mirror of
https://github.com/gorhill/uBlock.git
synced 2024-09-22 21:57:47 +02:00
857 lines
28 KiB
JavaScript
857 lines
28 KiB
JavaScript
/*******************************************************************************
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µBlock - a browser extension to block requests.
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Copyright (C) 2014 Raymond Hill
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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 vAPI, HTMLDocument */
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/******************************************************************************/
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// Injected into content pages
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(function() {
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'use strict';
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/******************************************************************************/
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// https://github.com/chrisaljoudi/uBlock/issues/464
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if ( document instanceof HTMLDocument === false ) {
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//console.debug('contentscript-end.js > not a HTLMDocument');
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return;
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}
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// I've seen this happens on Firefox
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if ( window.location === null ) {
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return;
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}
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// This can happen
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if ( typeof vAPI !== 'object' ) {
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//console.debug('contentscript-end.js > vAPI not found');
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return;
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}
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// https://github.com/chrisaljoudi/uBlock/issues/587
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// Pointless to execute without the start script having done its job.
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if ( !vAPI.contentscriptStartInjected ) {
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return;
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}
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// https://github.com/chrisaljoudi/uBlock/issues/456
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// Already injected?
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if ( vAPI.contentscriptEndInjected ) {
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//console.debug('contentscript-end.js > content script already injected');
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return;
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}
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vAPI.contentscriptEndInjected = true;
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vAPI.styles = vAPI.styles || [];
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/******************************************************************************/
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var messager = vAPI.messaging.channel('contentscript-end.js');
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// https://github.com/gorhill/uMatrix/issues/144
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vAPI.shutdown.add(function() {
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messager.close();
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});
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/******************************************************************************/
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/******************************************************************************/
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// https://github.com/chrisaljoudi/uBlock/issues/789
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// Be sure that specific cosmetic filters are still applied.
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// Executed once, then flushed from memory.
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(function() {
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// Were there specific cosmetic filters?
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if ( vAPI.specificHideStyle instanceof HTMLStyleElement === false ) {
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return;
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}
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// Is our style tag still in the DOM? (the guess is whatever parent there
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// is, it is in the DOM)
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if ( vAPI.specificHideStyle.parentNode !== null ) {
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return;
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}
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// Put it back
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var parent = document.head || document.documentElement;
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if ( parent ) {
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parent.appendChild(vAPI.specificHideStyle);
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}
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})();
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/******************************************************************************/
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/******************************************************************************/
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// https://github.com/chrisaljoudi/uBlock/issues/7
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var uBlockCollapser = (function() {
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var timer = null;
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var requestId = 1;
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var newRequests = [];
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var pendingRequests = {};
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var pendingRequestCount = 0;
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var srcProps = {
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'embed': 'src',
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'iframe': 'src',
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'img': 'src',
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'object': 'data'
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};
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var PendingRequest = function(target, tagName, attr) {
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this.id = requestId++;
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this.target = target;
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this.tagName = tagName;
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this.attr = attr;
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pendingRequests[this.id] = this;
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pendingRequestCount += 1;
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};
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// Because a while ago I have observed constructors are faster than
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// literal object instanciations.
