Add multiline braille support.

chrome/browser/resources/chromeos/chromevox/braille/braille_display_manager.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 Puts text on a braille display.
  *
  */
 
 goog.provide('cvox.BrailleDisplayManager');
@@ skipping 49 matching lines @@
    */
   this.commandListener_ = function() {};
   /**
    * Current display state used for width calculations.  This is different from
    * realDisplayState_ if the braille captions feature is enabled and there is
    * no hardware display connected.  Otherwise, it is the same object
    * as realDisplayState_.
    * @type {!cvox.BrailleDisplayState}
    * @private
    */
-  this.displayState_ = {available: false, textCellCount: undefined};
+  this.displayState_ = {available: false, textRowCount: undefined,
+      textColumnCount: undefined};
   /**
    * State reported from the chrome api, reflecting a real hardware
    * display.
    * @type {!cvox.BrailleDisplayState}
    * @private
    */
   this.realDisplayState_ = this.displayState_;
   /**
    * @type {!Array<number>}
    * @private
@@ skipping 69 matching lines @@
 };
 
 
 /**
  * @param {!cvox.BrailleDisplayState} newState Display state reported
  *     by the extension API.
  * @private
  */
 cvox.BrailleDisplayManager.prototype.refreshDisplayState_ = function(
     newState) {
-  var oldSize = this.displayState_.textCellCount || 0;
+  var oldSize = this.displayState_.textColumnCount *
+                this.displayState_.textRowCount || 0;
   this.realDisplayState_ = newState;
   if (newState.available) {
     this.displayState_ = newState;
   } else {
     this.displayState_ =
         cvox.BrailleCaptionsBackground.getVirtualDisplayState();
   }
-  var newSize = this.displayState_.textCellCount || 0;
+  var newSize = this.displayState_.textColumnCount *
+                this.displayState_.textRowCount || 0;
   if (oldSize != newSize) {
     this.panStrategy_.setDisplaySize(newSize);
   }
   this.refresh_();
 };
 
 
 /**
  * Called when the state of braille captions changes.
  * @private
  */
 cvox.BrailleDisplayManager.prototype.onCaptionsStateChanged_ = function() {
   // Force reevaluation of the display state based on our stored real
   // hardware display state, meaning that if a real display is connected,
   // that takes precedence over the state from the captions 'virtual' display.
   this.refreshDisplayState_(this.realDisplayState_);
 };
 
 
 /** @private */
 cvox.BrailleDisplayManager.prototype.refresh_ = function() {
   if (!this.displayState_.available) {
     return;
   }
   var viewPort = this.panStrategy_.viewPort;
   var buf = this.displayedContent_.slice(viewPort.start, viewPort.end);
   if (this.realDisplayState_.available) {
-    chrome.brailleDisplayPrivate.writeDots(buf);
+    chrome.brailleDisplayPrivate.writeDots(buf, buf.byteLength, 1);
   }
   if (cvox.BrailleCaptionsBackground.isEnabled()) {
     var start = this.brailleToTextPosition_(viewPort.start);
     var end = this.brailleToTextPosition_(viewPort.end);
     cvox.BrailleCaptionsBackground.setContent(
         this.content_.text.toString().substring(start, end), buf,
         this.brailleToText_);
   }
 };
 
@@ skipping 174 matching lines @@
 };
 
 
 /**
  * @param {boolean} wordWrap
  * @private
  */
 cvox.BrailleDisplayManager.prototype.updatePanStrategy_ = function(wordWrap) {
   var newStrategy = wordWrap ? new cvox.WrappingPanStrategy() :
       new cvox.FixedPanStrategy();
-  newStrategy.setDisplaySize(this.displayState_.textCellCount || 0);
+  newStrategy.setDisplaySize(this.displayState_.textColumnCount || 0);
   newStrategy.setContent(this.translatedContent_,
                          this.panStrategy_.viewPort.start);
   this.panStrategy_ = newStrategy;
   this.refresh_();
 };