      assert.equal(mouseZoneManager.zones.length, links.length);
+      links.forEach((l, i) => {
+        assert.equal(mouseZoneManager.zones[i].x1, l.x1 + 1);
+        assert.equal(mouseZoneManager.zones[i].x2, l.x2 + 1);
+        assert.equal(mouseZoneManager.zones[i].y1, l.y1 + 1);
+        assert.equal(mouseZoneManager.zones[i].y2, l.y2 + 1);
      });
      done();
    }, 0);
@@ -102,12 +110,6 @@ describe('Linkifier', () => {
      linkifier.attachToDom(mouseZoneManager);
    });

-    describe('http links', () => {
-      it('should allow ~ character in URI path', (done) => {
-        assertLinkifiesEntireRow('http://foo.com/a~b#c~d?e~f', done);
-      });
-    });
-
    describe('link matcher', () => {
      it('should match a single link', done => {
        assertLinkifiesRow('foo', /foo/, [{x: 0, length: 3}], done);
@@ -136,6 +138,24 @@ describe('Linkifier', () => {
        // character (U+1F537) which caused the path to be duplicated. See #642.
        assertLinkifiesRow('echo \'🔷foo\'', /foo/, [{x: 8, length: 3}], done);
      });
+      describe('multi-line links', () => {
+        it('should match links that start on line 1/2 of a wrapped line and end on the last character of line 1/2', done => {
+          terminal.cols = 4;
+          assertLinkifiesMultiLineLink('12345', /1234/, [{x1: 0, x2: 4, y1: 0, y2: 0}], done);
+        });
+        it('should match links that start on line 1/2 of a wrapped line and wrap to line 2/2', done => {
+          terminal.cols = 4;
+          assertLinkifiesMultiLineLink('12345', /12345/, [{x1: 0, x2: 1, y1: 0, y2: 1}], done);
+        });
+        it('should match links that start and end on line 2/2 of a wrapped line', done => {
+          terminal.cols = 4;
+          assertLinkifiesMultiLineLink('12345678', /5678/, [{x1: 0, x2: 4, y1: 1, y2: 1}], done);
+        });
+        it('should match links that start on line 2/3 of a wrapped line and wrap to line 3/3', done => {
+          terminal.cols = 4;
+          assertLinkifiesMultiLineLink('123456789', /56789/, [{x1: 0, x2: 1, y1: 1, y2: 2}], done);
+        });
+      });
    });

    describe('validationCallback', () => {
@@ -148,7 +168,8 @@ describe('Linkifier', () => {
            assert.equal(mouseZoneManager.zones.length, 1);
            assert.equal(mouseZoneManager.zones[0].x1, 1);
            assert.equal(mouseZoneManager.zones[0].x2, 5);
-            assert.equal(mouseZoneManager.zones[0].y, 1);
+            assert.equal(mouseZoneManager.zones[0].y1, 1);
+            assert.equal(mouseZoneManager.zones[0].y2, 1);
            // Fires done()
            mouseZoneManager.zones[0].clickCallback(<any>{});
          }
@@ -201,19 +222,19 @@ describe('Linkifier', () => {
      it('should order the list from highest priority to lowest #1', () => {
        const aId = linkifier.registerLinkMatcher(/a/, () => {}, { priority: 1 });
        const bId = linkifier.registerLinkMatcher(/b/, () => {}, { priority: -1 });
-        assert.deepEqual(linkifier.linkMatchers.map(lm => lm.id), [aId, 0, bId]);
+        assert.deepEqual(linkifier.linkMatchers.map(lm => lm.id), [aId, bId]);
      });

      it('should order the list from highest priority to lowest #2', () => {
        const aId = linkifier.registerLinkMatcher(/a/, () => {}, { priority: -1 });
        const bId = linkifier.registerLinkMatcher(/b/, () => {}, { priority: 1 });
-        assert.deepEqual(linkifier.linkMatchers.map(lm => lm.id), [bId, 0, aId]);
+        assert.deepEqual(linkifier.linkMatchers.map(lm => lm.id), [bId, aId]);
      });

      it('should order items of equal priority in the order they are added', () => {
        const aId = linkifier.registerLinkMatcher(/a/, () => {}, { priority: 0 });
        const bId = linkifier.registerLinkMatcher(/b/, () => {}, { priority: 0 });
-        assert.deepEqual(linkifier.linkMatchers.map(lm => lm.id), [0, aId, bId]);
+        assert.deepEqual(linkifier.linkMatchers.map(lm => lm.id), [aId, bId]);
      });
    });
  });
@@ -3,35 +3,11 @@
 * @license MIT
 */

-import { ILinkMatcherOptions, ITerminal, IBufferAccessor, ILinkifier, IElementAccessor } from './Interfaces';
-import { LinkMatcher, LinkMatcherHandler, LinkMatcherValidationCallback, LineData, LinkHoverEvent, LinkHoverEventTypes } from './Types';
-import { IMouseZoneManager } from './input/Interfaces';
-import { MouseZone } from './input/MouseZoneManager';
+import { IMouseZoneManager } from './ui/Types';
+import { ILinkHoverEvent, ILinkMatcher, LinkMatcherHandler, LinkHoverEventTypes, ILinkMatcherOptions, ILinkifier, ITerminal, IBufferLine } from './Types';
+import { MouseZone } from './ui/MouseZoneManager';
 import { EventEmitter } from './EventEmitter';
-
-const protocolClause = '(https?:\\/\\/)';
-const domainCharacterSet = '[\\da-z\\.-]+';
-const negatedDomainCharacterSet = '[^\\da-z\\.-]+';
-const domainBodyClause = '(' + domainCharacterSet + ')';
-const tldClause = '([a-z\\.]{2,6})';
-const ipClause = '((\\d{1,3}\\.){3}\\d{1,3})';
-const localHostClause = '(localhost)';
-const portClause = '(:\\d{1,5})';
-const hostClause = '((' + domainBodyClause + '\\.' + tldClause + ')|' + ipClause + '|' + localHostClause + ')' + portClause + '?';
-const pathClause = '(\\/[\\/\\w\\.\\-%~]*)*';
-const queryStringHashFragmentCharacterSet = '[0-9\\w\\[\\]\\(\\)\\/\\?\\!#@$%&\'*+,:;~\\=\\.\\-]*';
-const queryStringClause = '(\\?' + queryStringHashFragmentCharacterSet + ')?';
-const hashFragmentClause = '(#' + queryStringHashFragmentCharacterSet + ')?';
-const negatedPathCharacterSet = '[^\\/\\w\\.\\-%]+';
-const bodyClause = hostClause + pathClause + queryStringClause + hashFragmentClause;
-const start = '(?:^|' + negatedDomainCharacterSet + ')(';
-const end = ')($|' + negatedPathCharacterSet + ')';
-const strictUrlRegex = new RegExp(start + protocolClause + bodyClause + end);
-
-/**
- * The ID of the built in http(s) link matcher.
- */
-const HYPERTEXT_LINK_MATCHER_ID = 0;
+import { CHAR_DATA_ATTR_INDEX } from './Buffer';

 /**
 * The Linkifier applies links to rows shortly after they have been refreshed.
@@ -42,24 +18,23 @@ export class Linkifier extends EventEmitter implements ILinkifier {
   * the costly operation of searching every row multiple times, potentially a
   * huge amount of times.
   */
-  protected static TIME_BEFORE_LINKIFY = 200;
+  protected static readonly TIME_BEFORE_LINKIFY = 200;

-  protected _linkMatchers: LinkMatcher[] = [];
+  protected _linkMatchers: ILinkMatcher[] = [];

  private _mouseZoneManager: IMouseZoneManager;
  private _rowsTimeoutId: number;
-  private _nextLinkMatcherId = HYPERTEXT_LINK_MATCHER_ID;
-  private _rowsToLinkify: {start: number, end: number};
+  private _nextLinkMatcherId = 0;
+  private _rowsToLinkify: { start: number, end: number };

  constructor(
-    protected _terminal: IBufferAccessor & IElementAccessor
+    protected _terminal: ITerminal
  ) {
    super();
    this._rowsToLinkify = {
      start: null,
      end: null
    };
-    this.registerLinkMatcher(strictUrlRegex, null, { matchIndex: 1 });
  }

  /**
@@ -82,12 +57,12 @@ export class Linkifier extends EventEmitter implements ILinkifier {
    }

    // Increase range to linkify
-    if (!this._rowsToLinkify.start) {
+    if (this._rowsToLinkify.start === null) {
      this._rowsToLinkify.start = start;
      this._rowsToLinkify.end = end;
    } else {
-      this._rowsToLinkify.start = this._rowsToLinkify.start < start ? this._rowsToLinkify.start : start;
-      this._rowsToLinkify.end = this._rowsToLinkify.end > end ? this._rowsToLinkify.end : end;
+      this._rowsToLinkify.start = Math.min(this._rowsToLinkify.start, start);
+      this._rowsToLinkify.end = Math.max(this._rowsToLinkify.end, end);
    }

    // Clear out any existing links on this row range
@@ -112,23 +87,6 @@ export class Linkifier extends EventEmitter implements ILinkifier {
    this._rowsToLinkify.end = null;
  }

-  /**
-   * Attaches a handler for hypertext links, overriding default <a> behavior for
-   * tandard http(s) links.
-   * @param handler The handler to use, this can be cleared with null.
-   */
-  public setHypertextLinkHandler(handler: LinkMatcherHandler): void {
-    this._linkMatchers[HYPERTEXT_LINK_MATCHER_ID].handler = handler;
-  }
-
-  /**
-   * Attaches a validation callback for hypertext links.
-   * @param callback The callback to use, this can be cleared with null.
-   */
-  public setHypertextValidationCallback(callback: LinkMatcherValidationCallback): void {
-    this._linkMatchers[HYPERTEXT_LINK_MATCHER_ID].validationCallback = callback;
-  }
-
  /**
   * Registers a link matcher, allowing custom link patterns to be matched and
   * handled.
@@ -140,10 +98,10 @@ export class Linkifier extends EventEmitter implements ILinkifier {
   * @return The ID of the new matcher, this can be used to deregister.
   */
  public registerLinkMatcher(regex: RegExp, handler: LinkMatcherHandler, options: ILinkMatcherOptions = {}): number {
-    if (this._nextLinkMatcherId !== HYPERTEXT_LINK_MATCHER_ID && !handler) {
+    if (!handler) {
      throw new Error('handler must be defined');
    }
-    const matcher: LinkMatcher = {
+    const matcher: ILinkMatcher = {
      id: this._nextLinkMatcherId++,
      regex,
      handler,
@@ -151,6 +109,7 @@ export class Linkifier extends EventEmitter implements ILinkifier {
      validationCallback: options.validationCallback,
      hoverTooltipCallback: options.tooltipCallback,
      hoverLeaveCallback: options.leaveCallback,
+      willLinkActivate: options.willLinkActivate,
      priority: options.priority || 0
    };
    this._addLinkMatcherToList(matcher);
@@ -163,7 +122,7 @@ export class Linkifier extends EventEmitter implements ILinkifier {
   * considered after older link matchers.
   * @param matcher The link matcher to be added.
   */
-  private _addLinkMatcherToList(matcher: LinkMatcher): void {
+  private _addLinkMatcherToList(matcher: ILinkMatcher): void {
    if (this._linkMatchers.length === 0) {
      this._linkMatchers.push(matcher);
      return;
@@ -185,8 +144,7 @@ export class Linkifier extends EventEmitter implements ILinkifier {
   * @return Whether a link matcher was found and deregistered.
   */
  public deregisterLinkMatcher(matcherId: number): boolean {
-    // ID 0 is the hypertext link matcher which cannot be deregistered
-    for (let i = 1; i < this._linkMatchers.length; i++) {
+    for (let i = 0; i < this._linkMatchers.length; i++) {
      if (this._linkMatchers[i].id === matcherId) {
        this._linkMatchers.splice(i, 1);
        return true;
@@ -200,11 +158,40 @@ export class Linkifier extends EventEmitter implements ILinkifier {
   * @param rowIndex The index of the row to linkify.
   */
  private _linkifyRow(rowIndex: number): void {
-    const absoluteRowIndex = this._terminal.buffer.ydisp + rowIndex;
+    // Ensure the row exists
+    let absoluteRowIndex = this._terminal.buffer.ydisp + rowIndex;
    if (absoluteRowIndex >= this._terminal.buffer.lines.length) {
      return;
    }
-    const text = this._terminal.buffer.translateBufferLineToString(absoluteRowIndex, false);
+
+    if (this._terminal.buffer.lines.get(absoluteRowIndex).isWrapped) {
+      // Only attempt to linkify rows that start in the viewport
+      if (rowIndex !== 0) {
+        return;
+      }
+      // If the first row is wrapped, backtrack to find the origin row and linkify that
+      let line: IBufferLine;
+
+      do {
+        rowIndex--;
+        absoluteRowIndex--;
+        line = this._terminal.buffer.lines.get(absoluteRowIndex);
+
+        if (!line) {
+          break;
+        }
+
+      } while (line.isWrapped);
+    }
+
+    // Construct full unwrapped line text
+    let text = this._terminal.buffer.translateBufferLineToString(absoluteRowIndex, false);
+    let currentIndex = absoluteRowIndex + 1;
+    while (currentIndex < this._terminal.buffer.lines.length &&
+      this._terminal.buffer.lines.get(currentIndex).isWrapped) {
+      text += this._terminal.buffer.translateBufferLineToString(currentIndex++, false);
+    }
+
    for (let i = 0; i < this._linkMatchers.length; i++) {
      this._doLinkifyRow(rowIndex, text, this._linkMatchers[i]);
    }
@@ -219,21 +206,23 @@ export class Linkifier extends EventEmitter implements ILinkifier {
   * @param offset The how much of the row has already been linkified.
   * @return The link element(s) that were added.
   */
-  private _doLinkifyRow(rowIndex: number, text: string, matcher: LinkMatcher, offset: number = 0): void {
-    // Iterate over nodes as we want to consider text nodes
-    let result = [];
-    const isHttpLinkMatcher = matcher.id === HYPERTEXT_LINK_MATCHER_ID;
-
+  private _doLinkifyRow(rowIndex: number, text: string, matcher: ILinkMatcher, offset: number = 0): void {
    // Find the first match
-    let match = text.match(matcher.regex);
+    const match = text.match(matcher.regex);
    if (!match || match.length === 0) {
      return;
    }
-    let uri = match[typeof matcher.matchIndex !== 'number' ? 0 : matcher.matchIndex];
+    const uri = match[typeof matcher.matchIndex !== 'number' ? 0 : matcher.matchIndex];

    // Get index, match.index is for the outer match which includes negated chars
    const index = text.indexOf(uri);

+    // Get cell color
+    const line = this._terminal.buffer.lines.get(this._terminal.buffer.ydisp + rowIndex);
+    const char = line.get(index);
+    const attr: number = char[CHAR_DATA_ATTR_INDEX];
+    const fg = (attr >> 9) & 0x1ff;
+
    // Ensure the link is valid before registering
    if (matcher.validationCallback) {
      matcher.validationCallback(uri, isValid => {
@@ -242,11 +231,11 @@ export class Linkifier extends EventEmitter implements ILinkifier {
          return;
        }
        if (isValid) {
-          this._addLink(offset + index, rowIndex, uri, matcher);
+          this._addLink(offset + index, rowIndex, uri, matcher, fg);
        }
      });
    } else {
-      this._addLink(offset + index, rowIndex, uri, matcher);
+      this._addLink(offset + index, rowIndex, uri, matcher, fg);
    }

