mirror of
https://github.com/gorhill/uBlock.git
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98 lines
2.6 KiB
JavaScript
98 lines
2.6 KiB
JavaScript
/*******************************************************************************
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uBlock - a browser extension to block requests.
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Copyright (C) 2015 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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(function() {
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'use strict';
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/******************************************************************************/
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// https://github.com/gorhill/uBlock/issues/464
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if ( document instanceof HTMLDocument === false ) {
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//console.debug('cosmetic-on.js > not a HTLMDocument');
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return;
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}
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// This can happen
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if ( !vAPI ) {
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//console.debug('cosmetic-on.js > no vAPI');
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return;
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}
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/******************************************************************************/
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var styles = vAPI.styles;
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if ( Array.isArray(styles) === false ) {
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return;
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}
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/******************************************************************************/
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// Insert all cosmetic filtering-related style tags in the DOM
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var selectors = [];
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var reProperties = /\s*\{[^}]+\}\s*/;
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var style, i;
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var parent = document.head || document.body || document.documentElement;
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i = styles.length;
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while ( i-- ) {
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style = styles[i];
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if ( style.parentElement !== null ) {
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continue;
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}
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if ( parent === null ) {
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continue;
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}
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selectors.push(style.textContent.replace(reProperties, ''));
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parent.appendChild(style);
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}
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// Add `display: none !important` attribute
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if ( selectors.length === 0 ) {
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return;
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}
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var elems = [];
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try {
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elems = document.querySelectorAll(selectors.join(','));
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} catch (e) {
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}
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i = elems.length;
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while ( i-- ) {
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style = elems[i].style;
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if ( typeof style === 'object' || typeof style.removeProperty === 'function' ) {
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style.setProperty('display', 'none', 'important');
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}
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}
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/******************************************************************************/
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})();
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/******************************************************************************/
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