Implemented the attach addon

addons/attach/attach.js

@@ -0,0 +1,23 @@
+/*
+ * Implements the attach method, that
+ * attaches the terminal to a WebSocket stream.
+ * 
+ * The bidirectional argument indicates, whether the terminal should
+ * send data to the socket as well and is true, by default.
+ */
+Terminal.prototype.attach = function (socket, bidirectional) {
+  var term = this;
+  
+  bidirectional = (typeof bidirectional == 'undefined') ? true : bidirectional;
+  this.socket = socket;
+  
+  socket.addEventListener('message', function (ev) {
+    term.write(ev.data);
+  });
+  
+  if (bidirectional) {
+    this.on('data', function (data) {
+      socket.send(data);
+    });
+  }
+}

addons/attach/index.html

@@ -0,0 +1,38 @@
+<!doctype html>
+<html>
+  <head>
+    <link rel="stylesheet" href="../../src/xterm.css" />
+    <link rel="stylesheet" href="../../demo/style.css" />
+    <script src="../../src/xterm.js"></script>
+    <script src="attach.js"></script>
+  </head>
+  <body>
+    <form id="socket-form">
+      <input id="socket-url"
+             type="text"
+             placeholder="Enter socket url (e.g. ws://mysock)"
+             autofocus />
+      <button>
+        Attach
+      </button>
+    </form>
+    <div id="terminal-container"></div>
+    <script>
+      var term = new Terminal(),
+          container = document.getElementById('terminal-container'),
+          socketUrl = document.getElementById('socket-url'),
+          socketForm = document.getElementById('socket-form');
+      
+      socketForm.addEventListener('submit', function (ev) {
+        ev.preventDefault();
+        var url = socketUrl.value,
+            sock = new WebSocket(url);
+        sock.addEventListener('open', function () {
+          term.attach(sock);
+        });
+      });
+      
+      term.open(container);
+    </script>
+  </body>
+</html>