chrome/browser/resources/options/chromeos/pointer_overlay.js

   1 // Copyright (c) 2012 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 cr.define('options', function() {
   6   /** @const */ var SettingsDialog = options.SettingsDialog;
   7
   8   /**
   9    * PointerOverlay class
  10    * Dialog that allows users to set pointer settings (touchpad/mouse).
  11    * @constructor
  12    * @extends {options.SettingsDialog}
  13    */
  14   function PointerOverlay() {
  15     // The title is updated dynamically in the setTitle method as pointer
  16     // devices are discovered or removed.
  17     SettingsDialog.call(this, 'pointer-overlay',
  18         '', 'pointer-overlay',
  19         assertInstanceof($('pointer-overlay-confirm'), HTMLButtonElement),
  20         assertInstanceof($('pointer-overlay-cancel'), HTMLButtonElement));
  21   }
  22
  23   cr.addSingletonGetter(PointerOverlay);
  24
  25   PointerOverlay.prototype = {
  26     __proto__: SettingsDialog.prototype,
  27   };
  28
  29   /**
  30    * Sets the visibility state of the touchpad group.
  31    * @param {boolean} show True to show, false to hide.
  32    */
  33   PointerOverlay.showTouchpadControls = function(show) {
  34     $('pointer-section-touchpad').hidden = !show;
  35   };
  36
  37   /**
  38    * Sets the visibility state of the mouse group.
  39    * @param {boolean} show True to show, false to hide.
  40    */
  41   PointerOverlay.showMouseControls = function(show) {
  42     $('pointer-section-mouse').hidden = !show;
  43   };
  44
  45   /**
  46    * Updates the title of the pointer dialog.  The title is set dynamically
  47    * based on whether a touchpad, mouse or both are present.  The label on the
  48    * button that activates the overlay is also updated to stay in sync. A
  49    * message is displayed in the main settings page if no pointer devices are
  50    * available.
  51    * @param {string} label i18n key for the overlay title.
  52    */
  53   PointerOverlay.setTitle = function(label) {
  54     var button = $('pointer-settings-button');
  55     var noPointersLabel = $('no-pointing-devices');
  56     if (label.length > 0) {
  57       var title = loadTimeData.getString(label);
  58       button.textContent = title;
  59       button.hidden = false;
  60       noPointersLabel.hidden = true;
  61     } else {
  62       button.hidden = true;
  63       noPointersLabel.hidden = false;
  64     }
  65   };
  66
  67   // Export
  68   return {
  69     PointerOverlay: PointerOverlay
  70   };
  71 });