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var BouncingRequest = function(id, tagName, url) {
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this.id = id;
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this.tagName = tagName;
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this.url = url;
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this.collapse = false;
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};
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var onProcessed = function(response) {
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// https://github.com/gorhill/uMatrix/issues/144
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if ( response.shutdown ) {
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vAPI.shutdown.exec();
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return;
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}
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var requests = response.result;
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if ( requests === null || Array.isArray(requests) === false ) {
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return;
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}
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var selectors = [];
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var i = requests.length;
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var request, entry, target, value;
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while ( i-- ) {
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request = requests[i];
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if ( pendingRequests.hasOwnProperty(request.id) === false ) {
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continue;
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}
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entry = pendingRequests[request.id];
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delete pendingRequests[request.id];
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pendingRequestCount -= 1;
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// https://github.com/chrisaljoudi/uBlock/issues/869
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if ( !request.collapse ) {
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continue;
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}
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target = entry.target;
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// https://github.com/chrisaljoudi/uBlock/issues/399
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// Never remove elements from the DOM, just hide them
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target.style.setProperty('display', 'none', 'important');
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// https://github.com/chrisaljoudi/uBlock/issues/1048
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// Use attribute to construct CSS rule
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if ( value = target.getAttribute(entry.attr) ) {
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selectors.push(entry.tagName + '[' + entry.attr + '="' + value + '"]');
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}
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}
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if ( selectors.length !== 0 ) {
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messager.send({
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what: 'cosmeticFiltersInjected',
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type: 'net',
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hostname: window.location.hostname,
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selectors: selectors
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});
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}
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// Renew map: I believe that even if all properties are deleted, an
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// object will still use more memory than a brand new one.
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if ( pendingRequestCount === 0 ) {
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pendingRequests = {};
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}
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};
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var send = function() {
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timer = null;
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messager.send({
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what: 'filterRequests',
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pageURL: window.location.href,
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pageHostname: window.location.hostname,
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requests: newRequests
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}, onProcessed);
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newRequests = [];
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};
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var process = function(delay) {
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if ( newRequests.length === 0 ) {
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return;
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}
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if ( delay === 0 ) {
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clearTimeout(timer);
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send();
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} else if ( timer === null ) {
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timer = vAPI.setTimeout(send, delay || 20);
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}
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};
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// If needed eventually, we could listen to `src` attribute changes
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// for iframes.
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var add = function(target) {
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var tagName = target.localName;
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var prop = srcProps[tagName];
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if ( prop === undefined ) {
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return;
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}
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// https://github.com/chrisaljoudi/uBlock/issues/174
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// Do not remove fragment from src URL
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var src = target[prop];
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if ( typeof src !== 'string' || src === '' ) {
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return;
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}
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if ( src.lastIndexOf('http', 0) !== 0 ) {
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return;
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}
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var req = new PendingRequest(target, tagName, prop);
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newRequests.push(new BouncingRequest(req.id, tagName, src));
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};
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var iframeSourceModified = function(mutations) {
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var i = mutations.length;
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while ( i-- ) {
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addIFrame(mutations[i].target, true);
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}
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process();
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};
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var iframeSourceObserver = new MutationObserver(iframeSourceModified);
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var iframeSourceObserverOptions = {
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attributes: true,
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attributeFilter: [ 'src' ]
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};
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var addIFrame = function(iframe, dontObserve) {
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// https://github.com/gorhill/uBlock/issues/162
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// Be prepared to deal with possible change of src attribute.
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if ( dontObserve !== true ) {
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iframeSourceObserver.observe(iframe, iframeSourceObserverOptions);
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}
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var src = iframe.src;
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if ( src === '' || typeof src !== 'string' ) {
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return;
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}
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if ( src.lastIndexOf('http', 0) !== 0 ) {
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return;
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}
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var req = new PendingRequest(iframe, 'iframe', 'src');
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newRequests.push(new BouncingRequest(req.id, 'iframe', src));
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};
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var iframesFromNode = function(node) {
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if ( node.localName === 'iframe' ) {
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addIFrame(node);
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}
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var iframes = node.querySelectorAll('iframe');
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var i = iframes.length;
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while ( i-- ) {
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addIFrame(iframes[i]);
