mirror of https://github.com/gorhill/uBlock
704 lines
22 KiB
JavaScript
704 lines
22 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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import { dom, qs$, qsa$ } from './dom.js';
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/******************************************************************************/
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(( ) => {
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/******************************************************************************/
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const logger = self.logger;
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const showdomButton = qs$('#showdom');
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const inspector = qs$('#domInspector');
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const domTree = qs$('#domTree');
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const filterToIdMap = new Map();
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let inspectedTabId = 0;
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let inspectedHostname = '';
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let uidGenerator = 1;
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/*******************************************************************************
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*
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* How it works:
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*
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* 1. The logger/inspector is enabled from the logger window
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*
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* 2. The inspector content script is injected in the root frame of the tab
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* currently selected in the logger
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*
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* 3. The inspector content script asks the logger/inspector to establish
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* a two-way communication channel
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*
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* 3. The inspector content script embed an inspector frame in the document
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* being inspected and waits for the inspector frame to be fully loaded
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*
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* 4. The inspector content script sends a messaging port object to the
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* embedded inspector frame for a two-way communication channel between
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* the inspector frame and the inspector content script
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*
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* 5. The inspector content script sends dom information to the
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* logger/inspector
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*
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* */
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const contentInspectorChannel = (( ) => {
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let bcChannel;
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let toContentPort;
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const start = ( ) => {
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bcChannel = new globalThis.BroadcastChannel('contentInspectorChannel');
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bcChannel.onmessage = ev => {
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const msg = ev.data || {};
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connect(msg.tabId, msg.frameId);
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};
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browser.webNavigation.onDOMContentLoaded.addListener(onContentLoaded);
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};
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const shutdown = ( ) => {
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browser.webNavigation.onDOMContentLoaded.removeListener(onContentLoaded);
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disconnect();
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bcChannel.close();
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bcChannel.onmessage = null;
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bcChannel = undefined;
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};
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const connect = (tabId, frameId) => {
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disconnect();
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try {
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toContentPort = browser.tabs.connect(tabId, { frameId });
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toContentPort.onMessage.addListener(onContentMessage);
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toContentPort.onDisconnect.addListener(onContentDisconnect);
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} catch(_) {
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}
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};
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const disconnect = ( ) => {
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if ( toContentPort === undefined ) { return; }
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toContentPort.onMessage.removeListener(onContentMessage);
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toContentPort.onDisconnect.removeListener(onContentDisconnect);
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toContentPort.disconnect();
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toContentPort = undefined;
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};
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const send = msg => {
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if ( toContentPort === undefined ) { return; }
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toContentPort.postMessage(msg);
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};
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const onContentMessage = msg => {
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if ( msg.what === 'domLayoutFull' ) {
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inspectedHostname = msg.hostname;
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renderDOMFull(msg);
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} else if ( msg.what === 'domLayoutIncremental' ) {
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renderDOMIncremental(msg);
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}
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};
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const onContentDisconnect = ( ) => {
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disconnect();
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};
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const onContentLoaded = details => {
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if ( details.tabId !== inspectedTabId ) { return; }
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if ( details.frameId !== 0 ) { return; }
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disconnect();
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injectInspector();
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};
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return { start, disconnect, send, shutdown };
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})();
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/******************************************************************************/
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const nodeFromDomEntry = entry => {
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const li = document.createElement('li');
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dom.attr(li, 'id', entry.nid);
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// expander/collapser
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li.appendChild(document.createElement('span'));
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// selector
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let node = document.createElement('code');
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node.textContent = entry.sel;
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li.appendChild(node);
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// descendant count
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let value = entry.cnt || 0;
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node = document.createElement('span');
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node.textContent = value !== 0 ? value.toLocaleString() : '';
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dom.attr(node, 'data-cnt', value);
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li.appendChild(node);
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// cosmetic filter
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if ( entry.filter === undefined ) {
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return li;
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}
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node = document.createElement('code');
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dom.cl.add(node, 'filter');
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value = filterToIdMap.get(entry.filter);
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if ( value === undefined ) {
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value = `${uidGenerator}`;
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filterToIdMap.set(entry.filter, value);
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uidGenerator += 1;
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}
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dom.attr(node, 'data-filter-id', value);
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node.textContent = entry.filter;
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li.appendChild(node);
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dom.cl.add(li, 'isCosmeticHide');
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return li;
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};
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/******************************************************************************/
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const appendListItem = (ul, li) => {
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ul.appendChild(li);
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// Ancestor nodes of a node which is affected by a cosmetic filter will
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// be marked as "containing cosmetic filters", for user convenience.
