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 file,
michael@0:  * You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: "use strict";
michael@0: 
michael@0: var OfflineApps = {
michael@0:   offlineAppRequested: function(aContentWindow) {
michael@0:     if (!Services.prefs.getBoolPref("browser.offline-apps.notify"))
michael@0:       return;
michael@0: 
michael@0:     let tab = BrowserApp.getTabForWindow(aContentWindow);
michael@0:     let currentURI = aContentWindow.document.documentURIObject;
michael@0: 
michael@0:     // Don't bother showing UI if the user has already made a decision
michael@0:     if (Services.perms.testExactPermission(currentURI, "offline-app") != Services.perms.UNKNOWN_ACTION)
michael@0:       return;
michael@0: 
michael@0:     try {
michael@0:       if (Services.prefs.getBoolPref("offline-apps.allow_by_default")) {
michael@0:         // All pages can use offline capabilities, no need to ask the user
michael@0:         return;
michael@0:       }
michael@0:     } catch(e) {
michael@0:       // This pref isn't set by default, ignore failures
michael@0:     }
michael@0: 
michael@0:     let host = currentURI.asciiHost;
michael@0:     let notificationID = "offline-app-requested-" + host;
michael@0: 
michael@0:     let strings = Strings.browser;
michael@0:     let buttons = [{
michael@0:       label: strings.GetStringFromName("offlineApps.allow"),
michael@0:       callback: function() {
michael@0:         OfflineApps.allowSite(aContentWindow.document);
michael@0:       }
michael@0:     },
michael@0:     {
michael@0:       label: strings.GetStringFromName("offlineApps.dontAllow2"),
michael@0:       callback: function(aChecked) {
michael@0:         if (aChecked)
michael@0:           OfflineApps.disallowSite(aContentWindow.document);
michael@0:       }
michael@0:     }];
michael@0: 
michael@0:     let requestor = BrowserApp.manifest ? "'" + BrowserApp.manifest.name + "'" : host;
michael@0:     let message = strings.formatStringFromName("offlineApps.ask", [requestor], 1);
michael@0:     let options = { checkbox: Strings.browser.GetStringFromName("offlineApps.dontAskAgain") };
michael@0:     NativeWindow.doorhanger.show(message, notificationID, buttons, tab.id, options);
michael@0:   },
michael@0: 
michael@0:   allowSite: function(aDocument) {
michael@0:     Services.perms.add(aDocument.documentURIObject, "offline-app", Services.perms.ALLOW_ACTION);
michael@0: 
michael@0:     // When a site is enabled while loading, manifest resources will
michael@0:     // start fetching immediately.  This one time we need to do it
michael@0:     // ourselves.
michael@0:     this._startFetching(aDocument);
michael@0:   },
michael@0: 
michael@0:   disallowSite: function(aDocument) {
michael@0:     Services.perms.add(aDocument.documentURIObject, "offline-app", Services.perms.DENY_ACTION);
michael@0:   },
michael@0: 
michael@0:   _startFetching: function(aDocument) {
michael@0:     if (!aDocument.documentElement)
michael@0:       return;
michael@0: 
michael@0:     let manifest = aDocument.documentElement.getAttribute("manifest");
michael@0:     if (!manifest)
michael@0:       return;
michael@0: 
michael@0:     let manifestURI = Services.io.newURI(manifest, aDocument.characterSet, aDocument.documentURIObject);
michael@0:     let updateService = Cc["@mozilla.org/offlinecacheupdate-service;1"].getService(Ci.nsIOfflineCacheUpdateService);
michael@0:     updateService.scheduleUpdate(manifestURI, aDocument.documentURIObject, window);
michael@0:   }
michael@0: };