    // Recursively check for links in the rest of the text
@@ -263,12 +252,23 @@ export class Linkifier extends EventEmitter implements ILinkifier {
   * @param y The row the link is on.
   * @param uri The URI of the link.
   * @param matcher The link matcher for the link.
+   * @param fg The link color for hover event.
   */
-  private _addLink(x: number, y: number, uri: string, matcher: LinkMatcher): void {
+  private _addLink(x: number, y: number, uri: string, matcher: ILinkMatcher, fg: number): void {
+    const x1 = x % this._terminal.cols;
+    const y1 = y + Math.floor(x / this._terminal.cols);
+    let x2 = (x1 + uri.length) % this._terminal.cols;
+    let y2 = y1 + Math.floor((x1 + uri.length) / this._terminal.cols);
+    if (x2 === 0) {
+      x2 = this._terminal.cols;
+      y2--;
+    }
+
    this._mouseZoneManager.add(new MouseZone(
-      x + 1,
-      x + 1 + uri.length,
-      y + 1,
+      x1 + 1,
+      y1 + 1,
+      x2 + 1,
+      y2 + 1,
      e => {
        if (matcher.handler) {
          return matcher.handler(e, uri);
@@ -276,22 +276,32 @@ export class Linkifier extends EventEmitter implements ILinkifier {
        window.open(uri, '_blank');
      },
      e => {
-        this.emit(LinkHoverEventTypes.HOVER, <LinkHoverEvent>{ x, y, length: uri.length});
-        this._terminal.element.style.cursor = 'pointer';
+        this.emit(LinkHoverEventTypes.HOVER, this._createLinkHoverEvent(x1, y1, x2, y2, fg));
+        this._terminal.element.classList.add('xterm-cursor-pointer');
      },
      e => {
-        this.emit(LinkHoverEventTypes.TOOLTIP, <LinkHoverEvent>{ x, y, length: uri.length});
+        this.emit(LinkHoverEventTypes.TOOLTIP, this._createLinkHoverEvent(x1, y1, x2, y2, fg));
        if (matcher.hoverTooltipCallback) {
          matcher.hoverTooltipCallback(e, uri);
        }
      },
      () => {
-        this.emit(LinkHoverEventTypes.LEAVE, <LinkHoverEvent>{ x, y, length: uri.length});
-        this._terminal.element.style.cursor = '';
+        this.emit(LinkHoverEventTypes.LEAVE, this._createLinkHoverEvent(x1, y1, x2, y2, fg));
+        this._terminal.element.classList.remove('xterm-cursor-pointer');
        if (matcher.hoverLeaveCallback) {
          matcher.hoverLeaveCallback();
        }
+      },
+      e => {
+        if (matcher.willLinkActivate) {
+          return matcher.willLinkActivate(e, uri);
+        }
+        return true;
      }
    ));
  }
+
+  private _createLinkHoverEvent(x1: number, y1: number, x2: number, y2: number, fg: number): ILinkHoverEvent {
+    return { x1, y1, x2, y2, cols: this._terminal.cols, fg };
+  }
 }
@@ -1,666 +0,0 @@
-/**
- * Copyright (c) 2014 The xterm.js authors. All rights reserved.
- * Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
- * @license MIT
- */
-
-import { C0 } from './EscapeSequences';
-import { IInputHandler } from './Interfaces';
-import { CHARSETS, DEFAULT_CHARSET } from './Charsets';
-
-const normalStateHandler: {[key: string]: (parser: Parser, handler: IInputHandler) => void} = {};
-normalStateHandler[C0.BEL] = (parser, handler) => handler.bell();
-normalStateHandler[C0.LF] = (parser, handler) => handler.lineFeed();
-normalStateHandler[C0.VT] = normalStateHandler[C0.LF];
-normalStateHandler[C0.FF] = normalStateHandler[C0.LF];
-normalStateHandler[C0.CR] = (parser, handler) => handler.carriageReturn();
-normalStateHandler[C0.BS] = (parser, handler) => handler.backspace();
-normalStateHandler[C0.HT] = (parser, handler) => handler.tab();
-normalStateHandler[C0.SO] = (parser, handler) => handler.shiftOut();
-normalStateHandler[C0.SI] = (parser, handler) => handler.shiftIn();
-normalStateHandler[C0.ESC] = (parser, handler) => parser.setState(ParserState.ESCAPED);
-
-// TODO: Remove terminal when parser owns params and currentParam
-const escapedStateHandler: {[key: string]: (parser: Parser, terminal: any) => void} = {};
-escapedStateHandler['['] = (parser, terminal) => {
-  // ESC [ Control Sequence Introducer (CSI  is 0x9b)
-  terminal.params = [];
-  terminal.currentParam = 0;
-  parser.setState(ParserState.CSI_PARAM);
-};
-escapedStateHandler[']'] = (parser, terminal) => {
-  // ESC ] Operating System Command (OSC is 0x9d)
-  terminal.params = [];
-  terminal.currentParam = 0;
-  parser.setState(ParserState.OSC);
-};
-escapedStateHandler['P'] = (parser, terminal) => {
-  // ESC P Device Control String (DCS is 0x90)
-  terminal.params = [];
-  terminal.currentParam = 0;
-  parser.setState(ParserState.DCS);
-};
-escapedStateHandler['_'] = (parser, terminal) => {
-  // ESC _ Application Program Command ( APC is 0x9f).
-  parser.setState(ParserState.IGNORE);
-};
-escapedStateHandler['^'] = (parser, terminal) => {
-  // ESC ^ Privacy Message ( PM is 0x9e).
-  parser.setState(ParserState.IGNORE);
-};
-escapedStateHandler['c'] = (parser, terminal) => {
-  // ESC c Full Reset (RIS).
-  terminal.reset();
-};
-escapedStateHandler['E'] = (parser, terminal) => {
-  // ESC E Next Line ( NEL is 0x85).
-  terminal.buffer.x = 0;
-  terminal.index();
-  parser.setState(ParserState.NORMAL);
-};
-escapedStateHandler['D'] = (parser, terminal) => {
-  // ESC D Index ( IND is 0x84).
-  terminal.index();
-  parser.setState(ParserState.NORMAL);
-};
-escapedStateHandler['M'] = (parser, terminal) => {
-  // ESC M Reverse Index ( RI is 0x8d).
-  terminal.reverseIndex();
-  parser.setState(ParserState.NORMAL);
-};
-escapedStateHandler['%'] = (parser, terminal) => {
-  // ESC % Select default/utf-8 character set.
-  // @ = default, G = utf-8
-  terminal.setgLevel(0);
-  terminal.setgCharset(0, DEFAULT_CHARSET); // US (default)
-  parser.setState(ParserState.NORMAL);
-  parser.skipNextChar();
-};
-escapedStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);
-
-const csiParamStateHandler: {[key: string]: (parser: Parser) => void} = {};
-csiParamStateHandler['?'] = (parser) => parser.setPrefix('?');
-csiParamStateHandler['>'] = (parser) => parser.setPrefix('>');
-csiParamStateHandler['!'] = (parser) => parser.setPrefix('!');
-csiParamStateHandler['0'] = (parser) => parser.setParam(parser.getParam() * 10);
-csiParamStateHandler['1'] = (parser) => parser.setParam(parser.getParam() * 10 + 1);
-csiParamStateHandler['2'] = (parser) => parser.setParam(parser.getParam() * 10 + 2);
-csiParamStateHandler['3'] = (parser) => parser.setParam(parser.getParam() * 10 + 3);
-csiParamStateHandler['4'] = (parser) => parser.setParam(parser.getParam() * 10 + 4);
-csiParamStateHandler['5'] = (parser) => parser.setParam(parser.getParam() * 10 + 5);
-csiParamStateHandler['6'] = (parser) => parser.setParam(parser.getParam() * 10 + 6);
-csiParamStateHandler['7'] = (parser) => parser.setParam(parser.getParam() * 10 + 7);
-csiParamStateHandler['8'] = (parser) => parser.setParam(parser.getParam() * 10 + 8);
-csiParamStateHandler['9'] = (parser) => parser.setParam(parser.getParam() * 10 + 9);
-csiParamStateHandler['$'] = (parser) => parser.setPostfix('$');
-csiParamStateHandler['"'] = (parser) => parser.setPostfix('"');
-csiParamStateHandler[' '] = (parser) => parser.setPostfix(' ');
-csiParamStateHandler['\''] = (parser) => parser.setPostfix('\'');
-csiParamStateHandler[';'] = (parser) => parser.finalizeParam();
-csiParamStateHandler[C0.CAN] = (parser) => parser.setState(ParserState.NORMAL);
-
-const csiStateHandler: {[key: string]: (handler: IInputHandler, params: number[], prefix: string, postfix: string, parser: Parser) => void} = {};
-csiStateHandler['@'] = (handler, params, prefix) => handler.insertChars(params);
-csiStateHandler['A'] = (handler, params, prefix) => handler.cursorUp(params);
-csiStateHandler['B'] = (handler, params, prefix) => handler.cursorDown(params);
-csiStateHandler['C'] = (handler, params, prefix) => handler.cursorForward(params);
-csiStateHandler['D'] = (handler, params, prefix) => handler.cursorBackward(params);
-csiStateHandler['E'] = (handler, params, prefix) => handler.cursorNextLine(params);
-csiStateHandler['F'] = (handler, params, prefix) => handler.cursorPrecedingLine(params);
-csiStateHandler['G'] = (handler, params, prefix) => handler.cursorCharAbsolute(params);
-csiStateHandler['H'] = (handler, params, prefix) => handler.cursorPosition(params);
-csiStateHandler['I'] = (handler, params, prefix) => handler.cursorForwardTab(params);
-csiStateHandler['J'] = (handler, params, prefix) => handler.eraseInDisplay(params);
-csiStateHandler['K'] = (handler, params, prefix) => handler.eraseInLine(params);
-csiStateHandler['L'] = (handler, params, prefix) => handler.insertLines(params);
-csiStateHandler['M'] = (handler, params, prefix) => handler.deleteLines(params);
-csiStateHandler['P'] = (handler, params, prefix) => handler.deleteChars(params);
-csiStateHandler['S'] = (handler, params, prefix) => handler.scrollUp(params);
-csiStateHandler['T'] = (handler, params, prefix) => {
-  if (params.length < 2 && !prefix) {
-    handler.scrollDown(params);
-  }
-};
-csiStateHandler['X'] = (handler, params, prefix) => handler.eraseChars(params);
-csiStateHandler['Z'] = (handler, params, prefix) => handler.cursorBackwardTab(params);
-csiStateHandler['`'] = (handler, params, prefix) => handler.charPosAbsolute(params);
-csiStateHandler['a'] = (handler, params, prefix) => handler.HPositionRelative(params);
-csiStateHandler['b'] = (handler, params, prefix) => handler.repeatPrecedingCharacter(params);
-csiStateHandler['c'] = (handler, params, prefix) => handler.sendDeviceAttributes(params);
-csiStateHandler['d'] = (handler, params, prefix) => handler.linePosAbsolute(params);
-csiStateHandler['e'] = (handler, params, prefix) => handler.VPositionRelative(params);
-csiStateHandler['f'] = (handler, params, prefix) => handler.HVPosition(params);
-csiStateHandler['g'] = (handler, params, prefix) => handler.tabClear(params);
-csiStateHandler['h'] = (handler, params, prefix) => handler.setMode(params);
-csiStateHandler['l'] = (handler, params, prefix) => handler.resetMode(params);
-csiStateHandler['m'] = (handler, params, prefix) => handler.charAttributes(params);
-csiStateHandler['n'] = (handler, params, prefix) => handler.deviceStatus(params);
-csiStateHandler['p'] = (handler, params, prefix) => {
-  switch (prefix) {
-    case '!': handler.softReset(params); break;
-  }
-};
-csiStateHandler['q'] = (handler, params, prefix, postfix) => {
-  if (postfix === ' ') {
-    handler.setCursorStyle(params);
-  }
-};
-csiStateHandler['r'] = (handler, params) => handler.setScrollRegion(params);
-csiStateHandler['s'] = (handler, params) => handler.saveCursor(params);
-csiStateHandler['u'] = (handler, params) => handler.restoreCursor(params);
-csiStateHandler[C0.CAN] = (handler, params, prefix, postfix, parser) => parser.setState(ParserState.NORMAL);
-
-export enum ParserState {
-  NORMAL = 0,
-  ESCAPED = 1,
-  CSI_PARAM = 2,
-  CSI = 3,
-  OSC = 4,
-  CHARSET = 5,
-  DCS = 6,
-  IGNORE = 7
-}
-
-/**
- * The terminal's parser, all input into the terminal goes through the parser
- * which parses and defers the actual input handling the the IInputHandler
- * specified in the constructor.
- */
-export class Parser {
-  private _state: ParserState;
-  private _position: number;
-
-  // TODO: Remove terminal when handler can do everything
-  constructor(
-    private _inputHandler: IInputHandler,
-    private _terminal: any
-  ) {
-    this._state = ParserState.NORMAL;
-  }
-
-  /**
-   * Parse and handle data.
-   *
-   * @param data The data to parse.
-   */
-  public parse(data: string): ParserState {
-    const l = data.length;
-    let j;
-    let cs;
-    let ch;
-    let code;
-    let low;
-
-    const cursorStartX = this._terminal.buffer.x;
-    const cursorStartY = this._terminal.buffer.y;
-
-    if (this._terminal.debug) {
-      this._terminal.log('data: ' + data);
-    }
-
-    this._position = 0;
-    // apply leftover surrogate high from last write
-    if (this._terminal.surrogate_high) {
-      data = this._terminal.surrogate_high + data;
-      this._terminal.surrogate_high = '';
-    }
-
-    for (; this._position < l; this._position++) {
-      ch = data[this._position];
-
-      // FIXME: higher chars than 0xa0 are not allowed in escape sequences
-      //        --> maybe move to default
-      code = data.charCodeAt(this._position);
-      if (0xD800 <= code && code <= 0xDBFF) {
-        // we got a surrogate high
-        // get surrogate low (next 2 bytes)
-        low = data.charCodeAt(this._position + 1);
-        if (isNaN(low)) {
-          // end of data stream, save surrogate high
-          this._terminal.surrogate_high = ch;
-          continue;
-        }
-        code = ((code - 0xD800) * 0x400) + (low - 0xDC00) + 0x10000;
-        ch += data.charAt(this._position + 1);
-      }
-      // surrogate low - already handled above
-      if (0xDC00 <= code && code <= 0xDFFF)
-        continue;
-
-      switch (this._state) {
-        case ParserState.NORMAL:
-          if (ch in normalStateHandler) {
-            normalStateHandler[ch](this, this._inputHandler);
-          } else {
-            this._inputHandler.addChar(ch, code);
-          }
-          break;
-        case ParserState.ESCAPED:
-          if (ch in escapedStateHandler) {
-            escapedStateHandler[ch](this, this._terminal);
-            // Skip switch as it was just handled
-            break;
-          }
-          switch (ch) {
-
-            // ESC (,),*,+,-,. Designate G0-G2 Character Set.
-            case '(': // <-- this seems to get all the attention
-            case ')':
-            case '*':
-            case '+':
-            case '-':
-            case '.':
-              switch (ch) {
-                case '(':
-                  this._terminal.gcharset = 0;
-                  break;
-                case ')':
-                  this._terminal.gcharset = 1;
-                  break;
-                case '*':
-                  this._terminal.gcharset = 2;
-                  break;
-                case '+':
-                  this._terminal.gcharset = 3;
-                  break;
-                case '-':
-                  this._terminal.gcharset = 1;
-                  break;
-                case '.':
-                  this._terminal.gcharset = 2;
-                  break;
-              }
-              this._state = ParserState.CHARSET;
-              break;
-
-            // Designate G3 Character Set (VT300).
-            // A = ISO Latin-1 Supplemental.
-            // Not implemented.
-            case '/':
-              this._terminal.gcharset = 3;
-              this._state = ParserState.CHARSET;
-              this._position--;
-              break;
-
-            // ESC N
-            // Single Shift Select of G2 Character Set
-            // ( SS2 is 0x8e). This affects next character only.
-            case 'N':
-              break;
-            // ESC O
-            // Single Shift Select of G3 Character Set
-            // ( SS3 is 0x8f). This affects next character only.
-            case 'O':
-              break;
-            // ESC n
-            // Invoke the G2 Character Set as GL (LS2).
-            case 'n':
-              this._terminal.setgLevel(2);
-              break;
-            // ESC o
-            // Invoke the G3 Character Set as GL (LS3).
-            case 'o':
-              this._terminal.setgLevel(3);
-              break;
-            // ESC |
-            // Invoke the G3 Character Set as GR (LS3R).
-            case '|':
-              this._terminal.setgLevel(3);
-              break;
-            // ESC }
-            // Invoke the G2 Character Set as GR (LS2R).
-            case '}':
-              this._terminal.setgLevel(2);
-              break;
-            // ESC ~
-            // Invoke the G1 Character Set as GR (LS1R).
-            case '~':
-              this._terminal.setgLevel(1);
-              break;
-
-            // ESC 7 Save Cursor (DECSC).
-            case '7':
-              this._inputHandler.saveCursor();
-              this._state = ParserState.NORMAL;
-              break;
-
-            // ESC 8 Restore Cursor (DECRC).
-            case '8':
-              this._inputHandler.restoreCursor();
-              this._state = ParserState.NORMAL;
-              break;
-
-            // ESC # 3 DEC line height/width
-            case '#':
-              this._state = ParserState.NORMAL;
-              this._position++;
-              break;
-
-            // ESC H Tab Set (HTS is 0x88).
-            case 'H':
-              this._terminal.tabSet();
-              this._state = ParserState.NORMAL;
-              break;
-
-            // ESC = Application Keypad (DECKPAM).
-            case '=':
-              this._terminal.log('Serial port requested application keypad.');
-              this._terminal.applicationKeypad = true;
-              if (this._terminal.viewport) {
-                this._terminal.viewport.syncScrollArea();
-              }
-              this._state = ParserState.NORMAL;
-              break;
-
-            // ESC > Normal Keypad (DECKPNM).
-            case '>':
-              this._terminal.log('Switching back to normal keypad.');
-              this._terminal.applicationKeypad = false;
-              if (this._terminal.viewport) {
-                this._terminal.viewport.syncScrollArea();
-              }
-              this._state = ParserState.NORMAL;
-              break;
-
-            default:
-              this._state = ParserState.NORMAL;
-              this._terminal.error('Unknown ESC control: %s.', ch);
-              break;
-          }
-          break;
-
-        case ParserState.CHARSET:
-          if (ch in CHARSETS) {
-            cs = CHARSETS[ch];
-            if (ch === '/') { // ISOLatin is actually /A
-              this.skipNextChar();
-            }
-          } else {
-            cs = DEFAULT_CHARSET;
-          }
-          this._terminal.setgCharset(this._terminal.gcharset, cs);
-          this._terminal.gcharset = null;
-          this._state = ParserState.NORMAL;
-          break;
-
-        case ParserState.OSC:
-          // OSC Ps ; Pt ST
-          // OSC Ps ; Pt BEL
-          //   Set Text Parameters.
-          if (ch === C0.ESC || ch === C0.BEL) {
-            if (ch === C0.ESC) this._position++;
-
-            this._terminal.params.push(this._terminal.currentParam);
-
-            switch (this._terminal.params[0]) {
-              case 0:
-              case 1:
-              case 2:
-                if (this._terminal.params[1]) {
-                  this._terminal.title = this._terminal.params[1];
-                  this._terminal.handleTitle(this._terminal.title);
-                }
-                break;
-              case 3:
-                // set X property
-                break;
-              case 4:
-              case 5:
-                // change dynamic colors
-                break;
-              case 10:
-              case 11:
-              case 12:
-              case 13:
-              case 14:
-              case 15:
-              case 16:
-              case 17:
-              case 18:
-              case 19:
-                // change dynamic ui colors
-                break;
-              case 46:
-                // change log file
-                break;
-              case 50:
-                // dynamic font
-                break;
-              case 51:
-                // emacs shell
-                break;
-              case 52:
-                // manipulate selection data
-                break;
-              case 104:
-              case 105:
-              case 110:
-              case 111:
-              case 112:
-              case 113:
-              case 114:
-              case 115:
-              case 116:
-              case 117:
-              case 118:
-                // reset colors
-                break;
-            }
-
-            this._terminal.params = [];
-            this._terminal.currentParam = 0;
-            this._state = ParserState.NORMAL;
-          } else {
-            if (!this._terminal.params.length) {
-              if (ch >= '0' && ch <= '9') {
-                this._terminal.currentParam =
-                  this._terminal.currentParam * 10 + ch.charCodeAt(0) - 48;
-              } else if (ch === ';') {
-                this._terminal.params.push(this._terminal.currentParam);
-                this._terminal.currentParam = '';
-              }
-            } else {
-              this._terminal.currentParam += ch;
-            }
-          }
-          break;
-
-        case ParserState.CSI_PARAM:
-          if (ch in csiParamStateHandler) {
-            csiParamStateHandler[ch](this);
-            break;
-          }
-          this.finalizeParam();
-          // Fall through the CSI as this character should be the CSI code.
-          this._state = ParserState.CSI;
-
-        case ParserState.CSI:
-          if (ch in csiStateHandler) {
-            if (this._terminal.debug) {
-              this._terminal.log(`CSI ${this._terminal.prefix ? this._terminal.prefix : ''} ${this._terminal.params ? this._terminal.params.join(';') : ''} ${this._terminal.postfix ? this._terminal.postfix : ''} ${ch}`);
-            }
-            csiStateHandler[ch](this._inputHandler, this._terminal.params, this._terminal.prefix, this._terminal.postfix, this);
-          } else {
-            this._terminal.error('Unknown CSI code: %s.', ch);
-          }
-
-          this._state = ParserState.NORMAL;
-          this._terminal.prefix = '';
-          this._terminal.postfix = '';
-          break;
-
-        case ParserState.DCS:
-          if (ch === C0.ESC || ch === C0.BEL) {
-            if (ch === C0.ESC) this._position++;
-            let pt;
-            let valid: boolean;
-
-            switch (this._terminal.prefix) {
-              // User-Defined Keys (DECUDK).
-              case '':
-                break;
-
-              // Request Status String (DECRQSS).
-              // test: echo -e '\eP$q"p\e\\'
-              case '$q':
-                pt = this._terminal.currentParam;
-                valid = false;
-
-                switch (pt) {
-                  // DECSCA
-                  case '"q':
-                    pt = '0"q';
-                    break;
-
-                  // DECSCL
-                  case '"p':
-                    pt = '61"p';
-                    break;
-
-                  // DECSTBM
-                  case 'r':
-                    pt = ''
-                      + (this._terminal.buffer.scrollTop + 1)
-                      + ';'
-                      + (this._terminal.buffer.scrollBottom + 1)
-                      + 'r';
-                    break;
-
-                  // SGR
-                  case 'm':
-                    pt = '0m';
-                    break;
-
-                  default:
-                    this._terminal.error('Unknown DCS Pt: %s.', pt);
-                    pt = '';
-                    break;
-                }
-
-                this._terminal.send(C0.ESC + 'P' + +valid + '$r' + pt + C0.ESC + '\\');
-                break;
-
-              // Set Termcap/Terminfo Data (xterm, experimental).
-              case '+p':
-                break;
-
-              // Request Termcap/Terminfo String (xterm, experimental)
-              // Regular xterm does not even respond to this sequence.
-              // This can cause a small glitch in vim.
-              // test: echo -ne '\eP+q6b64\e\\'
-              case '+q':
-                pt = this._terminal.currentParam;
-                valid = false;
-
-                this._terminal.send(C0.ESC + 'P' + +valid + '+r' + pt + C0.ESC + '\\');
-                break;
-
-              default:
-                this._terminal.error('Unknown DCS prefix: %s.', this._terminal.prefix);
-                break;
-            }
-
-            this._terminal.currentParam = 0;
-            this._terminal.prefix = '';
-            this._state = ParserState.NORMAL;
-          } else if (!this._terminal.currentParam) {
-            if (!this._terminal.prefix && ch !== '$' && ch !== '+') {
-              this._terminal.currentParam = ch;
-            } else if (this._terminal.prefix.length === 2) {
-              this._terminal.currentParam = ch;
-            } else {
-              this._terminal.prefix += ch;
-            }
-          } else {
-            this._terminal.currentParam += ch;
-          }
-          break;
-
-        case ParserState.IGNORE:
-          // For PM and APC.
-          if (ch === C0.ESC || ch === C0.BEL) {
-            if (ch === C0.ESC) this._position++;
-            this._state = ParserState.NORMAL;
-          }
-          break;
-      }
-    }
-
-    // Fire the cursormove event if it's moved. This is done inside the parser
-    // as a render cannot happen in the middle of a parsing round.
-    if (this._terminal.buffer.x !== cursorStartX || this._terminal.buffer.y !== cursorStartY) {
-      this._terminal.emit('cursormove');
-    }
-
-    return this._state;
-  }
-
-  /**
-   * Set the parser's current parsing state.
-   *
-   * @param state The new state.
-   */
-  public setState(state: ParserState): void {
-    this._state = state;
-  }
-
-  /**
-   * Sets the parsier's current prefix. CSI codes can have prefixes of '?', '>'
-   * or '!'.
-   *
-   * @param prefix The prefix.
-   */
-  public setPrefix(prefix: string): void {
-    this._terminal.prefix = prefix;
-  }
-
-  /**
-   * Sets the parsier's current prefix. CSI codes can have postfixes of '$',
-   * '"', ' ', '\''.
-   *
-   * @param postfix The postfix.
-   */
-  public setPostfix(postfix: string): void {
-    this._terminal.postfix = postfix;
-  }
-
-  /**
-   * Sets the parser's current parameter.
-   *
-   * @param param the parameter.
-   */
-  public setParam(param: number): void {
-    this._terminal.currentParam = param;
-  }
-
-  /**
-   * Gets the parser's current parameter.
-   */
-  public getParam(): number {
-    return this._terminal.currentParam;
-  }
-
-  /**
-   * Finalizes the parser's current parameter, adding it to the list of
-   * parameters and setting the new current parameter to 0.
-   */
-  public finalizeParam(): void {
-    this._terminal.params.push(this._terminal.currentParam);
-    this._terminal.currentParam = 0;
-  }
-
-  /**
-   * Tell the parser to skip the next character.
-   */
-  public skipNextChar(): void {
-    this._position++;
-  }
-
-  /**
-   * Tell the parser to repeat parsing the current character (for example if it
-   * needs parsing using a different state.
-   */
-  // public repeatChar(): void {
-  //   this._position--;
-  // }
-}
@@ -3,16 +3,14 @@
 * @license MIT
 */

-import jsdom = require('jsdom');
 import { assert } from 'chai';
-import { ITerminal, ICircularList, IBuffer } from './Interfaces';
-import { CharMeasure } from './utils/CharMeasure';
-import { CircularList } from './utils/CircularList';
-import { SelectionManager } from './SelectionManager';
+import { CharMeasure } from './ui/CharMeasure';
+import { SelectionManager, SelectionMode } from './SelectionManager';
 import { SelectionModel } from './SelectionModel';
 import { BufferSet } from './BufferSet';
+import { ITerminal, IBuffer, IBufferLine } from './Types';
 import { MockTerminal } from './utils/TestUtils.test';
-import { LineData, CharData } from './Types';
+import { BufferLine } from './BufferLine';

 class TestMockTerminal extends MockTerminal {
  emit(event: string, data: any): void {}
@@ -21,16 +19,17 @@ class TestMockTerminal extends MockTerminal {
 class TestSelectionManager extends SelectionManager {
  constructor(
    terminal: ITerminal,
-    buffer: IBuffer,
    charMeasure: CharMeasure
  ) {
-    super(terminal, buffer, charMeasure);
+    super(terminal, charMeasure);
  }

  public get model(): SelectionModel { return this._model; }

+  public set selectionMode(mode: SelectionMode) { this._activeSelectionMode = mode; }
+
  public selectLineAt(line: number): void { this._selectLineAt(line); }
-  public selectWordAt(coords: [number, number]): void { this._selectWordAt(coords); }
+  public selectWordAt(coords: [number, number]): void { this._selectWordAt(coords, true); }

  // Disable DOM interaction
  public enable(): void {}
@@ -39,19 +38,11 @@ class TestSelectionManager extends SelectionManager {
 }

 describe('SelectionManager', () => {
-  let dom: jsdom.JSDOM;
-  let window: Window;
-  let document: Document;
-
  let terminal: ITerminal;
  let buffer: IBuffer;
-  let rowContainer: HTMLElement;
  let selectionManager: TestSelectionManager;

  beforeEach(() => {
-    dom = new jsdom.JSDOM('');
-    window = dom.window;
-    document = window.document;
    terminal = new TestMockTerminal();
    terminal.cols = 80;
    terminal.rows = 2;
@@ -59,19 +50,21 @@ describe('SelectionManager', () => {
    terminal.buffers = new BufferSet(terminal);
    terminal.buffer = terminal.buffers.active;
    buffer = terminal.buffer;
-    selectionManager = new TestSelectionManager(terminal, buffer, null);
+    selectionManager = new TestSelectionManager(terminal, null);
  });

-  function stringToRow(text: string): LineData {
-    let result: LineData = [];
+  function stringToRow(text: string): IBufferLine {
+    const result = new BufferLine();
    for (let i = 0; i < text.length; i++) {
      result.push([0, text.charAt(i), 1, text.charCodeAt(i)]);
    }
    return result;
  }

-  function stringArrayToRow(chars: string[]): LineData {
-    return chars.map(c => <CharData>[0, c, 1, c.charCodeAt(0)]);
+  function stringArrayToRow(chars: string[]): IBufferLine {
+    const line = new BufferLine();
+    chars.map(c => line.push([0, c, 1, c.charCodeAt(0)]));
+    return line;
  }

  describe('_selectWordAt', () => {
@@ -107,7 +100,8 @@ describe('SelectionManager', () => {
    });
    it('should expand selection for wide characters', () => {
      // Wide characters use a special format
-      buffer.lines.set(0, [
+      const line = new BufferLine();
+      const data: [number, string, number, number][] = [
        [null, '中', 2, '中'.charCodeAt(0)],
        [null, '', 0, null],
        [null, '文', 2, '文'.charCodeAt(0)],
@@ -123,7 +117,9 @@ describe('SelectionManager', () => {
        [null, 'f', 1, 'f'.charCodeAt(0)],
        [null, 'o', 1, 'o'.charCodeAt(0)],
        [null, 'o', 1, 'o'.charCodeAt(0)]
-      ]);
+      ];
+      for (let i = 0; i < data.length; ++i) line.push(data[i]);
+      buffer.lines.set(0, line);
      // Ensure wide characters take up 2 columns
      selectionManager.selectWordAt([0, 0]);
      assert.equal(selectionManager.selectionText, '中文');
@@ -193,6 +189,42 @@ describe('SelectionManager', () => {
      selectionManager.selectWordAt([15, 0]);
      assert.equal(selectionManager.selectionText, 'ij"');
    });
+    it('should expand upwards or downards for wrapped lines', () => {
+      buffer.lines.set(0, stringToRow('                                                                             foo'));
+      buffer.lines.set(1, stringToRow('bar                                                                             '));
+      buffer.lines.get(1).isWrapped = true;
+      selectionManager.selectWordAt([1, 1]);
+      assert.equal(selectionManager.selectionText, 'foobar');
+      selectionManager.model.clearSelection();
+      selectionManager.selectWordAt([78, 0]);
+      assert.equal(selectionManager.selectionText, 'foobar');
+    });
+    it('should expand both upwards and downwards for word wrapped over many lines', () => {
+      const expectedText = 'fooaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccbar';
+      buffer.lines.set(0, stringToRow('                                                                             foo'));
+      buffer.lines.set(1, stringToRow('aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'));
+      buffer.lines.set(2, stringToRow('bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb'));
+      buffer.lines.set(3, stringToRow('cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc'));
+      buffer.lines.set(4, stringToRow('bar                                                                             '));
+      buffer.lines.get(1).isWrapped = true;
+      buffer.lines.get(2).isWrapped = true;
+      buffer.lines.get(3).isWrapped = true;
+      buffer.lines.get(4).isWrapped = true;
+      selectionManager.selectWordAt([78, 0]);
+      assert.equal(selectionManager.selectionText, expectedText);
+      selectionManager.model.clearSelection();
+      selectionManager.selectWordAt([40, 1]);
+      assert.equal(selectionManager.selectionText, expectedText);
+      selectionManager.model.clearSelection();
+      selectionManager.selectWordAt([40, 2]);
+      assert.equal(selectionManager.selectionText, expectedText);
+      selectionManager.model.clearSelection();
+      selectionManager.selectWordAt([40, 3]);
+      assert.equal(selectionManager.selectionText, expectedText);
+      selectionManager.model.clearSelection();
+      selectionManager.selectWordAt([1, 4]);
+      assert.equal(selectionManager.selectionText, expectedText);
+    });
    describe('emoji', () => {
      it('should treat a single emoji as a word when wrapped in spaces', () => {
        buffer.lines.set(0, stringToRow(' ⚽ a')); // The a is here to prevent the space being trimmed in selectionText
@@ -310,6 +342,16 @@ describe('SelectionManager', () => {
      assert.deepEqual(selectionManager.model.finalSelectionStart, [0, 0]);
      assert.deepEqual(selectionManager.model.finalSelectionEnd, [terminal.cols, 0], 'The actual selection spans the entire column');
    });
+    it('should select the entire wrapped line', () => {
+      buffer.lines.set(0, stringToRow('foo'));
+      const line2 = stringToRow('bar');
+      line2.isWrapped = true;
+      buffer.lines.set(1, line2);
+      selectionManager.selectLineAt(0);
+      assert.equal(selectionManager.selectionText, 'foobar', 'The selected text is correct');
+      assert.deepEqual(selectionManager.model.finalSelectionStart, [0, 0]);
+      assert.deepEqual(selectionManager.model.finalSelectionEnd, [terminal.cols, 1], 'The actual selection spans the entire column');
+    });
  });

  describe('selectAll', () => {
@@ -326,6 +368,45 @@ describe('SelectionManager', () => {
    });
  });

+  describe('selectLines', () => {
+    it('should select a single line', () => {
+      buffer.lines.length = 3;
+      buffer.lines.set(0, stringToRow('1'));
+      buffer.lines.set(1, stringToRow('2'));
+      buffer.lines.set(2, stringToRow('3'));
+      selectionManager.selectLines(1, 1);
+      assert.deepEqual(selectionManager.model.finalSelectionStart, [0, 1]);
+      assert.deepEqual(selectionManager.model.finalSelectionEnd, [terminal.cols, 1]);
+    });
+    it('should select multiple lines', () => {
+      buffer.lines.length = 5;
+      buffer.lines.set(0, stringToRow('1'));
+      buffer.lines.set(1, stringToRow('2'));
+      buffer.lines.set(2, stringToRow('3'));
+      buffer.lines.set(3, stringToRow('4'));
+      buffer.lines.set(4, stringToRow('5'));
+      selectionManager.selectLines(1, 3);
+      assert.deepEqual(selectionManager.model.finalSelectionStart, [0, 1]);
+      assert.deepEqual(selectionManager.model.finalSelectionEnd, [terminal.cols, 3]);
+    });
+    it('should select the to the start when requesting a negative row', () => {
+      buffer.lines.length = 2;
+      buffer.lines.set(0, stringToRow('1'));
+      buffer.lines.set(1, stringToRow('2'));
+      selectionManager.selectLines(-1, 0);
+      assert.deepEqual(selectionManager.model.finalSelectionStart, [0, 0]);
+      assert.deepEqual(selectionManager.model.finalSelectionEnd, [terminal.cols, 0]);
+    });
+    it('should select the to the end when requesting beyond the final row', () => {
+      buffer.lines.length = 2;
+      buffer.lines.set(0, stringToRow('1'));
+      buffer.lines.set(1, stringToRow('2'));
+      selectionManager.selectLines(1, 2);
+      assert.deepEqual(selectionManager.model.finalSelectionStart, [0, 1]);
+      assert.deepEqual(selectionManager.model.finalSelectionEnd, [terminal.cols, 1]);
+    });
+  });
+
  describe('hasSelection', () => {
    it('should return whether there is a selection', () => {
      selectionManager.model.selectionStart = [0, 0];
@@ -341,4 +422,61 @@ describe('SelectionManager', () => {
      assert.equal(selectionManager.hasSelection, true);
    });
  });
+
+  describe('column selection', () => {
+    it('should select a column of text', () => {
+      buffer.lines.length = 3;
+      buffer.lines.set(0, stringToRow('abcdefghij'));
+      buffer.lines.set(1, stringToRow('klmnopqrst'));
+      buffer.lines.set(2, stringToRow('uvwxyz'));
+
+      selectionManager.selectionMode = SelectionMode.COLUMN;
+      selectionManager.model.selectionStart = [2, 0];
+      selectionManager.model.selectionEnd = [4, 2];
+
+      assert.equal(selectionManager.selectionText, 'cd\nmn\nwx');
+    });
+
+    it('should select a column of text without chopping up double width characters', () => {
+      buffer.lines.length = 3;
+      buffer.lines.set(0, stringToRow('a'));
+      buffer.lines.set(1, stringToRow('語'));
+      buffer.lines.set(2, stringToRow('b'));
+
+      selectionManager.selectionMode = SelectionMode.COLUMN;
+      selectionManager.model.selectionStart = [0, 0];
+      selectionManager.model.selectionEnd = [1, 2];
+
+      assert.equal(selectionManager.selectionText, 'a\n語\nb');
+    });
+
+    it('should select a column of text with single character emojis', () => {
+      buffer.lines.length = 3;
+      buffer.lines.set(0, stringToRow('a'));
+      buffer.lines.set(1, stringToRow('☃'));
+      buffer.lines.set(2, stringToRow('c'));
+
+      selectionManager.selectionMode = SelectionMode.COLUMN;
+      selectionManager.model.selectionStart = [0, 0];
+      selectionManager.model.selectionEnd = [1, 2];
+
+      assert.equal(selectionManager.selectionText, 'a\n☃\nc');
+    });
+
+    it('should select a column of text with double character emojis', () => {
+      // TODO the case this is testing works for me in the demo webapp,
+      // but doing it programmatically fails.
+      buffer.lines.length = 3;
+      buffer.lines.set(0, stringToRow('a '));
+      buffer.lines.set(1, stringArrayToRow(['😁', ' ']));
+      buffer.lines.set(2, stringToRow('c '));
+
+      selectionManager.selectionMode = SelectionMode.COLUMN;
+      selectionManager.model.selectionStart = [0, 0];
+      selectionManager.model.selectionEnd = [1, 2];
+
+      assert.equal(selectionManager.selectionText, 'a\n😁\nc');
+    });
+  });
 });
+
@@ -3,15 +3,14 @@
 * @license MIT
 */

