Collapse description into either value or name, and value into name if duplicated.

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');
@@ skipping 977 matching lines @@
         options.annotation.push(new Output.NodeSpan(node));
 
       // Process token based on prefix.
       var prefix = token[0];
       token = token.slice(1);
 
       // All possible tokens based on prefix.
       if (prefix == '$') {
         if (token == 'value') {
           var text = node.value;
+          if (!node.state.editable && node.name == text)
+            return;
           if (text !== undefined) {
             if (node.textSelStart !== undefined) {
               options.annotation.push(new Output.SelectionSpan(
                   node.textSelStart,
                   node.textSelEnd));
             }
           }
           options.annotation.push(token);
           this.append_(buff, text, options);
         } else if (token == 'name') {
           options.annotation.push(token);
           var earcon = node ? this.findEarcon_(node, opt_prevNode) : null;
           if (earcon)
             options.annotation.push(earcon);
           this.append_(buff, node.name, options);
         } else if (token == 'nameFromNode') {
           if (chrome.automation.NameFromType[node.nameFrom] ==
               'nameFromContents')
             return;
 
           options.annotation.push('name');
           this.append_(buff, node.name, options);
         } else if (token == 'nameOrDescendants') {
           options.annotation.push(token);
           if (node.name)
             this.append_(buff, node.name, options);
           else
             this.format_(node, '$descendants', buff);
+        } else if (token == 'description') {
+          if (node.name == node.description || node.value == node.description)
+            return;
+          options.annotation.push(token);
+          this.append_(buff, node.description, options);
         } else if (token == 'indexInParent') {
           options.annotation.push(token);
           this.append_(buff, String(node.indexInParent + 1));
         } else if (token == 'parentChildCount') {
           options.annotation.push(token);
           if (node.parent)
             this.append_(buff, String(node.parent.children.length));
         } else if (token == 'state') {
           options.annotation.push(token);
           Object.getOwnPropertyNames(node.state).forEach(function(s) {
@@ skipping 391 matching lines @@
   /**
    * Appends output to the |buff|.
    * @param {!Array<Spannable>} buff
    * @param {string|!Spannable} value
    * @param {{isUnique: (boolean|undefined),
    *      annotation: !Array<*>}=} opt_options
    */
   append_: function(buff, value, opt_options) {
     opt_options = opt_options || {isUnique: false, annotation: []};
 
-    // Reject empty values without annotations.
-    if ((!value || value.length == 0) && opt_options.annotation.length == 0)
+    // Reject empty values without meaningful annotations.
+    if ((!value || value.length == 0) && opt_options.annotation.every(
+        function(a) {
+          return !(a instanceof Output.Action) &&
+              !(a instanceof Output.SelectionSpan);
+
+        }))
       return;
 
     var spannableToAdd = new Spannable(value);
     opt_options.annotation.forEach(function(a) {
       spannableToAdd.setSpan(a, 0, spannableToAdd.length);
     });
 
     // |isUnique| specifies an annotation that cannot be duplicated.
     if (opt_options.isUnique) {
       var annotationSansNodes = opt_options.annotation.filter(
@@ skipping 148 matching lines @@
           break;
         }
         earconFinder = earconFinder.parent;
       }
     }
     return null;
   }
 };
 
 });  // goog.scope