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      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 FocusOutlineManager = cr.ui.FocusOutlineManager;
      7 
      8   var OptionsPage = {
      9     /**
     10      * This is the absolute difference maintained between standard and
     11      * fixed-width font sizes. Refer http://crbug.com/91922.
     12      * @const
     13      */
     14     SIZE_DIFFERENCE_FIXED_STANDARD: 3,
     15 
     16     /**
     17      * Initializes the complete options page. This will cause all C++ handlers
     18      * to be invoked to do final setup.
     19      */
     20     initialize: function() {
     21       chrome.send('coreOptionsInitialize');
     22     },
     23 
     24     /**
     25      * Shows the tab contents for the given navigation tab.
     26      * @param {Node} tab The tab that the user clicked.
     27      */
     28     showTab: function(tab) {
     29       // Search parents until we find a tab, or the nav bar itself. This allows
     30       // tabs to have child nodes, e.g. labels in separately-styled spans.
     31       while (tab && tab.classList &&
     32              !tab.classList.contains('subpages-nav-tabs') &&
     33              !tab.classList.contains('tab')) {
     34         tab = tab.parentNode;
     35       }
     36       if (!tab || !tab.classList || !tab.classList.contains('tab'))
     37         return;
     38 
     39       // Find tab bar of the tab.
     40       var tabBar = tab;
     41       while (tabBar && tabBar.classList &&
     42              !tabBar.classList.contains('subpages-nav-tabs')) {
     43         tabBar = tabBar.parentNode;
     44       }
     45       if (!tabBar || !tabBar.classList)
     46         return;
     47 
     48       if (tabBar.activeNavTab != null) {
     49         tabBar.activeNavTab.classList.remove('active-tab');
     50         $(tabBar.activeNavTab.getAttribute('tab-contents')).classList.
     51             remove('active-tab-contents');
     52       }
     53 
     54       tab.classList.add('active-tab');
     55       $(tab.getAttribute('tab-contents')).classList.add('active-tab-contents');
     56       tabBar.activeNavTab = tab;
     57     },
     58 
     59     /**
     60      * Shows or hides options for clearing Flash LSOs.
     61      * @param {boolean} enabled Whether plugin data can be cleared.
     62      */
     63     setClearPluginLSODataEnabled: function(enabled) {
     64       if (enabled) {
     65         document.documentElement.setAttribute(
     66             'flashPluginSupportsClearSiteData', '');
     67       } else {
     68         document.documentElement.removeAttribute(
     69             'flashPluginSupportsClearSiteData');
     70       }
     71       if (navigator.plugins['Shockwave Flash'])
     72         document.documentElement.setAttribute('hasFlashPlugin', '');
     73     },
     74 
     75     /**
     76      * Shows or hides Pepper Flash settings.
     77      * @param {boolean} enabled Whether Pepper Flash settings should be enabled.
     78      */
     79     setPepperFlashSettingsEnabled: function(enabled) {
     80       if (enabled) {
     81         document.documentElement.setAttribute(
     82             'enablePepperFlashSettings', '');
     83       } else {
     84         document.documentElement.removeAttribute(
     85             'enablePepperFlashSettings');
     86       }
     87     },
     88 
     89     /**
     90      * Sets whether Settings is shown as a standalone page in a window for the
     91      * app launcher settings "app".
     92      * @param {boolean} isSettingsApp Whether this page is shown standalone.
     93      */
     94     setIsSettingsApp: function(isSettingsApp) {
     95       document.documentElement.classList.toggle('settings-app', isSettingsApp);
     96     },
     97 
     98     /**
     99      * Returns true if Settings is shown as an "app" (in a window by itself)
    100      * for the app launcher settings "app".
    101      * @return {boolean} Whether this page is shown standalone.
    102      */
    103     isSettingsApp: function() {
    104       return document.documentElement.classList.contains('settings-app');
    105     },
    106   };
    107 
    108   // Export
    109   return {
    110     OptionsPage: OptionsPage
    111   };
    112 });
    113