1 files changed, 67 insertions, 0 deletions
diff --git a/tools/addon-sdk-1.5/packages/addon-kit/lib/private-browsing.js b/tools/addon-sdk-1.5/packages/addon-kit/lib/private-browsing.js
new file mode 100644
index 0000000..0704e64
--- /dev/null
+++ b/tools/addon-sdk-1.5/packages/addon-kit/lib/private-browsing.js
@@ -0,0 +1,67 @@
+/* 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";
+
+const {Cc,Ci} = require("chrome");
+const observers = require("api-utils/observer-service");
+const { EventEmitter } = require("api-utils/events");
+const { setTimeout } = require("api-utils/timer");
+const unload = require("api-utils/unload");
+
+const ON_START = "start";
+const ON_STOP = "stop";
+const ON_TRANSITION = "private-browsing-transition-complete";
+
+let pbService;
+// Currently, only Firefox implements the private browsing service.
+if (require("api-utils/xul-app").is("Firefox")) {
+  pbService = Cc["@mozilla.org/privatebrowsing;1"].
+              getService(Ci.nsIPrivateBrowsingService);
+}
+
+function toggleMode(value) pbService.privateBrowsingEnabled = !!value
+
+const privateBrowsing = EventEmitter.compose({
+  constructor: function PrivateBrowsing() {
+    // Binding method to instance since it will be used with `setTimeout`.
+    this._emitOnObject = this._emitOnObject.bind(this);
+    this.unload = this.unload.bind(this);
+    // Report unhandled errors from listeners
+    this.on("error", console.exception.bind(console));
+    unload.ensure(this);
+    // We only need to add observers if `pbService` exists.
+    if (pbService) {
+      observers.add(ON_TRANSITION, this.onTransition.bind(this));
+      this._isActive = pbService.privateBrowsingEnabled;
+    }
+  },
+  unload: function _destructor() {
+    this._removeAllListeners();
+  },
+  // We don't need to do anything with cancel here.
+  onTransition: function onTransition() {
+    let isActive = this._isActive = pbService.privateBrowsingEnabled;
+    setTimeout(this._emitOnObject, 0, exports, isActive ? ON_START : ON_STOP);
+  },
+  get isActive() this._isActive,
+  set isActive(value) {
+    if (pbService)
+      // We toggle private browsing mode asynchronously in order to work around
+      // bug 659629.  Since private browsing transitions are asynchronous
+      // anyway, this doesn't significantly change the behavior of the API.
+      setTimeout(toggleMode, 0, value);
+  },
+  _isActive: false
+})()
+
+Object.defineProperty(exports, "isActive", {
+  get: function() privateBrowsing.isActive
+});
+exports.activate = function activate() privateBrowsing.isActive = true;
+exports.deactivate = function deactivate() privateBrowsing.isActive = false;
+exports.on = privateBrowsing.on;
+exports.once = privateBrowsing.once;
+exports.removeListener = privateBrowsing.removeListener;
+