michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
michael@0: Components.utils.import("resource://gre/modules/Services.jsm");
michael@0: 
michael@0: /**
michael@0:  * Constants
michael@0:  */
michael@0: 
michael@0: const Cc = Components.classes;
michael@0: const Ci = Components.interfaces;
michael@0: 
michael@0: // Stop updating jumplists after some idle time.
michael@0: const IDLE_TIMEOUT_SECONDS = 5 * 60;
michael@0: 
michael@0: // Prefs
michael@0: const PREF_TASKBAR_BRANCH    = "browser.taskbar.lists.";
michael@0: const PREF_TASKBAR_ENABLED   = "enabled";
michael@0: const PREF_TASKBAR_ITEMCOUNT = "maxListItemCount";
michael@0: const PREF_TASKBAR_FREQUENT  = "frequent.enabled";
michael@0: const PREF_TASKBAR_RECENT    = "recent.enabled";
michael@0: const PREF_TASKBAR_TASKS     = "tasks.enabled";
michael@0: const PREF_TASKBAR_REFRESH   = "refreshInSeconds";
michael@0: 
michael@0: // Hash keys for pendingStatements.
michael@0: const LIST_TYPE = {
michael@0:   FREQUENT: 0
michael@0: , RECENT: 1
michael@0: }
michael@0: 
michael@0: /**
michael@0:  * Exports
michael@0:  */
michael@0: 
michael@0: this.EXPORTED_SYMBOLS = [
michael@0:   "WinTaskbarJumpList",
michael@0: ];
michael@0: 
michael@0: /**
michael@0:  * Smart getters
michael@0:  */
michael@0: 
michael@0: XPCOMUtils.defineLazyGetter(this, "_prefs", function() {
michael@0:   return Services.prefs.getBranch(PREF_TASKBAR_BRANCH);
michael@0: });
michael@0: 
michael@0: XPCOMUtils.defineLazyGetter(this, "_stringBundle", function() {
michael@0:   return Services.strings
michael@0:                  .createBundle("chrome://browser/locale/taskbar.properties");
michael@0: });
michael@0: 
michael@0: XPCOMUtils.defineLazyGetter(this, "PlacesUtils", function() {
michael@0:   Components.utils.import("resource://gre/modules/PlacesUtils.jsm");
michael@0:   return PlacesUtils;
michael@0: });
michael@0: 
michael@0: XPCOMUtils.defineLazyGetter(this, "NetUtil", function() {
michael@0:   Components.utils.import("resource://gre/modules/NetUtil.jsm");
michael@0:   return NetUtil;
michael@0: });
michael@0: 
michael@0: XPCOMUtils.defineLazyServiceGetter(this, "_idle",
michael@0:                                    "@mozilla.org/widget/idleservice;1",
michael@0:                                    "nsIIdleService");
michael@0: 
michael@0: XPCOMUtils.defineLazyServiceGetter(this, "_taskbarService",
michael@0:                                    "@mozilla.org/windows-taskbar;1",
michael@0:                                    "nsIWinTaskbar");
michael@0: 
michael@0: XPCOMUtils.defineLazyServiceGetter(this, "_winShellService",
michael@0:                                    "@mozilla.org/browser/shell-service;1",
michael@0:                                    "nsIWindowsShellService");
michael@0: 
michael@0: XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
michael@0:   "resource://gre/modules/PrivateBrowsingUtils.jsm");
michael@0: 
michael@0: /**
michael@0:  * Global functions
michael@0:  */
michael@0: 
michael@0: function _getString(name) {
michael@0:   return _stringBundle.GetStringFromName(name);
michael@0: }
michael@0: 
michael@0: /////////////////////////////////////////////////////////////////////////////
michael@0: // Task list configuration data object.
michael@0: 
michael@0: var tasksCfg = [
michael@0:   /**
michael@0:    * Task configuration options: title, description, args, iconIndex, open, close.
michael@0:    *
michael@0:    * title       - Task title displayed in the list. (strings in the table are temp fillers.)
michael@0:    * description - Tooltip description on the list item.
michael@0:    * args        - Command line args to invoke the task.
michael@0:    * iconIndex   - Optional win icon index into the main application for the
michael@0:    *               list item.
