mirror of https://github.com/gorhill/uBlock.git
733 lines
23 KiB
JavaScript
733 lines
23 KiB
JavaScript
/*******************************************************************************
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µBlock - a browser extension to block requests.
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Copyright (C) 2014 The µBlock authors
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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 self, µBlock */
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// For background page
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/******************************************************************************/
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(function() {
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'use strict';
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/******************************************************************************/
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var vAPI = self.vAPI = self.vAPI || {};
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var chrome = self.chrome;
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var manifest = chrome.runtime.getManifest();
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vAPI.chrome = true;
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var noopFunc = function(){};
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/******************************************************************************/
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vAPI.app = {
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name: manifest.name,
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version: manifest.version
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};
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/******************************************************************************/
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vAPI.app.restart = function() {
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chrome.runtime.reload();
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};
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/******************************************************************************/
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// chrome.storage.local.get(null, function(bin){ console.debug('%o', bin); });
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vAPI.storage = chrome.storage.local;
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/******************************************************************************/
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vAPI.tabs = {};
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/******************************************************************************/
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vAPI.isNoTabId = function(tabId) {
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return tabId.toString() === '-1';
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};
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vAPI.noTabId = '-1';
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/******************************************************************************/
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vAPI.tabs.registerListeners = function() {
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var onNavigationClient = this.onNavigation || noopFunc;
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var onPopupClient = this.onPopup || noopFunc;
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var onUpdatedClient = this.onUpdated || noopFunc;
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// https://developer.chrome.com/extensions/webNavigation
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// [onCreatedNavigationTarget ->]
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// onBeforeNavigate ->
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// onCommitted ->
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// onDOMContentLoaded ->
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// onCompleted
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var popupCandidates = Object.create(null);
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var PopupCandidate = function(details) {
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this.targetTabId = details.tabId;
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this.openerTabId = details.sourceTabId;
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this.targetURL = details.url;
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this.selfDestructionTimer = null;
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};
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PopupCandidate.prototype.selfDestruct = function() {
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if ( this.selfDestructionTimer !== null ) {
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clearTimeout(this.selfDestructionTimer);
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}
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delete popupCandidates[this.targetTabId];
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};
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PopupCandidate.prototype.launchSelfDestruction = function() {
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if ( this.selfDestructionTimer !== null ) {
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clearTimeout(this.selfDestructionTimer);
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}
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this.selfDestructionTimer = setTimeout(this.selfDestruct.bind(this), 10000);
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};
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var popupCandidateCreate = function(details) {
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var popup = popupCandidates[details.tabId];
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// This really should not happen...
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if ( popup !== undefined ) {
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return;
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}
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return popupCandidates[details.tabId] = new PopupCandidate(details);
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};
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var popupCandidateTest = function(details) {
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var popup = popupCandidates[details.tabId];
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if ( popup === undefined ) {
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return;
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}
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popup.targetURL = details.url;
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if ( onPopupClient(popup) !== true ) {
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return;
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}
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popup.selfDestruct();
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return true;
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};
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var popupCandidateDestroy = function(details) {
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var popup = popupCandidates[details.tabId];
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if ( popup instanceof PopupCandidate ) {
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popup.launchSelfDestruction();
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}
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};
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// The chrome.webRequest.onBeforeRequest() won't be called for everything
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// else than `http`/`https`. Thus, in such case, we will bind the tab as
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// early as possible in order to increase the likelihood of a context
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// properly setup if network requests are fired from within the tab.
