mirror of
https://github.com/yeongpin/cursor-free-vip.git
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73 lines
2.4 KiB
JavaScript
73 lines
2.4 KiB
JavaScript
/*******************************************************************************
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uBlock Origin - a comprehensive, efficient content blocker
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Copyright (C) 2015-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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'use strict';
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/******************************************************************************/
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// https://github.com/uBlockOrigin/uBlock-issues/issues/756
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// Keep in mind CPU usage with large DOM and/or filterset.
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(( ) => {
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if ( typeof vAPI !== 'object' ) { return; }
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const t0 = Date.now();
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if ( vAPI.domSurveyElements instanceof Object === false ) {
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vAPI.domSurveyElements = {
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busy: false,
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hiddenElementCount: Number.NaN,
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surveyTime: t0,
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};
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}
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const surveyResults = vAPI.domSurveyElements;
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if ( surveyResults.busy ) { return; }
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surveyResults.busy = true;
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if ( surveyResults.surveyTime < vAPI.domMutationTime ) {
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surveyResults.hiddenElementCount = Number.NaN;
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}
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surveyResults.surveyTime = t0;
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if ( isNaN(surveyResults.hiddenElementCount) ) {
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surveyResults.hiddenElementCount = (( ) => {
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if ( vAPI.domFilterer instanceof Object === false ) { return 0; }
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const details = vAPI.domFilterer.getAllSelectors(0b11);
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if (
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Array.isArray(details.declarative) === false ||
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details.declarative.length === 0
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) {
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return 0;
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}
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return document.querySelectorAll(
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details.declarative.join(',\n')
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).length;
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})();
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}
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surveyResults.busy = false;
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// IMPORTANT: This is returned to the injector, so this MUST be
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// the last statement.
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return surveyResults.hiddenElementCount;
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})();
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