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}
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process();
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};
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return {
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add: add,
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addIFrame: addIFrame,
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iframesFromNode: iframesFromNode,
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process: process
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};
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})();
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/******************************************************************************/
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/******************************************************************************/
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// Cosmetic filters
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(function() {
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if ( vAPI.skipCosmeticFiltering ) {
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//console.debug('Abort cosmetic filtering');
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return;
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}
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//console.debug('Starts cosmetic filtering');
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//var timer = window.performance || Date;
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//var tStart = timer.now();
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var queriedSelectors = {};
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var injectedSelectors = {};
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var lowGenericSelectors = [];
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var highGenerics = null;
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var contextNodes = [document];
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var nullArray = { push: function(){} };
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var retrieveGenericSelectors = function() {
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if ( lowGenericSelectors.length !== 0 || highGenerics === null ) {
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//console.log('µBlock> ABP cosmetic filters: retrieving CSS rules using %d selectors', lowGenericSelectors.length);
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messager.send({
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what: 'retrieveGenericCosmeticSelectors',
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pageURL: window.location.href,
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selectors: lowGenericSelectors,
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firstSurvey: highGenerics === null
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},
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retrieveHandler
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);
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// https://github.com/chrisaljoudi/uBlock/issues/452
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retrieveHandler = nextRetrieveHandler;
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} else {
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nextRetrieveHandler(null);
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}
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lowGenericSelectors = [];
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};
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// https://github.com/chrisaljoudi/uBlock/issues/452
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// This needs to be executed *after* the response from our query is
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// received, not at `DOMContentLoaded` time, or else there is a good
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// likeliness to outrun contentscript-start.js, which may still be waiting
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// on a response from its own query.
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var firstRetrieveHandler = function(response) {
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// https://github.com/chrisaljoudi/uBlock/issues/158
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// Ensure injected styles are enforced
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// rhill 2014-11-16: not sure this is needed anymore. Test case in
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// above issue was fine without the line below..
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var selectors = vAPI.hideCosmeticFilters;
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if ( typeof selectors === 'object' ) {
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injectedSelectors = selectors;
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hideElements(Object.keys(selectors));
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}
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// Add exception filters into injected filters collection, in order
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// to force them to be seen as "already injected".
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selectors = vAPI.donthideCosmeticFilters;
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if ( typeof selectors === 'object' ) {
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for ( var selector in selectors ) {
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if ( selectors.hasOwnProperty(selector) ) {
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injectedSelectors[selector] = true;
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}
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}
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}
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// Flush dead code from memory
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firstRetrieveHandler = null;
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// These are sent only once
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var result = response && response.result;
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if ( result ) {
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if ( result.highGenerics ) {
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highGenerics = result.highGenerics;
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}
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if ( result.donthide ) {
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processLowGenerics(result.donthide, nullArray);
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}
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}
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nextRetrieveHandler(response);
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};
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var nextRetrieveHandler = function(response) {
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// https://github.com/gorhill/uMatrix/issues/144
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if ( response && response.shutdown ) {
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vAPI.shutdown.exec();
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return;
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}
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//var tStart = timer.now();
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//console.debug('µBlock> contextNodes = %o', contextNodes);
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var result = response && response.result;
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var hideSelectors = [];
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if ( result && result.hide.length ) {
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processLowGenerics(result.hide, hideSelectors);
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}
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if ( highGenerics ) {
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if ( highGenerics.hideLowCount ) {
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processHighLowGenerics(highGenerics.hideLow, hideSelectors);
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}
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if ( highGenerics.hideMediumCount ) {
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processHighMediumGenerics(highGenerics.hideMedium, hideSelectors);
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}
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if ( highGenerics.hideHighCount ) {
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processHighHighGenericsAsync();
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}
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}
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if ( hideSelectors.length !== 0 ) {
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addStyleTag(hideSelectors);
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}
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contextNodes.length = 0;
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//console.debug('%f: uBlock: CSS injection time', timer.now() - tStart);
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};
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var retrieveHandler = firstRetrieveHandler;
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// Ensure elements matching a set of selectors are visually removed
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// from the page, by:
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// - Modifying the style property on the elements themselves
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// - Injecting a style tag
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var addStyleTag = function(selectors) {
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var selectorStr = selectors.join(',\n');
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var style = document.createElement('style');
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// The linefeed before the style block is very important: do no remove!
