mirror of https://github.com/gorhill/uBlock.git
Add ability to linger for `remove-class` scriptlet
Similar to related change for the `remove-attr` scriptlet:
- 0f330c7359
Related feedback:
- https://www.reddit.com/r/uBlockOrigin/comments/nsroaw/some_elements_isare_not_removed_after_the_cookie/
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@ -764,7 +764,10 @@
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if ( selector === '' || selector === '{{2}}' ) {
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selector = '.' + tokens.map(a => CSS.escape(a)).join(',.');
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}
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let behavior = '{{3}}';
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let timer;
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const rmclass = function() {
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timer = undefined;
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try {
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const nodes = document.querySelectorAll(selector);
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for ( const node of nodes ) {
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@ -773,14 +776,39 @@
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} catch(ex) {
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}
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};
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if ( document.readyState === 'loading' ) {
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window.addEventListener(
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'DOMContentLoaded',
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rmclass,
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{ capture: true, once: true }
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);
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} else {
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const mutationHandler = mutations => {
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if ( timer !== undefined ) { return; }
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let skip = true;
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for ( let i = 0; i < mutations.length && skip; i++ ) {
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const { type, addedNodes, removedNodes } = mutations[i];
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if ( type === 'attributes' ) { skip = false; }
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for ( let j = 0; j < addedNodes.length && skip; j++ ) {
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if ( addedNodes[j].nodeType === 1 ) { skip = false; break; }
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}
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for ( let j = 0; j < removedNodes.length && skip; j++ ) {
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if ( removedNodes[j].nodeType === 1 ) { skip = false; break; }
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}
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}
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if ( skip ) { return; }
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timer = self.requestIdleCallback(rmclass, { timeout: 67 });
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};
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const start = ( ) => {
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rmclass();
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if ( /\bstay\b/.test(behavior) === false ) { return; }
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const observer = new MutationObserver(mutationHandler);
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observer.observe(document.documentElement, {
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attributes: true,
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attributeFilter: [ 'class' ],
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childList: true,
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subtree: true,
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});
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};
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if ( document.readyState !== 'complete' && /\bcomplete\b/.test(behavior) ) {
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self.addEventListener('load', start, { once: true });
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} else if ( document.readyState === 'loading' ) {
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self.addEventListener('DOMContentLoaded', start, { once: true });
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} else {
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start();
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}
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})();
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