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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
*/
/******************************************************************************/
// https://developer.mozilla.org/en-US/Firefox/Multiprocess_Firefox/Frame_script_environment
(function(context) {
'use strict';
/******************************************************************************/
let {contentObserver, LocationChangeListener} = Components.utils.import(
Components.stack.filename.replace('Script', 'Module'),
null
);
let injectContentScripts = function(win) {
if ( !win || !win.document ) {
return;
}
contentObserver.observe(win.document);
if ( win.frames && win.frames.length ) {
let i = win.frames.length;
while ( i-- ) {
injectContentScripts(win.frames[i]);
}
}
};
let onLoadCompleted = function() {
context.removeMessageListener('ublock0-load-completed', onLoadCompleted);
injectContentScripts(context.content);
};
context.addMessageListener('ublock0-load-completed', onLoadCompleted);
let shutdown = function(ev) {
if ( ev.target !== context ) {
return;
}
context.removeMessageListener('ublock0-load-completed', onLoadCompleted);
context.removeEventListener('unload', shutdown);
context.locationChangeListener = null;
LocationChangeListener = null;
contentObserver = null;
};
context.addEventListener('unload', shutdown);
if ( context.docShell ) {
let Ci = Components.interfaces;
let wp = context.docShell.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebProgress);
let dw = wp.DOMWindow;
if ( dw === dw.top ) {
context.locationChangeListener = new LocationChangeListener(context.docShell);
}
}
/******************************************************************************/
})(this);
/******************************************************************************/
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