michael@0:    * open        - Boolean indicates if the command should be visible after the browser opens.
michael@0:    * close       - Boolean indicates if the command should be visible after the browser closes.
michael@0:    */
michael@0:   // Open new tab
michael@0:   {
michael@0:     get title()       _getString("taskbar.tasks.newTab.label"),
michael@0:     get description() _getString("taskbar.tasks.newTab.description"),
michael@0:     args:             "-new-tab about:blank",
michael@0:     iconIndex:        3, // New window icon
michael@0:     open:             true,
michael@0:     close:            true, // The jump list already has an app launch icon, but
michael@0:                             // we don't always update the list on shutdown.
michael@0:                             // Thus true for consistency.
michael@0:   },
michael@0: 
michael@0:   // Open new window
michael@0:   {
michael@0:     get title()       _getString("taskbar.tasks.newWindow.label"),
michael@0:     get description() _getString("taskbar.tasks.newWindow.description"),
michael@0:     args:             "-browser",
michael@0:     iconIndex:        2, // New tab icon
michael@0:     open:             true,
michael@0:     close:            true, // No point, but we don't always update the list on
michael@0:                             // shutdown. Thus true for consistency.
michael@0:   },
michael@0: 
michael@0:   // Open new private window
michael@0:   {
michael@0:     get title()       _getString("taskbar.tasks.newPrivateWindow.label"),
michael@0:     get description() _getString("taskbar.tasks.newPrivateWindow.description"),
michael@0:     args:             "-private-window",
michael@0:     iconIndex:        4, // Private browsing mode icon
michael@0:     open:             true,
michael@0:     close:            true, // No point, but we don't always update the list on
michael@0:                             // shutdown. Thus true for consistency.
michael@0:   },
michael@0: ];
michael@0: 
michael@0: /////////////////////////////////////////////////////////////////////////////
michael@0: // Implementation
michael@0: 
michael@0: this.WinTaskbarJumpList =
michael@0: {
michael@0:   _builder: null,
michael@0:   _tasks: null,
michael@0:   _shuttingDown: false,
michael@0: 
michael@0:   /**
michael@0:    * Startup, shutdown, and update
michael@0:    */ 
michael@0: 
michael@0:   startup: function WTBJL_startup() {
michael@0:     // exit if this isn't win7 or higher.
michael@0:     if (!this._initTaskbar())
michael@0:       return;
michael@0: 
michael@0:     // Win shell shortcut maintenance. If we've gone through an update,
michael@0:     // this will update any pinned taskbar shortcuts. Not specific to
michael@0:     // jump lists, but this was a convienent place to call it. 
michael@0:     try {
michael@0:       // dev builds may not have helper.exe, ignore failures.
michael@0:       this._shortcutMaintenance();
michael@0:     } catch (ex) {
michael@0:     }
michael@0: 
michael@0:     // Store our task list config data
michael@0:     this._tasks = tasksCfg;
michael@0: 
michael@0:     // retrieve taskbar related prefs.
michael@0:     this._refreshPrefs();
michael@0: 
michael@0:     // observer for private browsing and our prefs branch
michael@0:     this._initObs();
michael@0: 
michael@0:     // jump list refresh timer
michael@0:     this._updateTimer();
michael@0:   },
michael@0: 
michael@0:   update: function WTBJL_update() {
michael@0:     // are we disabled via prefs? don't do anything!
michael@0:     if (!this._enabled)
michael@0:       return;
michael@0: 
michael@0:     // do what we came here to do, update the taskbar jumplist
michael@0:     this._buildList();
michael@0:   },
michael@0: 
michael@0:   _shutdown: function WTBJL__shutdown() {
michael@0:     this._shuttingDown = true;
michael@0: 
michael@0:     // Correctly handle a clear history on shutdown.  If there are no
michael@0:     // entries be sure to empty all history lists.  Luckily Places caches
michael@0:     // this value, so it's a pretty fast call.
