Less strict checked state changes and introduce disabled state for content

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 111 matching lines @@
       // Delegate event handling to the text edit handler for braille.
       this.textEditHandler_.onEvent(evt);
     }
     output.go();
   },
 
   /**
    * @param {!AutomationEvent} evt
    */
   onEventIfInRange: function(evt) {
-    // TODO(dtseng): Consider the end of the current range as well.
-    if (AutomationUtil.isDescendantOf(
-        ChromeVoxState.instance.currentRange.start.node, evt.target) ||
-            evt.target.state.focused)
-      this.onEventDefault(evt);
+    if (evt.target.root.role != RoleType.desktop &&
+        ChromeVoxState.instance.mode === ChromeVoxMode.CLASSIC)
+      return;
+
+    var prev = ChromeVoxState.instance.currentRange;
+    if (AutomationUtil.isDescendantOf(prev.start.node, evt.target) ||
+        AutomationUtil.isDescendantOf(evt.target, prev.start.node) ||
+        evt.target.state.focused) {
+      // Intentionally skip setting range.
+      new Output()
+          .withRichSpeechAndBraille(cursors.Range.fromNode(evt.target),
+                                    prev,
+                                    Output.EventType.NAVIGATE)
+          .go();
+    }
   },
 
   /**
    * @param {!AutomationEvent} evt
    */
   onEventIfSelected: function(evt) {
     if (evt.target.state.selected)
       this.onEventDefault(evt);
   },
 
@@ skipping 268 matching lines @@
 DesktopAutomationHandler.init_ = function() {
   chrome.automation.getDesktop(function(desktop) {
     ChromeVoxState.desktopAutomationHandler =
         new DesktopAutomationHandler(desktop);
   });
 };
 
 DesktopAutomationHandler.init_();
 
 });  // goog.scope