+import { ITerminal, ISelectionManager, IBuffer, CharData, XtermListener, IBufferLine } from './Types';
 import { MouseHelper } from './utils/MouseHelper';
-import * as Browser from './utils/Browser';
-import { CharMeasure } from './utils/CharMeasure';
-import { CircularList } from './utils/CircularList';
+import * as Browser from './shared/utils/Browser';
+import { CharMeasure } from './ui/CharMeasure';
 import { EventEmitter } from './EventEmitter';
-import { ITerminal, ICircularList, ISelectionManager, IBuffer } from './Interfaces';
 import { SelectionModel } from './SelectionModel';
-import { LineData, CharData } from './Types';
-import { CHAR_DATA_WIDTH_INDEX, CHAR_DATA_CHAR_INDEX } from './Buffer';
+import { CHAR_DATA_WIDTH_INDEX, CHAR_DATA_CHAR_INDEX, CHAR_DATA_CODE_INDEX } from './Buffer';
+import { AltClickHandler } from './handlers/AltClickHandler';

 /**
 * The number of pixels the mouse needs to be above or below the viewport in
@@ -29,6 +28,12 @@ const DRAG_SCROLL_MAX_SPEED = 15;
 */
 const DRAG_SCROLL_INTERVAL = 50;

+/**
+ * The maximum amount of time that can have elapsed for an alt click to move the
+ * cursor.
+ */
+const ALT_CLICK_MOVE_CURSOR_TIME = 500;
+
 /**
 * A string containing all characters that are considered word separated by the
 * double click to select work logic.
@@ -49,10 +54,11 @@ interface IWordPosition {
 /**
 * A selection mode, this drives how the selection behaves on mouse move.
 */
-enum SelectionMode {
+export const enum SelectionMode {
  NORMAL,
  WORD,
-  LINE
+  LINE,
+  COLUMN
 }

 /**
@@ -75,7 +81,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
  /**
   * The current selection mode.
   */
-  private _activeSelectionMode: SelectionMode;
+  protected _activeSelectionMode: SelectionMode;

  /**
   * A setInterval timer that is active while the mouse is down whose callback
@@ -95,10 +101,12 @@ export class SelectionManager extends EventEmitter implements ISelectionManager

  private _mouseMoveListener: EventListener;
  private _mouseUpListener: EventListener;
+  private _trimListener: XtermListener;
+
+  private _mouseDownTimeStamp: number;

  constructor(
    private _terminal: ITerminal,
-    private _buffer: IBuffer,
    private _charMeasure: CharMeasure
  ) {
    super();
@@ -109,18 +117,29 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    this._activeSelectionMode = SelectionMode.NORMAL;
  }

+  public dispose(): void {
+    super.dispose();
+    this._removeMouseDownListeners();
+  }
+
+  private get _buffer(): IBuffer {
+    return this._terminal.buffers.active;
+  }
+
  /**
   * Initializes listener variables.
   */
  private _initListeners(): void {
    this._mouseMoveListener = event => this._onMouseMove(<MouseEvent>event);
    this._mouseUpListener = event => this._onMouseUp(<MouseEvent>event);
+    this._trimListener = (amount: number) => this._onTrim(amount);

-    // Only adjust the selection on trim, shiftElements is rarely used (only in
-    // reverseIndex) and delete in a splice is only ever used when the same
-    // number of elements was just added. Given this is could actually be
-    // beneficial to leave the selection as is for these cases.
-    this._buffer.lines.on('trim', (amount: number) => this._onTrim(amount));
+    this.initBuffersListeners();
+  }
+
+  public initBuffersListeners(): void {
+    this._terminal.buffer.lines.on('trim', this._trimListener);
+    this._terminal.buffers.on('activate', e => this._onBufferActivate(e));
  }

  /**
@@ -139,16 +158,6 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    this._enabled = true;
  }

-  /**
-   * Sets the active buffer, this should be called when the alt buffer is
-   * switched in or out.
-   * @param buffer The active buffer.
-   */
-  public setBuffer(buffer: IBuffer): void {
-    this._buffer = buffer;
-    this.clearSelection();
-  }
-
  public get selectionStart(): [number, number] { return this._model.finalSelectionStart; }
  public get selectionEnd(): [number, number] { return this._model.finalSelectionEnd; }

@@ -174,30 +183,43 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
      return '';
    }

-    // Get first row
-    const startRowEndCol = start[1] === end[1] ? end[0] : null;
-    let result: string[] = [];
-    result.push(this._buffer.translateBufferLineToString(start[1], true, start[0], startRowEndCol));
+    const result: string[] = [];

-    // Get middle rows
-    for (let i = start[1] + 1; i <= end[1] - 1; i++) {
-      const bufferLine = this._buffer.lines.get(i);
-      const lineText = this._buffer.translateBufferLineToString(i, true);
-      if ((<any>bufferLine).isWrapped) {
-        result[result.length - 1] += lineText;
-      } else {
+    if (this._activeSelectionMode === SelectionMode.COLUMN) {
+      // Ignore zero width selections
+      if (start[0] === end[0]) {
+        return '';
+      }
+
+      for (let i = start[1]; i <= end[1]; i++) {
+        const lineText = this._buffer.translateBufferLineToString(i, true, start[0], end[0]);
        result.push(lineText);
      }
-    }
+    } else {
+      // Get first row
+      const startRowEndCol = start[1] === end[1] ? end[0] : null;
+      result.push(this._buffer.translateBufferLineToString(start[1], true, start[0], startRowEndCol));

-    // Get final row
-    if (start[1] !== end[1]) {
-      const bufferLine = this._buffer.lines.get(end[1]);
-      const lineText = this._buffer.translateBufferLineToString(end[1], true, 0, end[0]);
-      if ((<any>bufferLine).isWrapped) {
-        result[result.length - 1] += lineText;
-      } else {
-        result.push(lineText);
+      // Get middle rows
+      for (let i = start[1] + 1; i <= end[1] - 1; i++) {
+        const bufferLine = this._buffer.lines.get(i);
+        const lineText = this._buffer.translateBufferLineToString(i, true);
+        if (bufferLine.isWrapped) {
+          result[result.length - 1] += lineText;
+        } else {
+          result.push(lineText);
+        }
+      }
+
+      // Get final row
+      if (start[1] !== end[1]) {
+        const bufferLine = this._buffer.lines.get(end[1]);
+        const lineText = this._buffer.translateBufferLineToString(end[1], true, 0, end[0]);
+        if (bufferLine.isWrapped) {
+          result[result.length - 1] += lineText;
+        } else {
+          result.push(lineText);
+        }
      }
    }

@@ -246,7 +268,42 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   */
  private _refresh(): void {
    this._refreshAnimationFrame = null;
-    this.emit('refresh', { start: this._model.finalSelectionStart, end: this._model.finalSelectionEnd });
+    this.emit('refresh', {
+      start: this._model.finalSelectionStart,
+      end: this._model.finalSelectionEnd,
+      columnSelectMode: this._activeSelectionMode === SelectionMode.COLUMN
+    });
+  }
+
+  /**
+   * Checks if the current click was inside the current selection
+   * @param event The mouse event
+   */
+  public isClickInSelection(event: MouseEvent): boolean {
+    const coords = this._getMouseBufferCoords(event);
+    const start = this._model.finalSelectionStart;
+    const end = this._model.finalSelectionEnd;
+
+    if (!start || !end) {
+      return false;
+    }
+
+    return (coords[1] > start[1] && coords[1] < end[1]) ||
+        (start[1] === end[1] && coords[1] === start[1] && coords[0] > start[0] && coords[0] < end[0]) ||
+        (start[1] < end[1] && coords[1] === end[1] && coords[0] < end[0]);
+  }
+
+  /**
+   * Selects word at the current mouse event coordinates.
+   * @param event The mouse event.
+   */
+  public selectWordAtCursor(event: MouseEvent): void {
+    const coords = this._getMouseBufferCoords(event);
+    if (coords) {
+      this._selectWordAt(coords, false);
+      this._model.selectionEnd = null;
+      this.refresh(true);
+    }
  }

  /**
@@ -258,6 +315,16 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    this._terminal.emit('selection');
  }

+  public selectLines(start: number, end: number): void {
+    this._model.clearSelection();
+    start = Math.max(start, 0);
+    end = Math.min(end, this._terminal.buffer.lines.length - 1);
+    this._model.selectionStart = [0, start];
+    this._model.selectionEnd = [this._terminal.cols, end];
+    this.refresh();
+    this._terminal.emit('selection');
+  }
+
  /**
   * Handle the buffer being trimmed, adjust the selection position.
   * @param amount The amount the buffer is being trimmed.
@@ -274,7 +341,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * @param event The mouse event.
   */
  private _getMouseBufferCoords(event: MouseEvent): [number, number] {
-    const coords = this._terminal.mouseHelper.getCoords(event, this._terminal.element, this._charMeasure, this._terminal.options.lineHeight, this._terminal.cols, this._terminal.rows, true);
+    const coords = this._terminal.mouseHelper.getCoords(event, this._terminal.screenElement, this._charMeasure, this._terminal.options.lineHeight, this._terminal.cols, this._terminal.rows, true);
    if (!coords) {
      return null;
    }
@@ -294,7 +361,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * @param event The mouse event.
   */
  private _getMouseEventScrollAmount(event: MouseEvent): number {
-    let offset = MouseHelper.getCoordsRelativeToElement(event, this._terminal.element)[1];
+    let offset = MouseHelper.getCoordsRelativeToElement(event, this._terminal.screenElement)[1];
    const terminalHeight = this._terminal.rows * Math.ceil(this._charMeasure.height * this._terminal.options.lineHeight);
    if (offset >= 0 && offset <= terminalHeight) {
      return 0;
@@ -314,7 +381,11 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * @param event The mouse event.
   */
  public shouldForceSelection(event: MouseEvent): boolean {
-    return Browser.isMac ? event.altKey : event.shiftKey;
+    if (Browser.isMac) {
+      return event.altKey && this._terminal.options.macOptionClickForcesSelection;
+    }
+
+    return event.shiftKey;
  }

  /**
@@ -322,6 +393,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * @param event The mousedown event.
   */
  public onMouseDown(event: MouseEvent): void {
+    this._mouseDownTimeStamp = event.timeStamp;
    // If we have selection, we want the context menu on right click even if the
    // terminal is in mouse mode.
    if (event.button === 2 && this.hasSelection) {
@@ -379,8 +451,10 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * Removes the listeners that are registered when mousedown is triggered.
   */
  private _removeMouseDownListeners(): void {
-    this._terminal.element.ownerDocument.removeEventListener('mousemove', this._mouseMoveListener);
-    this._terminal.element.ownerDocument.removeEventListener('mouseup', this._mouseUpListener);
+    if (this._terminal.element.ownerDocument) {
+      this._terminal.element.ownerDocument.removeEventListener('mousemove', this._mouseMoveListener);
+      this._terminal.element.ownerDocument.removeEventListener('mouseup', this._mouseUpListener);
+    }
    clearInterval(this._dragScrollIntervalTimer);
    this._dragScrollIntervalTimer = null;
  }
@@ -404,7 +478,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
  private _onSingleClick(event: MouseEvent): void {
    this._model.selectionStartLength = 0;
    this._model.isSelectAllActive = false;
-    this._activeSelectionMode = SelectionMode.NORMAL;
+    this._activeSelectionMode = this.shouldColumnSelect(event) ? SelectionMode.COLUMN : SelectionMode.NORMAL;

    // Initialize the new selection
    this._model.selectionStart = this._getMouseBufferCoords(event);
@@ -426,7 +500,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager

    // If the mouse is over the second half of a wide character, adjust the
    // selection to cover the whole character
-    const char = line[this._model.selectionStart[0]];
+    const char = line.get(this._model.selectionStart[0]);
    if (char[CHAR_DATA_WIDTH_INDEX] === 0) {
      this._model.selectionStart[0]++;
    }
@@ -440,7 +514,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    const coords = this._getMouseBufferCoords(event);
    if (coords) {
      this._activeSelectionMode = SelectionMode.WORD;
-      this._selectWordAt(coords);
+      this._selectWordAt(coords, true);
    }
  }

@@ -457,6 +531,14 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    }
  }

+  /**
+   * Returns whether the selection manager should operate in column select mode
+   * @param event the mouse or keyboard event
+   */
+  public shouldColumnSelect(event: KeyboardEvent | MouseEvent): boolean {
+    return event.altKey && !(Browser.isMac && this._terminal.options.macOptionClickForcesSelection);
+  }
+
  /**
   * Handles the mousemove event when the mouse button is down, recording the
   * end of the selection and refreshing the selection.
@@ -494,18 +576,21 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    this._dragScrollAmount = this._getMouseEventScrollAmount(event);

    // If the cursor was above or below the viewport, make sure it's at the
-    // start or end of the viewport respectively.
-    if (this._dragScrollAmount > 0) {
-      this._model.selectionEnd[0] = this._terminal.cols;
-    } else if (this._dragScrollAmount < 0) {
-      this._model.selectionEnd[0] = 0;
+    // start or end of the viewport respectively. This should only happen when
+    // NOT in column select mode.
+    if (this._activeSelectionMode !== SelectionMode.COLUMN) {
+      if (this._dragScrollAmount > 0) {
+        this._model.selectionEnd[0] = this._terminal.cols;
+      } else if (this._dragScrollAmount < 0) {
+        this._model.selectionEnd[0] = 0;
+      }
    }

    // If the character is a wide character include the cell to the right in the
    // selection. Note that selections at the very end of the line will never
    // have a character.
    if (this._model.selectionEnd[1] < this._buffer.lines.length) {
-      const char = this._buffer.lines.get(this._model.selectionEnd[1])[this._model.selectionEnd[0]];
+      const char = this._buffer.lines.get(this._model.selectionEnd[1]).get(this._model.selectionEnd[0]);
      if (char && char[CHAR_DATA_WIDTH_INDEX] === 0) {
        this._model.selectionEnd[0]++;
      }
@@ -527,10 +612,19 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
    if (this._dragScrollAmount) {
      this._terminal.scrollLines(this._dragScrollAmount, false);
      // Re-evaluate selection
+      // If the cursor was above or below the viewport, make sure it's at the
+      // start or end of the viewport respectively. This should only happen when
+      // NOT in column select mode.
      if (this._dragScrollAmount > 0) {
-        this._model.selectionEnd = [this._terminal.cols - 1, this._terminal.buffer.ydisp + this._terminal.rows];
+        if (this._activeSelectionMode !== SelectionMode.COLUMN) {
+          this._model.selectionEnd[0] = this._terminal.cols;
+        }
+        this._model.selectionEnd[1] = Math.min(this._terminal.buffer.ydisp + this._terminal.rows, this._terminal.buffer.lines.length - 1);
      } else {
-        this._model.selectionEnd = [0, this._terminal.buffer.ydisp];
+        if (this._activeSelectionMode !== SelectionMode.COLUMN) {
+          this._model.selectionEnd[0] = 0;
+        }
+        this._model.selectionEnd[1] = this._terminal.buffer.ydisp;
      }
      this.refresh();
    }
@@ -541,10 +635,25 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * @param event The mouseup event.
   */
  private _onMouseUp(event: MouseEvent): void {
+    const timeElapsed = event.timeStamp - this._mouseDownTimeStamp;
+
    this._removeMouseDownListeners();

-    if (this.hasSelection)
+    if (this.selectionText.length <= 1 && timeElapsed < ALT_CLICK_MOVE_CURSOR_TIME) {
+      (new AltClickHandler(event, this._terminal)).move();
+    } else if (this.hasSelection) {
      this._terminal.emit('selection');
+    }
+  }
+
+  private _onBufferActivate(e: {activeBuffer: IBuffer, inactiveBuffer: IBuffer}): void {
+    this.clearSelection();
+    // Only adjust the selection on trim, shiftElements is rarely used (only in
+    // reverseIndex) and delete in a splice is only ever used when the same
+    // number of elements was just added. Given this is could actually be
+    // beneficial to leave the selection as is for these cases.
+    e.inactiveBuffer.lines.off('trim', this._trimListener);
+    e.activeBuffer.lines.on('trim', this._trimListener);
  }

  /**
@@ -552,10 +661,10 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * latter takes into account wide characters.
   * @param coords The coordinates to find the 2 index for.
   */
-  private _convertViewportColToCharacterIndex(bufferLine: any, coords: [number, number]): number {
+  private _convertViewportColToCharacterIndex(bufferLine: IBufferLine, coords: [number, number]): number {
    let charIndex = coords[0];
    for (let i = 0; coords[0] >= i; i++) {
-      const char = bufferLine[i];
+      const char = bufferLine.get(i);
      if (char[CHAR_DATA_WIDTH_INDEX] === 0) {
        // Wide characters aren't included in the line string so decrement the
        // index so the index is back on the wide character.
@@ -582,7 +691,12 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * Gets positional information for the word at the coordinated specified.
   * @param coords The coordinates to get the word at.
   */
-  private _getWordAt(coords: [number, number]): IWordPosition {
+  private _getWordAt(coords: [number, number], allowWhitespaceOnlySelection: boolean, followWrappedLinesAbove: boolean = true, followWrappedLinesBelow: boolean = true): IWordPosition {
+    // Ensure coords are within viewport (eg. not within scroll bar)
+    if (coords[0] >= this._terminal.cols) {
+      return null;
+    }
+
    const bufferLine = this._buffer.lines.get(coords[1]);
    if (!bufferLine) {
      return null;
@@ -619,24 +733,24 @@ export class SelectionManager extends EventEmitter implements ISelectionManager

      // Consider the initial position, skip it and increment the wide char
      // variable
-      if (bufferLine[startCol][CHAR_DATA_WIDTH_INDEX] === 0) {
+      if (bufferLine.get(startCol)[CHAR_DATA_WIDTH_INDEX] === 0) {
        leftWideCharCount++;
        startCol--;
      }
-      if (bufferLine[endCol][CHAR_DATA_WIDTH_INDEX] === 2) {
+      if (bufferLine.get(endCol)[CHAR_DATA_WIDTH_INDEX] === 2) {
        rightWideCharCount++;
        endCol++;
      }

      // Adjust the end index for characters whose length are > 1 (emojis)
-      if (bufferLine[endCol][CHAR_DATA_CHAR_INDEX].length > 1) {
-        rightLongCharOffset += bufferLine[endCol][CHAR_DATA_CHAR_INDEX].length - 1;
-        endIndex += bufferLine[endCol][CHAR_DATA_CHAR_INDEX].length - 1;
+      if (bufferLine.get(endCol)[CHAR_DATA_CHAR_INDEX].length > 1) {
+        rightLongCharOffset += bufferLine.get(endCol)[CHAR_DATA_CHAR_INDEX].length - 1;
+        endIndex += bufferLine.get(endCol)[CHAR_DATA_CHAR_INDEX].length - 1;
      }

      // Expand the string in both directions until a space is hit
-      while (startCol > 0 && startIndex > 0 && !this._isCharWordSeparator(bufferLine[startCol - 1])) {
-        const char = bufferLine[startCol - 1];
+      while (startCol > 0 && startIndex > 0 && !this._isCharWordSeparator(bufferLine.get(startCol - 1))) {
+        const char = bufferLine.get(startCol - 1);
        if (char[CHAR_DATA_WIDTH_INDEX] === 0) {
          // If the next character is a wide char, record it and skip the column
          leftWideCharCount++;
@@ -650,8 +764,8 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
        startIndex--;
        startCol--;
      }
-      while (endCol < bufferLine.length && endIndex + 1 < line.length && !this._isCharWordSeparator(bufferLine[endCol + 1])) {
-        const char = bufferLine[endCol + 1];
+      while (endCol < bufferLine.length && endIndex + 1 < line.length && !this._isCharWordSeparator(bufferLine.get(endCol + 1))) {
+        const char = bufferLine.get(endCol + 1);
        if (char[CHAR_DATA_WIDTH_INDEX] === 2) {
          // If the next character is a wide char, record it and skip the column
          rightWideCharCount++;
@@ -672,7 +786,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager

    // Calculate the start _column_, converting the the string indexes back to
    // column coordinates.
-    const start =
+    let start =
        startIndex // The index of the selection's start char in the line string
        + charOffset // The difference between the initial char's column and index
        - leftWideCharCount // The number of wide chars left of the initial char
@@ -680,7 +794,7 @@ export class SelectionManager extends EventEmitter implements ISelectionManager

    // Calculate the length in _columns_, converting the the string indexes back
    // to column coordinates.
-    const length = Math.min(this._terminal.cols, // Disallow lengths larger than the terminal cols
+    let length = Math.min(this._terminal.cols, // Disallow lengths larger than the terminal cols
        endIndex // The index of the selection's end char in the line string
        - startIndex // The index of the selection's start char in the line string
        + leftWideCharCount // The number of wide chars left of the initial char
@@ -688,16 +802,54 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
        - leftLongCharOffset // The number of additional chars left of the initial char added by columns with strings longer than 1 (emojis)
        - rightLongCharOffset); // The number of additional chars right of the initial char (inclusive) added by columns with strings longer than 1 (emojis)

+    if (!allowWhitespaceOnlySelection && line.slice(startIndex, endIndex).trim() === '') {
+      return null;
+    }
+
+    // Recurse upwards if the line is wrapped and the word wraps to the above line
+    if (followWrappedLinesAbove) {
+      if (start === 0 && bufferLine.get(0)[CHAR_DATA_CODE_INDEX] !== 32 /*' '*/) {
+        const previousBufferLine = this._buffer.lines.get(coords[1] - 1);
+        if (previousBufferLine && bufferLine.isWrapped && previousBufferLine.get(this._terminal.cols - 1)[CHAR_DATA_CODE_INDEX] !== 32 /*' '*/) {
+          const previousLineWordPosition = this._getWordAt([this._terminal.cols - 1, coords[1] - 1], false, true, false);
+          if (previousLineWordPosition) {
+            const offset = this._terminal.cols - previousLineWordPosition.start;
+            start -= offset;
+            length += offset;
+          }
+        }
+      }
+    }
+
+    // Recurse downwards if the line is wrapped and the word wraps to the next line
+    if (followWrappedLinesBelow) {
+      if (start + length === this._terminal.cols && bufferLine.get(this._terminal.cols - 1)[CHAR_DATA_CODE_INDEX] !== 32 /*' '*/) {
+        const nextBufferLine = this._buffer.lines.get(coords[1] + 1);
+        if (nextBufferLine && nextBufferLine.isWrapped && nextBufferLine.get(0)[CHAR_DATA_CODE_INDEX] !== 32 /*' '*/) {
+          const nextLineWordPosition = this._getWordAt([0, coords[1] + 1], false, false, true);
+          if (nextLineWordPosition) {
+            length += nextLineWordPosition.length;
+          }
+        }
+      }
+    }
+
    return { start, length };
  }

  /**
   * Selects the word at the coordinates specified.
   * @param coords The coordinates to get the word at.
+   * @param allowWhitespaceOnlySelection If whitespace should be selected
   */
-  protected _selectWordAt(coords: [number, number]): void {
-    const wordPosition = this._getWordAt(coords);
+  protected _selectWordAt(coords: [number, number], allowWhitespaceOnlySelection: boolean): void {
+    const wordPosition = this._getWordAt(coords, allowWhitespaceOnlySelection);
    if (wordPosition) {
+      // Adjust negative start value
+      while (wordPosition.start < 0) {
+        wordPosition.start += this._terminal.cols;
+        coords[1]--;
+      }
      this._model.selectionStart = [wordPosition.start, coords[1]];
      this._model.selectionStartLength = wordPosition.length;
    }
@@ -708,9 +860,26 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * @param coords The coordinates to get the word at.
   */
  private _selectToWordAt(coords: [number, number]): void {
-    const wordPosition = this._getWordAt(coords);
+    const wordPosition = this._getWordAt(coords, true);
    if (wordPosition) {
-      this._model.selectionEnd = [this._model.areSelectionValuesReversed() ? wordPosition.start : (wordPosition.start + wordPosition.length), coords[1]];
+      let endRow = coords[1];
+
+      // Adjust negative start value
+      while (wordPosition.start < 0) {
+        wordPosition.start += this._terminal.cols;
+        endRow--;
+      }
+
+      // Adjust wrapped length value, this only needs to happen when values are reversed as in that
+      // case we're interested in the start of the word, not the end
+      if (!this._model.areSelectionValuesReversed()) {
+        while (wordPosition.start + wordPosition.length > this._terminal.cols) {
+          wordPosition.length -= this._terminal.cols;
+          endRow++;
+        }
+      }
+
+      this._model.selectionEnd = [this._model.areSelectionValuesReversed() ? wordPosition.start : wordPosition.start + wordPosition.length, endRow];
    }
  }

@@ -733,7 +902,9 @@ export class SelectionManager extends EventEmitter implements ISelectionManager
   * @param line The line index.
   */
  protected _selectLineAt(line: number): void {
-    this._model.selectionStart = [0, line];
-    this._model.selectionStartLength = this._terminal.cols;
+    const wrappedRange = this._buffer.getWrappedRangeForLine(line);
+    this._model.selectionStart = [0, wrappedRange.first];
+    this._model.selectionEnd = [this._terminal.cols, wrappedRange.last];
+    this._model.selectionStartLength = 0;
  }
 }
@@ -4,9 +4,9 @@
 */

 import { assert } from 'chai';
-import { ITerminal } from './Interfaces';
+import { ITerminal } from './Types';
 import { SelectionModel } from './SelectionModel';
-import {BufferSet} from './BufferSet';
+import { BufferSet } from './BufferSet';
 import { MockTerminal } from './utils/TestUtils.test';

 class TestSelectionModel extends SelectionModel {
@@ -18,9 +18,6 @@ class TestSelectionModel extends SelectionModel {
 }

 describe('SelectionManager', () => {
-  let window: Window;
-  let document: Document;
-
  let terminal: ITerminal;
  let model: TestSelectionModel;

@@ -131,6 +128,11 @@ describe('SelectionManager', () => {
      model.selectionEnd = [3, 2];
      assert.deepEqual(model.finalSelectionEnd, [4, 2]);
    });
+    it('should return the end on a different row when start + length overflows onto a following row', () => {
+      model.selectionStart = [78, 2];
+      model.selectionStartLength = 4;
+      assert.deepEqual(model.finalSelectionEnd, [2, 3]);
+    });
    it('should return selection end if selection end is after selection start + length', () => {
      model.selectionStart = [2, 2];
      model.selectionStartLength = 2;
@@ -3,7 +3,7 @@
 * @license MIT
 */

-import { ITerminal } from './Interfaces';
+import { ITerminal } from './Types';

 /**
 * Represents a selection within the buffer. This model only cares about column
@@ -76,9 +76,13 @@ export class SelectionModel {
      return null;
    }

