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-rw-r--r--packages/vold-utils/lib/window-watcher.js91
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diff --git a/packages/vold-utils/lib/window-watcher.js b/packages/vold-utils/lib/window-watcher.js
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--- a/packages/vold-utils/lib/window-watcher.js
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-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is Twitter Address Bar Search.
- *
- * The Initial Developer of the Original Code is The Mozilla Foundation.
- * Portions created by the Initial Developer are Copyright (C) 2011
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Edward Lee <edilee@mozilla.com>
- * Erik Vold <erikvvold@gmail.com>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
-
-const {Cu} = require("chrome");
-Cu.import("resource://gre/modules/Services.jsm", this);
-
-var {unload} = require("unload+");
-
-/**
- * Apply a callback to each open and new browser windows.
- *
- * @usage watchWindows(callback): Apply a callback to each browser window.
- * @param [function] callback: 1-parameter function that gets a browser window.
- */
-exports.watchWindows = function watchWindows(callback) {
- // Wrap the callback in a function that ignores failures
- function watcher(window) {
- try {
- // Now that the window has loaded, only handle browser windows
- let {documentElement} = window.document;
- if (documentElement.getAttribute("windowtype") == "navigator:browser")
- callback(window);
- }
- catch(ex) {}
- }
-
- // Wait for the window to finish loading before running the callback
- function runOnLoad(window) {
- // Listen for one load event before checking the window type
- window.addEventListener("load", function runOnce() {
- window.removeEventListener("load", runOnce, false);
- watcher(window);
- }, false);
- }
-
- // Add functionality to existing windows
- let windows = Services.wm.getEnumerator(null);
- while (windows.hasMoreElements()) {
- // Only run the watcher immediately if the window is completely loaded
- let window = windows.getNext();
- if (window.document.readyState == "complete")
- watcher(window);
- // Wait for the window to load before continuing
- else
- runOnLoad(window);
- }
-
- // Watch for new browser windows opening then wait for it to load
- function windowWatcher(subject, topic) {
- if (topic == "domwindowopened")
- runOnLoad(subject);
- }
- Services.ww.registerNotification(windowWatcher);
-
- // Make sure to stop watching for windows if we're unloading
- unload(function() Services.ww.unregisterNotification(windowWatcher));
-};