mirror of
https://github.com/gorhill/uBlock.git
synced 2026-03-11 09:04:36 +00:00
72726a4759
Specifically, avoid long list of hostnames for the `matches` property[1] when registering the content scripts, as this was causing whole browser freeze for long seconds in Chromium-based browsers (reason unknown). The content scripts themselves will sort out which cosmetic filters to apply on which websites. This change makes it now possible to support annoyances-related lists, and thus two lists have been added: - EasyList -- Annoyances - EasyList -- Cookies Related issue: - https://github.com/uBlockOrigin/uBOL-issues/issues/5 These annoyances-related lists contains many thousands of specific cosmetic filters and as a result, before the above change this was causing long seconds of whole browser freeze when simply modifying the blocking mode of a specific site via the slider in the popup panel. It is now virtually instantaneous, at the cost of injecting larger cosmetic filtering-related content scripts (which typically should be garbage-collected within single-digit milliseconds). Also, added support for entity-based cosmetic filters. (They were previously discarded). --- [1] https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/scripting/RegisteredContentScript
122 lines
4 KiB
JavaScript
122 lines
4 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a browser extension to block requests.
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Copyright (C) 2019-present 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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/* jshint esversion:11 */
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'use strict';
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/******************************************************************************/
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// Important!
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// Isolate from global scope
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(function uBOL_cssSpecific() {
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/******************************************************************************/
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const specificImports = self.specificImports || [];
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self.specificImports = undefined;
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delete self.specificImports;
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/******************************************************************************/
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const hnParts = [];
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try { hnParts.push(...document.location.hostname.split('.')); }
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catch(ex) { }
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const hnpartslen = hnParts.length;
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if ( hnpartslen === 0 ) { return; }
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const selectors = [];
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for ( const { argsList, exceptionsMap, hostnamesMap, entitiesMap } of specificImports ) {
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const todoIndices = new Set();
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const tonotdoIndices = [];
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// Exceptions
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if ( exceptionsMap.size !== 0 ) {
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for ( let i = 0; i < hnpartslen; i++ ) {
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const hn = hnParts.slice(i).join('.');
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const excepted = exceptionsMap.get(hn);
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if ( excepted ) { tonotdoIndices.push(...excepted); }
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}
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exceptionsMap.clear();
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}
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// Hostname-based
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if ( hostnamesMap.size !== 0 ) {
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const collectArgIndices = hn => {
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let argsIndices = hostnamesMap.get(hn);
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if ( argsIndices === undefined ) { return; }
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if ( typeof argsIndices === 'number' ) { argsIndices = [ argsIndices ]; }
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for ( const argsIndex of argsIndices ) {
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if ( tonotdoIndices.includes(argsIndex) ) { continue; }
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todoIndices.add(argsIndex);
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}
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};
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for ( let i = 0; i < hnpartslen; i++ ) {
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const hn = hnParts.slice(i).join('.');
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collectArgIndices(hn);
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}
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collectArgIndices('*');
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hostnamesMap.clear();
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}
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// Entity-based
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if ( entitiesMap.size !== 0 ) {
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const n = hnpartslen - 1;
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for ( let i = 0; i < n; i++ ) {
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for ( let j = n; j > i; j-- ) {
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const en = hnParts.slice(i,j).join('.');
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let argsIndices = entitiesMap.get(en);
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if ( argsIndices === undefined ) { continue; }
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if ( typeof argsIndices === 'number' ) { argsIndices = [ argsIndices ]; }
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for ( const argsIndex of argsIndices ) {
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if ( tonotdoIndices.includes(argsIndex) ) { continue; }
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todoIndices.add(argsIndex);
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}
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}
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}
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entitiesMap.clear();
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}
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for ( const i of todoIndices ) {
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selectors.push(argsList[i]);
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}
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argsList.length = 0;
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}
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specificImports.length = 0;
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if ( selectors.length === 0 ) { return; }
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/******************************************************************************/
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try {
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const sheet = new CSSStyleSheet();
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sheet.replace(`@layer{${selectors.join(',')}{display:none!important;}}`);
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document.adoptedStyleSheets = [
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...document.adoptedStyleSheets,
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sheet
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];
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} catch(ex) {
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}
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/******************************************************************************/
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})();
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/******************************************************************************/
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void 0;
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