uBlock/platform/mv3/extension/js/scripting/css-specific.entity.js

87 lines
2.7 KiB
JavaScript

/*******************************************************************************
uBlock Origin - a browser extension to block requests.
Copyright (C) 2019-present Raymond Hill
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
*/
/* jshint esversion:11 */
'use strict';
/******************************************************************************/
// Important!
// Isolate from global scope
(function uBOL_cssSpecificEntity() {
/******************************************************************************/
// $rulesetId$
const specificEntityImports = self.specificEntityImports || [];
/******************************************************************************/
const lookupSelectors = (hn, entity, out) => {
for ( const { argsList, entitiesMap } of specificEntityImports ) {
let argsIndices = entitiesMap.get(entity);
if ( argsIndices === undefined ) { continue; }
if ( typeof argsIndices === 'number' ) { argsIndices = [ argsIndices ]; }
for ( const argsIndex of argsIndices ) {
const details = argsList[argsIndex];
if ( details.n && details.n.includes(hn) ) { continue; }
out.push(details.a);
}
}
};
let hn = '';
try { hn = document.location.hostname; } catch(ex) { }
const selectors = [];
const hnparts = hn.split('.');
const hnpartslen = hnparts.length - 1;
for ( let i = 0; i < hnpartslen; i++ ) {
for ( let j = hnpartslen; j > i; j-- ) {
lookupSelectors(
hnparts.slice(i).join('.'),
hnparts.slice(i,j).join('.'),
selectors
);
}
}
self.specificEntityImports = undefined;
if ( selectors.length === 0 ) { return; }
try {
const sheet = new CSSStyleSheet();
sheet.replace(`@layer{${selectors.join(',')}{display:none!important;}}`);
document.adoptedStyleSheets = [
...document.adoptedStyleSheets,
sheet
];
} catch(ex) {
}
/******************************************************************************/
})();
/******************************************************************************/