Invalidate the text edit handler on selection events

chrome/browser/resources/chromeos/chromevox/cvox2/background/desktop_automation_handler.js

 // Copyright 2015 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 Handles automation from a desktop automation node.
  */
 
 goog.provide('DesktopAutomationHandler');
 
@@ skipping 410 matching lines @@
   onScrollPositionChanged: function(evt) {
     var currentRange = ChromeVoxState.instance.currentRange;
     if (currentRange && currentRange.isValid() && this.shouldOutput_(evt))
       new Output().withLocation(currentRange, null, evt.type).go();
   },
 
   /**
    * @param {!AutomationEvent} evt
    */
   onSelection: function(evt) {
+    // Invalidate any previous editable text handler state since some nodes,
+    // like menuitems, can receive selection while focus remains on an editable
+    // leading to braille output routing to the editable.
+    this.textEditHandler_ = null;
+
     chrome.automation.getFocus(function(focus) {
       // Desktop tabs get "selection" when there's a focused webview during tab
       // switching.
       if (focus.role == RoleType.webView && evt.target.role == RoleType.tab) {
         ChromeVoxState.instance.setCurrentRange(
             cursors.Range.fromNode(focus.firstChild));
         return;
       }
 
       // Some cases (e.g. in overview mode), require overriding the assumption
@@ skipping 67 matching lines @@
 DesktopAutomationHandler.init_ = function() {
   chrome.automation.getDesktop(function(desktop) {
     ChromeVoxState.desktopAutomationHandler =
         new DesktopAutomationHandler(desktop);
   });
 };
 
 DesktopAutomationHandler.init_();
 
 });  // goog.scope