Finish implementing ChromeVox Next active indicator.

chrome/renderer/resources/extensions/automation/automation_node.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.
 
 var AutomationEvent = require('automationEvent').AutomationEvent;
 var automationInternal =
     require('binding').Binding.create('automationInternal').generate();
 var exceptionHandler = require('uncaught_exception_handler');
 var IsInteractPermitted =
     requireNative('automationInternal').IsInteractPermitted;
@@ skipping 106 matching lines @@
  * @param {number} axTreeID The id of the accessibility tree.
  * @param {number} nodeID The id of a node.
  * @return {?automation.Rect} The location of the node, or undefined if
  *     the tree or node wasn't found.
  */
 var GetLocation = requireNative('automationInternal').GetLocation;
 
 /**
  * @param {number} axTreeID The id of the accessibility tree.
  * @param {number} nodeID The id of a node.
+ * @param {number} startIndex The start index of the range.
+ * @param {number} endIndex The end index of the range.
+ * @return {?automation.Rect} The bounding box of the subrange of this node,

[Peter Lundblad, 2015/11/20 11:15:03]

FWIW, the file is consistently wrong when it comes to these annotations.
The question mark means nullable, but the prose talks about undefined.
Feel free to ignore in this cl, but we should clean it up.
Also, the question mark would be redundant for an object.

[dmazzoni, 2015/11/20 23:35:15]

Acknowledged.

+ *     or the location if there are no subranges, or undefined if
+ *     the tree or node wasn't found.
+ */
+var GetBoundsForRange = requireNative('automationInternal').GetBoundsForRange;
+
+/**
+ * @param {number} axTreeID The id of the accessibility tree.
+ * @param {number} nodeID The id of a node.
  * @param {string} attr The name of a string attribute.
  * @return {?string} The value of this attribute, or undefined if the tree,
  *     node, or attribute wasn't found.
  */
 var GetStringAttribute = requireNative('automationInternal').GetStringAttribute;
 
 /**
  * @param {number} axTreeID The id of the accessibility tree.
  * @param {number} nodeID The id of a node.
  * @param {string} attr The name of an attribute.
@@ skipping 78 matching lines @@
   },
 
   get role() {
     return GetRole(this.treeID, this.id);
   },
 
   get location() {
     return GetLocation(this.treeID, this.id);
   },
 
+  boundsForRange: function(startIndex, endIndex) {
+    return GetBoundsForRange(this.treeID, this.id, startIndex, endIndex);
+  },
+
   get indexInParent() {
     return GetIndexInParent(this.treeID, this.id);
   },
 
   get childTree() {
     var childTreeID = GetIntAttribute(this.treeID, this.id, 'childTreeId');
     if (childTreeID)
       return AutomationRootNodeImpl.get(childTreeID);
   },
 
@@ skipping 693 matching lines @@
                                                 'find',
                                                 'findAll',
                                                 'focus',
                                                 'makeVisible',
                                                 'matches',
                                                 'setSelection',
                                                 'showContextMenu',
                                                 'addEventListener',
                                                 'removeEventListener',
                                                 'domQuerySelector',
-                                                'toString' ],
+                                                'toString',
+                                                'boundsForRange'],
                                     readonly: publicAttributes.concat(
                                               ['parent',
                                                'firstChild',
                                                'lastChild',
                                                'children',
                                                'previousSibling',
                                                'nextSibling',
                                                'isRootNode',
                                                'role',
                                                'state',
@@ skipping 20 matching lines @@
 AutomationRootNode.getOrCreate = function(treeID) {
   return AutomationRootNodeImpl.getOrCreate(treeID);
 }
 
 AutomationRootNode.destroy = function(treeID) {
   AutomationRootNodeImpl.destroy(treeID);
 }
 
 exports.AutomationNode = AutomationNode;
 exports.AutomationRootNode = AutomationRootNode;