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style.appendChild(document.createTextNode(selectorStr + '\n{display:none !important;}'));
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var parent = document.body || document.documentElement;
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if ( parent ) {
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parent.appendChild(style);
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vAPI.styles.push(style);
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}
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hideElements(selectorStr);
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messager.send({
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what: 'cosmeticFiltersInjected',
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type: 'cosmetic',
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hostname: window.location.hostname,
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selectors: selectors
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});
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//console.debug('µBlock> generic cosmetic filters: injecting %d CSS rules:', selectors.length, text);
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};
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var hideElements = function(selectors) {
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// https://github.com/chrisaljoudi/uBlock/issues/207
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// Do not call querySelectorAll() using invalid CSS selectors
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if ( selectors.length === 0 ) {
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return;
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}
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if ( document.body === null ) {
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return;
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}
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// https://github.com/chrisaljoudi/uBlock/issues/158
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// Using CSSStyleDeclaration.setProperty is more reliable
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var elems = document.querySelectorAll(selectors);
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var i = elems.length;
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while ( i-- ) {
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elems[i].style.setProperty('display', 'none', 'important');
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}
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};
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// Extract and return the staged nodes which (may) match the selectors.
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var selectNodes = function(selector) {
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var targetNodes = [];
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var i = contextNodes.length;
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var node, nodeList, j;
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var doc = document;
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while ( i-- ) {
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node = contextNodes[i];
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if ( node === doc ) {
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return doc.querySelectorAll(selector);
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}
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targetNodes.push(node);
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nodeList = node.querySelectorAll(selector);
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j = nodeList.length;
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while ( j-- ) {
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targetNodes.push(nodeList[j]);
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}
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}
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return targetNodes;
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};
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// Low generics:
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// - [id]
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// - [class]
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var processLowGenerics = function(generics, out) {
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var i = generics.length;
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var selector;
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while ( i-- ) {
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selector = generics[i];
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if ( injectedSelectors.hasOwnProperty(selector) ) {
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continue;
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}
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injectedSelectors[selector] = true;
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out.push(selector);
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}
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};
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// High-low generics:
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// - [alt="..."]
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// - [title="..."]
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var processHighLowGenerics = function(generics, out) {
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var attrs = ['title', 'alt'];
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var attr, attrValue, nodeList, iNode, node;
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var selector;
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while ( attr = attrs.pop() ) {
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nodeList = selectNodes('[' + attr + ']');
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iNode = nodeList.length;
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while ( iNode-- ) {
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node = nodeList[iNode];
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attrValue = node.getAttribute(attr);
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if ( !attrValue ) { continue; }
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// Candidate 1 = generic form
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// If generic form is injected, no need to process the specific
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// form, as the generic will affect all related specific forms
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selector = '[' + attr + '="' + attrValue + '"]';
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if ( generics.hasOwnProperty(selector) ) {
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if ( injectedSelectors.hasOwnProperty(selector) === false ) {
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injectedSelectors[selector] = true;
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out.push(selector);
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continue;
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}
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}
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// Candidate 2 = specific form
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selector = node.localName + selector;
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if ( generics.hasOwnProperty(selector) ) {
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if ( injectedSelectors.hasOwnProperty(selector) === false ) {
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injectedSelectors[selector] = true;
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out.push(selector);
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}
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}
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}
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}
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};
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// High-medium generics:
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// - [href^="http"]
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var processHighMediumGenerics = function(generics, out) {
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var nodeList = selectNodes('a[href^="http"]');
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var iNode = nodeList.length;
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var node, href, pos, hash, selectors, selector, iSelector;
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while ( iNode-- ) {
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node = nodeList[iNode];
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href = node.getAttribute('href');
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if ( !href ) { continue; }
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pos = href.indexOf('://');
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if ( pos === -1 ) { continue; }
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hash = href.slice(pos + 3, pos + 11);
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selectors = generics[hash];
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if ( selectors === undefined ) { continue; }
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iSelector = selectors.length;
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while ( iSelector-- ) {
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selector = selectors[iSelector];
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if ( injectedSelectors.hasOwnProperty(selector) === false ) {
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injectedSelectors[selector] = true;
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out.push(selector);
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}
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}
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}
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};
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// High-high generics are *very costly* to process, so we will coalesce
|
|
// requests to process high-high generics into as few requests as possible.