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// Example: Chromium + case #6 at
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// http://raymondhill.net/ublock/popup.html
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var reGoodForWebRequestAPI = /^https?:\/\//;
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var onCreatedNavigationTarget = function(details) {
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//console.debug('onCreatedNavigationTarget: popup candidate tab id %d = "%s"', details.tabId, details.url);
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if ( reGoodForWebRequestAPI.test(details.url) === false ) {
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details.frameId = 0;
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onNavigationClient(details);
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}
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popupCandidateCreate(details);
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popupCandidateTest(details);
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};
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var onBeforeNavigate = function(details) {
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if ( details.frameId !== 0 ) {
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return;
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}
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//console.debug('onBeforeNavigate: popup candidate tab id %d = "%s"', details.tabId, details.url);
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popupCandidateTest(details);
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};
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var onUpdated = function(tabId, changeInfo, tab) {
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if ( changeInfo.url && popupCandidateTest({ tabId: tabId, url: changeInfo.url }) ) {
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return;
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}
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onUpdatedClient(tabId, changeInfo, tab);
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};
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var onCommitted = function(details) {
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if ( details.frameId !== 0 ) {
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return;
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}
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onNavigationClient(details);
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//console.debug('onCommitted: popup candidate tab id %d = "%s"', details.tabId, details.url);
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if ( popupCandidateTest(details) === true ) {
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return;
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}
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popupCandidateDestroy(details);
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};
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chrome.webNavigation.onCreatedNavigationTarget.addListener(onCreatedNavigationTarget);
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chrome.webNavigation.onBeforeNavigate.addListener(onBeforeNavigate);
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chrome.webNavigation.onCommitted.addListener(onCommitted);
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chrome.tabs.onUpdated.addListener(onUpdated);
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if ( typeof this.onClosed === 'function' ) {
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chrome.tabs.onRemoved.addListener(this.onClosed);
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}
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};
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/******************************************************************************/
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vAPI.tabs.get = function(tabId, callback) {
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var onTabReady = function(tab) {
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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if ( chrome.runtime.lastError ) {
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/* noop */
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}
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// Caller must be prepared to deal with nil tab value
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callback(tab);
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};
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if ( tabId !== null ) {
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if ( typeof tabId === 'string' ) {
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tabId = parseInt(tabId, 10);
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}
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chrome.tabs.get(tabId, onTabReady);
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return;
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}
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var onTabReceived = function(tabs) {
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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if ( chrome.runtime.lastError ) {
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/* noop */
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}
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callback(tabs[0]);
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};
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chrome.tabs.query({ active: true, currentWindow: true }, onTabReceived);
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};
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/******************************************************************************/
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// properties of the details object:
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// url: 'URL', // the address that will be opened
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// tabId: 1, // the tab is used if set, instead of creating a new one
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// index: -1, // undefined: end of the list, -1: following tab, or after index
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// active: false, // opens the tab in background - true and undefined: foreground
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// select: true // if a tab is already opened with that url, then select it instead of opening a new one
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vAPI.tabs.open = function(details) {
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var targetURL = details.url;
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if ( typeof targetURL !== 'string' || targetURL === '' ) {
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return null;
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}
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// extension pages
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if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
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targetURL = vAPI.getURL(targetURL);
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}
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// dealing with Chrome's asynchronous API
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var wrapper = function() {
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if ( details.active === undefined ) {
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details.active = true;
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}
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var subWrapper = function() {
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var _details = {
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url: targetURL,
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active: !!details.active
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};
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// Opening a tab from incognito window won't focus the window
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// in which the tab was opened
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var focusWindow = function(tab) {
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if ( tab.active ) {
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chrome.windows.update(tab.windowId, { focused: true });
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}
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};
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if ( !details.tabId ) {
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if ( details.index !== undefined ) {
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_details.index = details.index;
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}
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chrome.tabs.create(_details, focusWindow);
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return;
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}
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// update doesn't accept index, must use move
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chrome.tabs.update(parseInt(details.tabId, 10), _details, function(tab) {
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// if the tab doesn't exist
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if ( vAPI.lastError() ) {
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chrome.tabs.create(_details, focusWindow);
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} else if ( details.index !== undefined ) {
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chrome.tabs.move(tab.id, {index: details.index});
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}
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});
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};
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if ( details.index !== -1 ) {
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subWrapper();
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return;
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}
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vAPI.tabs.get(null, function(tab) {
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if ( tab ) {
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details.index = tab.index + 1;
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} else {
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delete details.index;
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}
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subWrapper();
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});
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};
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if ( !details.select ) {
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wrapper();
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return;
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}
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chrome.tabs.query({ url: targetURL }, function(tabs) {
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var tab = tabs[0];
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if ( tab ) {
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chrome.tabs.update(tab.id, { active: true }, function(tab) {
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chrome.windows.update(tab.windowId, { focused: true });
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});
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} else {
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wrapper();
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}
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});
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};
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/******************************************************************************/
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// Replace the URL of a tab. Noop if the tab does not exist.
