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no need for mutation observer if no scripting on the page
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297df56d84
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@ -126,8 +126,7 @@ var messaging = (function(name){
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// ABP cosmetic filters
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var cosmeticFiltering = (function() {
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(function() {
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var queriedSelectors = {};
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var injectedSelectors = {};
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var classSelectors = null;
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@ -391,9 +390,34 @@ var cosmeticFiltering = (function() {
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domLoaded();
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return {
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processNodeLists: processNodeLists
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// Observe changes in the DOM only if...
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// - there is a document.body
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// - there is at least one `script` tag
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if ( !document.body || !document.querySelector('script') ) {
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return;
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}
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var mutationObservedHandler = function(mutations) {
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var iMutation = mutations.length;
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var nodeLists = [], nodeList;
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while ( iMutation-- ) {
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nodeList = mutations[iMutation].addedNodes;
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if ( nodeList && nodeList.length ) {
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nodeLists.push(nodeList);
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}
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}
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if ( nodeLists.length ) {
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processNodeLists(nodeLists);
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}
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};
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// https://github.com/gorhill/httpswitchboard/issues/176
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var observer = new MutationObserver(mutationObservedHandler);
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observer.observe(document.body, {
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attributes: false,
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childList: true,
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characterData: false,
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subtree: true
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});
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})();
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/******************************************************************************/
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@ -455,34 +479,4 @@ var cosmeticFiltering = (function() {
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/******************************************************************************/
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// Observe changes in the DOM
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var mutationObservedHandler = function(mutations) {
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var iMutation = mutations.length;
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var nodeLists = [], nodeList;
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while ( iMutation-- ) {
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nodeList = mutations[iMutation].addedNodes;
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if ( nodeList && nodeList.length ) {
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nodeLists.push(nodeList);
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}
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}
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if ( nodeLists.length ) {
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cosmeticFiltering.processNodeLists(nodeLists);
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}
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};
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// This fixes http://acid3.acidtests.org/
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if ( document.body ) {
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// https://github.com/gorhill/httpswitchboard/issues/176
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var observer = new MutationObserver(mutationObservedHandler);
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observer.observe(document.body, {
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attributes: false,
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childList: true,
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characterData: false,
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subtree: true
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});
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}
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/******************************************************************************/
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})();
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