[fit addon] Introduce proposeGeometry method

- Introduce new method to propose optimal geometry for the current terminal
- Bump version to 0.23

addons/fit/fit.js

@@ -24,36 +24,47 @@
         fit(this.Xterm);
     }
 })(function (Xterm) {
+    Xterm.prototype.proposeGeometry = function () {
+        var container = this.rowContainer,
+            subjectRow = this.rowContainer.firstElementChild,
+            rows,
+            contentBuffer,
+            characterWidth,
+            cols;
+
+        subjectRow.style.display = 'inline';
+
+        contentBuffer = subjectRow.textContent;
+
+        subjectRow.innerHTML = ' '; /* Arbitrary character to calculate its dimensions */
+        characterWidth = parseInt(subjectRow.offsetWidth);
+        characterHeight = parseInt(subjectRow.offsetHeight);
+
+        subjectRow.style.display = '';
+
+        cols = container.offsetWidth / characterWidth;
+        cols = parseInt(cols);
+
+        var parentElementStyle = window.getComputedStyle(this.element.parentElement),
+            parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height')),
+            elementStyle = window.getComputedStyle(this.element),
+            elementPadding = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom')),
+            availableHeight = parentElementHeight - elementPadding,
+            rowHeight = this.rowContainer.firstElementChild.offsetHeight;
+
+        rows = parseInt(availableHeight / rowHeight);
+        
+        var geometry = {
+                'cols': cols,
+                'rows': rowss
+            };
+
+        return geometry;
+    };
+
     Xterm.prototype.fit = function () {
-      var container = this.rowContainer,
-          subjectRow = this.rowContainer.firstElementChild,
-          rows,
-          contentBuffer,
-          characterWidth,
-          cols;
+        var geometry = this.proposeGeometry();
 
-      subjectRow.style.display = 'inline';
-
-      contentBuffer = subjectRow.textContent;
-
-      subjectRow.innerHTML = ' '; /* Arbitrary character to calculate its dimensions */
-      characterWidth = parseInt(subjectRow.offsetWidth);
-      characterHeight = parseInt(subjectRow.offsetHeight);
-
-      subjectRow.style.display = '';
-
-      cols = container.offsetWidth / characterWidth;
-      cols = parseInt(cols);
-
-      var parentElementStyle = window.getComputedStyle(this.element.parentElement),
-          parentElementHeight = parseInt(parentElementStyle.getPropertyValue('height')),
-          elementStyle = window.getComputedStyle(this.element),
-          elementPadding = parseInt(elementStyle.getPropertyValue('padding-top')) + parseInt(elementStyle.getPropertyValue('padding-bottom')),
-          availableHeight = parentElementHeight - elementPadding,
-          rowHeight = this.rowContainer.firstElementChild.offsetHeight;
-
-      rows = parseInt(availableHeight / rowHeight);
-
-      this.resize(cols, rows);
+        this.resize(geometry.cols, geometry.rows);
     };
 });

bower.json

@@ -1,5 +1,5 @@
 {
   "name": "xterm.js",
-  "version": "0.22",
+  "version": "0.23",
   "ignore": ["demo", "docs", "test", ".gitignore"]
 }

demo/main.js

@@ -1,12 +1,13 @@
 var terminalContainer = document.getElementById('terminal-container'),
-    term = new Terminal();
+    term = new Terminal(),
+    prompt = '> ';
 
 term.open(terminalContainer);
 term.fit();
 
 term.prompt = function () {
-  term.write('\r\n> ');
-}
+  term.write('\r\n' + prompt);
+};
 
 term.writeln('Welcome to xterm.js');
 term.writeln('Just type some keys in the prompt below.');
@@ -19,7 +20,12 @@ term.on('key', function (key, ev) {
   if (ev.keyIdentifier == 'Enter') {
     term.prompt();
   } else if (ev.keyCode == 8) {
-    term.write('\b \b');
+    /*
+     * Do not delete the prompt
+     */
+    if (term.x > 2) {
+      term.write('\b \b');
+    }
   } else if (printable) {
     term.write(key);
   }

docs/conf.py

@@ -51,9 +51,9 @@ copyright = u'2014, SourceLair Limited'
 # built documents.
 #
 # The short X.Y version.
-version = '0.22'
+version = '0.23'
 # The full version, including alpha/beta/rc tags.
-release = '0.22 Alpha'
+release = '0.23 Alpha'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.