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if ( dom.cl.has(li, 'isCosmeticHide') === false ) { return; }
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for (;;) {
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li = li.parentElement.parentElement;
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if ( li === null ) { break; }
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dom.cl.add(li, 'hasCosmeticHide');
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}
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};
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/******************************************************************************/
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const renderDOMFull = response => {
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const domTreeParent = domTree.parentElement;
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let ul = domTreeParent.removeChild(domTree);
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logger.removeAllChildren(domTree);
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filterToIdMap.clear();
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let lvl = 0;
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let li;
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for ( const entry of response.layout ) {
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if ( entry.lvl === lvl ) {
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li = nodeFromDomEntry(entry);
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appendListItem(ul, li);
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continue;
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}
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if ( entry.lvl > lvl ) {
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ul = document.createElement('ul');
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li.appendChild(ul);
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dom.cl.add(li, 'branch');
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li = nodeFromDomEntry(entry);
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appendListItem(ul, li);
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lvl = entry.lvl;
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continue;
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}
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// entry.lvl < lvl
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while ( entry.lvl < lvl ) {
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ul = li.parentNode;
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li = ul.parentNode;
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ul = li.parentNode;
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lvl -= 1;
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}
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li = nodeFromDomEntry(entry);
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appendListItem(ul, li);
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}
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while ( ul.parentNode !== null ) {
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ul = ul.parentNode;
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}
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dom.cl.add(ul.firstElementChild, 'show');
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domTreeParent.appendChild(domTree);
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};
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/******************************************************************************/
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const patchIncremental = (from, delta) => {
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let li = from.parentElement.parentElement;
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const patchCosmeticHide = delta >= 0 &&
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dom.cl.has(from, 'isCosmeticHide') &&
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dom.cl.has(li, 'hasCosmeticHide') === false;
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// Include descendants count when removing a node
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if ( delta < 0 ) {
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delta -= countFromNode(from);
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}
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for ( ; li.localName === 'li'; li = li.parentElement.parentElement ) {
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const span = li.children[2];
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if ( delta !== 0 ) {
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const cnt = countFromNode(li) + delta;
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span.textContent = cnt !== 0 ? cnt.toLocaleString() : '';
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dom.attr(span, 'data-cnt', cnt);
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}
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if ( patchCosmeticHide ) {
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dom.cl.add(li, 'hasCosmeticHide');
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}
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}
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};
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/******************************************************************************/
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const renderDOMIncremental = response => {
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// Process each journal entry:
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// 1 = node added
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// -1 = node removed
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const nodes = new Map(response.nodes);
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let li = null;
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let ul = null;
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for ( const entry of response.journal ) {
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// Remove node
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if ( entry.what === -1 ) {
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li = qs$(`#${entry.nid}`);
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if ( li === null ) { continue; }
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patchIncremental(li, -1);
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li.parentNode.removeChild(li);
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continue;
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}
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// Modify node
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if ( entry.what === 0 ) {
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// TODO: update selector/filter
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continue;
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}
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// Add node as sibling
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if ( entry.what === 1 && entry.l ) {
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const previous = qs$(`#${entry.l}`);
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// This should not happen
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if ( previous === null ) {
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// throw new Error('No left sibling!?');
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continue;
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}
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ul = previous.parentElement;
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li = nodeFromDomEntry(nodes.get(entry.nid));
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ul.insertBefore(li, previous.nextElementSibling);
