import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

mobile/android/chrome/content/OfflineApps.js

@@ -0,0 +1,77 @@
+/* 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";
+
+var OfflineApps = {
+  offlineAppRequested: function(aContentWindow) {
+    if (!Services.prefs.getBoolPref("browser.offline-apps.notify"))
+      return;
+
+    let tab = BrowserApp.getTabForWindow(aContentWindow);
+    let currentURI = aContentWindow.document.documentURIObject;
+
+    // Don't bother showing UI if the user has already made a decision
+    if (Services.perms.testExactPermission(currentURI, "offline-app") != Services.perms.UNKNOWN_ACTION)
+      return;
+
+    try {
+      if (Services.prefs.getBoolPref("offline-apps.allow_by_default")) {
+        // All pages can use offline capabilities, no need to ask the user
+        return;
+      }
+    } catch(e) {
+      // This pref isn't set by default, ignore failures
+    }
+
+    let host = currentURI.asciiHost;
+    let notificationID = "offline-app-requested-" + host;
+
+    let strings = Strings.browser;
+    let buttons = [{
+      label: strings.GetStringFromName("offlineApps.dontAllow2"),
+      callback: function(aChecked) {
+        if (aChecked)
+          OfflineApps.disallowSite(aContentWindow.document);
+      }
+    },
+    {
+      label: strings.GetStringFromName("offlineApps.allow"),
+      callback: function() {
+        OfflineApps.allowSite(aContentWindow.document);
+      },
+      positive: true
+    }];
+
+    let requestor = BrowserApp.manifest ? "'" + BrowserApp.manifest.name + "'" : host;
+    let message = strings.formatStringFromName("offlineApps.ask", [requestor], 1);
+    let options = { checkbox: Strings.browser.GetStringFromName("offlineApps.dontAskAgain") };
+    NativeWindow.doorhanger.show(message, notificationID, buttons, tab.id, options);
+  },
+
+  allowSite: function(aDocument) {
+    Services.perms.add(aDocument.documentURIObject, "offline-app", Services.perms.ALLOW_ACTION);
+
+    // When a site is enabled while loading, manifest resources will
+    // start fetching immediately.  This one time we need to do it
+    // ourselves.
+    this._startFetching(aDocument);
+  },
+
+  disallowSite: function(aDocument) {
+    Services.perms.add(aDocument.documentURIObject, "offline-app", Services.perms.DENY_ACTION);
+  },
+
+  _startFetching: function(aDocument) {
+    if (!aDocument.documentElement)
+      return;
+
+    let manifest = aDocument.documentElement.getAttribute("manifest");
+    if (!manifest)
+      return;
+
+    let manifestURI = Services.io.newURI(manifest, aDocument.characterSet, aDocument.documentURIObject);
+    let updateService = Cc["@mozilla.org/offlinecacheupdate-service;1"].getService(Ci.nsIOfflineCacheUpdateService);
+    updateService.scheduleUpdate(manifestURI, aDocument.documentURIObject, aDocument.nodePrincipal, window);
+  }
+};