michael@0:     if (!PlacesUtils.history.hasHistoryEntries) {
michael@0:       this.update();
michael@0:     }
michael@0: 
michael@0:     this._free();
michael@0:   },
michael@0: 
michael@0:   _shortcutMaintenance: function WTBJL__maintenace() {
michael@0:     _winShellService.shortcutMaintenance();
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * List building
michael@0:    *
michael@0:    * @note Async builders must add their mozIStoragePendingStatement to
michael@0:    *       _pendingStatements object, using a different LIST_TYPE entry for
michael@0:    *       each statement. Once finished they must remove it and call
michael@0:    *       commitBuild().  When there will be no more _pendingStatements,
michael@0:    *       commitBuild() will commit for real.
michael@0:    */
michael@0: 
michael@0:   _pendingStatements: {},
michael@0:   _hasPendingStatements: function WTBJL__hasPendingStatements() {
michael@0:     return Object.keys(this._pendingStatements).length > 0;
michael@0:   },
michael@0: 
michael@0:   _buildList: function WTBJL__buildList() {
michael@0:     if (this._hasPendingStatements()) {
michael@0:       // We were requested to update the list while another update was in
michael@0:       // progress, this could happen at shutdown, idle or privatebrowsing.
michael@0:       // Abort the current list building.
michael@0:       for (let listType in this._pendingStatements) {
michael@0:         this._pendingStatements[listType].cancel();
michael@0:         delete this._pendingStatements[listType];
michael@0:       }
michael@0:       this._builder.abortListBuild();
michael@0:     }
michael@0: 
michael@0:     // anything to build?
michael@0:     if (!this._showFrequent && !this._showRecent && !this._showTasks) {
michael@0:       // don't leave the last list hanging on the taskbar.
michael@0:       this._deleteActiveJumpList();
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     if (!this._startBuild())
michael@0:       return;
michael@0: 
michael@0:     if (this._showTasks)
michael@0:       this._buildTasks();
michael@0: 
michael@0:     // Space for frequent items takes priority over recent.
michael@0:     if (this._showFrequent)
michael@0:       this._buildFrequent();
michael@0: 
michael@0:     if (this._showRecent)
michael@0:       this._buildRecent();
michael@0: 
michael@0:     this._commitBuild();
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Taskbar api wrappers
michael@0:    */ 
michael@0: 
michael@0:   _startBuild: function WTBJL__startBuild() {
michael@0:     var removedItems = Cc["@mozilla.org/array;1"].
michael@0:                        createInstance(Ci.nsIMutableArray);
michael@0:     this._builder.abortListBuild();
michael@0:     if (this._builder.initListBuild(removedItems)) { 
michael@0:       // Prior to building, delete removed items from history.
michael@0:       this._clearHistory(removedItems);
michael@0:       return true;
michael@0:     }
michael@0:     return false;
michael@0:   },
michael@0: 
michael@0:   _commitBuild: function WTBJL__commitBuild() {
michael@0:     if (!this._hasPendingStatements() && !this._builder.commitListBuild()) {
michael@0:       this._builder.abortListBuild();
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   _buildTasks: function WTBJL__buildTasks() {
michael@0:     var items = Cc["@mozilla.org/array;1"].
michael@0:                 createInstance(Ci.nsIMutableArray);
michael@0:     this._tasks.forEach(function (task) {
michael@0:       if ((this._shuttingDown && !task.close) || (!this._shuttingDown && !task.open))
michael@0:         return;
michael@0:       var item = this._getHandlerAppItem(task.title, task.description,
michael@0:                                          task.args, task.iconIndex, null);
michael@0:       items.appendElement(item, false);
michael@0:     }, this);
michael@0:     
michael@0:     if (items.length > 0)
michael@0:       this._builder.addListToBuild(this._builder.JUMPLIST_CATEGORY_TASKS, items);
michael@0:   },
michael@0: 
michael@0:   _buildCustom: function WTBJL__buildCustom(title, items) {
michael@0:     if (items.length > 0)
michael@0:       this._builder.addListToBuild(this._builder.JUMPLIST_CATEGORY_CUSTOMLIST, items, title);
michael@0:   },
michael@0: 
michael@0:   _buildFrequent: function WTBJL__buildFrequent() {
michael@0:     // If history is empty, just bail out.
michael@0:     if (!PlacesUtils.history.hasHistoryEntries) {
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     // Windows supports default frequent and recent lists,
michael@0:     // but those depend on internal windows visit tracking
michael@0:     // which we don't populate. So we build our own custom
michael@0:     // frequent and recent lists using our nav history data.