-    // Use the selection start if the end doesn't exist or they're reversed
+    // Use the selection start + length if the end doesn't exist or they're reversed
    if (!this.selectionEnd || this.areSelectionValuesReversed()) {
-      return [this.selectionStart[0] + this.selectionStartLength, this.selectionStart[1]];
+      const startPlusLength = this.selectionStart[0] + this.selectionStartLength;
+      if (startPlusLength > this._terminal.cols) {
+        return [startPlusLength % this._terminal.cols, this.selectionStart[1] + Math.floor(startPlusLength / this._terminal.cols)];
+      }
+      return [startPlusLength, this.selectionStart[1]];
    }

    // Ensure the the word/line is selected after a double/triple click
@@ -0,0 +1,60 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { ITerminal, ISoundManager } from './Types';
+
+// Source: https://freesound.org/people/altemark/sounds/45759/
+// This sound is released under the Creative Commons Attribution 3.0 Unported
+// (CC BY 3.0) license. It was created by 'altemark'. No modifications have been
+// made, apart from the conversion to base64.
+export const DEFAULT_BELL_SOUND = 'data:audio/wav;base64,UklGRigBAABXQVZFZm10IBAAAAABAAEARKwAAIhYAQACABAAZGF0YQQBAADpAFgCwAMlBZoG/wdmCcoKRAypDQ8PbRDBEQQTOxRtFYcWlBePGIUZXhoiG88bcBz7HHIdzh0WHlMeZx51HmkeUx4WHs8dah0AHXwc3hs9G4saxRnyGBIYGBcQFv8U4RPAEoYRQBACD70NWwwHC6gJOwjWBloF7gOBAhABkf8b/qv8R/ve+Xf4Ife79W/0JfPZ8Z/wde9N7ijtE+wU6xvqM+lb6H7nw+YX5mrlxuQz5Mzje+Ma49fioeKD4nXiYeJy4pHitOL04j/jn+MN5IPkFOWs5U3mDefM55/ogOl36m7rdOyE7abuyu8D8Unyj/Pg9D/2qfcb+Yn6/vuK/Qj/lAAlAg==';
+
+export class SoundManager implements ISoundManager {
+  private _audioContext: AudioContext;
+
+  constructor(
+    private _terminal: ITerminal
+  ) {
+  }
+
+  public playBellSound(): void {
+    const audioContextCtor: typeof AudioContext = (<any>window).AudioContext || (<any>window).webkitAudioContext;
+    if (!this._audioContext && audioContextCtor) {
+      this._audioContext = new audioContextCtor();
+    }
+
+    if (this._audioContext) {
+      const bellAudioSource = this._audioContext.createBufferSource();
+      const context = this._audioContext;
+      this._audioContext.decodeAudioData(this._base64ToArrayBuffer(this._removeMimeType(this._terminal.options.bellSound)), (buffer) => {
+        bellAudioSource.buffer = buffer;
+        bellAudioSource.connect(context.destination);
+        bellAudioSource.start(0);
+      });
+    } else {
+      console.warn('Sorry, but the Web Audio API is not supported by your browser. Please, consider upgrading to the latest version');
+    }
+  }
+
+  private _base64ToArrayBuffer(base64: string): ArrayBuffer {
+    const binaryString = window.atob(base64);
+    const len = binaryString.length;
+    const bytes = new Uint8Array(len);
+
+    for (let i = 0; i < len; i++) {
+      bytes[i] = binaryString.charCodeAt(i);
+    }
+
+    return bytes.buffer;
+  }
+
+  private _removeMimeType(dataURI: string): string {
+    // Split the input to get the mime-type and the data itself
+    const splitUri = dataURI.split(',');
+
+    // Return only the data
+    return splitUri[1];
+  }
+}
@@ -0,0 +1,8 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+export let blankLine = 'Blank line';
+export let promptLabel = 'Terminal input';
+export let tooMuchOutput = 'Too much output to announce, navigate to rows manually to read';
@@ -14,18 +14,23 @@ import * as pty from 'node-pty';
 import { assert } from 'chai';
 import { Terminal } from './Terminal';
 import { CHAR_DATA_CHAR_INDEX } from './Buffer';
+import { IViewport } from './Types';

-let primitive_pty: any;
+class TestTerminal extends Terminal {
+  innerWrite(): void { this._innerWrite(); }
+}
+
+let primitivePty: any;

 // fake sychronous pty write - read
 // we just pipe the data from slave to master as a child program would do
 // pty.js opens pipe fds with O_NONBLOCK
 // just wait 10ms instead of setting fds to blocking mode
 function ptyWriteRead(data: string, cb: (result: string) => void): void {
-  fs.writeSync(primitive_pty.slave, data);
+  fs.writeSync(primitivePty.slave, data);
  setTimeout(() => {
-    let b = new Buffer(64000);
-    let bytes = fs.readSync(primitive_pty.master, b, 0, 64000, null);
+    const b = new Buffer(64000);
+    const bytes = fs.readSync(primitivePty.master, b, 0, 64000, null);
    cb(b.toString('utf8', 0, bytes));
  });
 }
@@ -37,7 +42,7 @@ function ptyReset(cb: (result: string) => void): void {

 /* debug helpers */
 // generate colorful noisy output to compare xterm and emulator cell states
-function formatError(in_: string, out_: string, expected: string): string {
+function formatError(input: string, output: string, expected: string): string {
  function addLineNumber(start: number, color: string): (s: string) => string {
    let counter = start || 0;
    return function(s: string): string {
@@ -45,11 +50,11 @@ function formatError(in_: string, out_: string, expected: string): string {
      return '\x1b[33m' + (' ' + counter).slice(-2) + color + s;
    };
  }
-  let line80 = '12345678901234567890123456789012345678901234567890123456789012345678901234567890';
+  const line80 = '12345678901234567890123456789012345678901234567890123456789012345678901234567890';
  let s = '';
-  s += '\n\x1b[34m' + JSON.stringify(in_);
+  s += '\n\x1b[34m' + JSON.stringify(input);
  s += '\n\x1b[33m  ' + line80 + '\n';
-  s += out_.split('\n').map(addLineNumber(0, '\x1b[31m')).join('\n');
+  s += output.split('\n').map(addLineNumber(0, '\x1b[31m')).join('\n');
  s += '\n\x1b[33m  ' + line80 + '\n';
  s += expected.split('\n').map(addLineNumber(0, '\x1b[32m')).join('\n');
  return s;
@@ -58,15 +63,15 @@ function formatError(in_: string, out_: string, expected: string): string {
 // simple debug output of terminal cells
 function terminalToString(term: Terminal): string {
  let result = '';
-  let line_s = '';
+  let lineText = '';
  for (let line = term.buffer.ybase; line < term.buffer.ybase + term.rows; line++) {
-    line_s = '';
+    lineText = '';
    for (let cell = 0; cell < term.cols; ++cell) {
-      line_s += term.buffer.lines.get(line)[cell][CHAR_DATA_CHAR_INDEX];
+      lineText += term.buffer.lines.get(line).get(cell)[CHAR_DATA_CHAR_INDEX];
    }
    // rtrim empty cells as xterm does
-    line_s = line_s.replace(/\s+$/, '');
-    result += line_s;
+    lineText = lineText.replace(/\s+$/, '');
+    result += lineText;
    result += '\n';
  }
  return result;
@@ -74,34 +79,35 @@ function terminalToString(term: Terminal): string {

 // Skip tests on Windows since pty.open isn't supported
 if (os.platform() !== 'win32') {
-  let CONSOLE_LOG = console.log;
+  const consoleLog = console.log;

  // expect files need terminal at 80x25!
-  let COLS = 80;
-  let ROWS = 25;
+  const cols = 80;
+  const rows = 25;

  /** some helpers for pty interaction */
  // we need a pty in between to get the termios decorations
  // for the basic test cases a raw pty device is enough
-  primitive_pty = pty.native.open(COLS, ROWS);
+  primitivePty = (<any>pty).native.open(cols, rows);

  /** tests */
  describe('xterm output comparison', () => {
-    let xterm;
+    let xterm: TestTerminal;

    beforeEach(() => {
-      xterm = new Terminal({ cols: COLS, rows: ROWS });
+      xterm = new TestTerminal({ cols: cols, rows: rows });
      xterm.refresh = () => {};
-      xterm.viewport = {
+      xterm.viewport = <IViewport>{
        syncScrollArea: () => {}
      };
    });

    // omit stack trace for escape sequence files
    Error.stackTraceLimit = 0;
-    let files = glob.sync('**/escape_sequence_files/*.in', { cwd: path.join(__dirname, '..')});
+    const files = glob.sync('**/escape_sequence_files/*.in', { cwd: path.join(__dirname, '..')});
+    // for (let i = 0; i < files.length; ++i) console.debug(i, files[i]);
    // only successful tests for now
-    let skip = [
+    const skip = [
      10, 16, 17, 19, 32, 33, 34, 35, 36, 39,
      40, 42, 43, 44, 45, 46, 47, 48, 49, 50,
      51, 52, 54, 55, 56, 57, 58, 59, 60, 61,
@@ -118,24 +124,25 @@ if (os.platform() !== 'win32') {
      ((filename: string) => {
        it(filename.split('/').slice(-1)[0], done => {
          ptyReset(() => {
-            let in_file = fs.readFileSync(filename, 'utf8');
-            ptyWriteRead(in_file, from_pty => {
+            const inFile = fs.readFileSync(filename, 'utf8');
+            ptyWriteRead(inFile, fromPty => {
              // uncomment this to get log from terminal
              // console.log = function(){};

              // Perform a synchronous .write(data)
-              xterm.writeBuffer.push(from_pty);
+              xterm.writeBuffer.push(fromPty);
              xterm.innerWrite();

-              let from_emulator = terminalToString(xterm);
-              console.log = CONSOLE_LOG;
-              let expected = fs.readFileSync(filename.split('.')[0] + '.text', 'utf8');
+              const fromEmulator = terminalToString(xterm);
+              console.log = consoleLog;
+              const expected = fs.readFileSync(filename.split('.')[0] + '.text', 'utf8');
+
              // Some of the tests have whitespace on the right of lines, we trim all the linex
              // from xterm.js so ignore this for now at least.
-              let expectedRightTrimmed = expected.split('\n').map(l => l.replace(/\s+$/, '')).join('\n');
-              if (from_emulator !== expectedRightTrimmed) {
+              const expectedRightTrimmed = expected.split('\n').map(l => l.replace(/\s+$/, '')).join('\n');
+              if (fromEmulator !== expectedRightTrimmed) {
                // uncomment to get noisy output
-                throw new Error(formatError(in_file, from_emulator, expected));
+                throw new Error(formatError(inFile, fromEmulator, expected));
              //   throw new Error('mismatch');
              }
              done();
@@ -155,9 +162,7 @@ describe('typings', () => {
      tsc += '.cmd';
    }
    const fixtureDir = path.join(__dirname, '..', 'fixtures', 'typings-test');
-    let result = cp.spawnSync(tsc, { cwd: fixtureDir });
+    const result = cp.spawnSync(tsc, { cwd: fixtureDir });
    assert.equal(result.status, 0, `build did not succeed:\nstdout: ${result.stdout.toString()}\nstderr: ${result.stderr.toString()}\n`);
-    // Clean up
-    fs.unlinkSync(path.join(fixtureDir, 'typings-test.js'));
  });
 });
@@ -5,35 +5,35 @@

 import { assert, expect } from 'chai';
 import { Terminal } from './Terminal';
-import * as attach from './addons/attach/attach';
 import { MockViewport, MockCompositionHelper, MockRenderer } from './utils/TestUtils.test';
-import { CHAR_DATA_CHAR_INDEX, CHAR_DATA_WIDTH_INDEX } from './Buffer';
+import { CHAR_DATA_CHAR_INDEX, CHAR_DATA_WIDTH_INDEX, DEFAULT_ATTR } from './Buffer';
+import { BufferLine } from './BufferLine';

 const INIT_COLS = 80;
 const INIT_ROWS = 24;

 class TestTerminal extends Terminal {
-  public evaluateKeyEscapeSequence(ev: any): {cancel: boolean, key: string, scrollLines: number} { return this._evaluateKeyEscapeSequence(<KeyboardEvent>ev); }
  public keyDown(ev: any): boolean { return this._keyDown(ev); }
  public keyPress(ev: any): boolean { return this._keyPress(ev); }
 }

 describe('term.js addons', () => {
  let term: TestTerminal;
+  const termOptions = {
+    cols: INIT_COLS,
+    rows: INIT_ROWS
+  };

  beforeEach(() => {
-    term = new TestTerminal({
-      cols: INIT_COLS,
-      rows: INIT_ROWS
-    });
+    term = new TestTerminal(termOptions);
    term.refresh = () => {};
    (<any>term).renderer = new MockRenderer();
    term.viewport = new MockViewport();
-    (<any>term).compositionHelper = new MockCompositionHelper();
+    (<any>term)._compositionHelper = new MockCompositionHelper();
    // Force synchronous writes
    term.write = (data) => {
      term.writeBuffer.push(data);
-      (<any>term).innerWrite();
+      (<any>term)._innerWrite();
    };
    (<any>term).element = {
      classList: {
@@ -43,11 +43,13 @@ describe('term.js addons', () => {
    };
  });

-  it('should apply addons with Terminal.applyAddon', () => {
-    Terminal.applyAddon(attach);
-    // Test that addon was applied successfully, adding attach to Terminal's
-    // prototype.
-    assert.equal(typeof (<any>Terminal).prototype.attach, 'function');
+  it('should not mutate the options parameter', () => {
+    term.setOption('cols', 1000);
+
+    assert.deepEqual(termOptions, {
+      cols: INIT_COLS,
+      rows: INIT_ROWS
+    });
  });

  describe('getOption', () => {
@@ -67,13 +69,13 @@ describe('term.js addons', () => {
  });

  describe('attachCustomKeyEventHandler', () => {
-    let evKeyDown = <KeyboardEvent>{
+    const evKeyDown = <KeyboardEvent>{
      preventDefault: () => {},
      stopPropagation: () => {},
      type: 'keydown',
      keyCode: 77
    };
-    let evKeyPress = <KeyboardEvent>{
+    const evKeyPress = <KeyboardEvent>{
      preventDefault: () => {},
      stopPropagation: () => {},
      type: 'keypress',
@@ -119,9 +121,20 @@ describe('term.js addons', () => {
    });
  });

+  describe('reset', () => {
+    it('should not affect cursorState', () => {
+      term.cursorState = 1;
+      term.reset();
+      assert.equal(term.cursorState, 1);
+      term.cursorState = 0;
+      term.reset();
+      assert.equal(term.cursorState, 0);
+    });
+  });
+
  describe('clear', () => {
    it('should clear a buffer equal to rows', () => {
-      let promptLine = term.buffer.lines.get(term.buffer.ybase + term.buffer.y);
+      const promptLine = term.buffer.lines.get(term.buffer.ybase + term.buffer.y);
      term.clear();
      assert.equal(term.buffer.y, 0);
      assert.equal(term.buffer.ybase, 0);
@@ -129,7 +142,7 @@ describe('term.js addons', () => {
      assert.equal(term.buffer.lines.length, term.rows);
      assert.deepEqual(term.buffer.lines.get(0), promptLine);
      for (let i = 1; i < term.rows; i++) {
-        assert.deepEqual(term.buffer.lines.get(i), term.blankLine());
+        assert.deepEqual(term.buffer.lines.get(i), BufferLine.blankLine(term.cols, DEFAULT_ATTR));
      }
    });
    it('should clear a buffer larger than rows', () => {
@@ -138,7 +151,7 @@ describe('term.js addons', () => {
        term.write('test\n');
      }

-      let promptLine = term.buffer.lines.get(term.buffer.ybase + term.buffer.y);
+      const promptLine = term.buffer.lines.get(term.buffer.ybase + term.buffer.y);
      term.clear();
      assert.equal(term.buffer.y, 0);
      assert.equal(term.buffer.ybase, 0);
@@ -146,11 +159,11 @@ describe('term.js addons', () => {
      assert.equal(term.buffer.lines.length, term.rows);
      assert.deepEqual(term.buffer.lines.get(0), promptLine);
      for (let i = 1; i < term.rows; i++) {
-        assert.deepEqual(term.buffer.lines.get(i), term.blankLine());
+        assert.deepEqual(term.buffer.lines.get(i), BufferLine.blankLine(term.cols, DEFAULT_ATTR));
      }
    });
    it('should not break the prompt when cleared twice', () => {
-      let promptLine = term.buffer.lines.get(term.buffer.ybase + term.buffer.y);
+      const promptLine = term.buffer.lines.get(term.buffer.ybase + term.buffer.y);
      term.clear();
      term.clear();
      assert.equal(term.buffer.y, 0);
@@ -159,14 +172,14 @@ describe('term.js addons', () => {
      assert.equal(term.buffer.lines.length, term.rows);
      assert.deepEqual(term.buffer.lines.get(0), promptLine);
      for (let i = 1; i < term.rows; i++) {
-        assert.deepEqual(term.buffer.lines.get(i), term.blankLine());
+        assert.deepEqual(term.buffer.lines.get(i), BufferLine.blankLine(term.cols, DEFAULT_ATTR));
      }
    });
  });

  describe('scroll', () => {
    describe('scrollLines', () => {
-      let startYDisp;
+      let startYDisp: number;
      beforeEach(() => {
        for (let i = 0; i < term.rows * 2; i++) {
          term.writeln('test');
@@ -201,7 +214,7 @@ describe('term.js addons', () => {
    });

    describe('scrollPages', () => {
-      let startYDisp;
+      let startYDisp: number;
      beforeEach(() => {
        for (let i = 0; i < term.rows * 3; i++) {
          term.writeln('test');
@@ -238,7 +251,7 @@ describe('term.js addons', () => {
    });

    describe('scrollToBottom', () => {
-      let startYDisp;
+      let startYDisp: number;
      beforeEach(() => {
        for (let i = 0; i < term.rows * 3; i++) {
          term.writeln('test');
@@ -258,22 +271,47 @@ describe('term.js addons', () => {
      });
    });

-    describe('keyDown', () => {
+    describe('scrollToLine', () => {
+      let startYDisp: number;
+      beforeEach(() => {
+        for (let i = 0; i < term.rows * 3; i++) {
+          term.writeln('test');
+        }
+        startYDisp = (term.rows * 2) + 1;
+      });
+      it('should scroll to requested line', () => {
+        assert.equal(term.buffer.ydisp, startYDisp);
+        term.scrollToLine(0);
+        assert.equal(term.buffer.ydisp, 0);
+        term.scrollToLine(10);
+        assert.equal(term.buffer.ydisp, 10);
+        term.scrollToLine(startYDisp);
+        assert.equal(term.buffer.ydisp, startYDisp);
+        term.scrollToLine(20);
+        assert.equal(term.buffer.ydisp, 20);
+      });
+      it('should not scroll beyond boundary lines', () => {
+        assert.equal(term.buffer.ydisp, startYDisp);
+        term.scrollToLine(-1);
+        assert.equal(term.buffer.ydisp, 0);
+        term.scrollToLine(startYDisp + 1);
+        assert.equal(term.buffer.ydisp, startYDisp);
+      });
+    });
+
+    describe('keyPress', () => {
      it('should scroll down, when a key is pressed and terminal is scrolled up', () => {
-        // Override _evaluateKeyEscapeSequence to return cancel code
-        (<any>term)._evaluateKeyEscapeSequence = () => {
-          return { key: 'a' };
-        };
-        let event = <KeyboardEvent>{
+        const event = <KeyboardEvent>{
          type: 'keydown',
-          keyCode: 0,
+          key: 'a',
+          keyCode: 65,
          preventDefault: () => {},
          stopPropagation: () => {}
        };

        term.buffer.ydisp = 0;
        term.buffer.ybase = 40;
-        term.keyDown(event);
+        term.keyPress(event);

        // Ensure that now the terminal is scrolled to bottom
        assert.equal(term.buffer.ydisp, term.buffer.ybase);
@@ -284,7 +322,7 @@ describe('term.js addons', () => {
        for (let i = 0; i < term.rows * 3; i++) {
          term.writeln('test');
        }
-        let startYDisp = (term.rows * 2) + 1;
+        const startYDisp = (term.rows * 2) + 1;
        term.attachCustomKeyEventHandler(() => {
          return false;
        });
@@ -292,7 +330,7 @@ describe('term.js addons', () => {
        assert.equal(term.buffer.ydisp, startYDisp);
        term.scrollLines(-1);
        assert.equal(term.buffer.ydisp, startYDisp - 1);
-        term.keyDown(<KeyboardEvent>{ keyCode: 0 });
+        term.keyPress(<KeyboardEvent>{ keyCode: 0 });
        assert.equal(term.buffer.ydisp, startYDisp - 1);
      });
    });
@@ -300,62 +338,62 @@ describe('term.js addons', () => {
    describe('scroll() function', () => {
      describe('when scrollback > 0', () => {
        it('should create a new line and scroll', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(INIT_ROWS - 1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(INIT_ROWS - 1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
          term.buffer.y = INIT_ROWS - 1; // Move cursor to last line
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS + 1);
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'a');
-          assert.equal(term.buffer.lines.get(INIT_ROWS - 1)[0][CHAR_DATA_CHAR_INDEX], 'b');
-          assert.equal(term.buffer.lines.get(INIT_ROWS)[0][CHAR_DATA_CHAR_INDEX], ' ');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'a');
+          assert.equal(term.buffer.lines.get(INIT_ROWS - 1).get(0)[CHAR_DATA_CHAR_INDEX], 'b');
+          assert.equal(term.buffer.lines.get(INIT_ROWS).get(0)[CHAR_DATA_CHAR_INDEX], ' ');
        });

        it('should properly scroll inside a scroll region (scrollTop set)', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
-          term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX] = 'c';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX] = 'c';
          term.buffer.y = INIT_ROWS - 1; // Move cursor to last line
          term.buffer.scrollTop = 1;
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS);
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'a');
-          assert.equal(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX], 'c');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'a');
+          assert.equal(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX], 'c');
        });

        it('should properly scroll inside a scroll region (scrollBottom set)', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
-          term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX] = 'c';
-          term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX] = 'd';
-          term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX] = 'e';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX] = 'c';
+          term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX] = 'd';
+          term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX] = 'e';
          term.buffer.y = 3;
          term.buffer.scrollBottom = 3;
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS + 1);
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'a', '\'a\' should be pushed to the scrollback');
-          assert.equal(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX], 'b');
-          assert.equal(term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX], 'c');
-          assert.equal(term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX], 'd');
-          assert.equal(term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
-          assert.equal(term.buffer.lines.get(5)[0][CHAR_DATA_CHAR_INDEX], 'e');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'a', '\'a\' should be pushed to the scrollback');
+          assert.equal(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX], 'b');
+          assert.equal(term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX], 'c');
+          assert.equal(term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX], 'd');
+          assert.equal(term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
+          assert.equal(term.buffer.lines.get(5).get(0)[CHAR_DATA_CHAR_INDEX], 'e');
        });

        it('should properly scroll inside a scroll region (scrollTop and scrollBottom set)', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
-          term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX] = 'c';
-          term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX] = 'd';
-          term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX] = 'e';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX] = 'c';
+          term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX] = 'd';
+          term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX] = 'e';
          term.buffer.y = INIT_ROWS - 1; // Move cursor to last line
          term.buffer.scrollTop = 1;
          term.buffer.scrollBottom = 3;
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS);
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'a');
-          assert.equal(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX], 'c', '\'b\' should be removed from the buffer');
-          assert.equal(term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX], 'd');
-          assert.equal(term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
-          assert.equal(term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX], 'e');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'a');
+          assert.equal(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX], 'c', '\'b\' should be removed from the buffer');
+          assert.equal(term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX], 'd');
+          assert.equal(term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
+          assert.equal(term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX], 'e');
        });
      });

@@ -366,207 +404,73 @@ describe('term.js addons', () => {
        });

        it('should create a new line and shift everything up', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
-          term.buffer.lines.get(INIT_ROWS - 1)[0][CHAR_DATA_CHAR_INDEX] = 'c';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(INIT_ROWS - 1).get(0)[CHAR_DATA_CHAR_INDEX] = 'c';
          term.buffer.y = INIT_ROWS - 1; // Move cursor to last line
          assert.equal(term.buffer.lines.length, INIT_ROWS);
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS);
          // 'a' gets pushed out of buffer
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'b');
-          assert.equal(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX], ' ');
-          assert.equal(term.buffer.lines.get(INIT_ROWS - 2)[0][CHAR_DATA_CHAR_INDEX], 'c');
-          assert.equal(term.buffer.lines.get(INIT_ROWS - 1)[0][CHAR_DATA_CHAR_INDEX], ' ');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'b');
+          assert.equal(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX], ' ');
+          assert.equal(term.buffer.lines.get(INIT_ROWS - 2).get(0)[CHAR_DATA_CHAR_INDEX], 'c');
+          assert.equal(term.buffer.lines.get(INIT_ROWS - 1).get(0)[CHAR_DATA_CHAR_INDEX], ' ');
        });

        it('should properly scroll inside a scroll region (scrollTop set)', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
-          term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX] = 'c';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX] = 'c';
          term.buffer.y = INIT_ROWS - 1; // Move cursor to last line
          term.buffer.scrollTop = 1;
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS);
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'a');
-          assert.equal(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX], 'c');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'a');
+          assert.equal(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX], 'c');
        });

        it('should properly scroll inside a scroll region (scrollBottom set)', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
-          term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX] = 'c';
-          term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX] = 'd';
-          term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX] = 'e';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX] = 'c';
+          term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX] = 'd';
+          term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX] = 'e';
          term.buffer.y = 3;
          term.buffer.scrollBottom = 3;
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS);
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'b');
-          assert.equal(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX], 'c');
-          assert.equal(term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX], 'd');
-          assert.equal(term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
-          assert.equal(term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX], 'e');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'b');
+          assert.equal(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX], 'c');
+          assert.equal(term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX], 'd');
+          assert.equal(term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
+          assert.equal(term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX], 'e');
        });

        it('should properly scroll inside a scroll region (scrollTop and scrollBottom set)', () => {
-          term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX] = 'a';
-          term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX] = 'b';
-          term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX] = 'c';
-          term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX] = 'd';
-          term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX] = 'e';
+          term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX] = 'a';
+          term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX] = 'b';
+          term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX] = 'c';
+          term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX] = 'd';
+          term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX] = 'e';
          term.buffer.y = INIT_ROWS - 1; // Move cursor to last line
          term.buffer.scrollTop = 1;
          term.buffer.scrollBottom = 3;
          term.scroll();
          assert.equal(term.buffer.lines.length, INIT_ROWS);
-          assert.equal(term.buffer.lines.get(0)[0][CHAR_DATA_CHAR_INDEX], 'a');
-          assert.equal(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX], 'c', '\'b\' should be removed from the buffer');
-          assert.equal(term.buffer.lines.get(2)[0][CHAR_DATA_CHAR_INDEX], 'd');
-          assert.equal(term.buffer.lines.get(3)[0][CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
-          assert.equal(term.buffer.lines.get(4)[0][CHAR_DATA_CHAR_INDEX], 'e');
+          assert.equal(term.buffer.lines.get(0).get(0)[CHAR_DATA_CHAR_INDEX], 'a');
+          assert.equal(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX], 'c', '\'b\' should be removed from the buffer');
+          assert.equal(term.buffer.lines.get(2).get(0)[CHAR_DATA_CHAR_INDEX], 'd');
+          assert.equal(term.buffer.lines.get(3).get(0)[CHAR_DATA_CHAR_INDEX], ' ', 'a blank line should be added at scrollBottom\'s index');
+          assert.equal(term.buffer.lines.get(4).get(0)[CHAR_DATA_CHAR_INDEX], 'e');
        });
      });
    });
  });

