/usr/share/xul-ext/ubiquity/modules/webjsm.js is in xul-ext-ubiquity 0.6.4~pre20140729-1.
This file is owned by root:root, with mode 0o644.
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* 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 Ubiquity.
*
* The Initial Developer of the Original Code is Mozilla.
* Portions created by the Initial Developer are Copyright (C) 2007
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Atul Varma <atul@mozilla.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 ***** */
// = WebJsModule =
//
// The {{{WebJsModule}}} class is used when it's desirable to have JavaScript
// libraries that were originally intended for use on the web be
// accessible from JS Modules.
//
// Generally, this is done by using an always-existing DOM window to
// host the JS library in chrome space and provide direct access to it.
// This ensures that all standard globals the code expects to exist,
// such as {{{window}}} and {{{XMLHttpRequest}}}, actually exist.
//
// Note, however, that since the code is running in chrome space,
// care must be taken to ensure that any JS libraries loaded don't load
// remote code from untrusted sources.
var EXPORTED_SYMBOLS = ["WebJsModule"];
const Cc = Components.classes;
const Ci = Components.interfaces;
// == The WebJsModule Class ==
//
// The constructor requires a callback function, which is called when the
// {{{WebJsModule}}} is finished initializing itself. Optionally, the
// constructor can also take an instance of a DOM window, which it will
// use to host any JS code. If unspecified, the hidden DOM window is
// used.
Components.utils.import("resource://ubiquity/modules/utils.js");
function WebJsModule(callback, window) {
if (!window) window = Utils.hiddenWindow;
var importedScripts = {};
var self = this;
var iframe = window.document.createElement("iframe");
iframe.setAttribute("src", "chrome://ubiquity/content/hiddenframe.html");
Utils.listenOnce(iframe, "pageshow", function WJM__onPageShow() {
// Have our instance dynamically inherit the properties of the
// hidden window.
self.__proto__ = iframe.contentWindow;
callback();
});
window.document.documentElement.appendChild(iframe);
// === {{{WebJsModule#importScript()}}} ===
//
// This method is passed a URL that specifies the content-space JS
// library to load. If the library is already loaded, this method
// does nothing.
//
// Once the script is imported, any globals it created can be
// directly accessed as properties of the {{{WebJsModule}}} instance.
this.importScript = function WJM_importScript(url, callback) {
if (url in importedScripts) return;
var doc = iframe.contentDocument, script = doc.createElement('script');
script.setAttribute('src', url);
if (callback) Utils.listenOnce(script, 'load', callback);
doc.documentElement.appendChild(script);
doc.documentElement.removeChild(script);
importedScripts[url] = true;
};
}
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