|
|
// The gain is *significant* on bloated pages.
|
|
|
|
var processHighHighGenericsMisses = 8;
|
|
var processHighHighGenericsTimer = null;
|
|
|
|
var processHighHighGenerics = function() {
|
|
processHighHighGenericsTimer = null;
|
|
if ( highGenerics.hideHigh === '' ) {
|
|
return;
|
|
}
|
|
if ( injectedSelectors.hasOwnProperty('{{highHighGenerics}}') ) {
|
|
return;
|
|
}
|
|
//var tStart = timer.now();
|
|
if ( document.querySelector(highGenerics.hideHigh) === null ) {
|
|
//console.debug('%f: high-high generic test time', timer.now() - tStart);
|
|
processHighHighGenericsMisses -= 1;
|
|
// Too many misses for these nagging highly generic CSS rules,
|
|
// so we will just skip them from now on.
|
|
if ( processHighHighGenericsMisses === 0 ) {
|
|
injectedSelectors['{{highHighGenerics}}'] = true;
|
|
//console.debug('high-high generic: apparently not needed...');
|
|
}
|
|
return;
|
|
}
|
|
injectedSelectors['{{highHighGenerics}}'] = true;
|
|
// We need to filter out possible exception cosmetic filters from
|
|
// high-high generics selectors.
|
|
var selectors = highGenerics.hideHigh.split(',\n');
|
|
var i = selectors.length;
|
|
var selector;
|
|
while ( i-- ) {
|
|
selector = selectors[i];
|
|
if ( injectedSelectors.hasOwnProperty(selector) ) {
|
|
selectors.splice(i, 1);
|
|
} else {
|
|
injectedSelectors[selector] = true;
|
|
}
|
|
}
|
|
if ( selectors.length !== 0 ) {
|
|
addStyleTag(selectors);
|
|
}
|
|
};
|
|
|
|
var processHighHighGenericsAsync = function() {
|
|
if ( processHighHighGenericsTimer !== null ) {
|
|
clearTimeout(processHighHighGenericsTimer);
|
|
}
|
|
processHighHighGenericsTimer = vAPI.setTimeout(processHighHighGenerics, 300);
|
|
};
|
|
|
|
// Extract all ids: these will be passed to the cosmetic filtering
|
|
// engine, and in return we will obtain only the relevant CSS selectors.
|
|
|
|
var idsFromNodeList = function(nodes) {
|
|
if ( !nodes || !nodes.length ) {
|
|
return;
|
|
}
|
|
var qq = queriedSelectors;
|
|
var ll = lowGenericSelectors;
|
|
var node, v;
|
|
var i = nodes.length;
|
|
while ( i-- ) {
|
|
node = nodes[i];
|
|
if ( node.nodeType !== 1 ) { continue; }
|
|
// id
|
|
v = nodes[i].id;
|
|
if ( typeof v !== 'string' ) { continue; }
|
|
v = v.trim();
|
|
if ( v === '' ) { continue; }
|
|
v = '#' + v;
|
|
if ( qq.hasOwnProperty(v) ) { continue; }
|
|
ll.push(v);
|
|
qq[v] = true;
|
|
}
|
|
};
|
|
|
|
// Extract all classes: these will be passed to the cosmetic filtering
|
|
// engine, and in return we will obtain only the relevant CSS selectors.
