mirror of
https://github.com/gorhill/uBlock.git
synced 2026-03-11 09:04:36 +00:00
a009623d97
Specifically, properly exclude generic cosmetic filters according to specific cosmetic exceptions. Related issue: https://github.com/uBlockOrigin/uBOL-home/issues/181
120 lines
3.8 KiB
JavaScript
120 lines
3.8 KiB
JavaScript
/*******************************************************************************
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uBlock Origin Lite - a comprehensive, MV3-compliant content blocker
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Copyright (C) 2014-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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// Important!
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// Isolate from global scope
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(function uBOL_cssDeclarative() {
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/******************************************************************************/
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const declarativeImports = self.declarativeImports || [];
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self.declarativeImports = undefined;
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/******************************************************************************/
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const selectors = [];
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const exceptions = [];
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const lookupHostname = (hostname, details, out) => {
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let seqi = details.hostnamesMap.get(hostname);
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if ( seqi === undefined ) { return; }
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const { argsList, argsSeqs } = details;
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for (;;) {
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const argi = argsSeqs[seqi++];
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const done = argi > 0;
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out.push(...argsList[done ? argi : -argi].split('\n'));
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if ( done ) { break; }
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}
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};
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const lookupAll = hostname => {
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for ( const details of declarativeImports ) {
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lookupHostname(hostname, details, selectors);
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lookupHostname(`~${hostname}`, details, exceptions);
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}
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};
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self.isolatedAPI.forEachHostname(lookupAll, {
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hasEntities: declarativeImports.some(a => a.hasEntities)
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});
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declarativeImports.length = 0;
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const exceptedSelectors = exceptions.length !== 0
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? selectors.filter(a => exceptions.includes(a) === false)
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: selectors;
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if ( exceptedSelectors.length === 0 ) { return; }
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/******************************************************************************/
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const cssRuleFromProcedural = details => {
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const { tasks, action } = details;
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let mq, selector;
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if ( Array.isArray(tasks) ) {
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if ( tasks[0][0] !== 'matches-media' ) { return; }
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mq = tasks[0][1];
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if ( tasks.length > 2 ) { return; }
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if ( tasks.length === 2 ) {
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if ( tasks[1][0] !== 'spath' ) { return; }
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selector = tasks[1][1];
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}
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}
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let style;
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if ( Array.isArray(action) ) {
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if ( action[0] !== 'style' ) { return; }
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selector = selector || details.selector;
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style = action[1];
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}
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if ( mq === undefined && style === undefined && selector === undefined ) { return; }
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if ( mq === undefined ) {
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return `${selector}\n{${style}}`;
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}
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if ( style === undefined ) {
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return `@media ${mq} {\n${selector}\n{display:none!important;}\n}`;
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}
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return `@media ${mq} {\n${selector}\n{${style}}\n}`;
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};
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const sheetText = [];
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for ( const selector of exceptedSelectors ) {
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const details = JSON.parse(selector);
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const ruleText = cssRuleFromProcedural(details);
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if ( ruleText === undefined ) { continue; }
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sheetText.push(ruleText);
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}
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if ( sheetText.length === 0 ) { return; }
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(function uBOL_injectCSS(css, count = 10) {
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chrome.runtime.sendMessage({ what: 'insertCSS', css }).catch(( ) => {
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count -= 1;
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if ( count === 0 ) { return; }
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uBOL_injectCSS(css, count);
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});
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})(sheetText.join('\n'));
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/******************************************************************************/
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})();
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/******************************************************************************/
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void 0;
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