1 files changed, 83 insertions, 0 deletions
diff --git a/toolkit/jetpack/sdk/windows/fennec.js b/toolkit/jetpack/sdk/windows/fennec.js
new file mode 100644
index 000000000..3c3b6c313
--- /dev/null
+++ b/toolkit/jetpack/sdk/windows/fennec.js
@@ -0,0 +1,83 @@
+/* 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 { Class } = require('../core/heritage');
+const { BrowserWindow } = require('../window/browser');
+const { WindowTracker } = require('../deprecated/window-utils');
+const { isBrowser, getMostRecentBrowserWindow } = require('../window/utils');
+const { windowNS } = require('../window/namespace');
+const { on, off, once, emit } = require('../event/core');
+const { method } = require('../lang/functional');
+const { EventTarget } = require('../event/target');
+const { List, addListItem } = require('../util/list');
+
+const ERR_FENNEC_MSG = 'This method is not yet supported by Fennec, consider using require("sdk/tabs") instead';
+
+// NOTE: On Fennec there is only one window.
+
+var BrowserWindows = Class({
+  implements: [ List ],
+  extends: EventTarget,
+  initialize: function() {
+    List.prototype.initialize.apply(this);
+  },
+  get activeWindow() {
+    let window = getMostRecentBrowserWindow();
+    return window ? getBrowserWindow({window: window}) : null;
+  },
+  open: function open(options) {
+    throw new Error(ERR_FENNEC_MSG);
+    return null;
+  }
+});
+const browserWindows = exports.browserWindows = BrowserWindows();
+
+
+/**
+ * Gets a `BrowserWindow` for the given `chromeWindow` if previously
+ * registered, `null` otherwise.
+ */
+function getRegisteredWindow(chromeWindow) {
+  for (let window of browserWindows) {
+    if (chromeWindow === windowNS(window).window)
+      return window;
+  }
+
+  return null;
+}
+
+/**
+ * Gets a `BrowserWindow` for the provided window options obj
+ * @params {Object} options
+ *    Options that are passed to the the `BrowserWindow`
+ * @returns {BrowserWindow}
+ */
+function getBrowserWindow(options) {
+  let window = null;
+
+  // if we have a BrowserWindow already then use it
+  if ('window' in options)
+    window = getRegisteredWindow(options.window);
+  if (window)
+    return window;
+
+  // we don't have a BrowserWindow yet, so create one
+  window = BrowserWindow(options);
+  addListItem(browserWindows, window);
+  return window;
+}
+
+WindowTracker({
+  onTrack: function onTrack(chromeWindow) {
+    if (!isBrowser(chromeWindow)) return;
+    let window = getBrowserWindow({ window: chromeWindow });
+    emit(browserWindows, 'open', window);
+  },
+  onUntrack: function onUntrack(chromeWindow) {
+    if (!isBrowser(chromeWindow)) return;
+    let window = getBrowserWindow({ window: chromeWindow });
+    emit(browserWindows, 'close', window);
+  }
+});