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@ -219,7 +219,10 @@ var nodesAddedHandler = function(nodeList, summary) {
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var i = 0;
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var node, src, text;
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while ( node = nodeList.item(i++) ) {
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if ( !node.tagName ) {
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if ( node.nodeType !== 1 ) {
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continue;
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}
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if ( typeof node.tagName !== 'string' ) {
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continue;
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}
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@ -273,6 +276,10 @@ var nodesAddedHandler = function(nodeList, summary) {
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/******************************************************************************/
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var nodeListsAddedHandler = function(nodeLists) {
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var i = nodeLists.length;
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if ( i === 0 ) {
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return;
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}
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var summary = {
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what: 'contentScriptSummary',
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locationURL: window.location.href,
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@ -280,7 +287,6 @@ var nodeListsAddedHandler = function(nodeLists) {
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pluginSources: {}, // to avoid duplicates
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mustReport: false
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};
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var i = nodeLists.length;
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while ( i-- ) {
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nodesAddedHandler(nodeLists[i], summary);
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}
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@ -330,28 +336,42 @@ if ( /^https?:\/\/./.test(window.location.href) === false ) {
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// Observe changes in the DOM
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var mutationObservedHandler = function(mutations) {
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var i = mutations.length;
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var nodeLists = [], nodeList;
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while ( i-- ) {
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nodeList = mutations[i].addedNodes;
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if ( nodeList && nodeList.length ) {
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nodeLists.push(nodeList);
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// Added node lists will be cumulated here before being processed
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var addedNodeLists = [];
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var addedNodeListsTimer = null;
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var treeMutationObservedHandler = function() {
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nodeListsAddedHandler(addedNodeLists);
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addedNodeListsTimer = null;
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addedNodeLists = [];
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};
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// https://github.com/gorhill/uBlock/issues/205
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// Do not handle added node directly from within mutation observer.
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var treeMutationObservedHandlerAsync = function(mutations) {
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var iMutation = mutations.length;
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var nodeList;
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while ( iMutation-- ) {
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nodeList = mutations[iMutation].addedNodes;
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if ( nodeList.length !== 0 ) {
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addedNodeLists.push(nodeList);
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}
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}
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if ( nodeLists.length ) {
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nodeListsAddedHandler(nodeLists);
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// I arbitrarily chose 250 ms for now:
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// I have to compromise between the overhead of processing too few
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// nodes too often and the delay of many nodes less often. There is nothing
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// time critical here.
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if ( addedNodeListsTimer === null ) {
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addedNodeListsTimer = setTimeout(treeMutationObservedHandler, 250);
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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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var treeObserver = new MutationObserver(treeMutationObservedHandlerAsync);
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treeObserver.observe(document.body, {
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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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