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vAPI.tabs.replace = function(tabId, url) {
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var targetURL = url;
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// extension pages
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if ( /^[\w-]{2,}:/.test(targetURL) !== true ) {
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targetURL = vAPI.getURL(targetURL);
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}
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if ( typeof tabId !== 'number' ) {
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tabId = parseInt(tabId, 10);
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if ( isNaN(tabId) ) {
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return;
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}
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}
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chrome.tabs.update(tabId, { url: targetURL }, function() {
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// this prevent console error
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if ( chrome.runtime.lastError ) {
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return;
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}
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});
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};
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/******************************************************************************/
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vAPI.tabs.remove = function(tabId) {
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var onTabRemoved = function() {
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if ( vAPI.lastError() ) {
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}
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};
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chrome.tabs.remove(parseInt(tabId, 10), onTabRemoved);
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};
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/******************************************************************************/
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vAPI.tabs.reload = function(tabId /*, flags*/) {
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if ( typeof tabId === 'string' ) {
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tabId = parseInt(tabId, 10);
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}
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chrome.tabs.reload(tabId);
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};
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/******************************************************************************/
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vAPI.tabs.injectScript = function(tabId, details, callback) {
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var onScriptExecuted = function() {
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// https://code.google.com/p/chromium/issues/detail?id=410868#c8
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if ( chrome.runtime.lastError ) {
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}
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if ( typeof callback === 'function' ) {
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callback();
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}
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};
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if ( tabId ) {
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tabId = parseInt(tabId, 10);
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chrome.tabs.executeScript(tabId, details, onScriptExecuted);
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} else {
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chrome.tabs.executeScript(details, onScriptExecuted);
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}
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};
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/******************************************************************************/
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// Must read: https://code.google.com/p/chromium/issues/detail?id=410868#c8
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// https://github.com/gorhill/uBlock/issues/19
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// https://github.com/gorhill/uBlock/issues/207
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// Since we may be called asynchronously, the tab id may not exist
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// anymore, so this ensures it does still exist.
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vAPI.setIcon = function(tabId, iconStatus, badge) {
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tabId = parseInt(tabId, 10);
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var onIconReady = function() {
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if ( vAPI.lastError() ) {
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return;
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}
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chrome.browserAction.setBadgeText({ tabId: tabId, text: badge });
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if ( badge !== '' ) {
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chrome.browserAction.setBadgeBackgroundColor({
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tabId: tabId,
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color: '#666'
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});
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}
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};
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var iconPaths = iconStatus === 'on' ?
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{ '19': 'img/browsericons/icon19.png', '38': 'img/browsericons/icon38.png' } :
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{ '19': 'img/browsericons/icon19-off.png', '38': 'img/browsericons/icon38-off.png' };
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chrome.browserAction.setIcon({ tabId: tabId, path: iconPaths }, onIconReady);
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};
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/******************************************************************************/
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vAPI.messaging = {
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ports: {},
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listeners: {},
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defaultHandler: null,
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NOOPFUNC: noopFunc,
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UNHANDLED: 'vAPI.messaging.notHandled'
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};
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/******************************************************************************/
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vAPI.messaging.listen = function(listenerName, callback) {
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this.listeners[listenerName] = callback;
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};
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/******************************************************************************/
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vAPI.messaging.onPortMessage = function(request, port) {
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var callback = vAPI.messaging.NOOPFUNC;
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if ( request.requestId !== undefined ) {
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callback = CallbackWrapper.factory(port, request).callback;
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}
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// Specific handler
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var r = vAPI.messaging.UNHANDLED;
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var listener = vAPI.messaging.listeners[request.channelName];
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if ( typeof listener === 'function' ) {
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r = listener(request.msg, port.sender, callback);
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}
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if ( r !== vAPI.messaging.UNHANDLED ) {
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return;
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}
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// Default handler
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r = vAPI.messaging.defaultHandler(request.msg, port.sender, callback);
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if ( r !== vAPI.messaging.UNHANDLED ) {
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return;
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}
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console.error('µBlock> messaging > unknown request: %o', request);
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// Unhandled:
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// Need to callback anyways in case caller expected an answer, or
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// else there is a memory leak on caller's side
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callback();
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};
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/******************************************************************************/
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vAPI.messaging.onPortDisconnect = function(port) {
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port.onDisconnect.removeListener(vAPI.messaging.onPortDisconnect);
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port.onMessage.removeListener(vAPI.messaging.onPortMessage);
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delete vAPI.messaging.ports[port.name];
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};
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/******************************************************************************/
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vAPI.messaging.onPortConnect = function(port) {
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port.onDisconnect.addListener(vAPI.messaging.onPortDisconnect);
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port.onMessage.addListener(vAPI.messaging.onPortMessage);
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vAPI.messaging.ports[port.name] = port;
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};
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/******************************************************************************/
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vAPI.messaging.setup = function(defaultHandler) {
|
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// Already setup?