-  describe('evaluateKeyEscapeSequence', () => {
-    it('should return the correct escape sequence for unmodified keys', () => {
-      // Backspace
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 8 }).key, '\x7f'); // ^?
-      // Tab
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 9 }).key, '\t');
-      // Return/enter
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 13 }).key, '\r'); // CR
-      // Escape
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 27 }).key, '\x1b');
-      // Page up, page down
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 33 }).key, '\x1b[5~'); // CSI 5 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 34 }).key, '\x1b[6~'); // CSI 6 ~
-      // End, Home
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 35 }).key, '\x1b[F'); // SS3 F
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 36 }).key, '\x1b[H'); // SS3 H
-      // Left, up, right, down arrows
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 37 }).key, '\x1b[D'); // CSI D
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 38 }).key, '\x1b[A'); // CSI A
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 39 }).key, '\x1b[C'); // CSI C
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 40 }).key, '\x1b[B'); // CSI B
-      // Insert
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 45 }).key, '\x1b[2~'); // CSI 2 ~
-      // Delete
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 46 }).key, '\x1b[3~'); // CSI 3 ~
-      // F1-F12
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 112 }).key, '\x1bOP'); // SS3 P
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 113 }).key, '\x1bOQ'); // SS3 Q
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 114 }).key, '\x1bOR'); // SS3 R
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 115 }).key, '\x1bOS'); // SS3 S
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 116 }).key, '\x1b[15~'); // CSI 1 5 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 117 }).key, '\x1b[17~'); // CSI 1 7 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 118 }).key, '\x1b[18~'); // CSI 1 8 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 119 }).key, '\x1b[19~'); // CSI 1 9 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 120 }).key, '\x1b[20~'); // CSI 2 0 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 121 }).key, '\x1b[21~'); // CSI 2 1 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 122 }).key, '\x1b[23~'); // CSI 2 3 ~
-      assert.equal(term.evaluateKeyEscapeSequence({ keyCode: 123 }).key, '\x1b[24~'); // CSI 2 4 ~
-    });
-    it('should return \\x1b[3;5~ for ctrl+delete', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 46 }).key, '\x1b[3;5~');
-    });
-    it('should return \\x1b[3;2~ for shift+delete', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 46 }).key, '\x1b[3;2~');
-    });
-    it('should return \\x1b[3;3~ for alt+delete', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 46 }).key, '\x1b[3;3~');
-    });
-    it('should return \\x1b[5D for ctrl+left', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 37 }).key, '\x1b[1;5D'); // CSI 5 D
-    });
-    it('should return \\x1b[5C for ctrl+right', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 39 }).key, '\x1b[1;5C'); // CSI 5 C
-    });
-    it('should return \\x1b[5A for ctrl+up', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 38 }).key, '\x1b[1;5A'); // CSI 5 A
-    });
-    it('should return \\x1b[5B for ctrl+down', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 40 }).key, '\x1b[1;5B'); // CSI 5 B
-    });
-
-    describe('On non-macOS platforms', () => {
-      beforeEach(() => {
-        term.browser.isMac = false;
-      });
-      // Evalueate alt + arrow key movement, which is a feature of terminal emulators but not VT100
-      // http://unix.stackexchange.com/a/108106
-      it('should return \\x1b[5D for alt+left', () => {
-        assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 37 }).key, '\x1b[1;5D'); // CSI 5 D
-      });
-      it('should return \\x1b[5C for alt+right', () => {
-        assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 39 }).key, '\x1b[1;5C'); // CSI 5 C
-      });
-    });
-
-    describe('On macOS platforms', () => {
-      beforeEach(() => {
-        term.browser.isMac = true;
-      });
-      it('should return \\x1bb for alt+left', () => {
-        assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 37 }).key, '\x1bb'); // CSI 5 D
-      });
-      it('should return \\x1bf for alt+right', () => {
-        assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 39 }).key, '\x1bf'); // CSI 5 C
-      });
-    });
-
-    it('should return \\x1b[5A for alt+up', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 38 }).key, '\x1b[1;5A'); // CSI 5 A
-    });
-    it('should return \\x1b[5B for alt+down', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 40 }).key, '\x1b[1;5B'); // CSI 5 B
-    });
-    it('should return the correct escape sequence for modified F1-F12 keys', () => {
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 112 }).key, '\x1b[1;2P');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 113 }).key, '\x1b[1;2Q');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 114 }).key, '\x1b[1;2R');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 115 }).key, '\x1b[1;2S');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 116 }).key, '\x1b[15;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 117 }).key, '\x1b[17;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 118 }).key, '\x1b[18;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 119 }).key, '\x1b[19;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 120 }).key, '\x1b[20;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 121 }).key, '\x1b[21;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 122 }).key, '\x1b[23;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ shiftKey: true, keyCode: 123 }).key, '\x1b[24;2~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 112 }).key, '\x1b[1;3P');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 113 }).key, '\x1b[1;3Q');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 114 }).key, '\x1b[1;3R');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 115 }).key, '\x1b[1;3S');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 116 }).key, '\x1b[15;3~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 117 }).key, '\x1b[17;3~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 118 }).key, '\x1b[18;3~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 119 }).key, '\x1b[19;3~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 120 }).key, '\x1b[20;3~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 121 }).key, '\x1b[21;3~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 122 }).key, '\x1b[23;3~');
-      assert.equal(term.evaluateKeyEscapeSequence({ altKey: true, keyCode: 123 }).key, '\x1b[24;3~');
-
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 112 }).key, '\x1b[1;5P');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 113 }).key, '\x1b[1;5Q');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 114 }).key, '\x1b[1;5R');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 115 }).key, '\x1b[1;5S');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 116 }).key, '\x1b[15;5~');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 117 }).key, '\x1b[17;5~');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 118 }).key, '\x1b[18;5~');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 119 }).key, '\x1b[19;5~');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 120 }).key, '\x1b[20;5~');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 121 }).key, '\x1b[21;5~');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 122 }).key, '\x1b[23;5~');
-      assert.equal(term.evaluateKeyEscapeSequence({ ctrlKey: true, keyCode: 123 }).key, '\x1b[24;5~');
-    });
-  });
-
  describe('Third level shift', () => {
-    let evKeyDown;
-    let evKeyPress;
+    let evKeyDown: any;
+    let evKeyPress: any;

    beforeEach(() => {
      term.handler = () => {};
@@ -597,6 +501,22 @@ describe('term.js addons', () => {
      };
    });

+    describe('with macOptionIsMeta', () => {
+      beforeEach(() => {
+        term.browser.isMac = true;
+        term.setOption('macOptionIsMeta', true);
+      });
+
+      it('should interfere with the alt key on keyDown', () => {
+        evKeyDown.altKey = true;
+        evKeyDown.keyCode = 81;
+        assert.equal(term.keyDown(evKeyDown), false);
+        evKeyDown.altKey = true;
+        evKeyDown.keyCode = 192;
+        assert.equal(term.keyDown(evKeyDown), false);
+      });
+    });
+
    describe('On Mac OS', () => {
      beforeEach(() => {
        term.browser.isMac = true;
@@ -621,11 +541,11 @@ describe('term.js addons', () => {
      });

      it('should emit key with alt + key on keyPress', (done) => {
-        let keys = ['@', '@', '\\', '\\', '|', '|'];
+        const keys = ['@', '@', '\\', '\\', '|', '|'];

        term.on('keypress', (key) => {
          if (key) {
-            let index = keys.indexOf(key);
+            const index = keys.indexOf(key);
            assert(index !== -1, 'Emitted wrong key: ' + key);
            keys.splice(index, 1);
          }
@@ -687,11 +607,11 @@ describe('term.js addons', () => {
      });

      it('should emit key with alt + ctrl + key on keyPress', (done) => {
-        let keys = ['@', '@', '\\', '\\', '|', '|'];
+        const keys = ['@', '@', '\\', '\\', '|', '|'];

        term.on('keypress', (key) => {
          if (key) {
-            let index = keys.indexOf(key);
+            const index = keys.indexOf(key);
            assert(index !== -1, 'Emitted wrong key: ' + key);
            keys.splice(index, 1);
          }
@@ -732,64 +652,64 @@ describe('term.js addons', () => {
  describe('unicode - surrogates', () => {
    it('2 characters per cell', function (): void {
      this.timeout(10000);  // This is needed because istanbul patches code and slows it down
-      let high = String.fromCharCode(0xD800);
+      const high = String.fromCharCode(0xD800);
      for (let i = 0xDC00; i <= 0xDCFF; ++i) {
        term.write(high + String.fromCharCode(i));
-        let tchar = term.buffer.lines.get(0)[0];
+        const tchar = term.buffer.lines.get(0).get(0);
        expect(tchar[CHAR_DATA_CHAR_INDEX]).eql(high + String.fromCharCode(i));
        expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(2);
        expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
-        expect(term.buffer.lines.get(0)[1][CHAR_DATA_CHAR_INDEX]).eql(' ');
+        expect(term.buffer.lines.get(0).get(1)[CHAR_DATA_CHAR_INDEX]).eql(' ');
        term.reset();
      }
    });
    it('2 characters at last cell', () => {
-      let high = String.fromCharCode(0xD800);
+      const high = String.fromCharCode(0xD800);
      for (let i = 0xDC00; i <= 0xDCFF; ++i) {
        term.buffer.x = term.cols - 1;
        term.write(high + String.fromCharCode(i));
-        expect(term.buffer.lines.get(0)[term.buffer.x - 1][CHAR_DATA_CHAR_INDEX]).eql(high + String.fromCharCode(i));
-        expect(term.buffer.lines.get(0)[term.buffer.x - 1][CHAR_DATA_CHAR_INDEX].length).eql(2);
-        expect(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX]).eql(' ');
+        expect(term.buffer.lines.get(0).get(term.buffer.x - 1)[CHAR_DATA_CHAR_INDEX]).eql(high + String.fromCharCode(i));
+        expect(term.buffer.lines.get(0).get(term.buffer.x - 1)[CHAR_DATA_CHAR_INDEX].length).eql(2);
+        expect(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX]).eql(' ');
        term.reset();
      }
    });
    it('2 characters per cell over line end with autowrap', () => {
-      let high = String.fromCharCode(0xD800);
+      const high = String.fromCharCode(0xD800);
      for (let i = 0xDC00; i <= 0xDCFF; ++i) {
        term.buffer.x = term.cols - 1;
        term.wraparoundMode = true;
        term.write('a' + high + String.fromCharCode(i));
-        expect(term.buffer.lines.get(0)[term.cols - 1][CHAR_DATA_CHAR_INDEX]).eql('a');
-        expect(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX]).eql(high + String.fromCharCode(i));
-        expect(term.buffer.lines.get(1)[0][CHAR_DATA_CHAR_INDEX].length).eql(2);
-        expect(term.buffer.lines.get(1)[1][CHAR_DATA_CHAR_INDEX]).eql(' ');
+        expect(term.buffer.lines.get(0).get(term.cols - 1)[CHAR_DATA_CHAR_INDEX]).eql('a');
+        expect(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX]).eql(high + String.fromCharCode(i));
+        expect(term.buffer.lines.get(1).get(0)[CHAR_DATA_CHAR_INDEX].length).eql(2);
+        expect(term.buffer.lines.get(1).get(1)[CHAR_DATA_CHAR_INDEX]).eql(' ');
        term.reset();
      }
    });
    it('2 characters per cell over line end without autowrap', () => {
-      let high = String.fromCharCode(0xD800);
+      const high = String.fromCharCode(0xD800);
      for (let i = 0xDC00; i <= 0xDCFF; ++i) {
        term.buffer.x = term.cols - 1;
        term.wraparoundMode = false;
        term.write('a' + high + String.fromCharCode(i));
        // auto wraparound mode should cut off the rest of the line
-        expect(term.buffer.lines.get(0)[term.cols - 1][CHAR_DATA_CHAR_INDEX]).eql('a');
-        expect(term.buffer.lines.get(0)[term.cols - 1][CHAR_DATA_CHAR_INDEX].length).eql(1);
-        expect(term.buffer.lines.get(1)[1][CHAR_DATA_CHAR_INDEX]).eql(' ');
+        expect(term.buffer.lines.get(0).get(term.cols - 1)[CHAR_DATA_CHAR_INDEX]).eql('a');
+        expect(term.buffer.lines.get(0).get(term.cols - 1)[CHAR_DATA_CHAR_INDEX].length).eql(1);
+        expect(term.buffer.lines.get(1).get(1)[CHAR_DATA_CHAR_INDEX]).eql(' ');
        term.reset();
      }
    });
    it('splitted surrogates', () => {
-      let high = String.fromCharCode(0xD800);
+      const high = String.fromCharCode(0xD800);
      for (let i = 0xDC00; i <= 0xDCFF; ++i) {
        term.write(high);
        term.write(String.fromCharCode(i));
-        let tchar = term.buffer.lines.get(0)[0];
+        const tchar = term.buffer.lines.get(0).get(0);
        expect(tchar[CHAR_DATA_CHAR_INDEX]).eql(high + String.fromCharCode(i));
        expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(2);
        expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
-        expect(term.buffer.lines.get(0)[1][CHAR_DATA_CHAR_INDEX]).eql(' ');
+        expect(term.buffer.lines.get(0).get(1)[CHAR_DATA_CHAR_INDEX]).eql(' ');
        term.reset();
      }
    });
@@ -798,30 +718,30 @@ describe('term.js addons', () => {
  describe('unicode - combining characters', () => {
    it('café', () => {
      term.write('cafe\u0301');
-      expect(term.buffer.lines.get(0)[3][CHAR_DATA_CHAR_INDEX]).eql('e\u0301');
-      expect(term.buffer.lines.get(0)[3][CHAR_DATA_CHAR_INDEX].length).eql(2);
-      expect(term.buffer.lines.get(0)[3][CHAR_DATA_WIDTH_INDEX]).eql(1);
+      expect(term.buffer.lines.get(0).get(3)[CHAR_DATA_CHAR_INDEX]).eql('e\u0301');
+      expect(term.buffer.lines.get(0).get(3)[CHAR_DATA_CHAR_INDEX].length).eql(2);
+      expect(term.buffer.lines.get(0).get(3)[CHAR_DATA_WIDTH_INDEX]).eql(1);
    });
    it('café - end of line', () => {
      term.buffer.x = term.cols - 1 - 3;
      term.write('cafe\u0301');
-      expect(term.buffer.lines.get(0)[term.cols - 1][CHAR_DATA_CHAR_INDEX]).eql('e\u0301');
-      expect(term.buffer.lines.get(0)[term.cols - 1][CHAR_DATA_CHAR_INDEX].length).eql(2);
-      expect(term.buffer.lines.get(0)[term.cols - 1][CHAR_DATA_WIDTH_INDEX]).eql(1);
-      expect(term.buffer.lines.get(0)[1][CHAR_DATA_CHAR_INDEX]).eql(' ');
-      expect(term.buffer.lines.get(0)[1][CHAR_DATA_CHAR_INDEX].length).eql(1);
-      expect(term.buffer.lines.get(0)[1][CHAR_DATA_WIDTH_INDEX]).eql(1);
+      expect(term.buffer.lines.get(0).get(term.cols - 1)[CHAR_DATA_CHAR_INDEX]).eql('e\u0301');
+      expect(term.buffer.lines.get(0).get(term.cols - 1)[CHAR_DATA_CHAR_INDEX].length).eql(2);
+      expect(term.buffer.lines.get(0).get(term.cols - 1)[CHAR_DATA_WIDTH_INDEX]).eql(1);
+      expect(term.buffer.lines.get(0).get(1)[CHAR_DATA_CHAR_INDEX]).eql(' ');
+      expect(term.buffer.lines.get(0).get(1)[CHAR_DATA_CHAR_INDEX].length).eql(1);
+      expect(term.buffer.lines.get(0).get(1)[CHAR_DATA_WIDTH_INDEX]).eql(1);
    });
    it('multiple combined é', () => {
      term.wraparoundMode = true;
      term.write(Array(100).join('e\u0301'));
      for (let i = 0; i < term.cols; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('e\u0301');
        expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(2);
        expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
      }
-      let tchar = term.buffer.lines.get(1)[0];
+      const tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('e\u0301');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(2);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
@@ -830,12 +750,12 @@ describe('term.js addons', () => {
      term.wraparoundMode = true;
      term.write(Array(100).join('\uD800\uDC00\u0301'));
      for (let i = 0; i < term.cols; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('\uD800\uDC00\u0301');
        expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(3);
        expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
      }
-      let tchar = term.buffer.lines.get(1)[0];
+      const tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('\uD800\uDC00\u0301');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(3);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
@@ -858,7 +778,7 @@ describe('term.js addons', () => {
      term.wraparoundMode = true;
      term.write(Array(50).join('￥'));
      for (let i = 0; i < term.cols; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        if (i % 2) {
          expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('');
          expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(0);
@@ -869,7 +789,7 @@ describe('term.js addons', () => {
          expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
        }
      }
-      let tchar = term.buffer.lines.get(1)[0];
+      const tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('￥');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(1);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
@@ -879,7 +799,7 @@ describe('term.js addons', () => {
      term.buffer.x = 1;
      term.write(Array(50).join('￥'));
      for (let i = 1; i < term.cols - 1; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        if (!(i % 2)) {
          expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('');
          expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(0);
@@ -890,11 +810,11 @@ describe('term.js addons', () => {
          expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
        }
      }
-      let tchar = term.buffer.lines.get(0)[term.cols - 1];
+      let tchar = term.buffer.lines.get(0).get(term.cols - 1);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql(' ');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(1);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
-      tchar = term.buffer.lines.get(1)[0];
+      tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('￥');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(1);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
@@ -904,7 +824,7 @@ describe('term.js addons', () => {
      term.buffer.x = 1;
      term.write(Array(50).join('￥\u0301'));
      for (let i = 1; i < term.cols - 1; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        if (!(i % 2)) {
          expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('');
          expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(0);
@@ -915,11 +835,11 @@ describe('term.js addons', () => {
          expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
        }
      }
-      let tchar = term.buffer.lines.get(0)[term.cols - 1];
+      let tchar = term.buffer.lines.get(0).get(term.cols - 1);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql(' ');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(1);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
-      tchar = term.buffer.lines.get(1)[0];
+      tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('￥\u0301');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(2);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
@@ -928,7 +848,7 @@ describe('term.js addons', () => {
      term.wraparoundMode = true;
      term.write(Array(50).join('￥\u0301'));
      for (let i = 0; i < term.cols; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        if (i % 2) {
          expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('');
          expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(0);
@@ -939,7 +859,7 @@ describe('term.js addons', () => {
          expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
        }
      }
-      let tchar = term.buffer.lines.get(1)[0];
+      const tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('￥\u0301');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(2);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
@@ -949,7 +869,7 @@ describe('term.js addons', () => {
      term.buffer.x = 1;
      term.write(Array(50).join('\ud843\ude6d\u0301'));
      for (let i = 1; i < term.cols - 1; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        if (!(i % 2)) {
          expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('');
          expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(0);
@@ -960,11 +880,11 @@ describe('term.js addons', () => {
          expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
        }
      }
-      let tchar = term.buffer.lines.get(0)[term.cols - 1];
+      let tchar = term.buffer.lines.get(0).get(term.cols - 1);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql(' ');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(1);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(1);
-      tchar = term.buffer.lines.get(1)[0];
+      tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('\ud843\ude6d\u0301');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(3);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
@@ -973,7 +893,7 @@ describe('term.js addons', () => {
      term.wraparoundMode = true;
      term.write(Array(50).join('\ud843\ude6d\u0301'));
      for (let i = 0; i < term.cols; ++i) {
-        let tchar = term.buffer.lines.get(0)[i];
+        const tchar = term.buffer.lines.get(0).get(i);
        if (i % 2) {
          expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('');
          expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(0);
@@ -984,7 +904,7 @@ describe('term.js addons', () => {
          expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
        }
      }
-      let tchar = term.buffer.lines.get(1)[0];
+      const tchar = term.buffer.lines.get(1).get(0);
      expect(tchar[CHAR_DATA_CHAR_INDEX]).eql('\ud843\ude6d\u0301');
      expect(tchar[CHAR_DATA_CHAR_INDEX].length).eql(3);
      expect(tchar[CHAR_DATA_WIDTH_INDEX]).eql(2);
@@ -999,10 +919,10 @@ describe('term.js addons', () => {
      term.insertMode = true;
      term.write('abcde');
      expect(term.buffer.lines.get(0).length).eql(term.cols);
-      expect(term.buffer.lines.get(0)[10][CHAR_DATA_CHAR_INDEX]).eql('a');
-      expect(term.buffer.lines.get(0)[14][CHAR_DATA_CHAR_INDEX]).eql('e');
-      expect(term.buffer.lines.get(0)[15][CHAR_DATA_CHAR_INDEX]).eql('0');
-      expect(term.buffer.lines.get(0)[79][CHAR_DATA_CHAR_INDEX]).eql('4');
+      expect(term.buffer.lines.get(0).get(10)[CHAR_DATA_CHAR_INDEX]).eql('a');
+      expect(term.buffer.lines.get(0).get(14)[CHAR_DATA_CHAR_INDEX]).eql('e');
+      expect(term.buffer.lines.get(0).get(15)[CHAR_DATA_CHAR_INDEX]).eql('0');
+      expect(term.buffer.lines.get(0).get(79)[CHAR_DATA_CHAR_INDEX]).eql('4');
    });
    it('fullwidth - insert', () => {
      term.write(Array(9).join('0123456789').slice(-80));
@@ -1011,11 +931,11 @@ describe('term.js addons', () => {
      term.insertMode = true;
      term.write('￥￥￥');
      expect(term.buffer.lines.get(0).length).eql(term.cols);
-      expect(term.buffer.lines.get(0)[10][CHAR_DATA_CHAR_INDEX]).eql('￥');
-      expect(term.buffer.lines.get(0)[11][CHAR_DATA_CHAR_INDEX]).eql('');
-      expect(term.buffer.lines.get(0)[14][CHAR_DATA_CHAR_INDEX]).eql('￥');
-      expect(term.buffer.lines.get(0)[15][CHAR_DATA_CHAR_INDEX]).eql('');
-      expect(term.buffer.lines.get(0)[79][CHAR_DATA_CHAR_INDEX]).eql('3');
+      expect(term.buffer.lines.get(0).get(10)[CHAR_DATA_CHAR_INDEX]).eql('￥');
+      expect(term.buffer.lines.get(0).get(11)[CHAR_DATA_CHAR_INDEX]).eql('');
+      expect(term.buffer.lines.get(0).get(14)[CHAR_DATA_CHAR_INDEX]).eql('￥');
+      expect(term.buffer.lines.get(0).get(15)[CHAR_DATA_CHAR_INDEX]).eql('');
+      expect(term.buffer.lines.get(0).get(79)[CHAR_DATA_CHAR_INDEX]).eql('3');
    });
    it('fullwidth - right border', () => {
      term.write(Array(41).join('￥'));
@@ -1024,14 +944,14 @@ describe('term.js addons', () => {
      term.insertMode = true;
      term.write('a');
      expect(term.buffer.lines.get(0).length).eql(term.cols);
-      expect(term.buffer.lines.get(0)[10][CHAR_DATA_CHAR_INDEX]).eql('a');
-      expect(term.buffer.lines.get(0)[11][CHAR_DATA_CHAR_INDEX]).eql('￥');
-      expect(term.buffer.lines.get(0)[79][CHAR_DATA_CHAR_INDEX]).eql(' ');  // fullwidth char got replaced
+      expect(term.buffer.lines.get(0).get(10)[CHAR_DATA_CHAR_INDEX]).eql('a');
+      expect(term.buffer.lines.get(0).get(11)[CHAR_DATA_CHAR_INDEX]).eql('￥');
+      expect(term.buffer.lines.get(0).get(79)[CHAR_DATA_CHAR_INDEX]).eql(' ');  // fullwidth char got replaced
      term.write('b');
      expect(term.buffer.lines.get(0).length).eql(term.cols);
-      expect(term.buffer.lines.get(0)[11][CHAR_DATA_CHAR_INDEX]).eql('b');
-      expect(term.buffer.lines.get(0)[12][CHAR_DATA_CHAR_INDEX]).eql('￥');
-      expect(term.buffer.lines.get(0)[79][CHAR_DATA_CHAR_INDEX]).eql('');  // empty cell after fullwidth
+      expect(term.buffer.lines.get(0).get(11)[CHAR_DATA_CHAR_INDEX]).eql('b');
+      expect(term.buffer.lines.get(0).get(12)[CHAR_DATA_CHAR_INDEX]).eql('￥');
+      expect(term.buffer.lines.get(0).get(79)[CHAR_DATA_CHAR_INDEX]).eql('');  // empty cell after fullwidth
    });
  });
 });
@@ -3,33 +3,522 @@
 * @license MIT
 */

-export type LinkMatcher = {
-  id: number,
-  regex: RegExp,
-  handler: LinkMatcherHandler,
-  hoverTooltipCallback?: LinkMatcherHandler,
-  hoverLeaveCallback?: () => void,
-  matchIndex?: number,
-  validationCallback?: LinkMatcherValidationCallback,
-  priority?: number
-};
-export type LinkMatcherHandler = (event: MouseEvent, uri: string) => boolean | void;
-export type LinkMatcherValidationCallback = (uri: string, callback: (isValid: boolean) => void) => void;
+import { Terminal as PublicTerminal, ITerminalOptions as IPublicTerminalOptions, IEventEmitter, IDisposable } from 'xterm';
+import { IColorSet, IRenderer } from './renderer/Types';
+import { IMouseZoneManager } from './ui/Types';
+import { ICharset } from './core/Types';

 export type CustomKeyEventHandler = (event: KeyboardEvent) => boolean;
-export type Charset = {[key: string]: string};
+
+export type XtermListener = (...args: any[]) => void;

 export type CharData = [number, string, number, number];
 export type LineData = CharData[];

-export type LinkHoverEvent = {
-  x: number,
-  y: number,
-  length: number
-};
+export type LinkMatcherHandler = (event: MouseEvent, uri: string) => void;
+export type LinkMatcherValidationCallback = (uri: string, callback: (isValid: boolean) => void) => void;

