Suppress value changed events on text fields/text areas.

chrome/browser/resources/chromeos/chromevox/cvox2/background/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 The entry point for all ChromeVox2 related code for the
  * background page.
  */
 
 goog.provide('Background');
@@ skipping 44 matching lines @@
   }
 
   /**
    * Maps an automation event to its listener.
    * @type {!Object<EventType, function(Object) : void>}
    */
   this.listeners_ = {
     alert: this.onEventDefault,
     focus: this.onEventDefault,
     hover: this.onEventDefault,
+    loadComplete: this.onLoadComplete,
     menuStart: this.onEventDefault,
     menuEnd: this.onEventDefault,
     menuListValueChanged: this.onEventDefault,
-    loadComplete: this.onLoadComplete,
     textChanged: this.onTextOrTextSelectionChanged,
     textSelectionChanged: this.onTextOrTextSelectionChanged,
-    valueChanged: this.onEventDefault
+    valueChanged: this.onValueChanged
   };
 
   // Register listeners for ...
   // Desktop.
   chrome.automation.getDesktop(this.onGotDesktop);
 };
 
 Background.prototype = {
   /**
    * Handles all setup once a new automation tree appears.
@@ skipping 231 matching lines @@
               cvox.ChromeVox.tts);
     }
 
     this.editableTextHandler.changed(textChangeEvent);
     new Output().withBraille(
             this.currentRange_, null, evt.type)
         .go();
   },
 
   /**
+   * Provides all feedback once a value changed event fires.
+   * @param {Object} evt
+   */
+  onValueChanged: function(evt) {
+    // Don't process nodes inside of web content if ChromeVox Next is inactive.
+    if (evt.target.root.role != chrome.automation.RoleType.desktop &&
+        !this.active_)
+      return;
+
+    if (!evt.target.state.focused)
+      return;
+
+    // Value change events fire on web text fields and text areas when pressing
+    // enter; suppress them.
+    if (!this.currentRange_ ||
+        evt.target.role != chrome.automation.RoleType.textField) {
+      this.onEventDefault(evt);
+      this.currentRange_ = cursors.Range.fromNode(evt.target);
+    }
+  },
+
+  /**
    * Called when the automation tree is changed.
    * @param {chrome.automation.TreeChange} treeChange
    */
   onTreeChange: function(treeChange) {
     var node = treeChange.target;
     if (!node.containerLiveStatus)
       return;
 
     if (node.containerLiveRelevant.indexOf('additions') >= 0 &&
         treeChange.type == 'nodeCreated')
@@ skipping 80 matching lines @@
         }.bind(this));
       }
     }.bind(this));
   }
 };
 
 /** @type {Background} */
 global.backgroundObj = new Background();
 
 });  // goog.scope