gecko-dev/b2g/components/WebappsUpdater.jsm

105 lines
2.9 KiB
JavaScript

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
this.EXPORTED_SYMBOLS = ["WebappsUpdater"];
const Cc = Components.classes;
const Cu = Components.utils;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
XPCOMUtils.defineLazyServiceGetter(this, "settings",
"@mozilla.org/settingsService;1",
"nsISettingsService");
function debug(aStr) {
//dump("--*-- WebappsUpdater: " + aStr);
}
this.WebappsUpdater = {
_checkingApps: false,
_pendingEvents: [],
handleContentStart: function(aShell) {
let content = aShell.contentBrowser.contentWindow;
this._pendingEvents.forEach(aShell.sendChromeEvent);
this._pendingEvents.length = 0;
},
sendChromeEvent: function(aType, aDetail) {
let detail = aDetail || {};
detail.type = aType;
let browser = Services.wm.getMostRecentWindow("navigator:browser");
if (!browser) {
this._pendingEvents.push(detail);
debug("Warning: Couldn't send update event " + aType +
": no content browser. Will send again when content becomes available.");
return false;
}
browser.shell.sendChromeEvent(detail);
return true;
},
_appsUpdated: function(aApps) {
debug("appsUpdated: " + aApps.length + " apps to update");
let lock = settings.createLock();
lock.set("apps.updateStatus", "check-complete", null);
this.sendChromeEvent("apps-update-check", { apps: aApps });
this._checkingApps = false;
},
// Trigger apps update check and wait for all to be done before
// notifying gaia.
updateApps: function() {
debug("updateApps (" + this._checkingApps + ")");
// Don't start twice.
if (this._checkingApps) {
return;
}
this._checkingApps = true;
let self = this;
let window = Services.wm.getMostRecentWindow("navigator:browser");
let all = window.navigator.mozApps.mgmt.getAll();
all.onsuccess = function() {
let appsCount = this.result.length;
let appsChecked = 0;
let appsToUpdate = [];
this.result.forEach(function updateApp(aApp) {
let update = aApp.checkForUpdate();
update.onsuccess = function() {
if (aApp.downloadAvailable) {
appsToUpdate.push(aApp.manifestURL);
}
appsChecked += 1;
if (appsChecked == appsCount) {
self._appsUpdated(appsToUpdate);
}
}
update.onerror = function() {
appsChecked += 1;
if (appsChecked == appsCount) {
self._appsUpdated(appsToUpdate);
}
}
});
}
all.onerror = function() {
// Could not get the app list, just notify to update nothing.
self._appsUpdated([]);
}
}
};