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patchIncremental(li, 1);
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continue;
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}
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// Add node as child
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if ( entry.what === 1 && entry.u ) {
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li = qs$(`#${entry.u}`);
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// This should not happen
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if ( li === null ) {
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// throw new Error('No parent!?');
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continue;
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}
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ul = qs$(li, 'ul');
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if ( ul === null ) {
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ul = document.createElement('ul');
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li.appendChild(ul);
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dom.cl.add(li, 'branch');
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}
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li = nodeFromDomEntry(nodes.get(entry.nid));
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ul.appendChild(li);
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patchIncremental(li, 1);
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continue;
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}
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}
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};
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/******************************************************************************/
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const countFromNode = li => {
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const span = li.children[2];
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const cnt = parseInt(dom.attr(span, 'data-cnt'), 10);
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return isNaN(cnt) ? 0 : cnt;
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};
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/******************************************************************************/
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const selectorFromNode = node => {
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let selector = '';
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while ( node !== null ) {
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if ( node.localName === 'li' ) {
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const code = qs$(node, 'code');
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if ( code !== null ) {
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selector = `${code.textContent} > ${selector}`;
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if ( selector.includes('#') ) { break; }
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}
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}
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node = node.parentElement;
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}
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return selector.slice(0, -3);
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};
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/******************************************************************************/
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const selectorFromFilter = node => {
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while ( node !== null ) {
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if ( node.localName === 'li' ) {
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const code = qs$(node, 'code:nth-of-type(2)');
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if ( code !== null ) {
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return code.textContent;
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}
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}
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node = node.parentElement;
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}
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return '';
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};
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/******************************************************************************/
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const nidFromNode = node => {
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let li = node;
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while ( li !== null ) {
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if ( li.localName === 'li' ) {
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return li.id || '';
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}
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li = li.parentElement;
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}
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return '';
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};
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/******************************************************************************/
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const startDialog = (( ) => {
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let dialog;
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let textarea;
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let hideSelectors = [];
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let unhideSelectors = [];
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const parse = function() {
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hideSelectors = [];
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unhideSelectors = [];
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const re = /^([^#]*)(#@?#)(.+)$/;
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for ( let line of textarea.value.split(/\s*\n\s*/) ) {
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line = line.trim();
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if ( line === '' || line.charAt(0) === '!' ) { continue; }
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const matches = re.exec(line);
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if ( matches === null || matches.length !== 4 ) { continue; }
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if ( inspectedHostname.lastIndexOf(matches[1]) === -1 ) {
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continue;
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}
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if ( matches[2] === '##' ) {
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hideSelectors.push(matches[3]);
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} else {
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unhideSelectors.push(matches[3]);
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}
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}
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showCommitted();
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};
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const inputTimer = vAPI.defer.create(parse);
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const onInputChanged = ( ) => {
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inputTimer.on(743);
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};
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const onClicked = function(ev) {
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const target = ev.target;
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ev.stopPropagation();
