зеркало из https://github.com/mozilla/gecko-dev.git
95 строки
3.4 KiB
JavaScript
95 строки
3.4 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* This module is imported at the startup of an application. It takes care of
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* permissions installation, application url loading, security settings. Put
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* stuff here that you want to happen once on startup before the webapp is
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* loaded. */
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this.EXPORTED_SYMBOLS = ["startup"];
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/Services.jsm");
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// Initialize DOMApplicationRegistry by importing Webapps.jsm.
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Cu.import("resource://gre/modules/Webapps.jsm");
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Cu.import("resource://gre/modules/AppsUtils.jsm");
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Cu.import("resource://gre/modules/PermissionsInstaller.jsm");
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Cu.import("resource://gre/modules/Task.jsm");
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Cu.import("resource://gre/modules/Promise.jsm");
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// Initialize window-independent handling of webapps- notifications.
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Cu.import("resource://webapprt/modules/WebappsHandler.jsm");
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Cu.import("resource://webapprt/modules/WebappRT.jsm");
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function isFirstRunOrUpdate() {
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let savedBuildID = null;
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try {
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savedBuildID = Services.prefs.getCharPref("webapprt.buildID");
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} catch (e) {}
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let ourBuildID = Services.appinfo.platformBuildID;
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if (ourBuildID != savedBuildID) {
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Services.prefs.setCharPref("webapprt.buildID", ourBuildID);
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return true;
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}
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return false;
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}
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// Observes all the events needed to actually launch an application.
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// It waits for XUL window and webapps registry loading.
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this.startup = function(window) {
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return Task.spawn(function () {
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// Observe registry loading.
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let deferredRegistry = Promise.defer();
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function observeRegistryLoading() {
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Services.obs.removeObserver(observeRegistryLoading, "webapps-registry-start");
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deferredRegistry.resolve();
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}
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Services.obs.addObserver(observeRegistryLoading, "webapps-registry-start", false);
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// Observe XUL window loading.
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// For tests, it could be already loaded.
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let deferredWindowLoad = Promise.defer();
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if (window.document && window.document.getElementById("content")) {
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deferredWindowLoad.resolve();
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} else {
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window.addEventListener("load", function onLoad() {
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window.removeEventListener("load", onLoad, false);
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deferredWindowLoad.resolve();
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});
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}
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// Wait for webapps registry loading.
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yield deferredRegistry.promise;
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// Install/update permissions and get the appID from the webapps registry.
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let appID = Ci.nsIScriptSecurityManager.NO_APP_ID;
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let manifestURL = WebappRT.config.app.manifestURL;
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if (manifestURL) {
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appID = DOMApplicationRegistry.getAppLocalIdByManifestURL(manifestURL);
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// On firstrun, set permissions to their default values.
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// When the webapp runtime is updated, update the permissions.
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// TODO: Update the permissions when the application is updated.
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if (isFirstRunOrUpdate(Services.prefs)) {
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PermissionsInstaller.installPermissions(WebappRT.config.app, true);
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}
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}
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// Wait for XUL window loading
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yield deferredWindowLoad.promise;
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// Get the <browser> element in the webapp.xul window.
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let appBrowser = window.document.getElementById("content");
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// Set the principal to the correct appID and launch the application.
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appBrowser.docShell.setIsApp(appID);
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appBrowser.setAttribute("src", WebappRT.launchURI);
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}).then(null, Cu.reportError.bind(Cu));
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}
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