|
|
|
|
var classesFromNodeList = function(nodes) {
|
|
if ( !nodes || !nodes.length ) {
|
|
return;
|
|
}
|
|
var qq = queriedSelectors;
|
|
var ll = lowGenericSelectors;
|
|
var node, v, vv, j;
|
|
var i = nodes.length;
|
|
while ( i-- ) {
|
|
node = nodes[i];
|
|
// http://jsperf.com/enumerate-classes
|
|
// Chromium: classList a bit faster than manually enumerating
|
|
// class names.
|
|
// Firefox: classList quite slower than manually enumerating
|
|
// class names.
|
|
vv = node.classList;
|
|
if ( typeof vv !== 'object' ) { continue; }
|
|
j = vv.length || 0;
|
|
while ( j-- ) {
|
|
v = vv[j];
|
|
if ( typeof v !== 'string' ) { continue; }
|
|
v = '.' + v;
|
|
if ( qq.hasOwnProperty(v) ) { continue; }
|
|
ll.push(v);
|
|
qq[v] = true;
|
|
}
|
|
}
|
|
};
|
|
|
|
// Start cosmetic filtering.
|
|
|
|
idsFromNodeList(document.querySelectorAll('[id]'));
|
|
classesFromNodeList(document.querySelectorAll('[class]'));
|
|
retrieveGenericSelectors();
|
|
|
|
//console.debug('%f: uBlock: survey time', timer.now() - tStart);
|
|
|
|
// Below this point is the code which takes care to observe changes in
|
|
// the page and to add if needed relevant CSS rules as a result of the
|
|
// changes.
|
|
|
|
// Observe changes in the DOM only if...
|
|
// - there is a document.body
|
|
// - there is at least one `script` tag
|
|
if ( !document.body || !document.querySelector('script') ) {
|
|
return;
|
|
}
|
|
|
|
// https://github.com/chrisaljoudi/uBlock/issues/618
|
|
// Following is to observe dynamically added iframes:
|
|
// - On Firefox, the iframes fails to fire a `load` event
|
|
|
|
var ignoreTags = {
|
|
'link': true,
|
|
'script': true,
|
|
'style': true
|
|
};
|
|
|
|
// Added node lists will be cumulated here before being processed
|
|
var addedNodeLists = [];
|
|
var addedNodeListsTimer = null;
|
|
var collapser = uBlockCollapser;
|
|
|
|
var treeMutationObservedHandler = function() {
|
|
var nodeList, iNode, node;
|
|
while ( nodeList = addedNodeLists.pop() ) {
|
|
iNode = nodeList.length;
|
|
while ( iNode-- ) {
|
|
node = nodeList[iNode];
|
|
if ( node.nodeType !== 1 ) {
|
|
continue;
|
|
}
|
|
if ( ignoreTags.hasOwnProperty(node.localName) ) {
|
|
continue;
|
|
}
|
|
contextNodes.push(node);
|
|
collapser.iframesFromNode(node);
|
|
}
|
|
}
|
|
addedNodeListsTimer = null;
|
|
if ( contextNodes.length !== 0 ) {
|
|
idsFromNodeList(selectNodes('[id]'));
|
|
classesFromNodeList(selectNodes('[class]'));
|
|
retrieveGenericSelectors();
|
|
|
|
// This is required: a new element could be matching an already
|
|
// injected but otherwise inactive cosmetic filter. This means
|
|
// the already injected cosmetic filter become active (has an
|
|
// effect on the document), and thus must be logged if needed.
|
|
messager.send({ what: 'cosmeticFiltersActivated' });
|
|
}
|
|
};
|
|
|
|
// https://github.com/chrisaljoudi/uBlock/issues/205
|
|
// Do not handle added node directly from within mutation observer.