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if ( target.id === 'createCosmeticFilters' ) {
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vAPI.messaging.send('loggerUI', {
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what: 'createUserFilter',
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filters: textarea.value,
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});
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// Force a reload for the new cosmetic filter(s) to take effect
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vAPI.messaging.send('loggerUI', {
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what: 'reloadTab',
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tabId: inspectedTabId,
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});
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return stop();
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}
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};
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const showCommitted = function() {
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contentInspectorChannel.send({
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what: 'showCommitted',
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hide: hideSelectors.join(',\n'),
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unhide: unhideSelectors.join(',\n')
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});
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};
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const showInteractive = function() {
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contentInspectorChannel.send({
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what: 'showInteractive',
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hide: hideSelectors.join(',\n'),
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unhide: unhideSelectors.join(',\n')
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});
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};
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const start = function() {
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dialog = logger.modalDialog.create('#cosmeticFilteringDialog', stop);
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textarea = qs$(dialog, 'textarea');
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hideSelectors = [];
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for ( const node of qsa$(domTree, 'code.off') ) {
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if ( dom.cl.has(node, 'filter') ) { continue; }
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hideSelectors.push(selectorFromNode(node));
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}
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const taValue = [];
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for ( const selector of hideSelectors ) {
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taValue.push(inspectedHostname + '##' + selector);
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}
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const ids = new Set();
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for ( const node of qsa$(domTree, 'code.filter.off') ) {
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const id = dom.attr(node, 'data-filter-id');
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if ( ids.has(id) ) { continue; }
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ids.add(id);
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unhideSelectors.push(node.textContent);
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taValue.push(inspectedHostname + '#@#' + node.textContent);
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}
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textarea.value = taValue.join('\n');
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textarea.addEventListener('input', onInputChanged);
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dialog.addEventListener('click', onClicked, true);
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showCommitted();
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logger.modalDialog.show();
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};
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const stop = function() {
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inputTimer.off();
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showInteractive();
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textarea.removeEventListener('input', onInputChanged);
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dialog.removeEventListener('click', onClicked, true);
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dialog = undefined;
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textarea = undefined;
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hideSelectors = [];
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unhideSelectors = [];
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};
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return start;
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})();
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/******************************************************************************/
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const onClicked = ev => {
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ev.stopPropagation();
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if ( inspectedTabId === 0 ) { return; }
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const target = ev.target;
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const parent = target.parentElement;
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// Expand/collapse branch
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if (
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target.localName === 'span' &&
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parent instanceof HTMLLIElement &&
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dom.cl.has(parent, 'branch') &&
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target === parent.firstElementChild
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) {
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const state = dom.cl.toggle(parent, 'show');
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if ( !state ) {
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for ( const node of qsa$(parent, '.branch') ) {
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dom.cl.remove(node, 'show');
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}
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}
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return;
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}
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// Not a node or filter
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if ( target.localName !== 'code' ) { return; }
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// Toggle cosmetic filter
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if ( dom.cl.has(target, 'filter') ) {
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contentInspectorChannel.send({
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what: 'toggleFilter',
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original: false,
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target: dom.cl.toggle(target, 'off'),
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selector: selectorFromNode(target),
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filter: selectorFromFilter(target),
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nid: nidFromNode(target)
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});
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dom.cl.toggle(
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qsa$(inspector, `[data-filter-id="${dom.attr(target, 'data-filter-id')}"]`),