michael@0: 
michael@0:     var items = Cc["@mozilla.org/array;1"].
michael@0:                 createInstance(Ci.nsIMutableArray);
michael@0:     // track frequent items so that we don't add them to
michael@0:     // the recent list.
michael@0:     this._frequentHashList = [];
michael@0: 
michael@0:     this._pendingStatements[LIST_TYPE.FREQUENT] = this._getHistoryResults(
michael@0:       Ci.nsINavHistoryQueryOptions.SORT_BY_VISITCOUNT_DESCENDING,
michael@0:       this._maxItemCount,
michael@0:       function (aResult) {
michael@0:         if (!aResult) {
michael@0:           delete this._pendingStatements[LIST_TYPE.FREQUENT];
michael@0:           // The are no more results, build the list.
michael@0:           this._buildCustom(_getString("taskbar.frequent.label"), items);
michael@0:           this._commitBuild();
michael@0:           return;
michael@0:         }
michael@0: 
michael@0:         let title = aResult.title || aResult.uri;
michael@0:         let faviconPageUri = Services.io.newURI(aResult.uri, null, null);
michael@0:         let shortcut = this._getHandlerAppItem(title, title, aResult.uri, 1, 
michael@0:                                                faviconPageUri);
michael@0:         items.appendElement(shortcut, false);
michael@0:         this._frequentHashList.push(aResult.uri);
michael@0:       },
michael@0:       this
michael@0:     );
michael@0:   },
michael@0: 
michael@0:   _buildRecent: function WTBJL__buildRecent() {
michael@0:     // If history is empty, just bail out.
michael@0:     if (!PlacesUtils.history.hasHistoryEntries) {
michael@0:       return;
michael@0:     }
michael@0: 
michael@0:     var items = Cc["@mozilla.org/array;1"].
michael@0:                 createInstance(Ci.nsIMutableArray);
michael@0:     // Frequent items will be skipped, so we select a double amount of
michael@0:     // entries and stop fetching results at _maxItemCount.
michael@0:     var count = 0;
michael@0: 
michael@0:     this._pendingStatements[LIST_TYPE.RECENT] = this._getHistoryResults(
michael@0:       Ci.nsINavHistoryQueryOptions.SORT_BY_DATE_DESCENDING,
michael@0:       this._maxItemCount * 2,
michael@0:       function (aResult) {
michael@0:         if (!aResult) {
michael@0:           // The are no more results, build the list.
michael@0:           this._buildCustom(_getString("taskbar.recent.label"), items);
michael@0:           delete this._pendingStatements[LIST_TYPE.RECENT];
michael@0:           this._commitBuild();
michael@0:           return;
michael@0:         }
michael@0: 
michael@0:         if (count >= this._maxItemCount) {
michael@0:           return;
michael@0:         }
michael@0: 
michael@0:         // Do not add items to recent that have already been added to frequent.
michael@0:         if (this._frequentHashList &&
michael@0:             this._frequentHashList.indexOf(aResult.uri) != -1) {
michael@0:           return;
michael@0:         }
michael@0: 
michael@0:         let title = aResult.title || aResult.uri;
michael@0:         let faviconPageUri = Services.io.newURI(aResult.uri, null, null);
michael@0:         let shortcut = this._getHandlerAppItem(title, title, aResult.uri, 1,
michael@0:                                                faviconPageUri);
michael@0:         items.appendElement(shortcut, false);
michael@0:         count++;
michael@0:       },
michael@0:       this
michael@0:     );
michael@0:   },
michael@0: 
michael@0:   _deleteActiveJumpList: function WTBJL__deleteAJL() {
michael@0:     this._builder.deleteActiveList();
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Jump list item creation helpers
michael@0:    */
michael@0: 
michael@0:   _getHandlerAppItem: function WTBJL__getHandlerAppItem(name, description, 
michael@0:                                                         args, iconIndex, 
michael@0:                                                         faviconPageUri) {
michael@0:     var file = Services.dirsvc.get("XREExeF", Ci.nsILocalFile);
michael@0: 
michael@0:     var handlerApp = Cc["@mozilla.org/uriloader/local-handler-app;1"].