|
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if ( this.defaultHandler !== null ) {
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return;
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}
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|
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if ( typeof defaultHandler !== 'function' ) {
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defaultHandler = function(){ return vAPI.messaging.UNHANDLED; };
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}
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this.defaultHandler = defaultHandler;
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chrome.runtime.onConnect.addListener(this.onPortConnect);
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};
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/******************************************************************************/
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|
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vAPI.messaging.broadcast = function(message) {
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var messageWrapper = {
|
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broadcast: true,
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msg: message
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};
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|
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for ( var portName in this.ports ) {
|
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if ( this.ports.hasOwnProperty(portName) === false ) {
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continue;
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}
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this.ports[portName].postMessage(messageWrapper);
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}
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};
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|
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/******************************************************************************/
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// This allows to avoid creating a closure for every single message which
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// expects an answer. Having a closure created each time a message is processed
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// has been always bothering me. Another benefit of the implementation here
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// is to reuse the callback proxy object, so less memory churning.
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//
|
|
// https://developers.google.com/speed/articles/optimizing-javascript
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|
// "Creating a closure is significantly slower then creating an inner
|
|
// function without a closure, and much slower than reusing a static
|
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// function"
|
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//
|
|
// http://hacksoflife.blogspot.ca/2015/01/the-four-horsemen-of-performance.html
|
|
// "the dreaded 'uniformly slow code' case where every function takes 1%
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|
// of CPU and you have to make one hundred separate performance optimizations
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|
// to improve performance at all"
|
|
//
|
|
// http://jsperf.com/closure-no-closure/2
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|
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var CallbackWrapper = function(port, request) {
|
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// No need to bind every single time
|
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this.callback = this.proxy.bind(this);
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this.messaging = vAPI.messaging;
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this.init(port, request);
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};
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|
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CallbackWrapper.junkyard = [];
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|
|
CallbackWrapper.factory = function(port, request) {
|
|
var wrapper = CallbackWrapper.junkyard.pop();
|
|
if ( wrapper ) {
|
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wrapper.init(port, request);
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return wrapper;
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}
|
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return new CallbackWrapper(port, request);
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};
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|
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CallbackWrapper.prototype.init = function(port, request) {
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this.port = port;
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this.request = request;
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};
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|
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CallbackWrapper.prototype.proxy = function(response) {
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// https://github.com/gorhill/uBlock/issues/383
|
|
if ( this.messaging.ports.hasOwnProperty(this.port.name) ) {
|
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this.port.postMessage({
|
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requestId: this.request.requestId,
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channelName: this.request.channelName,
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msg: response !== undefined ? response : null
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});
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}
|
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// Mark for reuse
|
|
this.port = this.request = null;
|
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CallbackWrapper.junkyard.push(this);
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};
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/******************************************************************************/
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vAPI.net = {};
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/******************************************************************************/
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vAPI.net.registerListeners = function() {
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var µb = µBlock;
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var µburi = µb.URI;
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var normalizeRequestDetails = function(details) {
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µburi.set(details.url);
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details.tabId = details.tabId.toString();
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details.hostname = µburi.hostnameFromURI(details.url);
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// The rest of the function code is to normalize type
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if ( details.type !== 'other' ) {
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return;
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}
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var tail = µburi.path.slice(-6);
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var pos = tail.lastIndexOf('.');
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// https://github.com/gorhill/uBlock/issues/862
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// If no transposition possible, transpose to `object` as per
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// Chromium bug 410382 (see below)
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if ( pos === -1 ) {
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details.type = 'object';
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return;
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}
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var ext = tail.slice(pos) + '.';
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if ( '.eot.ttf.otf.svg.woff.woff2.'.indexOf(ext) !== -1 ) {
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details.type = 'font';
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return;
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}
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// Still need this because often behind-the-scene requests are wrongly
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// categorized as 'other'
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if ( '.ico.png.gif.jpg.jpeg.webp.'.indexOf(ext) !== -1 ) {
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details.type = 'image';
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return;
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}
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// https://code.google.com/p/chromium/issues/detail?id=410382
