mirror of
https://github.com/gorhill/uMatrix.git
synced 2024-06-27 18:40:41 +12:00
147 lines
4.4 KiB
JavaScript
147 lines
4.4 KiB
JavaScript
/*******************************************************************************
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µBlock - a browser extension to block requests.
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Copyright (C) 2014 The µBlock authors
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uBlock
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*/
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/* global APP_SHUTDOWN, APP_STARTUP */
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/* exported startup, shutdown, install, uninstall */
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'use strict';
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/******************************************************************************/
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// Accessing the context of the background page:
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// var win = Services.appShell.hiddenDOMWindow.document.querySelector('iframe[src*=ublock]').contentWindow;
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let bgProcess;
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let version;
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const hostName = 'ublock0';
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const restartListener = {
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get messageManager() {
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return Components.classes['@mozilla.org/parentprocessmessagemanager;1']
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.getService(Components.interfaces.nsIMessageListenerManager);
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},
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receiveMessage: function() {
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shutdown();
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startup();
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}
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};
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/******************************************************************************/
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function startup(data, reason) {
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if ( data !== undefined ) {
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version = data.version;
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}
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let appShell = Components.classes['@mozilla.org/appshell/appShellService;1']
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.getService(Components.interfaces.nsIAppShellService);
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let onReady = function(e) {
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if ( e ) {
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this.removeEventListener(e.type, onReady);
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}
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let hiddenDoc = appShell.hiddenDOMWindow.document;
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// https://github.com/gorhill/uBlock/issues/10
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// Fixed by github.com/AlexVallat:
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// https://github.com/chrisaljoudi/uBlock/issues/1149
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// https://github.com/AlexVallat/uBlock/commit/e762a29d308caa46578cdc34a9be92c4ad5ecdd0
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if ( hiddenDoc.readyState === 'loading' ) {
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hiddenDoc.addEventListener('DOMContentLoaded', onReady);
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return;
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}
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bgProcess = hiddenDoc.documentElement.appendChild(
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hiddenDoc.createElementNS('http://www.w3.org/1999/xhtml', 'iframe')
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);
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bgProcess.setAttribute(
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'src',
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'chrome://' + hostName + '/content/background.html#' + version
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);
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restartListener.messageManager.addMessageListener(
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hostName + '-restart',
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restartListener
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);
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};
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if ( reason !== APP_STARTUP ) {
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onReady();
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return;
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}
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let ww = Components.classes['@mozilla.org/embedcomp/window-watcher;1']
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.getService(Components.interfaces.nsIWindowWatcher);
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ww.registerNotification({
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observe: function(win, topic) {
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if ( topic !== 'domwindowopened' ) {
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return;
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}
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try {
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appShell.hiddenDOMWindow;
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} catch (ex) {
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return;
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}
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ww.unregisterNotification(this);
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win.addEventListener('DOMContentLoaded', onReady);
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}
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});
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}
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/******************************************************************************/
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function shutdown(data, reason) {
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if ( reason === APP_SHUTDOWN ) {
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return;
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}
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bgProcess.parentNode.removeChild(bgProcess);
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if ( data === undefined ) {
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return;
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}
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// Remove the restartObserver only when the extension is being disabled
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restartListener.messageManager.removeMessageListener(
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hostName + '-restart',
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restartListener
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);
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}
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/******************************************************************************/
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function install() {
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// https://bugzil.la/719376
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Components.classes['@mozilla.org/intl/stringbundle;1']
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.getService(Components.interfaces.nsIStringBundleService)
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.flushBundles();
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}
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/******************************************************************************/
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function uninstall() {}
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/******************************************************************************/
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