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Removes all listeners to the contextmenu event
// ==UserScript==
// @name Prevent contextmenu hijack
// @namespace http://github.com/kba
// @version 0.1
// @description Removes all listeners to the contextmenu event
// @author kba
// @match */*
// @grant GM_registerMenuCommand
// @grant GM_getValue
// @grant GM_setValue
// ==/UserScript==
/* jshint -W097 */
/* globals GM_getValue, GM_setValue, GM_registerMenuCommand */
'use strict';
function removeContextMenuListeners() {
document.oncontextmenu = null;
var elems = document.querySelectorAll('div,img,video,figure,main,article,section,header,footer');
for (var i = 0 ; i < elems.length ; i++) {
elems[i].oncontextmenu = null;
}
}
function isPermanent() { return GM_getValue('permanent'); }
function togglePermanent() { GM_setValue('permanent', ! isPermanent()); }
if (isPermanent()) {
setTimeout(removeContextMenuListeners, 500);
}
GM_registerMenuCommand('Allow Right-Click', removeContextMenuListeners);
GM_registerMenuCommand((isPermanent() ? 'Dis' : 'En') + 'able Permanent Allow Right-Click', togglePermanent);