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details.type = 'object';
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};
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var onBeforeRequestClient = this.onBeforeRequest.callback;
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var onBeforeRequest = function(details) {
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normalizeRequestDetails(details);
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return onBeforeRequestClient(details);
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};
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chrome.webRequest.onBeforeRequest.addListener(
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onBeforeRequest,
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//function(details) {
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// quickProfiler.start('onBeforeRequest');
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// var r = onBeforeRequest(details);
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// quickProfiler.stop();
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// return r;
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//},
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{
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'urls': this.onBeforeRequest.urls || ['<all_urls>'],
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'types': this.onBeforeRequest.types || []
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},
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this.onBeforeRequest.extra
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);
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var onHeadersReceivedClient = this.onHeadersReceived.callback;
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var onHeadersReceived = function(details) {
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normalizeRequestDetails(details);
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return onHeadersReceivedClient(details);
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};
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chrome.webRequest.onHeadersReceived.addListener(
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onHeadersReceived,
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{
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'urls': this.onHeadersReceived.urls || ['<all_urls>'],
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'types': this.onHeadersReceived.types || []
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},
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this.onHeadersReceived.extra
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);
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};
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/******************************************************************************/
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vAPI.contextMenu = {
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create: function(details, callback) {
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this.menuId = details.id;
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this.callback = callback;
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chrome.contextMenus.create(details);
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chrome.contextMenus.onClicked.addListener(this.callback);
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},
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remove: function() {
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chrome.contextMenus.onClicked.removeListener(this.callback);
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chrome.contextMenus.remove(this.menuId);
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}
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};
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/******************************************************************************/
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vAPI.lastError = function() {
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return chrome.runtime.lastError;
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};
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/******************************************************************************/
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// This is called only once, when everything has been loaded in memory after
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// the extension was launched. It can be used to inject content scripts
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// in already opened web pages, to remove whatever nuisance could make it to
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// the web pages before uBlock was ready.
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vAPI.onLoadAllCompleted = function() {
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// http://code.google.com/p/chromium/issues/detail?id=410868#c11
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// Need to be sure to access `vAPI.lastError()` to prevent
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// spurious warnings in the console.
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var scriptDone = function() {
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vAPI.lastError();
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};
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var scriptEnd = function(tabId) {
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if ( vAPI.lastError() ) {
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return;
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}
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vAPI.tabs.injectScript(tabId, {
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file: 'js/contentscript-end.js',
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allFrames: true,
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runAt: 'document_idle'
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}, scriptDone);
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};
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var scriptStart = function(tabId) {
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vAPI.tabs.injectScript(tabId, {
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file: 'js/vapi-client.js',
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allFrames: true,
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runAt: 'document_start'
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}, function(){ });
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vAPI.tabs.injectScript(tabId, {
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file: 'js/contentscript-start.js',
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allFrames: true,
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runAt: 'document_start'
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}, function(){ scriptEnd(tabId); });
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};
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var bindToTabs = function(tabs) {
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var µb = µBlock;
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var i = tabs.length, tab;
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while ( i-- ) {
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tab = tabs[i];
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µb.bindTabToPageStats(tab.id, tab.url);
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// https://github.com/gorhill/uBlock/issues/129
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scriptStart(tab.id);
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}
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};
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chrome.tabs.query({ url: 'http://*/*' }, bindToTabs);
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chrome.tabs.query({ url: 'https://*/*' }, bindToTabs);
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};
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/******************************************************************************/
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vAPI.punycodeHostname = function(hostname) {
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return hostname;
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};
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vAPI.punycodeURL = function(url) {
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return url;
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};
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/******************************************************************************/
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})();
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/******************************************************************************/
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