-export enum LinkHoverEventTypes {
+export type CharacterJoinerHandler = (text: string) => [number, number][];
+
+export const enum LinkHoverEventTypes {
  HOVER = 'linkhover',
  TOOLTIP = 'linktooltip',
  LEAVE = 'linkleave'
-};
+}
+
+/**
+ * This interface encapsulates everything needed from the Terminal by the
+ * InputHandler. This cleanly separates the large amount of methods needed by
+ * InputHandler cleanly from the ITerminal interface.
+ */
+export interface IInputHandlingTerminal extends IEventEmitter {
+  element: HTMLElement;
+  options: ITerminalOptions;
+  cols: number;
+  rows: number;
+  charset: ICharset;
+  gcharset: number;
+  glevel: number;
+  charsets: ICharset[];
+  applicationKeypad: boolean;
+  applicationCursor: boolean;
+  originMode: boolean;
+  insertMode: boolean;
+  wraparoundMode: boolean;
+  bracketedPasteMode: boolean;
+  curAttr: number;
+  savedCurAttr: number;
+  savedCols: number;
+  x10Mouse: boolean;
+  vt200Mouse: boolean;
+  normalMouse: boolean;
+  mouseEvents: boolean;
+  sendFocus: boolean;
+  utfMouse: boolean;
+  sgrMouse: boolean;
+  urxvtMouse: boolean;
+  cursorHidden: boolean;
+
+  buffers: IBufferSet;
+  buffer: IBuffer;
+  viewport: IViewport;
+  selectionManager: ISelectionManager;
+
+  bell(): void;
+  focus(): void;
+  updateRange(y: number): void;
+  scroll(isWrapped?: boolean): void;
+  setgLevel(g: number): void;
+  eraseAttr(): number;
+  is(term: string): boolean;
+  setgCharset(g: number, charset: ICharset): void;
+  resize(x: number, y: number): void;
+  log(text: string, data?: any): void;
+  reset(): void;
+  showCursor(): void;
+  refresh(start: number, end: number): void;
+  matchColor(r1: number, g1: number, b1: number): number;
+  error(text: string, data?: any): void;
+  setOption(key: string, value: any): void;
+  tabSet(): void;
+  handler(data: string): void;
+  handleTitle(title: string): void;
+  index(): void;
+  reverseIndex(): void;
+}
+
+export interface IViewport extends IDisposable {
+  scrollBarWidth: number;
+  syncScrollArea(): void;
+  getLinesScrolled(ev: WheelEvent): number;
+  onWheel(ev: WheelEvent): void;
+  onTouchStart(ev: TouchEvent): void;
+  onTouchMove(ev: TouchEvent): void;
+  onThemeChanged(colors: IColorSet): void;
+}
+
+export interface ICompositionHelper {
+  compositionstart(): void;
+  compositionupdate(ev: CompositionEvent): void;
+  compositionend(): void;
+  updateCompositionElements(dontRecurse?: boolean): void;
+  keydown(ev: KeyboardEvent): boolean;
+}
+
+/**
+ * Calls the parser and handles actions generated by the parser.
+ */
+export interface IInputHandler {
+  parse(data: string): void;
+  print(data: string, start: number, end: number): void;
+
+  /** C0 BEL */ bell(): void;
+  /** C0 LF */ lineFeed(): void;
+  /** C0 CR */ carriageReturn(): void;
+  /** C0 BS */ backspace(): void;
+  /** C0 HT */ tab(): void;
+  /** C0 SO */ shiftOut(): void;
+  /** C0 SI */ shiftIn(): void;
+
+  /** CSI @ */ insertChars(params?: number[]): void;
+  /** CSI A */ cursorUp(params?: number[]): void;
+  /** CSI B */ cursorDown(params?: number[]): void;
+  /** CSI C */ cursorForward(params?: number[]): void;
+  /** CSI D */ cursorBackward(params?: number[]): void;
+  /** CSI E */ cursorNextLine(params?: number[]): void;
+  /** CSI F */ cursorPrecedingLine(params?: number[]): void;
+  /** CSI G */ cursorCharAbsolute(params?: number[]): void;
+  /** CSI H */ cursorPosition(params?: number[]): void;
+  /** CSI I */ cursorForwardTab(params?: number[]): void;
+  /** CSI J */ eraseInDisplay(params?: number[]): void;
+  /** CSI K */ eraseInLine(params?: number[]): void;
+  /** CSI L */ insertLines(params?: number[]): void;
+  /** CSI M */ deleteLines(params?: number[]): void;
+  /** CSI P */ deleteChars(params?: number[]): void;
+  /** CSI S */ scrollUp(params?: number[]): void;
+  /** CSI T */ scrollDown(params?: number[], collect?: string): void;
+  /** CSI X */ eraseChars(params?: number[]): void;
+  /** CSI Z */ cursorBackwardTab(params?: number[]): void;
+  /** CSI ` */ charPosAbsolute(params?: number[]): void;
+  /** CSI a */ hPositionRelative(params?: number[]): void;
+  /** CSI b */ repeatPrecedingCharacter(params?: number[]): void;
+  /** CSI c */ sendDeviceAttributes(params?: number[], collect?: string): void;
+  /** CSI d */ linePosAbsolute(params?: number[]): void;
+  /** CSI e */ vPositionRelative(params?: number[]): void;
+  /** CSI f */ hVPosition(params?: number[]): void;
+  /** CSI g */ tabClear(params?: number[]): void;
+  /** CSI h */ setMode(params?: number[], collect?: string): void;
+  /** CSI l */ resetMode(params?: number[], collect?: string): void;
+  /** CSI m */ charAttributes(params?: number[]): void;
+  /** CSI n */ deviceStatus(params?: number[], collect?: string): void;
+  /** CSI p */ softReset(params?: number[], collect?: string): void;
+  /** CSI q */ setCursorStyle(params?: number[], collect?: string): void;
+  /** CSI r */ setScrollRegion(params?: number[], collect?: string): void;
+  /** CSI s */ saveCursor(params?: number[]): void;
+  /** CSI u */ restoreCursor(params?: number[]): void;
+  /** OSC 0
+      OSC 2 */ setTitle(data: string): void;
+  /** ESC E */ nextLine(): void;
+  /** ESC = */ keypadApplicationMode(): void;
+  /** ESC > */ keypadNumericMode(): void;
+  /** ESC % G
+      ESC % @ */ selectDefaultCharset(): void;
+  /** ESC ( C
+      ESC ) C
+      ESC * C
+      ESC + C
+      ESC - C
+      ESC . C
+      ESC / C */ selectCharset(collectAndFlag: string): void;
+  /** ESC D */ index(): void;
+  /** ESC H */ tabSet(): void;
+  /** ESC M */ reverseIndex(): void;
+  /** ESC c */ reset(): void;
+  /** ESC n
+      ESC o
+      ESC |
+      ESC }
+      ESC ~ */ setgLevel(level: number): void;
+}
+
+export interface ILinkMatcher {
+  id: number;
+  regex: RegExp;
+  handler: LinkMatcherHandler;
+  hoverTooltipCallback?: LinkMatcherHandler;
+  hoverLeaveCallback?: () => void;
+  matchIndex?: number;
+  validationCallback?: LinkMatcherValidationCallback;
+  priority?: number;
+  willLinkActivate?: (event: MouseEvent, uri: string) => boolean;
+}
+
+export interface ILinkHoverEvent {
+  x1: number;
+  y1: number;
+  x2: number;
+  y2: number;
+  cols: number;
+  fg: number;
+}
+
+export interface ITerminal extends PublicTerminal, IElementAccessor, IBufferAccessor, ILinkifierAccessor {
+  screenElement: HTMLElement;
+  selectionManager: ISelectionManager;
+  charMeasure: ICharMeasure;
+  renderer: IRenderer;
+  browser: IBrowser;
+  writeBuffer: string[];
+  cursorHidden: boolean;
+  cursorState: number;
+  options: ITerminalOptions;
+  buffer: IBuffer;
+  buffers: IBufferSet;
+  isFocused: boolean;
+  mouseHelper: IMouseHelper;
+  viewport: IViewport;
+  bracketedPasteMode: boolean;
+  applicationCursor: boolean;
+
+  /**
+   * Emit the 'data' event and populate the given data.
+   * @param data The data to populate in the event.
+   */
+  handler(data: string): void;
+  scrollLines(disp: number, suppressScrollEvent?: boolean): void;
+  cancel(ev: Event, force?: boolean): boolean | void;
+  log(text: string): void;
+  showCursor(): void;
+}
+
+export interface IBufferAccessor {
+  buffer: IBuffer;
+}
+
+export interface IElementAccessor {
+  element: HTMLElement;
+}
+
+export interface ILinkifierAccessor {
+  linkifier: ILinkifier;
+}
+
+export interface IMouseHelper {
+  getCoords(event: { pageX: number, pageY: number }, element: HTMLElement, charMeasure: ICharMeasure, lineHeight: number, colCount: number, rowCount: number, isSelection?: boolean): [number, number];
+  getRawByteCoords(event: MouseEvent, element: HTMLElement, charMeasure: ICharMeasure, lineHeight: number, colCount: number, rowCount: number): { x: number, y: number };
+}
+
+export interface ICharMeasure {
+  width: number;
+  height: number;
+  measure(options: ITerminalOptions): void;
+}
+
+// TODO: The options that are not in the public API should be reviewed
+export interface ITerminalOptions extends IPublicTerminalOptions {
+  [key: string]: any;
+  cancelEvents?: boolean;
+  convertEol?: boolean;
+  debug?: boolean;
+  handler?: (data: string) => void;
+  screenKeys?: boolean;
+  termName?: string;
+  useFlowControl?: boolean;
+}
+
+export interface IBuffer {
+  readonly lines: ICircularList<IBufferLine>;
+  ydisp: number;
+  ybase: number;
+  y: number;
+  x: number;
+  tabs: any;
+  scrollBottom: number;
+  scrollTop: number;
+  hasScrollback: boolean;
+  savedY: number;
+  savedX: number;
+  isCursorInViewport: boolean;
+  translateBufferLineToString(lineIndex: number, trimRight: boolean, startCol?: number, endCol?: number): string;
+  getWrappedRangeForLine(y: number): { first: number, last: number };
+  nextStop(x?: number): number;
+  prevStop(x?: number): number;
+}
+
+export interface IBufferSet extends IEventEmitter {
+  alt: IBuffer;
+  normal: IBuffer;
+  active: IBuffer;
+
+  activateNormalBuffer(): void;
+  activateAltBuffer(): void;
+}
+
+export interface ICircularList<T> extends IEventEmitter {
+  length: number;
+  maxLength: number;
+
+  get(index: number): T;
+  set(index: number, value: T): void;
+  push(value: T): void;
+  pop(): T;
+  splice(start: number, deleteCount: number, ...items: T[]): void;
+  trimStart(count: number): void;
+  shiftElements(start: number, count: number, offset: number): void;
+}
+
+export interface ISelectionManager {
+  selectionText: string;
+  selectionStart: [number, number];
+  selectionEnd: [number, number];
+
+  disable(): void;
+  enable(): void;
+  setSelection(row: number, col: number, length: number): void;
+  isClickInSelection(event: MouseEvent): boolean;
+  selectWordAtCursor(event: MouseEvent): void;
+}
+
+export interface ILinkifier extends IEventEmitter {
+  attachToDom(mouseZoneManager: IMouseZoneManager): void;
+  linkifyRows(start: number, end: number): void;
+  registerLinkMatcher(regex: RegExp, handler: LinkMatcherHandler, options?: ILinkMatcherOptions): number;
+  deregisterLinkMatcher(matcherId: number): boolean;
+}
+
+export interface ILinkMatcherOptions {
+  /**
+   * The index of the link from the regex.match(text) call. This defaults to 0
+   * (for regular expressions without capture groups).
+   */
+  matchIndex?: number;
+  /**
+   * A callback that validates an individual link, returning true if valid and
+   * false if invalid.
+   */
+  validationCallback?: LinkMatcherValidationCallback;
+  /**
+   * A callback that fires when the mouse hovers over a link.
+   */
+  tooltipCallback?: LinkMatcherHandler;
+  /**
+   * A callback that fires when the mouse leaves a link that was hovered.
+   */
+  leaveCallback?: () => void;
+  /**
+   * The priority of the link matcher, this defines the order in which the link
+   * matcher is evaluated relative to others, from highest to lowest. The
+   * default value is 0.
+   */
+  priority?: number;
+  /**
+   * A callback that fires when the mousedown and click events occur that
+   * determines whether a link will be activated upon click. This enables
+   * only activating a link when a certain modifier is held down, if not the
+   * mouse event will continue propagation (eg. double click to select word).
+   */
+  willLinkActivate?: (event: MouseEvent, uri: string) => boolean;
+}
+
+export interface IBrowser {
+  isNode: boolean;
+  userAgent: string;
+  platform: string;
+  isFirefox: boolean;
+  isMSIE: boolean;
+  isMac: boolean;
+  isIpad: boolean;
+  isIphone: boolean;
+  isMSWindows: boolean;
+}
+
+export interface ISoundManager {
+  playBellSound(): void;
+}
+
+/**
+ * Internal states of EscapeSequenceParser.
+ */
+export const enum ParserState {
+  GROUND = 0,
+  ESCAPE = 1,
+  ESCAPE_INTERMEDIATE = 2,
+  CSI_ENTRY = 3,
+  CSI_PARAM = 4,
+  CSI_INTERMEDIATE = 5,
+  CSI_IGNORE = 6,
+  SOS_PM_APC_STRING = 7,
+  OSC_STRING = 8,
+  DCS_ENTRY = 9,
+  DCS_PARAM = 10,
+  DCS_IGNORE = 11,
+  DCS_INTERMEDIATE = 12,
+  DCS_PASSTHROUGH = 13
+}
+
+/**
+* Internal actions of EscapeSequenceParser.
+*/
+export const enum ParserAction {
+  IGNORE = 0,
+  ERROR = 1,
+  PRINT = 2,
+  EXECUTE = 3,
+  OSC_START = 4,
+  OSC_PUT = 5,
+  OSC_END = 6,
+  CSI_DISPATCH = 7,
+  PARAM = 8,
+  COLLECT = 9,
+  ESC_DISPATCH = 10,
+  CLEAR = 11,
+  DCS_HOOK = 12,
+  DCS_PUT = 13,
+  DCS_UNHOOK = 14
+}
+
+/**
+ * Internal state of EscapeSequenceParser.
+ * Used as argument of the error handler to allow
+ * introspection at runtime on parse errors.
+ * Return it with altered values to recover from
+ * faulty states (not yet supported).
+ * Set `abort` to `true` to abort the current parsing.
+ */
+export interface IParsingState {
+  // position in parse string
+  position: number;
+  // actual character code
+  code: number;
+  // current parser state
+  currentState: ParserState;
+  // print buffer start index (-1 for not set)
+  print: number;
+  // dcs buffer start index (-1 for not set)
+  dcs: number;
+  // osc string buffer
+  osc: string;
+  // collect buffer with intermediate characters
+  collect: string;
+  // params buffer
+  params: number[];
+  // should abort (default: false)
+  abort: boolean;
+}
+
+/**
+* DCS handler signature for EscapeSequenceParser.
+* EscapeSequenceParser handles DCS commands via separate
+* subparsers that get hook/unhooked and can handle
+* arbitrary amount of print data.
+* On entering a DSC sequence `hook` is called by
+* `EscapeSequenceParser`. Use it to initialize or reset
+* states needed to handle the current DCS sequence.
+* EscapeSequenceParser will call `put` several times if the
+* parsed string got splitted, therefore you might have to collect
+* `data` until `unhook` is called. `unhook` marks the end
+* of the current DCS sequence.
+*/
+export interface IDcsHandler {
+  hook(collect: string, params: number[], flag: number): void;
+  put(data: string, start: number, end: number): void;
+  unhook(): void;
+}
+
+/**
+* EscapeSequenceParser interface.
+*/
+export interface IEscapeSequenceParser extends IDisposable {
+  /**
+   * Reset the parser to its initial state (handlers are kept).
+   */
+  reset(): void;
+
+  /**
+   * Parse string `data`.
+   * @param data The data to parse.
+   */
+  parse(data: string): void;
+
+  setPrintHandler(callback: (data: string, start: number, end: number) => void): void;
+  clearPrintHandler(): void;
+
+  setExecuteHandler(flag: string, callback: () => void): void;
+  clearExecuteHandler(flag: string): void;
+  setExecuteHandlerFallback(callback: (code: number) => void): void;
+
+  setCsiHandler(flag: string, callback: (params: number[], collect: string) => void): void;
+  clearCsiHandler(flag: string): void;
+  setCsiHandlerFallback(callback: (collect: string, params: number[], flag: number) => void): void;
+
+  setEscHandler(collectAndFlag: string, callback: () => void): void;
+  clearEscHandler(collectAndFlag: string): void;
+  setEscHandlerFallback(callback: (collect: string, flag: number) => void): void;
+
+  setOscHandler(ident: number, callback: (data: string) => void): void;
+  clearOscHandler(ident: number): void;
+  setOscHandlerFallback(callback: (identifier: number, data: string) => void): void;
+
+  setDcsHandler(collectAndFlag: string, handler: IDcsHandler): void;
+  clearDcsHandler(collectAndFlag: string): void;
+  setDcsHandlerFallback(handler: IDcsHandler): void;
+
+  setErrorHandler(callback: (state: IParsingState) => IParsingState): void;
+  clearErrorHandler(): void;
+}
+
+/**
+ * Interface for a line in the terminal buffer.
+ */
+export interface IBufferLine {
+  length: number;
+  isWrapped: boolean;
+  get(index: number): CharData;
+  set(index: number, value: CharData): void;
+  pop(): CharData | undefined;
+  push(data: CharData): void;
+  splice(start: number, deleteCount: number, ...items: CharData[]): CharData[];
+  insertCells(pos: number, n: number, ch: CharData): void;
+  deleteCells(pos: number, n: number, fill: CharData): void;
+  replaceCells(start: number, end: number, fill: CharData): void;
+}
@@ -3,88 +3,113 @@
 * @license MIT
 */

-import { ITerminal, IViewport } from './Interfaces';
-import { CharMeasure } from './utils/CharMeasure';
-import { IColorSet } from './renderer/Interfaces';
+import { IColorSet } from './renderer/Types';
+import { ITerminal, IViewport } from './Types';
+import { CharMeasure } from './ui/CharMeasure';
+import { Disposable } from './common/Lifecycle';
+import { addDisposableDomListener } from './ui/Lifecycle';
+
+const FALLBACK_SCROLL_BAR_WIDTH = 15;

 /**
 * Represents the viewport of a terminal, the visible area within the larger buffer of output.
 * Logic for the virtual scroll bar is included in this object.
 */
-export class Viewport implements IViewport {
-  private currentRowHeight: number = 0;
-  private lastRecordedBufferLength: number = 0;
-  private lastRecordedViewportHeight: number = 0;
-  private lastRecordedBufferHeight: number = 0;
-  private lastTouchY: number;
+export class Viewport extends Disposable implements IViewport {
+  public scrollBarWidth: number = 0;
+  private _currentRowHeight: number = 0;
+  private _lastRecordedBufferLength: number = 0;
+  private _lastRecordedViewportHeight: number = 0;
+  private _lastRecordedBufferHeight: number = 0;
+  private _lastTouchY: number;
+
+  // Stores a partial line amount when scrolling, this is used to keep track of how much of a line
+  // is scrolled so we can "scroll" over partial lines and feel natural on touchpads. This is a
+  // quick fix and could have a more robust solution in place that reset the value when needed.
+  private _wheelPartialScroll: number = 0;
+
+  private _refreshAnimationFrame: number | null = null;
+  private _ignoreNextScrollEvent: boolean = false;

  /**
   * Creates a new Viewport.
-   * @param terminal The terminal this viewport belongs to.
-   * @param viewportElement The DOM element acting as the viewport.
-   * @param scrollArea The DOM element acting as the scroll area.
-   * @param charMeasure A DOM element used to measure the character size of. the terminal.
+   * @param _terminal The terminal this viewport belongs to.
+   * @param _viewportElement The DOM element acting as the viewport.
+   * @param _scrollArea The DOM element acting as the scroll area.
+   * @param _charMeasure A DOM element used to measure the character size of. the terminal.
   */
  constructor(
-    private terminal: ITerminal,
-    private viewportElement: HTMLElement,
-    private scrollArea: HTMLElement,
-    private charMeasure: CharMeasure
+    private _terminal: ITerminal,
+    private _viewportElement: HTMLElement,
+    private _scrollArea: HTMLElement,
+    private _charMeasure: CharMeasure
  ) {
-    this.viewportElement.addEventListener('scroll', this.onScroll.bind(this));
+    super();
+
+    // Measure the width of the scrollbar. If it is 0 we can assume it's an OSX overlay scrollbar.
+    // Unfortunately the overlay scrollbar would be hidden underneath the screen element in that case,
+    // therefore we account for a standard amount to make it visible
+    this.scrollBarWidth = (this._viewportElement.offsetWidth - this._scrollArea.offsetWidth) || FALLBACK_SCROLL_BAR_WIDTH;
+    this.register(addDisposableDomListener(this._viewportElement, 'scroll', this._onScroll.bind(this)));

    // Perform this async to ensure the CharMeasure is ready.
    setTimeout(() => this.syncScrollArea(), 0);
  }

  public onThemeChanged(colors: IColorSet): void {
-    this.viewportElement.style.backgroundColor = colors.background;
+    this._viewportElement.style.backgroundColor = colors.background.css;
  }

  /**
   * Refreshes row height, setting line-height, viewport height and scroll area height if
   * necessary.
   */
-  private refresh(): void {
-    if (this.charMeasure.height > 0) {
-      this.currentRowHeight = this.terminal.renderer.dimensions.scaledCellHeight / window.devicePixelRatio;
+  private _refresh(): void {
+    if (this._refreshAnimationFrame === null) {
+      this._refreshAnimationFrame = requestAnimationFrame(() => this._innerRefresh());
+    }
+  }

-      if (this.lastRecordedViewportHeight !== this.terminal.renderer.dimensions.canvasHeight) {
-        this.lastRecordedViewportHeight = this.terminal.renderer.dimensions.canvasHeight;
-        this.viewportElement.style.height = this.lastRecordedViewportHeight + 'px';
-      }
-
-      const newBufferHeight = Math.round(this.currentRowHeight * this.lastRecordedBufferLength);
-      if (this.lastRecordedBufferHeight !== newBufferHeight) {
-        this.lastRecordedBufferHeight = newBufferHeight;
-        this.scrollArea.style.height = this.lastRecordedBufferHeight + 'px';
+  private _innerRefresh(): void {
+    if (this._charMeasure.height > 0) {
+      this._currentRowHeight = this._terminal.renderer.dimensions.scaledCellHeight / window.devicePixelRatio;
+      this._lastRecordedViewportHeight = this._viewportElement.offsetHeight;
+      const newBufferHeight = Math.round(this._currentRowHeight * this._lastRecordedBufferLength) + (this._lastRecordedViewportHeight - this._terminal.renderer.dimensions.canvasHeight);
+      if (this._lastRecordedBufferHeight !== newBufferHeight) {
+        this._lastRecordedBufferHeight = newBufferHeight;
+        this._scrollArea.style.height = this._lastRecordedBufferHeight + 'px';
      }
    }
+
+    // Sync scrollTop
+    const scrollTop = this._terminal.buffer.ydisp * this._currentRowHeight;
+    if (this._viewportElement.scrollTop !== scrollTop) {
+      // Ignore the next scroll event which will be triggered by setting the scrollTop as we do not
+      // want this event to scroll the terminal
+      this._ignoreNextScrollEvent = true;
+      this._viewportElement.scrollTop = scrollTop;
+    }
+
+    this._refreshAnimationFrame = null;
  }

  /**
   * Updates dimensions and synchronizes the scroll area if necessary.
   */
  public syncScrollArea(): void {
-    if (this.lastRecordedBufferLength !== this.terminal.buffer.lines.length) {
+    if (this._lastRecordedBufferLength !== this._terminal.buffer.lines.length) {
      // If buffer height changed
-      this.lastRecordedBufferLength = this.terminal.buffer.lines.length;
-      this.refresh();
-    } else if (this.lastRecordedViewportHeight !== (<any>this.terminal).renderer.dimensions.canvasHeight) {
+      this._lastRecordedBufferLength = this._terminal.buffer.lines.length;
+      this._refresh();
+    } else if (this._lastRecordedViewportHeight !== (<any>this._terminal).renderer.dimensions.canvasHeight) {
      // If viewport height changed
-      this.refresh();
+      this._refresh();
    } else {
      // If size has changed, refresh viewport
-      if (this.terminal.renderer.dimensions.scaledCellHeight / window.devicePixelRatio !== this.currentRowHeight) {
-        this.refresh();
+      if (this._terminal.renderer.dimensions.scaledCellHeight / window.devicePixelRatio !== this._currentRowHeight) {
+        this._refresh();
      }
    }
-
-    // Sync scrollTop
-    const scrollTop = this.terminal.buffer.ydisp * this.currentRowHeight;
-    if (this.viewportElement.scrollTop !== scrollTop) {
-      this.viewportElement.scrollTop = scrollTop;
-    }
  }

  /**
@@ -92,10 +117,23 @@ export class Viewport implements IViewport {
   * terminal to scroll to it.
   * @param ev The scroll event.
   */
-  private onScroll(ev: Event): void {
-    const newRow = Math.round(this.viewportElement.scrollTop / this.currentRowHeight);
-    const diff = newRow - this.terminal.buffer.ydisp;
-    this.terminal.scrollLines(diff, true);
+  private _onScroll(ev: Event): void {
+    // Don't attempt to scroll if the element is not visible, otherwise scrollTop will be corrupt
+    // which causes the terminal to scroll the buffer to the top
+    if (!this._viewportElement.offsetParent) {
+      return;
+    }
+
+    // Ignore the event if it was flagged to ignore (when the source of the event is from Viewport)
+    if (this._ignoreNextScrollEvent) {
+      this._ignoreNextScrollEvent = false;
+      return;
+    }
+
+
+    const newRow = Math.round(this._viewportElement.scrollTop / this._currentRowHeight);
+    const diff = newRow - this._terminal.buffer.ydisp;
+    this._terminal.scrollLines(diff, true);
  }