michael@0:                      createInstance(Ci.nsILocalHandlerApp);
michael@0:     handlerApp.executable = file;
michael@0:     // handlers default to the leaf name if a name is not specified
michael@0:     if (name && name.length != 0)
michael@0:       handlerApp.name = name;
michael@0:     handlerApp.detailedDescription = description;
michael@0:     handlerApp.appendParameter(args);
michael@0: 
michael@0:     var item = Cc["@mozilla.org/windows-jumplistshortcut;1"].
michael@0:                createInstance(Ci.nsIJumpListShortcut);
michael@0:     item.app = handlerApp;
michael@0:     item.iconIndex = iconIndex;
michael@0:     item.faviconPageUri = faviconPageUri;
michael@0:     return item;
michael@0:   },
michael@0: 
michael@0:   _getSeparatorItem: function WTBJL__getSeparatorItem() {
michael@0:     var item = Cc["@mozilla.org/windows-jumplistseparator;1"].
michael@0:                createInstance(Ci.nsIJumpListSeparator);
michael@0:     return item;
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Nav history helpers
michael@0:    */
michael@0: 
michael@0:   _getHistoryResults:
michael@0:   function WTBLJL__getHistoryResults(aSortingMode, aLimit, aCallback, aScope) {
michael@0:     var options = PlacesUtils.history.getNewQueryOptions();
michael@0:     options.maxResults = aLimit;
michael@0:     options.sortingMode = aSortingMode;
michael@0:     var query = PlacesUtils.history.getNewQuery();
michael@0: 
michael@0:     // Return the pending statement to the caller, to allow cancelation.
michael@0:     return PlacesUtils.history.QueryInterface(Ci.nsPIPlacesDatabase)
michael@0:                               .asyncExecuteLegacyQueries([query], 1, options, {
michael@0:       handleResult: function (aResultSet) {
michael@0:         for (let row; (row = aResultSet.getNextRow());) {
michael@0:           try {
michael@0:             aCallback.call(aScope,
michael@0:                            { uri: row.getResultByIndex(1)
michael@0:                            , title: row.getResultByIndex(2)
michael@0:                            });
michael@0:           } catch (e) {}
michael@0:         }
michael@0:       },
michael@0:       handleError: function (aError) {
michael@0:         Components.utils.reportError(
michael@0:           "Async execution error (" + aError.result + "): " + aError.message);
michael@0:       },
michael@0:       handleCompletion: function (aReason) {
michael@0:         aCallback.call(WinTaskbarJumpList, null);
michael@0:       },
michael@0:     });
michael@0:   },
michael@0: 
michael@0:   _clearHistory: function WTBJL__clearHistory(items) {
michael@0:     if (!items)
michael@0:       return;
michael@0:     var URIsToRemove = [];
michael@0:     var e = items.enumerate();
michael@0:     while (e.hasMoreElements()) {
michael@0:       let oldItem = e.getNext().QueryInterface(Ci.nsIJumpListShortcut);
michael@0:       if (oldItem) {
michael@0:         try { // in case we get a bad uri
michael@0:           let uriSpec = oldItem.app.getParameter(0);
michael@0:           URIsToRemove.push(NetUtil.newURI(uriSpec));
michael@0:         } catch (err) { }
michael@0:       }
michael@0:     }
michael@0:     if (URIsToRemove.length > 0) {
michael@0:       PlacesUtils.bhistory.removePages(URIsToRemove, URIsToRemove.length, true);
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Prefs utilities
michael@0:    */ 
michael@0: 
michael@0:   _refreshPrefs: function WTBJL__refreshPrefs() {
michael@0:     this._enabled = _prefs.getBoolPref(PREF_TASKBAR_ENABLED);
michael@0:     this._showFrequent = _prefs.getBoolPref(PREF_TASKBAR_FREQUENT);
michael@0:     this._showRecent = _prefs.getBoolPref(PREF_TASKBAR_RECENT);
michael@0:     this._showTasks = _prefs.getBoolPref(PREF_TASKBAR_TASKS);
michael@0:     this._maxItemCount = _prefs.getIntPref(PREF_TASKBAR_ITEMCOUNT);
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Init and shutdown utilities
michael@0:    */ 
michael@0: 
michael@0:   _initTaskbar: function WTBJL__initTaskbar() {
michael@0:     this._builder = _taskbarService.createJumpListBuilder();
michael@0:     if (!this._builder || !this._builder.available)
michael@0:       return false;
michael@0: 
michael@0:     return true;
michael@0:   },
michael@0: 
michael@0:   _initObs: function WTBJL__initObs() {
michael@0:     // If the browser is closed while in private browsing mode, the "exit"
michael@0:     // notification is fired on quit-application-granted.
