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/*******************************************************************************
µBlock - a browser extension to block requests.
Copyright (C) 2014 The µBlock authors
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see {http://www.gnu.org/licenses/}.
Home: https://github.com/gorhill/uBlock
*/
/* global APP_SHUTDOWN, APP_STARTUP */
/* exported startup, shutdown, install, uninstall */
'use strict';
/******************************************************************************/
let bgProcess;
const hostName = 'ublock';
const {classes: Cc, interfaces: Ci, utils: Cu} = Components;
const restartObserver = {
get observer() {
return Cc["@mozilla.org/observer-service;1"]
.getService(Ci.nsIObserverService);
},
QueryInterface: (function() {
let {XPCOMUtils} = Cu['import']('resource://gre/modules/XPCOMUtils.jsm', {});
return XPCOMUtils.generateQI([
Ci.nsIObserver,
Ci.nsISupportsWeakReference
]);
})(),
register: function() {
this.observer.addObserver(this, hostName + '-restart', true);
},
unregister: function() {
this.observer.removeObserver(this, hostName + '-restart');
},
observe: function() {
shutdown();
startup();
}
};
/******************************************************************************/
function startup(data, reason) {
let onReady = function(e) {
if ( e ) {
this.removeEventListener(e.type, onReady);
}
let hDoc = Cc['@mozilla.org/appshell/appShellService;1']
.getService(Ci.nsIAppShellService)
.hiddenDOMWindow.document;
bgProcess = hDoc.documentElement.appendChild(
hDoc.createElementNS('http://www.w3.org/1999/xhtml', 'iframe')
);
bgProcess.setAttribute(
'src',
'chrome://' + hostName + '/content/background.html'
);
restartObserver.register();
};
if ( reason !== APP_STARTUP ) {
onReady();
return;
}
let ww = Cc['@mozilla.org/embedcomp/window-watcher;1']
.getService(Ci.nsIWindowWatcher);
ww.registerNotification({
observe: function(win) {
ww.unregisterNotification(this);
win.addEventListener('DOMContentLoaded', onReady);
}
});
}
/******************************************************************************/
function shutdown(data, reason) {
if ( reason === APP_SHUTDOWN ) {
return;
}
bgProcess.parentNode.removeChild(bgProcess);
// Remove the restartObserver only when the extension is being disabled
if ( data !== undefined ) {
restartObserver.unregister();
}
}
/******************************************************************************/
function install() {
// https://bugzil.la/719376
Cc['@mozilla.org/intl/stringbundle;1']
.getService(Ci.nsIStringBundleService).flushBundles();
}
/******************************************************************************/
function uninstall() {}
/******************************************************************************/