Support braille dot or chorded typing conversions to standard keyboard keys

chrome/browser/resources/chromeos/chromevox/host/chrome/braille_background.js

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview Sends Braille commands to the Braille API.
  */
 
 goog.provide('cvox.BrailleBackground');
 
+goog.require('BrailleKeyEventRewriter');
 goog.require('ChromeVoxState');
 goog.require('cvox.BrailleDisplayManager');
 goog.require('cvox.BrailleInputHandler');
 goog.require('cvox.BrailleInterface');
 goog.require('cvox.BrailleKeyEvent');
 goog.require('cvox.BrailleTranslatorManager');
 
-
 /**
  * @constructor
  * @param {cvox.BrailleDisplayManager=} opt_displayManagerForTest
  *        Display manager (for mocking in tests).
  * @param {cvox.BrailleInputHandler=} opt_inputHandlerForTest Input handler
  *        (for mocking in tests).
  * @param {cvox.BrailleTranslatorManager=} opt_translatorManagerForTest
  *        Braille translator manager (for mocking in tests)
  * @implements {cvox.BrailleInterface}
  */
@@ skipping 25 matching lines @@
   /**
    * @type {!cvox.BrailleInputHandler}
    * @private
    */
   this.inputHandler_ = opt_inputHandlerForTest ||
       new cvox.BrailleInputHandler(this.translatorManager_);
   this.inputHandler_.init();
 
   /** @private {boolean} */
   this.frozen_ = false;
+
+  /** @private {BrailleKeyEventRewriter} */
+  this.keyEventRewriter_ = new BrailleKeyEventRewriter();
 };
 goog.addSingletonGetter(cvox.BrailleBackground);
 
 
 /** @override */
 cvox.BrailleBackground.prototype.write = function(params) {
   if (this.frozen_) {
     return;
   }
   this.setContent_(params, null);
@@ skipping 68 matching lines @@
 
 /**
  * Handles braille key events by dispatching either to the input handler,
  * ChromeVox next's background object or ChromeVox classic's content script.
  * @param {!cvox.BrailleKeyEvent} brailleEvt The event.
  * @param {!cvox.NavBraille} content Content of display when event fired.
  * @private
  */
 cvox.BrailleBackground.prototype.onBrailleKeyEvent_ = function(
     brailleEvt, content) {
+  if (this.keyEventRewriter_.onBrailleKeyEvent(brailleEvt)) {
+    return;
+  }
+
   if (this.inputHandler_.onBrailleKeyEvent(brailleEvt)) {
     return;
   }
   if (ChromeVoxState.instance &&
       ChromeVoxState.instance.onBrailleKeyEvent(brailleEvt, content)) {
     return;
   }
   this.sendCommand_(brailleEvt, content);
 };
 
 
 /**
  * Dispatches braille input commands to the content script.
  * @param {!cvox.BrailleKeyEvent} brailleEvt The event.
  * @param {cvox.NavBraille} content Content of display when event fired.
  * @private
  */
 cvox.BrailleBackground.prototype.sendCommand_ =
     function(brailleEvt, content) {
   var msg = {
     'message': 'BRAILLE',
     'args': brailleEvt
   };
   if (content === this.lastContent_) {
     msg.contentId = this.lastContentId_;
   }
   cvox.ExtensionBridge.send(msg);
 };