The Tor Browser: b2g/components/WebappsUpdater.jsm@925c144e1f1f

     1 /* This Source Code Form is subject to the terms of the Mozilla Public

     2  * License, v. 2.0. If a copy of the MPL was not distributed with this file,

     3  * You can obtain one at http://mozilla.org/MPL/2.0/. */

     5 "use strict";

     7 this.EXPORTED_SYMBOLS = ["WebappsUpdater"];

     9 const Cc = Components.classes;

    10 const Cu = Components.utils;

    12 Cu.import("resource://gre/modules/XPCOMUtils.jsm");

    13 Cu.import("resource://gre/modules/Services.jsm");

    15 XPCOMUtils.defineLazyServiceGetter(this, "settings",

    16                                    "@mozilla.org/settingsService;1",

    17                                    "nsISettingsService");

    19 XPCOMUtils.defineLazyModuleGetter(this, "SystemAppProxy",

    20                                   "resource://gre/modules/SystemAppProxy.jsm");

    22 function debug(aStr) {

    23   //dump("--*-- WebappsUpdater: " + aStr);

    24 }

    26 this.WebappsUpdater = {

    27   _checkingApps: false,

    29   handleContentStart: function() {

    30   },

    32   sendChromeEvent: function(aType, aDetail) {

    33     let detail = aDetail || {};

    34     detail.type = aType;

    36     let sent = SystemAppProxy.dispatchEvent(detail);

    37     if (!sent) {

    38       debug("Warning: Couldn't send update event " + aType +

    39           ": no content browser. Will send again when content becomes available.");

    40       return false;

    41     }

    43     return true;

    44   },

    46   _appsUpdated: function(aApps) {

    47     debug("appsUpdated: " + aApps.length + " apps to update");

    48     let lock = settings.createLock();

    49     lock.set("apps.updateStatus", "check-complete", null);

    50     this.sendChromeEvent("apps-update-check", { apps: aApps });

    51     this._checkingApps = false;

    52   },

    54   // Trigger apps update check and wait for all to be done before

    55   // notifying gaia.

    56   updateApps: function() {

    57     debug("updateApps (" + this._checkingApps + ")");

    58     // Don't start twice.

    59     if (this._checkingApps) {

    60       return;

    61     }

    63     this._checkingApps = true;

    65     let self = this;

    67     let window = Services.wm.getMostRecentWindow("navigator:browser");

    68     let all = window.navigator.mozApps.mgmt.getAll();

    70     all.onsuccess = function() {

    71       let appsCount = this.result.length;

    72       let appsChecked = 0;

    73       let appsToUpdate = [];

    74       this.result.forEach(function updateApp(aApp) {

    75         let update = aApp.checkForUpdate();

    76         update.onsuccess = function() {

    77           if (aApp.downloadAvailable) {

    78             appsToUpdate.push(aApp.manifestURL);

    79           }

    81           appsChecked += 1;

    82           if (appsChecked == appsCount) {

    83             self._appsUpdated(appsToUpdate);

    84           }

    85         }

    86         update.onerror = function() {

    87           appsChecked += 1;

    88           if (appsChecked == appsCount) {

    89             self._appsUpdated(appsToUpdate);

    90           }

    91         }

    92       });

    93     }

    95     all.onerror = function() {

    96       // Could not get the app list, just notify to update nothing.

    97       self._appsUpdated([]);

    98     }

    99   }

   100 };

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