chrome/browser/resources/chromeos/chromevox/common/earcon_util.js

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 /**
   6  * @fileoverview Earcon utils.
   7  */
   8
   9 goog.provide('cvox.EarconUtil');
  10
  11 goog.require('cvox.AbstractEarcons');
  12 goog.require('cvox.AriaUtil');
  13 goog.require('cvox.DomUtil');
  14
  15 /**
  16  * Returns the id of an earcon to play along with the description for a node.
  17  *
  18  * @param {Node} node The node to get the earcon for.
  19  * @return {number?} The earcon id, or null if none applies.
  20  */
  21 cvox.EarconUtil.getEarcon = function(node) {
  22   var earcon = cvox.AriaUtil.getEarcon(node);
  23   if (earcon != null) {
  24     return earcon;
  25   }
  26
  27   switch (node.tagName) {
  28     case 'BUTTON':
  29       return cvox.AbstractEarcons.BUTTON;
  30     case 'A':
  31       if (node.hasAttribute('href')) {
  32         return cvox.AbstractEarcons.LINK;
  33       }
  34       break;
  35     case 'IMG':
  36       if (cvox.DomUtil.hasLongDesc(node)) {
  37         return cvox.AbstractEarcons.LONG_DESC;
  38       }
  39       break;
  40     case 'LI':
  41       return cvox.AbstractEarcons.LIST_ITEM;
  42     case 'SELECT':
  43       return cvox.AbstractEarcons.LISTBOX;
  44     case 'TEXTAREA':
  45       return cvox.AbstractEarcons.EDITABLE_TEXT;
  46     case 'INPUT':
  47       switch (node.type) {
  48         case 'button':
  49         case 'submit':
  50         case 'reset':
  51           return cvox.AbstractEarcons.BUTTON;
  52         case 'checkbox':
  53         case 'radio':
  54           if (node.checked) {
  55             return cvox.AbstractEarcons.CHECK_ON;
  56           } else {
  57             return cvox.AbstractEarcons.CHECK_OFF;
  58           }
  59         default:
  60           if (cvox.DomUtil.isInputTypeText(node)) {
  61             // 'text', 'password', etc.
  62             return cvox.AbstractEarcons.EDITABLE_TEXT;
  63           }
  64       }
  65   }
  66   return null;
  67 };