Add ChromeVox panel and implement caption display functionality.

chrome/browser/resources/chromeos/chromevox/cvox2/background/output.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 Provides output services for ChromeVox.
  */
 
 goog.provide('Output');
 goog.provide('Output.EventType');
 
 goog.require('AutomationUtil.Dir');
 goog.require('EarconEngine');
+goog.require('Panel');
 goog.require('cursors.Cursor');
 goog.require('cursors.Range');
 goog.require('cursors.Unit');
 goog.require('cvox.AbstractEarcons');
 goog.require('cvox.NavBraille');
 goog.require('cvox.Spannable');
 goog.require('cvox.ValueSelectionSpan');
 goog.require('cvox.ValueSpan');
 goog.require('goog.i18n.MessageFormat');
 
@@ skipping 677 matching lines @@
           }
         };
       }.bind(this)());
 
       if (this.speechEndCallback_ && i == a.length - 1)
         this.speechProperties_['endCallback'] = this.speechEndCallback_;
       else
         this.speechProperties_['endCallback'] = null;
       cvox.ChromeVox.tts.speak(
           buff.toString(), queueMode, this.speechProperties_);
+      if (queueMode == cvox.QueueMode.FLUSH)
+          (new PanelCommand(PanelCommandType.CLEAR_SPEECH)).send();
+      if (this.speechProperties_.relativePitch ==
+              cvox.AbstractTts.PERSONALITY_ANNOTATION.relativePitch) {
+        (new PanelCommand(
+            PanelCommandType.ADD_ANNOTATION_SPEECH,
+            buff.toString())).send();
+      } else {
+        (new PanelCommand(
+            PanelCommandType.ADD_NORMAL_SPEECH,
+            buff.toString())).send();
+      }

[Peter Lundblad, 2015/11/06 15:00:58]

Why is this needed here in addition to background_tts.js?

[dmazzoni, 2015/11/06 21:01:00]

I was thinking we could provide more detailed information here. But for now I'll
delete this for simplicity.

       queueMode = cvox.QueueMode.QUEUE;
     }.bind(this));
 
     // Braille.
     if (this.brailleBuffer_.length) {
       var buff = this.createBrailleOutput_();
       var selSpan =
           buff.getSpanInstanceOf(Output.SelectionSpan);
       var startIndex = -1, endIndex = -1;
       if (selSpan) {
@@ skipping 604 matching lines @@
             elem.end);
       });
       spansToRemove.forEach(result.removeSpan.bind(result));
       separator = Output.SPACE;
     });
     return result;
   }
 };
 
 });  // goog.scope