  /**
@@ -105,41 +143,74 @@ export class Viewport implements IViewport {
   * @param ev The mouse wheel event.
   */
  public onWheel(ev: WheelEvent): void {
-    if (ev.deltaY === 0) {
-      // Do nothing if it's not a vertical scroll event
+    const amount = this._getPixelsScrolled(ev);
+    if (amount === 0) {
      return;
    }
-    // Fallback to WheelEvent.DOM_DELTA_PIXEL
-    let multiplier = 1;
-    if (ev.deltaMode === WheelEvent.DOM_DELTA_LINE) {
-      multiplier = this.currentRowHeight;
-    } else if (ev.deltaMode === WheelEvent.DOM_DELTA_PAGE) {
-      multiplier = this.currentRowHeight * this.terminal.rows;
-    }
-    this.viewportElement.scrollTop += ev.deltaY * multiplier;
+    this._viewportElement.scrollTop += amount;
    // Prevent the page from scrolling when the terminal scrolls
    ev.preventDefault();
-  };
+  }
+
+  private _getPixelsScrolled(ev: WheelEvent): number {
+    // Do nothing if it's not a vertical scroll event
+    if (ev.deltaY === 0) {
+      return 0;
+    }
+
+    // Fallback to WheelEvent.DOM_DELTA_PIXEL
+    let amount = ev.deltaY;
+    if (ev.deltaMode === WheelEvent.DOM_DELTA_LINE) {
+      amount *= this._currentRowHeight;
+    } else if (ev.deltaMode === WheelEvent.DOM_DELTA_PAGE) {
+      amount *= this._currentRowHeight * this._terminal.rows;
+    }
+    return amount;
+  }
+
+  /**
+   * Gets the number of pixels scrolled by the mouse event taking into account what type of delta
+   * is being used.
+   * @param ev The mouse wheel event.
+   */
+  public getLinesScrolled(ev: WheelEvent): number {
+    // Do nothing if it's not a vertical scroll event
+    if (ev.deltaY === 0) {
+      return 0;
+    }
+
+    // Fallback to WheelEvent.DOM_DELTA_LINE
+    let amount = ev.deltaY;
+    if (ev.deltaMode === WheelEvent.DOM_DELTA_PIXEL) {
+      amount /= this._currentRowHeight + 0.0; // Prevent integer division
+      this._wheelPartialScroll += amount;
+      amount = Math.floor(Math.abs(this._wheelPartialScroll)) * (this._wheelPartialScroll > 0 ? 1 : -1);
+      this._wheelPartialScroll %= 1;
+    } else if (ev.deltaMode === WheelEvent.DOM_DELTA_PAGE) {
+      amount *= this._terminal.rows;
+    }
+    return amount;
+  }

  /**
   * Handles the touchstart event, recording the touch occurred.
   * @param ev The touch event.
   */
  public onTouchStart(ev: TouchEvent): void {
-    this.lastTouchY = ev.touches[0].pageY;
-  };
+    this._lastTouchY = ev.touches[0].pageY;
+  }

  /**
   * Handles the touchmove event, scrolling the viewport if the position shifted.
   * @param ev The touch event.
   */
  public onTouchMove(ev: TouchEvent): void {
-    let deltaY = this.lastTouchY - ev.touches[0].pageY;
-    this.lastTouchY = ev.touches[0].pageY;
+    const deltaY = this._lastTouchY - ev.touches[0].pageY;
+    this._lastTouchY = ev.touches[0].pageY;
    if (deltaY === 0) {
      return;
    }
-    this.viewportElement.scrollTop += deltaY;
+    this._viewportElement.scrollTop += deltaY;
    ev.preventDefault();
-  };
+  }
 }
@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ *
+ * Implements the attach method, that attaches the terminal to a WebSocket stream.
+ */
+
+import { Terminal, IDisposable } from 'xterm';
+
+export interface IAttachAddonTerminal extends Terminal {
+  _core: {
+    register<T extends IDisposable>(d: T): void;
+  };
+
+  __socket?: WebSocket;
+  __attachSocketBuffer?: string;
+
+  __getMessage?(ev: MessageEvent): void;
+  __flushBuffer?(): void;
+  __pushToBuffer?(data: string): void;
+  __sendData?(data: string): void;
+}
@@ -5,14 +5,14 @@

 import { assert, expect } from 'chai';

-import * as attach from './attach'
+import * as attach from './attach';

 class MockTerminal {}

 describe('attach addon', () => {
  describe('apply', () => {
    it('should do register the `attach` and `detach` methods', () => {
-      attach.apply(MockTerminal);
+      attach.apply(<any>MockTerminal);
      assert.equal(typeof (<any>MockTerminal).prototype.attach, 'function');
      assert.equal(typeof (<any>MockTerminal).prototype.detach, 'function');
    });
@@ -5,118 +5,151 @@
 * Implements the attach method, that attaches the terminal to a WebSocket stream.
 */

+import { Terminal, IDisposable } from 'xterm';
+import { IAttachAddonTerminal } from './Interfaces';
+
 /**
 * Attaches the given terminal to the given socket.
 *
- * @param {Terminal} term - The terminal to be attached to the given socket.
- * @param {WebSocket} socket - The socket to attach the current terminal.
- * @param {boolean} bidirectional - Whether the terminal should send data
- *                                  to the socket as well.
- * @param {boolean} buffered - Whether the rendering of incoming data
- *                             should happen instantly or at a maximum
- *                             frequency of 1 rendering per 10ms.
+ * @param term The terminal to be attached to the given socket.
+ * @param socket The socket to attach the current terminal.
+ * @param bidirectional Whether the terminal should send data to the socket as well.
+ * @param buffered Whether the rendering of incoming data should happen instantly or at a maximum
+ * frequency of 1 rendering per 10ms.
 */
-export function attach(term, socket, bidirectional, buffered) {
-  bidirectional = (typeof bidirectional == 'undefined') ? true : bidirectional;
-  term.socket = socket;
+export function attach(term: Terminal, socket: WebSocket, bidirectional: boolean, buffered: boolean): void {
+  const addonTerminal = <IAttachAddonTerminal>term;
+  bidirectional = (typeof bidirectional === 'undefined') ? true : bidirectional;
+  addonTerminal.__socket = socket;

-  term._flushBuffer = function() {
-    term.write(term._attachSocketBuffer);
-    term._attachSocketBuffer = null;
+  addonTerminal.__flushBuffer = () => {
+    addonTerminal.write(addonTerminal.__attachSocketBuffer);
+    addonTerminal.__attachSocketBuffer = null;
  };

-  term._pushToBuffer = function(data) {
-    if (term._attachSocketBuffer) {
-      term._attachSocketBuffer += data;
+  addonTerminal.__pushToBuffer = (data: string) => {
+    if (addonTerminal.__attachSocketBuffer) {
+      addonTerminal.__attachSocketBuffer += data;
    } else {
-      term._attachSocketBuffer = data;
-      setTimeout(term._flushBuffer, 10);
+      addonTerminal.__attachSocketBuffer = data;
+      setTimeout(addonTerminal.__flushBuffer, 10);
    }
  };

-  var myTextDecoder;
+  // TODO: This should be typed but there seem to be issues importing the type
+  let myTextDecoder: any;

-  term._getMessage = function(ev) {
-    var str;
-    if (typeof ev.data === "object") {
+  addonTerminal.__getMessage = function(ev: MessageEvent): void {
+    let str: string;
+
+    if (typeof ev.data === 'object') {
+      if (!myTextDecoder) {
+        myTextDecoder = new TextDecoder();
+      }
      if (ev.data instanceof ArrayBuffer) {
-          if (!myTextDecoder) {
-            myTextDecoder = new TextDecoder();
-          }
+        str = myTextDecoder.decode(ev.data);
+        displayData(str);
+      } else {
+        const fileReader = new FileReader();

-          str = myTextDecoder.decode( ev.data );
+        fileReader.addEventListener('load', () => {
+          str = myTextDecoder.decode(fileReader.result);
+          displayData(str);
+        });
+        fileReader.readAsArrayBuffer(ev.data);
      }
-      else {
-        throw "TODO: handle Blob?";
-      }
-    }
-
-    if (buffered) {
-      term._pushToBuffer(str || ev.data);
+    } else if (typeof ev.data === 'string') {
+      displayData(ev.data);
    } else {
-      term.write(str || ev.data);
+      throw Error(`Cannot handle "${typeof ev.data}" websocket message.`);
    }
  };

-  term._sendData = function(data) {
+  /**
+  * Push data to buffer or write it in the terminal.
+  * This is used as a callback for FileReader.onload.
+  *
+  * @param str String decoded by FileReader.
+  * @param data The data of the EventMessage.
+  */
+  function displayData(str?: string, data?: string): void {
+    if (buffered) {
+      addonTerminal.__pushToBuffer(str || data);
+    } else {
+      addonTerminal.write(str || data);
+    }
+  }
+
+  addonTerminal.__sendData = (data: string) => {
    if (socket.readyState !== 1) {
      return;
    }
    socket.send(data);
  };

-  socket.addEventListener('message', term._getMessage);
+  addonTerminal._core.register(addSocketListener(socket, 'message', addonTerminal.__getMessage));

  if (bidirectional) {
-    term.on('data', term._sendData);
+    addonTerminal._core.register(addonTerminal.addDisposableListener('data', addonTerminal.__sendData));
  }

-  socket.addEventListener('close', term.detach.bind(term, socket));
-  socket.addEventListener('error', term.detach.bind(term, socket));
-};
+  addonTerminal._core.register(addSocketListener(socket, 'close', () => detach(addonTerminal, socket)));
+  addonTerminal._core.register(addSocketListener(socket, 'error', () => detach(addonTerminal, socket)));
+}
+
+function addSocketListener(socket: WebSocket, type: string, handler: (this: WebSocket, ev: Event) => any): IDisposable {
+  socket.addEventListener(type, handler);
+  return {
+    dispose: () => {
+      if (!handler) {
+        // Already disposed
+        return;
+      }
+      socket.removeEventListener(type, handler);
+      handler = null;
+    }
+  };
+}

 /**
 * Detaches the given terminal from the given socket
 *
- * @param {Terminal} term - The terminal to be detached from the given socket.
- * @param {WebSocket} socket - The socket from which to detach the current
- *                             terminal.
+ * @param term The terminal to be detached from the given socket.
+ * @param socket The socket from which to detach the current terminal.
 */
-export function detach(term, socket) {
-  term.off('data', term._sendData);
+export function detach(term: Terminal, socket: WebSocket): void {
+  const addonTerminal = <IAttachAddonTerminal>term;
+  addonTerminal.off('data', addonTerminal.__sendData);

-  socket = (typeof socket == 'undefined') ? term.socket : socket;
+  socket = (typeof socket === 'undefined') ? addonTerminal.__socket : socket;

  if (socket) {
-    socket.removeEventListener('message', term._getMessage);
+    socket.removeEventListener('message', addonTerminal.__getMessage);
  }

-  delete term.socket;
-};
+  delete addonTerminal.__socket;
+}


-export function apply(terminalConstructor) {
+export function apply(terminalConstructor: typeof Terminal): void {
  /**
   * Attaches the current terminal to the given socket
   *
-   * @param {WebSocket} socket - The socket to attach the current terminal.
-   * @param {boolean} bidirectional - Whether the terminal should send data
-   *                                  to the socket as well.
-   * @param {boolean} buffered - Whether the rendering of incoming data
-   *                             should happen instantly or at a maximum
-   *                             frequency of 1 rendering per 10ms.
+   * @param socket The socket to attach the current terminal.
+   * @param bidirectional Whether the terminal should send data to the socket as well.
+   * @param buffered Whether the rendering of incoming data should happen instantly or at a maximum
+   * frequency of 1 rendering per 10ms.
   */
-  terminalConstructor.prototype.attach = function(socket, bidirectional, buffered) {
-    return attach(this, socket, bidirectional, buffered);
+  (<any>terminalConstructor.prototype).attach = function (socket: WebSocket, bidirectional: boolean, buffered: boolean): void {
+    attach(this, socket, bidirectional, buffered);
  };

  /**
   * Detaches the current terminal from the given socket.
   *
-   * @param {WebSocket} socket - The socket from which to detach the current
-   *                             terminal.
+   * @param socket The socket from which to detach the current terminal.
   */
-  terminalConstructor.prototype.detach = function(socket) {
-    return detach(this, socket);
+  (<any>terminalConstructor.prototype).detach = function (socket: WebSocket): void {
+    detach(this, socket);
  };
 }
@@ -5,6 +5,12 @@
    "rootDir": ".",
    "outDir": "../../../lib/addons/attach/",
    "sourceMap": true,
-    "removeComments": true
-  }
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
 }
@@ -0,0 +1,3 @@
+## fit addon
+
+The fit addon adjusts the dimensions of the terminal to match best fit its parent element container. `fit` will only work when the element is visible.
@@ -5,14 +5,14 @@

 import { assert, expect } from 'chai';

-import * as fit from './fit'
+import * as fit from './fit';

 class MockTerminal {}

 describe('fit addon', () => {
  describe('apply', () => {
    it('should do register the `proposeGeometry` and `fit` methods', () => {
-      fit.apply(MockTerminal);
+      fit.apply(<any>MockTerminal);
      assert.equal(typeof (<any>MockTerminal).prototype.proposeGeometry, 'function');
      assert.equal(typeof (<any>MockTerminal).prototype.fit, 'function');
    });
@@ -13,43 +13,55 @@
 *          row and truncate its width with the current number of columns).
 */

-export function proposeGeometry(term) {
+import { Terminal } from 'xterm';
+
+export interface IGeometry {
+  rows: number;
+  cols: number;
+}
+
+export function proposeGeometry(term: Terminal): IGeometry {
  if (!term.element.parentElement) {
    return null;
  }
-  var parentElementStyle = window.getComputedStyle(term.element.parentElement);
-  var parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height'));
-  var parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')) - 17);
-  var elementStyle = window.getComputedStyle(term.element);
-  var elementPaddingVer = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom'));
-  var elementPaddingHor = parseInt(elementStyle.getPropertyValue('padding-right')) + parseInt(elementStyle.getPropertyValue('padding-left'));
-  var availableHeight = parentElementHeight - elementPaddingVer;
-  var availableWidth = parentElementWidth - elementPaddingHor;
-  var geometry = {
-    cols: Math.floor(availableWidth / term.renderer.dimensions.actualCellWidth),
-    rows: Math.floor(availableHeight / term.renderer.dimensions.actualCellHeight)
+  const parentElementStyle = window.getComputedStyle(term.element.parentElement);
+  const parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height'));
+  const parentElementWidth = Math.max(0, parseInt(parentElementStyle.getPropertyValue('width')));
+  const elementStyle = window.getComputedStyle(term.element);
+  const elementPadding = {
+    top: parseInt(elementStyle.getPropertyValue('padding-top')),
+    bottom: parseInt(elementStyle.getPropertyValue('padding-bottom')),
+    right: parseInt(elementStyle.getPropertyValue('padding-right')),
+    left: parseInt(elementStyle.getPropertyValue('padding-left'))
+  };
+  const elementPaddingVer = elementPadding.top + elementPadding.bottom;
+  const elementPaddingHor = elementPadding.right + elementPadding.left;
+  const availableHeight = parentElementHeight - elementPaddingVer;
+  const availableWidth = parentElementWidth - elementPaddingHor - (<any>term)._core.viewport.scrollBarWidth;
+  const geometry = {
+    cols: Math.floor(availableWidth / (<any>term)._core.renderer.dimensions.actualCellWidth),
+    rows: Math.floor(availableHeight / (<any>term)._core.renderer.dimensions.actualCellHeight)
  };
-
  return geometry;
-};
+}

-export function fit(term) {
-  var geometry = proposeGeometry(term);
+export function fit(term: Terminal): void {
+  const geometry = proposeGeometry(term);
  if (geometry) {
    // Force a full render
    if (term.rows !== geometry.rows || term.cols !== geometry.cols) {
-      term.renderer.clear();
+      (<any>term)._core.renderer.clear();
      term.resize(geometry.cols, geometry.rows);
    }
  }
-};
-
-export function apply(terminalConstructor) {
-  terminalConstructor.prototype.proposeGeometry = function() {
-    return proposeGeometry(this);
-  }
-
-  terminalConstructor.prototype.fit = function() {
-    return fit(this);
-  }
+}
+
+export function apply(terminalConstructor: typeof Terminal): void {
+  (<any>terminalConstructor.prototype).proposeGeometry = function (): IGeometry {
+    return proposeGeometry(this);
+  };
+
+  (<any>terminalConstructor.prototype).fit = function (): void {
+    fit(this);
+  };
 }
@@ -5,6 +5,12 @@
    "rootDir": ".",
    "outDir": "../../../lib/addons/fit/",
    "sourceMap": true,
-    "removeComments": true
-  }
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
 }
@@ -5,14 +5,14 @@

 import { assert, expect } from 'chai';

-import * as fullscreen from './fullscreen'
+import * as fullscreen from './fullscreen';

 class MockTerminal {}

 describe('fullscreen addon', () => {
  describe('apply', () => {
    it('should do register the `toggleFullscreen` method', () => {
-      fullscreen.apply(MockTerminal);
+      fullscreen.apply(<any>MockTerminal);
      assert.equal(typeof (<any>MockTerminal).prototype.toggleFullScreen, 'function');
    });
  });
@@ -3,15 +3,17 @@
 * @license MIT
 */

+import { Terminal } from 'xterm';
+
 /**
 * Toggle the given terminal's fullscreen mode.
- * @param {Terminal} term - The terminal to toggle full screen mode
- * @param {boolean} fullscreen - Toggle fullscreen on (true) or off (false)
+ * @param term The terminal to toggle full screen mode
+ * @param fullscreen Toggle fullscreen on (true) or off (false)
 */
-export function toggleFullScreen(term, fullscreen) {
-  var fn;
+export function toggleFullScreen(term: Terminal, fullscreen: boolean): void {
+  let fn: string;

-  if (typeof fullscreen == 'undefined') {
+  if (typeof fullscreen === 'undefined') {
    fn = (term.element.classList.contains('fullscreen')) ? 'remove' : 'add';
  } else if (!fullscreen) {
    fn = 'remove';
@@ -20,10 +22,10 @@ export function toggleFullScreen(term, fullscreen) {
  }

  term.element.classList[fn]('fullscreen');
-};
+}

-export function apply(terminalConstructor) {
-  terminalConstructor.prototype.toggleFullScreen = function (fullscreen) {
-    return toggleFullScreen(this, fullscreen);
+export function apply(terminalConstructor: typeof Terminal): void {
+  (<any>terminalConstructor.prototype).toggleFullScreen = function (fullscreen: boolean): void {
+    toggleFullScreen(this, fullscreen);
  };
 }
@@ -5,6 +5,12 @@
    "rootDir": ".",
    "outDir": "../../../lib/addons/fullscreen/",
    "sourceMap": true,
-    "removeComments": true
-  }
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
 }
@@ -0,0 +1,22 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { Terminal } from 'xterm';
+
+// TODO: Don't rely on this private API
+export interface ITerminalCore {
+  buffer: any;
+  selectionManager: any;
+}
+
+export interface ISearchAddonTerminal extends Terminal {
+  __searchHelper?: ISearchHelper;
+  _core: ITerminalCore;
+}
+
+export interface ISearchHelper {
+  findNext(term: string): boolean;
+  findPrevious(term: string): boolean;
+}
@@ -3,8 +3,7 @@
 * @license MIT
 */

-// import { ITerminal } from '../../Interfaces';
-// import { translateBufferLineToString } from '../../utils/BufferLine';
+import { ISearchHelper, ISearchAddonTerminal } from './Interfaces';

 interface ISearchResult {
  term: string;
@@ -15,8 +14,8 @@ interface ISearchResult {
 /**
 * A class that knows how to search the terminal and how to display the results.
 */
-export class SearchHelper {
-  constructor(private _terminal: any) {
+export class SearchHelper implements ISearchHelper {
+  constructor(private _terminal: ISearchAddonTerminal) {
    // TODO: Search for multiple instances on 1 line
    // TODO: Don't use the actual selection, instead use a "find selection" so multiple instances can be highlighted
    // TODO: Highlight other instances in the viewport
@@ -36,14 +35,14 @@ export class SearchHelper {

    let result: ISearchResult;

-    let startRow = this._terminal.buffer.ydisp;
-    if (this._terminal.selectionManager.selectionEnd) {
+    let startRow = this._terminal._core.buffer.ydisp;
+    if (this._terminal._core.selectionManager.selectionEnd) {
      // Start from the selection end if there is a selection
-      startRow = this._terminal.selectionManager.selectionEnd[1];
+      startRow = this._terminal._core.selectionManager.selectionEnd[1];
    }

    // Search from ydisp + 1 to end
-    for (let y = startRow + 1; y < this._terminal.buffer.ybase + this._terminal.rows; y++) {
+    for (let y = startRow + 1; y < this._terminal._core.buffer.ybase + this._terminal.rows; y++) {
      result = this._findInLine(term, y);
      if (result) {
        break;
@@ -77,10 +76,10 @@ export class SearchHelper {

    let result: ISearchResult;

-    let startRow = this._terminal.buffer.ydisp;
-    if (this._terminal.selectionManager.selectionStart) {
+    let startRow = this._terminal._core.buffer.ydisp;
+    if (this._terminal._core.selectionManager.selectionStart) {
      // Start from the selection end if there is a selection
-      startRow = this._terminal.selectionManager.selectionStart[1];
+      startRow = this._terminal._core.selectionManager.selectionStart[1];
    }

    // Search from ydisp + 1 to end
@@ -93,7 +92,7 @@ export class SearchHelper {

    // Search from the top to the current ydisp
    if (!result) {
-      for (let y = this._terminal.buffer.ybase + this._terminal.rows - 1; y > startRow; y--) {
+      for (let y = this._terminal._core.buffer.ybase + this._terminal.rows - 1; y > startRow; y--) {
        result = this._findInLine(term, y);
        if (result) {
          break;
@@ -112,10 +111,25 @@ export class SearchHelper {
   * @return The search result if it was found.
   */
  private _findInLine(term: string, y: number): ISearchResult {
-    const lowerStringLine = this._terminal.buffer.translateBufferLineToString(y, true).toLowerCase();
+    const lowerStringLine = this._terminal._core.buffer.translateBufferLineToString(y, true).toLowerCase();
    const lowerTerm = term.toLowerCase();
-    const searchIndex = lowerStringLine.indexOf(lowerTerm);
+    let searchIndex = lowerStringLine.indexOf(lowerTerm);
    if (searchIndex >= 0) {
+      const line = this._terminal._core.buffer.lines.get(y);
+      for (let i = 0; i < searchIndex; i++) {
+        const charData = line.get(i);
+        // Adjust the searchIndex to normalize emoji into single chars
+        const char = charData[1/*CHAR_DATA_CHAR_INDEX*/];
+        if (char.length > 1) {
+          searchIndex -= char.length - 1;
+        }
+        // Adjust the searchIndex for empty characters following wide unicode
+        // chars (eg. CJK)
+        const charWidth = charData[2/*CHAR_DATA_WIDTH_INDEX*/];
+        if (charWidth === 0) {
+          searchIndex++;
+        }
+      }
      return {
        term,
        col: searchIndex,
@@ -133,8 +147,8 @@ export class SearchHelper {
    if (!result) {
      return false;
    }
-    this._terminal.selectionManager.setSelection(result.col, result.row, result.term.length);
-    this._terminal.scrollLines(result.row - this._terminal.buffer.ydisp, false);
+    this._terminal._core.selectionManager.setSelection(result.col, result.row, result.term.length);
+    this._terminal.scrollLines(result.row - this._terminal._core.buffer.ydisp);
    return true;
  }
 }
@@ -0,0 +1,49 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { assert, expect } from 'chai';
+import * as search from './search';
+import { SearchHelper } from './SearchHelper';
+import { ISearchHelper } from './Interfaces';
+
+
+class MockTerminalPlain {}
+
+class MockTerminal {
+  private _core: any;
+  public searchHelper: ISearchHelper;
+  constructor(options: any) {
+    this._core = new (require('../../../lib/Terminal').Terminal)(options);
+    this.searchHelper = new SearchHelper(this as any);
+  }
+  get core(): any {
+    return this._core;
+  }
+  pushWriteData(): void {
+    this._core._innerWrite();
+  }
+}
+
+describe('search addon', function(): void {
+  describe('apply', () => {
+    it('should register findNext and findPrevious', () => {
+      search.apply(<any>MockTerminalPlain);
+      assert.equal(typeof (<any>MockTerminalPlain).prototype.findNext, 'function');
+      assert.equal(typeof (<any>MockTerminalPlain).prototype.findPrevious, 'function');
+    });
+  });
+  it('Searchhelper - should find correct position', function(): void {
+    search.apply(<any>MockTerminal);
+    const term = new MockTerminal({cols: 20, rows: 3});
+    term.core.write('Hello World\r\ntest\n123....hello');
+    term.pushWriteData();
+    const hello0 = (term.searchHelper as any)._findInLine('Hello', 0);
+    const hello1 = (term.searchHelper as any)._findInLine('Hello', 1);
+    const hello2 = (term.searchHelper as any)._findInLine('Hello', 2);
+    expect(hello0).eql({col: 0, row: 0, term: 'Hello'});
+    expect(hello1).eql(undefined);
+    expect(hello2).eql({col: 11, row: 2, term: 'Hello'});
+  });
+});
@@ -4,7 +4,8 @@
 */

 import { SearchHelper } from './SearchHelper';
-
+import { Terminal } from 'xterm';
+import { ISearchAddonTerminal } from './Interfaces';

 /**
 * Find the next instance of the term, then scroll to and select it. If it
@@ -12,12 +13,13 @@ import { SearchHelper } from './SearchHelper';
 * @param term Tne search term.
 * @return Whether a result was found.
 */
-export function findNext(terminal: any, term: string): boolean {
-  if (!terminal._searchHelper) {
-    terminal.searchHelper = new SearchHelper(terminal);
+export function findNext(terminal: Terminal, term: string): boolean {
+  const addonTerminal = <ISearchAddonTerminal>terminal;
+  if (!addonTerminal.__searchHelper) {
+    addonTerminal.__searchHelper = new SearchHelper(addonTerminal);
  }
-  return (<SearchHelper>terminal.searchHelper).findNext(term);
-};
+  return addonTerminal.__searchHelper.findNext(term);
+}

 /**
 * Find the previous instance of the term, then scroll to and select it. If it
@@ -25,19 +27,20 @@ export function findNext(terminal: any, term: string): boolean {
 * @param term Tne search term.
 * @return Whether a result was found.
 */
-export function findPrevious(terminal: any, term: string): boolean {
-  if (!terminal._searchHelper) {
-    terminal.searchHelper = new SearchHelper(terminal);
-  }
-  return (<SearchHelper>terminal.searchHelper).findPrevious(term);
-};
-
-export function apply(terminalConstructor) {
-  terminalConstructor.prototype.findNext = function(term) {
-    return findNext(this, term);
-  }
-
-  terminalConstructor.prototype.findPrevious = function(term) {
-    return findPrevious(this, term);
+export function findPrevious(terminal: Terminal, term: string): boolean {
+  const addonTerminal = <ISearchAddonTerminal>terminal;
+  if (!addonTerminal.__searchHelper) {
+    addonTerminal.__searchHelper = new SearchHelper(addonTerminal);
  }
+  return addonTerminal.__searchHelper.findPrevious(term);
+}
+
+export function apply(terminalConstructor: typeof Terminal): void {
+  (<any>terminalConstructor.prototype).findNext = function(term: string): boolean {
+    return findNext(this, term);
+  };
+
+  (<any>terminalConstructor.prototype).findPrevious = function(term: string): boolean {
+    return findPrevious(this, term);
+  };
 }
@@ -5,6 +5,12 @@
    "rootDir": ".",
    "outDir": "../../../lib/addons/search/",
    "sourceMap": true,
-    "removeComments": true
-  }
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
 }
@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ *
+ * Implements the attach method, that attaches the terminal to a WebSocket stream.
+ */
+
+import { Terminal } from 'xterm';
+
+export interface ITerminadoAddonTerminal extends Terminal {
+  __socket?: WebSocket;
+  __attachSocketBuffer?: string;
+
+  __getMessage?(ev: MessageEvent): void;
+  __flushBuffer?(): void;
+  __pushToBuffer?(data: string): void;
+  __sendData?(data: string): void;
+  __setSize?(size: {rows: number, cols: number}): void;
+}
@@ -5,14 +5,14 @@

 import { assert, expect } from 'chai';