michael@0:     // History cleanup can happen at profile-change-teardown.
michael@0:     Services.obs.addObserver(this, "profile-before-change", false);
michael@0:     Services.obs.addObserver(this, "browser:purge-session-history", false);
michael@0:     _prefs.addObserver("", this, false);
michael@0:   },
michael@0:  
michael@0:   _freeObs: function WTBJL__freeObs() {
michael@0:     Services.obs.removeObserver(this, "profile-before-change");
michael@0:     Services.obs.removeObserver(this, "browser:purge-session-history");
michael@0:     _prefs.removeObserver("", this);
michael@0:   },
michael@0: 
michael@0:   _updateTimer: function WTBJL__updateTimer() {
michael@0:     if (this._enabled && !this._shuttingDown && !this._timer) {
michael@0:       this._timer = Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer);
michael@0:       this._timer.initWithCallback(this,
michael@0:                                    _prefs.getIntPref(PREF_TASKBAR_REFRESH)*1000,
michael@0:                                    this._timer.TYPE_REPEATING_SLACK);
michael@0:     }
michael@0:     else if ((!this._enabled || this._shuttingDown) && this._timer) {
michael@0:       this._timer.cancel();
michael@0:       delete this._timer;
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   _hasIdleObserver: false,
michael@0:   _updateIdleObserver: function WTBJL__updateIdleObserver() {
michael@0:     if (this._enabled && !this._shuttingDown && !this._hasIdleObserver) {
michael@0:       _idle.addIdleObserver(this, IDLE_TIMEOUT_SECONDS);
michael@0:       this._hasIdleObserver = true;
michael@0:     }
michael@0:     else if ((!this._enabled || this._shuttingDown) && this._hasIdleObserver) {
michael@0:       _idle.removeIdleObserver(this, IDLE_TIMEOUT_SECONDS);
michael@0:       this._hasIdleObserver = false;
michael@0:     }
michael@0:   },
michael@0: 
michael@0:   _free: function WTBJL__free() {
michael@0:     this._freeObs();
michael@0:     this._updateTimer();
michael@0:     this._updateIdleObserver();
michael@0:     delete this._builder;
michael@0:   },
michael@0: 
michael@0:   /**
michael@0:    * Notification handlers
michael@0:    */
michael@0: 
michael@0:   notify: function WTBJL_notify(aTimer) {
michael@0:     // Add idle observer on the first notification so it doesn't hit startup.
michael@0:     this._updateIdleObserver();
michael@0:     this.update();
michael@0:   },
michael@0: 
michael@0:   observe: function WTBJL_observe(aSubject, aTopic, aData) {
michael@0:     switch (aTopic) {
michael@0:       case "nsPref:changed":
michael@0:         if (this._enabled == true && !_prefs.getBoolPref(PREF_TASKBAR_ENABLED))
michael@0:           this._deleteActiveJumpList();
michael@0:         this._refreshPrefs();
michael@0:         this._updateTimer();
michael@0:         this._updateIdleObserver();
michael@0:         this.update();
michael@0:       break;
michael@0: 
michael@0:       case "profile-before-change":
michael@0:         this._shutdown();
michael@0:       break;
michael@0: 
michael@0:       case "browser:purge-session-history":
michael@0:         this.update();
michael@0:       break;
michael@0:       case "idle":
michael@0:         if (this._timer) {
michael@0:           this._timer.cancel();
michael@0:           delete this._timer;
michael@0:         }
michael@0:       break;
michael@0: 
michael@0:       case "active":
michael@0:         this._updateTimer();
michael@0:       break;
michael@0:     }
michael@0:   },
michael@0: };