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'off',
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dom.cl.has(target, 'off')
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);
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}
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// Toggle node
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else {
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contentInspectorChannel.send({
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what: 'toggleNodes',
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original: true,
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target: dom.cl.toggle(target, 'off') === false,
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selector: selectorFromNode(target),
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nid: nidFromNode(target)
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});
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}
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const cantCreate = qs$(domTree, '.off') === null;
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dom.cl.toggle(qs$(inspector, '.permatoolbar .revert'), 'disabled', cantCreate);
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dom.cl.toggle(qs$(inspector, '.permatoolbar .commit'), 'disabled', cantCreate);
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};
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/******************************************************************************/
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const onMouseOver = (( ) => {
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let mouseoverTarget = null;
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const mouseoverTimer = vAPI.defer.create(( ) => {
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contentInspectorChannel.send({
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what: 'highlightOne',
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selector: selectorFromNode(mouseoverTarget),
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nid: nidFromNode(mouseoverTarget),
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scrollTo: true
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});
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});
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return ev => {
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if ( inspectedTabId === 0 ) { return; }
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// Convenience: skip real-time highlighting if shift key is pressed.
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if ( ev.shiftKey ) { return; }
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// Find closest `li`
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const target = ev.target.closest('li');
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if ( target === mouseoverTarget ) { return; }
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mouseoverTarget = target;
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mouseoverTimer.on(50);
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};
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})();
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/******************************************************************************/
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const currentTabId = ( ) => {
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if ( dom.cl.has(showdomButton, 'active') === false ) { return 0; }
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return logger.tabIdFromPageSelector();
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const injectInspector = (( ) => {
|
|
const timer = vAPI.defer.create(( ) => {
|
|
const tabId = currentTabId();
|
|
if ( tabId <= 0 ) { return; }
|
|
inspectedTabId = tabId;
|
|
vAPI.messaging.send('loggerUI', {
|
|
what: 'scriptlet',
|
|
tabId,
|
|
scriptlet: 'dom-inspector',
|
|
});
|
|
});
|
|
return ( ) => {
|
|
shutdownInspector();
|
|
timer.offon(353);
|
|
};
|
|
})();
|
|
|
|
/******************************************************************************/
|
|
|
|
const shutdownInspector = ( ) => {
|
|
contentInspectorChannel.disconnect();
|
|
logger.removeAllChildren(domTree);
|
|
dom.cl.remove(inspector, 'vExpanded');
|
|
inspectedTabId = 0;
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const onTabIdChanged = ( ) => {
|
|
const tabId = currentTabId();
|
|
if ( tabId <= 0 ) {
|
|
return toggleOff();
|
|
}
|
|
if ( inspectedTabId !== tabId ) {
|
|
injectInspector();
|
|
}
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const toggleVExpandView = ( ) => {
|
|
const branches = qsa$('#domTree li.branch.show > ul > li.branch:not(.show)');
|
|
for ( const branch of branches ) {
|
|
dom.cl.add(branch, 'show');
|
|
}
|
|
};
|
|
|
|
const toggleVCompactView = ( ) => {
|
|
const branches = qsa$('#domTree li.branch.show > ul > li:not(.show)');
|
|
const tohideSet = new Set();
|
|
for ( const branch of branches ) {
|
|
const node = branch.closest('li.branch.show');
|
|
if ( node.id === 'n1' ) { continue; }
|
|
tohideSet.add(node);
|
|
}
|
|
const tohideList = Array.from(tohideSet);
|
|
let i = tohideList.length - 1;
|
|
while ( i > 0 ) {
|
|
if ( tohideList[i-1].contains(tohideList[i]) ) {
|
|
tohideList.splice(i-1, 1);
|
|
} else if ( tohideList[i].contains(tohideList[i-1]) ) {
|
|
tohideList.splice(i, 1);
|
|
}
|
|
i -= 1;
|
|
}
|
|
for ( const node of tohideList ) {
|
|
dom.cl.remove(node, 'show');
|
|
}
|
|
};
|
|
|
|
const toggleHCompactView = ( ) => {
|
|
dom.cl.toggle(inspector, 'hCompact');
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const revert = ( ) => {
|
|
dom.cl.remove('#domTree .off', 'off');
|
|
contentInspectorChannel.send({ what: 'resetToggledNodes' });
|
|
dom.cl.add(qs$(inspector, '.permatoolbar .revert'), 'disabled');
|
|
dom.cl.add(qs$(inspector, '.permatoolbar .commit'), 'disabled');
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const toggleOn = ( ) => {
|
|
dom.cl.add('#inspectors', 'dom');
|
|
window.addEventListener('beforeunload', toggleOff);
|
|
dom.on(document, 'tabIdChanged', onTabIdChanged);
|
|
dom.on(domTree, 'click', onClicked, true);
|
|
dom.on(domTree, 'mouseover', onMouseOver, true);
|
|
dom.on('#domInspector .vExpandToggler', 'click', toggleVExpandView);
|
|
dom.on('#domInspector .vCompactToggler', 'click', toggleVCompactView);
|
|
dom.on('#domInspector .hCompactToggler', 'click', toggleHCompactView);
|
|
dom.on('#domInspector .permatoolbar .revert', 'click', revert);
|
|
dom.on('#domInspector .permatoolbar .commit', 'click', startDialog);
|
|
contentInspectorChannel.start();
|
|
injectInspector();
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const toggleOff = ( ) => {
|
|
dom.cl.remove(showdomButton, 'active');
|
|
dom.cl.remove('#inspectors', 'dom');
|
|
shutdownInspector();
|
|
window.removeEventListener('beforeunload', toggleOff);
|
|
dom.off(document, 'tabIdChanged', onTabIdChanged);
|
|
dom.off(domTree, 'click', onClicked, true);
|
|
dom.off(domTree, 'mouseover', onMouseOver, true);
|
|
dom.off('#domInspector .vExpandToggler', 'click', toggleVExpandView);
|
|
dom.off('#domInspector .vCompactToggler', 'click', toggleVCompactView);
|
|
dom.off('#domInspector .hCompactToggler', 'click', toggleHCompactView);
|
|
dom.off('#domInspector .permatoolbar .revert', 'click', revert);
|
|
dom.off('#domInspector .permatoolbar .commit', 'click', startDialog);
|
|
contentInspectorChannel.shutdown();
|
|
inspectedTabId = 0;
|
|
};
|
|
|
|
/******************************************************************************/
|
|
|
|
const toggle = ( ) => {
|
|
if ( dom.cl.toggle(showdomButton, 'active') ) {
|
|
toggleOn();
|
|
} else {
|
|
toggleOff();
|
|
}
|
|
};
|
|
|
|
dom.on(showdomButton, 'click', toggle);
|
|
|
|
/******************************************************************************/
|
|
|
|
})();
|