-import * as terminado from './terminado'
+import * as terminado from './terminado';

 class MockTerminal {}

 describe('terminado addon', () => {
  describe('apply', () => {
    it('should do register the `terminadoAttach` and `terminadoDetach` methods', () => {
-      terminado.apply(MockTerminal);
+      terminado.apply(<any>MockTerminal);
      assert.equal(typeof (<any>MockTerminal).prototype.terminadoAttach, 'function');
      assert.equal(typeof (<any>MockTerminal).prototype.terminadoDetach, 'function');
    });
@@ -6,106 +6,105 @@
 * WebSocket stream.
 */

+import { Terminal } from 'xterm';
+import { ITerminadoAddonTerminal } from './Interfaces';
+
 /**
 * Attaches the given terminal to the given socket.
 *
- * @param {Terminal} term - The terminal to be attached to the given socket.
- * @param {WebSocket} socket - The socket to attach the current terminal.
- * @param {boolean} bidirectional - Whether the terminal should send data
- *                                  to the socket as well.
- * @param {boolean} buffered - Whether the rendering of incoming data
- *                             should happen instantly or at a maximum
- *                             frequency of 1 rendering per 10ms.
+ * @param term The terminal to be attached to the given socket.
+ * @param socket The socket to attach the current terminal.
+ * @param bidirectional Whether the terminal should send data to the socket as well.
+ * @param buffered Whether the rendering of incoming data should happen instantly or at a maximum
+ * frequency of 1 rendering per 10ms.
 */
-export function terminadoAttach(term, socket, bidirectional, buffered) {
-  bidirectional = (typeof bidirectional == 'undefined') ? true : bidirectional;
-  term.socket = socket;
+export function terminadoAttach(term: Terminal, socket: WebSocket, bidirectional: boolean, buffered: boolean): void {
+  const addonTerminal = <ITerminadoAddonTerminal>term;
+  bidirectional = (typeof bidirectional === 'undefined') ? true : bidirectional;
+  addonTerminal.__socket = socket;

-  term._flushBuffer = function() {
-    term.write(term._attachSocketBuffer);
-    term._attachSocketBuffer = null;
+  addonTerminal.__flushBuffer = () => {
+    addonTerminal.write(addonTerminal.__attachSocketBuffer);
+    addonTerminal.__attachSocketBuffer = null;
  };

-  term._pushToBuffer = function(data) {
-    if (term._attachSocketBuffer) {
-      term._attachSocketBuffer += data;
+  addonTerminal.__pushToBuffer = (data: string) => {
+    if (addonTerminal.__attachSocketBuffer) {
+      addonTerminal.__attachSocketBuffer += data;
    } else {
-      term._attachSocketBuffer = data;
-      setTimeout(term._flushBuffer, 10);
+      addonTerminal.__attachSocketBuffer = data;
+      setTimeout(addonTerminal.__flushBuffer, 10);
    }
  };

-  term._getMessage = function(ev) {
-    var data = JSON.parse(ev.data)
-    if( data[0] == "stdout" ) {
+  addonTerminal.__getMessage = (ev: MessageEvent) => {
+    const data = JSON.parse(ev.data);
+    if (data[0] === 'stdout') {
      if (buffered) {
-        term._pushToBuffer(data[1]);
+        addonTerminal.__pushToBuffer(data[1]);
      } else {
-        term.write(data[1]);
+        addonTerminal.write(data[1]);
      }
    }
  };

-  term._sendData = function(data) {
+  addonTerminal.__sendData = (data: string) => {
    socket.send(JSON.stringify(['stdin', data]));
  };

-  term._setSize = function(size) {
+  addonTerminal.__setSize = (size: {rows: number, cols: number}) => {
    socket.send(JSON.stringify(['set_size', size.rows, size.cols]));
  };

-  socket.addEventListener('message', term._getMessage);
+  socket.addEventListener('message', addonTerminal.__getMessage);

  if (bidirectional) {
-    term.on('data', term._sendData);
+    addonTerminal.on('data', addonTerminal.__sendData);
  }
-  term.on('resize', term._setSize);
+  addonTerminal.on('resize', addonTerminal.__setSize);

-  socket.addEventListener('close', term.terminadoDetach.bind(term, socket));
-  socket.addEventListener('error', term.terminadoDetach.bind(term, socket));
-};
+  socket.addEventListener('close', () => terminadoDetach(addonTerminal, socket));
+  socket.addEventListener('error', () => terminadoDetach(addonTerminal, socket));
+}

 /**
 * Detaches the given terminal from the given socket
 *
- * @param {Xterm} term - The terminal to be detached from the given socket.
- * @param {WebSocket} socket - The socket from which to detach the current
- *                             terminal.
+ * @param term The terminal to be detached from the given socket.
+ * @param socket The socket from which to detach the current terminal.
 */
-export function terminadoDetach(term, socket) {
-  term.off('data', term._sendData);
+export function terminadoDetach(term: Terminal, socket: WebSocket): void {
+  const addonTerminal = <ITerminadoAddonTerminal>term;
+  addonTerminal.off('data', addonTerminal.__sendData);

-  socket = (typeof socket == 'undefined') ? term.socket : socket;
+  socket = (typeof socket === 'undefined') ? addonTerminal.__socket : socket;

  if (socket) {
-    socket.removeEventListener('message', term._getMessage);
+    socket.removeEventListener('message', addonTerminal.__getMessage);
  }

-  delete term.socket;
-};
+  delete addonTerminal.__socket;
+}

-export function apply(terminalConstructor) {
+export function apply(terminalConstructor: typeof Terminal): void {
  /**
   * Attaches the current terminal to the given socket
   *
-   * @param {WebSocket} socket - The socket to attach the current terminal.
-   * @param {boolean} bidirectional - Whether the terminal should send data
-   *                                  to the socket as well.
-   * @param {boolean} buffered - Whether the rendering of incoming data
-   *                             should happen instantly or at a maximum
-   *                             frequency of 1 rendering per 10ms.
+   * @param socket - The socket to attach the current terminal.
+   * @param bidirectional - Whether the terminal should send data to the socket as well.
+   * @param buffered - Whether the rendering of incoming data should happen instantly or at a
+   * maximum frequency of 1 rendering per 10ms.
   */
-  terminalConstructor.prototype.terminadoAttach = function(socket, bidirectional, buffered) {
+  (<any>terminalConstructor.prototype).terminadoAttach = function (socket: WebSocket, bidirectional: boolean, buffered: boolean): void {
    return terminadoAttach(this, socket, bidirectional, buffered);
  };

  /**
   * Detaches the current terminal from the given socket.
   *
-   * @param {WebSocket} socket - The socket from which to detach the current
-   *                             terminal.
+   * @param socket The socket from which to detach the current terminal.
   */
-  terminalConstructor.prototype.terminadoDetach = function(socket) {
+  (<any>terminalConstructor.prototype).terminadoDetach = function (socket: WebSocket): void {
    return terminadoDetach(this, socket);
  };
 }
@@ -5,6 +5,12 @@
    "rootDir": ".",
    "outDir": "../../../lib/addons/terminado/",
    "sourceMap": true,
-    "removeComments": true
-  }
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
 }
@@ -0,0 +1,5 @@
+{
+  "name": "xterm.weblinks",
+  "main": "weblinks.js",
+  "private": true
+}
@@ -0,0 +1,16 @@
+{
+  "compilerOptions": {
+    "module": "commonjs",
+    "target": "es5",
+    "rootDir": ".",
+    "outDir": "../../../lib/addons/webLinks/",
+    "sourceMap": true,
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
+}
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { assert, expect } from 'chai';
+
+import * as webLinks from './webLinks';
+
+class MockTerminal {
+  public regex: RegExp;
+  public handler: (event: MouseEvent, uri: string) => void;
+  public options?: any;
+
+  public registerLinkMatcher(regex: RegExp, handler: (event: MouseEvent, uri: string) => void, options?: any): number {
+    this.regex = regex;
+    this.handler = handler;
+    this.options = options;
+    return 0;
+  }
+}
+
+describe('webLinks addon', () => {
+  describe('apply', () => {
+    it('should do register the `webLinksInit` method', () => {
+      webLinks.apply(<any>MockTerminal);
+      assert.equal(typeof (<any>MockTerminal).prototype.webLinksInit, 'function');
+    });
+  });
+
+  it('should allow ~ character in URI path', () => {
+    const term = new MockTerminal();
+    webLinks.webLinksInit(<any>term);
+
+    const row = '  http://foo.com/a~b#c~d?e~f  ';
+
+    const match = row.match(term.regex);
+    const uri = match[term.options.matchIndex];
+
+    assert.equal(uri, 'http://foo.com/a~b#c~d?e~f');
+  });
+});
@@ -0,0 +1,46 @@
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { Terminal, ILinkMatcherOptions } from 'xterm';
+
+const protocolClause = '(https?:\\/\\/)';
+const domainCharacterSet = '[\\da-z\\.-]+';
+const negatedDomainCharacterSet = '[^\\da-z\\.-]+';
+const domainBodyClause = '(' + domainCharacterSet + ')';
+const tldClause = '([a-z\\.]{2,6})';
+const ipClause = '((\\d{1,3}\\.){3}\\d{1,3})';
+const localHostClause = '(localhost)';
+const portClause = '(:\\d{1,5})';
+const hostClause = '((' + domainBodyClause + '\\.' + tldClause + ')|' + ipClause + '|' + localHostClause + ')' + portClause + '?';
+const pathClause = '(\\/[\\/\\w\\.\\-%~]*)*';
+const queryStringHashFragmentCharacterSet = '[0-9\\w\\[\\]\\(\\)\\/\\?\\!#@$%&\'*+,:;~\\=\\.\\-]*';
+const queryStringClause = '(\\?' + queryStringHashFragmentCharacterSet + ')?';
+const hashFragmentClause = '(#' + queryStringHashFragmentCharacterSet + ')?';
+const negatedPathCharacterSet = '[^\\/\\w\\.\\-%]+';
+const bodyClause = hostClause + pathClause + queryStringClause + hashFragmentClause;
+const start = '(?:^|' + negatedDomainCharacterSet + ')(';
+const end = ')($|' + negatedPathCharacterSet + ')';
+const strictUrlRegex = new RegExp(start + protocolClause + bodyClause + end);
+
+function handleLink(event: MouseEvent, uri: string): void {
+  window.open(uri, '_blank');
+}
+
+/**
+ * Initialize the web links addon, registering the link matcher.
+ * @param term The terminal to use web links within.
+ * @param handler A custom handler to use.
+ * @param options Custom options to use, matchIndex will always be ignored.
+ */
+export function webLinksInit(term: Terminal, handler: (event: MouseEvent, uri: string) => void = handleLink, options: ILinkMatcherOptions = {}): void {
+  options.matchIndex = 1;
+  term.registerLinkMatcher(strictUrlRegex, handler, options);
+}
+
+export function apply(terminalConstructor: typeof Terminal): void {
+  (<any>terminalConstructor.prototype).webLinksInit = function (handler?: (event: MouseEvent, uri: string) => void, options?: ILinkMatcherOptions): void {
+    webLinksInit(this, handler, options);
+  };
+}
@@ -0,0 +1,14 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { Terminal } from 'xterm';
+
+export interface ITerminalCore {
+  buffer: any;
+}
+
+export interface IWinptyCompatAddonTerminal extends Terminal {
+  _core: ITerminalCore;
+}
@@ -1,5 +1,5 @@
 {
-  "name": "xterm.winptyCompat",
+  "name": "xterm.winptycompat",
  "main": "winptyCompat.js",
  "private": true
 }
@@ -5,6 +5,12 @@
    "rootDir": ".",
    "outDir": "../../../lib/addons/winptyCompat/",
    "sourceMap": true,
-    "removeComments": true
-  }
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
 }
@@ -5,14 +5,14 @@

 import { assert, expect } from 'chai';

-import * as winptyCompat from './winptyCompat'
+import * as winptyCompat from './winptyCompat';

 class MockTerminal {}

 describe('winptyCompat addon', () => {
  describe('apply', () => {
    it('should do register the `winptyCompatInit` method', () => {
-      winptyCompat.apply(MockTerminal);
+      winptyCompat.apply(<any>MockTerminal);
      assert.equal(typeof (<any>MockTerminal).prototype.winptyCompatInit, 'function');
    });
  });
@@ -3,36 +3,44 @@
 * @license MIT
 */

-export function winptyCompatInit(terminal): void {
-    // Don't do anything when the platform is not Windows
-    const isWindows = ['Windows', 'Win16', 'Win32', 'WinCE'].indexOf(navigator.platform) >= 0;
-    if (!isWindows) {
-      return;
+import { Terminal } from 'xterm';
+import { IWinptyCompatAddonTerminal } from './Interfaces';
+
+const CHAR_DATA_CODE_INDEX = 3;
+const NULL_CELL_CODE = 32;
+
+export function winptyCompatInit(terminal: Terminal): void {
+  const addonTerminal = <IWinptyCompatAddonTerminal>terminal;
+
+  // Don't do anything when the platform is not Windows
+  const isWindows = ['Windows', 'Win16', 'Win32', 'WinCE'].indexOf(navigator.platform) >= 0;
+  if (!isWindows) {
+    return;
+  }
+
+  // Winpty does not support wraparound mode which means that lines will never
+  // be marked as wrapped. This causes issues for things like copying a line
+  // retaining the wrapped new line characters or if consumers are listening
+  // in on the data stream.
+  //
+  // The workaround for this is to listen to every incoming line feed and mark
+  // the line as wrapped if the last character in the previous line is not a
+  // space. This is certainly not without its problems, but generally on
+  // Windows when text reaches the end of the terminal it's likely going to be
+  // wrapped.
+  addonTerminal.on('linefeed', () => {
+    const line = addonTerminal._core.buffer.lines.get(addonTerminal._core.buffer.ybase + addonTerminal._core.buffer.y - 1);
+    const lastChar = line.get(addonTerminal.cols - 1);
+
+    if (lastChar[CHAR_DATA_CODE_INDEX] !== NULL_CELL_CODE) {
+      const nextLine = addonTerminal._core.buffer.lines.get(addonTerminal._core.buffer.ybase + addonTerminal._core.buffer.y);
+      nextLine.isWrapped = true;
    }
-
-    // Winpty does not support wraparound mode which means that lines will never
-    // be marked as wrapped. This causes issues for things like copying a line
-    // retaining the wrapped new line characters or if consumers are listening
-    // in on the data stream.
-    //
-    // The workaround for this is to listen to every incoming line feed and mark
-    // the line as wrapped if the last character in the previous line is not a
-    // space. This is certainly not without its problems, but generally on
-    // Windows when text reaches the end of the terminal it's likely going to be
-    // wrapped.
-    terminal.on('linefeed', () => {
-      const line = terminal.buffer.lines.get(terminal.buffer.ybase + terminal.buffer.y - 1);
-      const lastChar = line[terminal.cols - 1];
-
-      if (lastChar[3] !== 32 /* ' ' */) {
-        const nextLine = terminal.buffer.lines.get(terminal.buffer.ybase + terminal.buffer.y);
-        (<any>nextLine).isWrapped = true;
-      }
-    });
+  });
 }

-export function apply(terminalConstructor) {
-  terminalConstructor.prototype.winptyCompatInit = function(): void {
+export function apply(terminalConstructor: typeof Terminal): void {
+  (<any>terminalConstructor.prototype).winptyCompatInit = function (): void {
    winptyCompatInit(this);
  };
 }
@@ -5,6 +5,12 @@
    "rootDir": ".",
    "outDir": "../../../lib/addons/zmodem/",
    "sourceMap": true,
-    "removeComments": true
-  }
+    "removeComments": true,
+    "declaration": true,
+    "preserveWatchOutput": true
+  },
+  "include": [
+    "**/*.ts",
+    "../../../typings/xterm.d.ts"
+  ]
 }
@@ -5,14 +5,14 @@

 import { assert, expect } from 'chai';

-import * as zmodem from './zmodem'
+import * as zmodem from './zmodem';

 class MockTerminal {}

 describe('zmodem addon', () => {
  describe('apply', () => {
    it('should do register the `zmodemAttach` method and `zmodemBrowser` attribute', () => {
-      zmodem.apply(MockTerminal);
+      zmodem.apply(<any>MockTerminal);
      assert.equal(typeof (<any>MockTerminal).prototype.zmodemAttach, 'function');
      assert.equal(typeof (<any>MockTerminal).prototype.zmodemBrowser, 'object');
    });
@@ -1,3 +1,10 @@
+/**
+ * Copyright (c) 2017 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { Terminal } from 'xterm';
+
 /**
 *
 * Allow xterm.js to handle ZMODEM uploads and downloads.
@@ -27,49 +34,43 @@
 *  via `detach()` and a re-`attach()`.)
 */

-let Zmodem;
+let zmodem;

-export function zmodemAttach(term, ws, opts) {
-  if (!opts) opts = {};
+export interface IZmodemOptions {
+  noTerminalWriteOutsideSession?: boolean;
+}

-  var senderFunc = function _ws_sender_func(octets) {
-    ws.send(new Uint8Array(octets));
-  };
+function zmodemAttach(ws: WebSocket, opts: IZmodemOptions = {}): void {
+  const term = this;
+  const senderFunc = (octets: ArrayLike<number>) => ws.send(new Uint8Array(octets));

-  var zsentry;
+  let zsentry;

-  function _shouldWrite() {
+  function shouldWrite(): boolean {
    return !!zsentry.get_confirmed_session() || !opts.noTerminalWriteOutsideSession;
  }

-  zsentry = new Zmodem.Sentry( {
-    to_terminal: function _to_terminal(octets) {
-      if (_shouldWrite()) {
+  zsentry = new zmodem.Sentry({
+    to_terminal: (octets: ArrayLike<number>) => {
+      if (shouldWrite()) {
        term.write(
          String.fromCharCode.apply(String, octets)
        );
      }
    },
-
    sender: senderFunc,
+    on_retract: () => (<any>term).emit('zmodemRetract'),
+    on_detect: (detection: any) => (<any>term).emit('zmodemDetect', detection)
+  });

-    on_retract: function _on_retract() {
-      term.emit('zmodemRetract');
-    },
+  function handleWSMessage(evt: MessageEvent): void {

-    on_detect: function _on_detect(detection) {
-      term.emit('zmodemDetect', detection);
-    },
-  } );
-
-  function handleWSMessage(evt) {
-
-    //In testing with xterm.js’s demo the first message was
-    //always text even if the rest were binary. While that
-    //may be specific to xterm.js’s demo, ultimately we
-    //should reject anything that isn’t binary.
+    // In testing with xterm.js’s demo the first message was
+    // always text even if the rest were binary. While that
+    // may be specific to xterm.js’s demo, ultimately we
+    // should reject anything that isn’t binary.
    if (typeof evt.data === 'string') {
-      if (_shouldWrite()) {
+      if (shouldWrite()) {
        term.write(evt.data);
      }
    }
@@ -82,9 +83,9 @@ export function zmodemAttach(term, ws, opts) {
  ws.addEventListener('message', handleWSMessage);
 }

-export function apply(terminalConstructor) {
-  Zmodem = (typeof window == 'object') ? (<any>window).ZModem : {Browser: null};  // Nullify browser for tests
+export function apply(terminalConstructor: typeof Terminal): void {
+  zmodem = (typeof window === 'object') ? (<any>window).Zmodem : {Browser: null};  // Nullify browser for tests

-  terminalConstructor.prototype.zmodemAttach = zmodemAttach.bind(this, this);
-  terminalConstructor.prototype.zmodemBrowser = Zmodem.Browser
+  (<any>terminalConstructor.prototype).zmodemAttach = zmodemAttach;
+  (<any>terminalConstructor.prototype).zmodemBrowser = zmodem.Browser;
 }
@@ -6,10 +6,6 @@
 import { assert } from 'chai';
 import { CircularList } from './CircularList';

-class TestCircularList<T> extends CircularList<T> {
-  public get array(): T[] { return this._array; }
-}
-
 describe('CircularList', () => {
  describe('push', () => {
    it('should push values onto the array', () => {
@@ -4,7 +4,7 @@
 */

 import { EventEmitter } from '../EventEmitter';
-import { ICircularList } from '../Interfaces';
+import { ICircularList } from '../Types';

 /**
 * Represents a circular list; a list with a maximum size that wraps around when push is called,
@@ -36,7 +36,7 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {

    // Reconstruct array, starting at index 0. Only transfer values from the
    // indexes 0 to length.
-    let newArray = new Array<T>(newMaxLength);
+    const newArray = new Array<T>(newMaxLength);
    for (let i = 0; i < Math.min(newMaxLength, this.length); i++) {
      newArray[i] = this._array[this._getCyclicIndex(i)];
    }
@@ -58,16 +58,6 @@ export class CircularList<T> extends EventEmitter implements ICircularList<T> {
    this._length = newLength;
  }

-  public get forEach(): (callbackfn: (value: T, index: number) => void) => void {
-    return (callbackfn: (value: T, index: number) => void) => {
-      let i = 0;
-      let length = this.length;
-      for (let i = 0; i < length; i++) {
-        callbackfn(this.get(i), i);
-      }
-    };
-  }
-
  /**
   * Gets the value at an index.
   *
@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { assert } from 'chai';
+import { Disposable } from './Lifecycle';
+
+class TestDisposable extends Disposable {
+  public get isDisposed(): boolean {
+    return this._isDisposed;
+  }
+}
+
+describe('Disposable', () => {
+  describe('register', () => {
+    it('should register disposables', () => {
+      const d = new TestDisposable();
+      const d2 = {
+        dispose: () => { throw new Error(); }
+      };
+      d.register(d2);
+      assert.throws(() => d.dispose());
+    });
+  });
+  describe('unregister', () => {
+    it('should unregister disposables', () => {
+      const d = new TestDisposable();
+      const d2 = {
+        dispose: () => { throw new Error(); }
+      };
+      d.register(d2);
+      d.unregister(d2);
+      assert.doesNotThrow(() => d.dispose());
+    });
+  });
+  describe('dispose', () => {
+    it('should set is disposed flag', () => {
+      const d = new TestDisposable();
+      assert.isFalse(d.isDisposed);
+      d.dispose();
+      assert.isTrue(d.isDisposed);
+    });
+  });
+});
@@ -0,0 +1,47 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+import { IDisposable } from 'xterm';
+
+/**
+ * A base class that can be extended to provide convenience methods for managing the lifecycle of an
+ * object and its components.
+ */
+export abstract class Disposable implements IDisposable {
+  protected _disposables: IDisposable[] = [];
+  protected _isDisposed: boolean = false;
+
+  constructor() {
+  }
+
+  /**
+   * Disposes the object, triggering the `dispose` method on all registered IDisposables.
+   */
+  public dispose(): void {
+    this._isDisposed = true;
+    this._disposables.forEach(d => d.dispose());
+    this._disposables.length = 0;
+  }
+
+  /**
+   * Registers a disposable object.
+   * @param d The disposable to register.
+   */
+  public register<T extends IDisposable>(d: T): void {
+    this._disposables.push(d);
+  }
+
+  /**
+   * Unregisters a disposable object if it has been registered, if not do
+   * nothing.
+   * @param d The disposable to unregister.
+   */
+  public unregister<T extends IDisposable>(d: T): void {
+    const index = this._disposables.indexOf(d);
+    if (index !== -1) {
+      this._disposables.splice(index, 1);
+    }
+  }
+}
@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+/**
+ * A keyboard event interface which does not depend on the DOM, KeyboardEvent implicitly extends
+ * this event.
+ */
+export interface IKeyboardEvent {
+  altKey: boolean;
+  ctrlKey: boolean;
+  shiftKey: boolean;
+  metaKey: boolean;
+  keyCode: number;
+  key: string;
+  type: string;
+}
@@ -76,4 +76,75 @@ export namespace C0 {
  export const SP  = '\x20';
  /** Delete (Caret = ^?) */
  export const DEL = '\x7f';
-};
+}
+
+/**
+ * C1 control codes
+ * See = https://en.wikipedia.org/wiki/C0_and_C1_control_codes
+ */
+export namespace C1 {
+  /** padding character */
+  export const PAD = '\x80';
+  /** High Octet Preset */
+  export const HOP = '\x81';
+  /** Break Permitted Here */
+  export const BPH = '\x82';
+  /** No Break Here */
+  export const NBH = '\x83';
+  /** Index */
+  export const IND = '\x84';
+  /** Next Line */
+  export const NEL = '\x85';
+  /** Start of Selected Area */
+  export const SSA = '\x86';
+  /** End of Selected Area */
+  export const ESA = '\x87';
+  /** Horizontal Tabulation Set */
+  export const HTS = '\x88';
+  /** Horizontal Tabulation With Justification */
+  export const HTJ = '\x89';
+  /** Vertical Tabulation Set */
+  export const VTS = '\x8a';
+  /** Partial Line Down */
+  export const PLD = '\x8b';
+  /** Partial Line Up */
+  export const PLU = '\x8c';
+  /** Reverse Index */
+  export const RI = '\x8d';
+  /** Single-Shift 2 */
+  export const SS2 = '\x8e';
+  /** Single-Shift 3 */
+  export const SS3 = '\x8f';
+  /** Device Control String */
+  export const DCS = '\x90';
+  /** Private Use 1 */
+  export const PU1 = '\x91';
+  /** Private Use 2 */
+  export const PU2 = '\x92';
+  /** Set Transmit State */
+  export const STS = '\x93';
+  /** Destructive backspace, intended to eliminate ambiguity about meaning of BS. */
+  export const CCH = '\x94';
+  /** Message Waiting */
+  export const MW = '\x95';
+  /** Start of Protected Area */
+  export const SPA = '\x96';
+  /** End of Protected Area */
+  export const EPA = '\x97';
+  /** Start of String */
+  export const SOS = '\x98';
+  /** Single Graphic Character Introducer */
+  export const SGCI = '\x99';
+  /** Single Character Introducer */
+  export const SCI = '\x9a';
+  /** Control Sequence Introducer */
+  export const CSI = '\x9b';
+  /** String Terminator */
+  export const ST = '\x9c';
+  /** Operating System Command */
+  export const OSC = '\x9d';
+  /** Privacy Message */
+  export const PM = '\x9e';
+  /** Application Program Command */
+  export const APC = '\x9f';
+}
@@ -0,0 +1,21 @@
+/**
+ * Copyright (c) 2018 The xterm.js authors. All rights reserved.
+ * @license MIT
+ */
+
+export const enum KeyboardResultType {
+  SEND_KEY,
+  SELECT_ALL,
+  PAGE_UP,
+  PAGE_DOWN
+}
+
+export interface IKeyboardResult {
+  type: KeyboardResultType;
+  cancel: boolean;
+  key: string | undefined;
+}
+
+export interface ICharset {
+  [key: string]: string;
+}
--- a/Show More
+++ b/Show More