|
|
var treeMutationObservedHandlerAsync = function(mutations) {
|
|
var iMutation = mutations.length;
|
|
var nodeList;
|
|
while ( iMutation-- ) {
|
|
nodeList = mutations[iMutation].addedNodes;
|
|
if ( nodeList.length !== 0 ) {
|
|
addedNodeLists.push(nodeList);
|
|
}
|
|
}
|
|
if ( addedNodeListsTimer === null ) {
|
|
// I arbitrarily chose 100 ms for now:
|
|
// I have to compromise between the overhead of processing too few
|
|
// nodes too often and the delay of many nodes less often.
|
|
addedNodeListsTimer = vAPI.setTimeout(treeMutationObservedHandler, 100);
|
|
}
|
|
};
|
|
|
|
//console.debug('Starts cosmetic filtering\'s mutations observer');
|
|
|
|
// https://github.com/gorhill/httpswitchboard/issues/176
|
|
var treeObserver = new MutationObserver(treeMutationObservedHandlerAsync);
|
|
treeObserver.observe(document.body, {
|
|
childList: true,
|
|
subtree: true
|
|
});
|
|
|
|
// https://github.com/gorhill/uMatrix/issues/144
|
|
vAPI.shutdown.add(function() {
|
|
treeObserver.disconnect();
|
|
if ( addedNodeListsTimer !== null ) {
|
|
clearTimeout(addedNodeListsTimer);
|
|
}
|
|
});
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// Permanent
|
|
|
|
// Listener to collapse blocked resources.
|
|
// - Future requests not blocked yet
|
|
// - Elements dynamically added to the page
|
|
// - Elements which resource URL changes
|
|
|
|
(function() {
|
|
var onResourceFailed = function(ev) {
|
|
//console.debug('onResourceFailed(%o)', ev);
|
|
uBlockCollapser.add(ev.target);
|
|
uBlockCollapser.process();
|
|
};
|
|
document.addEventListener('error', onResourceFailed, true);
|
|
|
|
// https://github.com/gorhill/uMatrix/issues/144
|
|
vAPI.shutdown.add(function() {
|
|
document.removeEventListener('error', onResourceFailed, true);
|
|
});
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// https://github.com/chrisaljoudi/uBlock/issues/7
|
|
|
|
// Executed only once
|
|
|
|
(function() {
|
|
var collapser = uBlockCollapser;
|
|
var elems, i, elem;
|
|
|
|
elems = document.querySelectorAll('embed, object');
|
|
i = elems.length;
|
|
while ( i-- ) {
|
|
collapser.add(elems[i]);
|
|
}
|
|
|
|
elems = document.querySelectorAll('img');
|
|
i = elems.length;
|
|
while ( i-- ) {
|
|
elem = elems[i];
|
|
if ( elem.complete ) {
|
|
collapser.add(elem);
|
|
}
|
|
}
|
|
|
|
elems = document.querySelectorAll('iframe');
|
|
i = elems.length;
|
|
while ( i-- ) {
|
|
collapser.addIFrame(elems[i]);
|
|
}
|
|
collapser.process(0);
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
// To send mouse coordinates to context menu handler, as the chrome API fails
|
|
// to provide the mouse position to context menu listeners.
|
|
// This could be inserted in its own content script, but it's so simple that
|
|
// I feel it's not worth the overhead.
|
|
|
|
// Ref.: https://developer.mozilla.org/en-US/docs/Web/Events/contextmenu
|
|
|
|
(function() {
|
|
if ( window !== window.top ) {
|
|
return;
|
|
}
|
|
var onContextMenu = function(ev) {
|
|
messager.send({
|
|
what: 'contextMenuEvent',
|
|
clientX: ev.clientX,
|
|
clientY: ev.clientY
|
|
});
|
|
};
|
|
|
|
window.addEventListener('contextmenu', onContextMenu, true);
|
|
|
|
// https://github.com/gorhill/uMatrix/issues/144
|
|
vAPI.shutdown.add(function() {
|
|
document.removeEventListener('contextmenu', onContextMenu, true);
|
|
});
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
/******************************************************************************/
|
|
|
|
})();
|
|
|
|
/******************************************************************************/
|