forked from mirrors/gecko-dev
ab529e5e79
MozReview-Commit-ID: Cado1fxLYxr --HG-- extra : rebase_source : 263d0ef1bc2f38866571d2bb6d555b8dcc9dca38
787 lines
27 KiB
JavaScript
787 lines
27 KiB
JavaScript
/* -*- Mode: indent-tabs-mode: nil; js-indent-level: 2 -*- */
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/* vim: set sts=2 sw=2 et tw=80: */
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"use strict";
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XPCOMUtils.defineLazyServiceGetter(this, "aboutNewTabService",
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"@mozilla.org/browser/aboutnewtab-service;1",
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"nsIAboutNewTabService");
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XPCOMUtils.defineLazyModuleGetter(this, "MatchPattern",
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"resource://gre/modules/MatchPattern.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "PrivateBrowsingUtils",
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"resource://gre/modules/PrivateBrowsingUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "PromiseUtils",
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"resource://gre/modules/PromiseUtils.jsm");
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XPCOMUtils.defineLazyModuleGetter(this, "Services",
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"resource://gre/modules/Services.jsm");
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Cu.import("resource://gre/modules/ExtensionUtils.jsm");
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var {
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SingletonEventManager,
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} = ExtensionUtils;
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// This function is pretty tightly tied to Extension.jsm.
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// Its job is to fill in the |tab| property of the sender.
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function getSender(extension, target, sender) {
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let tabId;
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if ("tabId" in sender) {
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// The message came from a privileged extension page running in a tab. In
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// that case, it should include a tabId property (which is filled in by the
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// page-open listener below).
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tabId = sender.tabId;
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delete sender.tabId;
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} else if (target instanceof Ci.nsIDOMXULElement) {
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tabId = tabTracker.getBrowserData(target).tabId;
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}
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if (tabId) {
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let tab = extension.tabManager.get(tabId, null);
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if (tab) {
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sender.tab = tab.convert();
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}
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}
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}
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// Used by Extension.jsm
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global.tabGetSender = getSender;
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/* eslint-disable mozilla/balanced-listeners */
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extensions.on("page-shutdown", (type, context) => {
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if (context.viewType == "tab") {
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if (context.extension.id !== context.xulBrowser.contentPrincipal.addonId) {
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// Only close extension tabs.
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// This check prevents about:addons from closing when it contains a
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// WebExtension as an embedded inline options page.
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return;
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}
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let {gBrowser} = context.xulBrowser.ownerGlobal;
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if (gBrowser) {
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let nativeTab = gBrowser.getTabForBrowser(context.xulBrowser);
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if (nativeTab) {
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gBrowser.removeTab(nativeTab);
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}
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}
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}
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});
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/* eslint-enable mozilla/balanced-listeners */
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let tabListener = {
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tabReadyInitialized: false,
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tabReadyPromises: new WeakMap(),
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initializingTabs: new WeakSet(),
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initTabReady() {
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if (!this.tabReadyInitialized) {
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windowTracker.addListener("progress", this);
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this.tabReadyInitialized = true;
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}
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},
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onLocationChange(browser, webProgress, request, locationURI, flags) {
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if (webProgress.isTopLevel) {
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let {gBrowser} = browser.ownerGlobal;
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let nativeTab = gBrowser.getTabForBrowser(browser);
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// Now we are certain that the first page in the tab was loaded.
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this.initializingTabs.delete(nativeTab);
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// browser.innerWindowID is now set, resolve the promises if any.
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let deferred = this.tabReadyPromises.get(nativeTab);
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if (deferred) {
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deferred.resolve(nativeTab);
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this.tabReadyPromises.delete(nativeTab);
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}
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}
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},
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/**
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* Returns a promise that resolves when the tab is ready.
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* Tabs created via the `tabs.create` method are "ready" once the location
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* changes to the requested URL. Other tabs are assumed to be ready once their
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* inner window ID is known.
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*
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* @param {XULElement} nativeTab The <tab> element.
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* @returns {Promise} Resolves with the given tab once ready.
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*/
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awaitTabReady(nativeTab) {
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let deferred = this.tabReadyPromises.get(nativeTab);
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if (!deferred) {
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deferred = PromiseUtils.defer();
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if (!this.initializingTabs.has(nativeTab) &&
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(nativeTab.linkedBrowser.innerWindowID ||
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nativeTab.linkedBrowser.currentURI.spec === "about:blank")) {
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deferred.resolve(nativeTab);
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} else {
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this.initTabReady();
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this.tabReadyPromises.set(nativeTab, deferred);
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}
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}
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return deferred.promise;
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},
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};
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extensions.registerSchemaAPI("tabs", "addon_parent", context => {
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let {extension} = context;
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let {tabManager} = extension;
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function getTabOrActive(tabId) {
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if (tabId !== null) {
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return tabTracker.getTab(tabId);
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}
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return tabTracker.activeTab;
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}
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async function promiseTabWhenReady(tabId) {
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let tab;
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if (tabId !== null) {
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tab = tabManager.get(tabId);
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} else {
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tab = tabManager.getWrapper(tabTracker.activeTab);
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}
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await tabListener.awaitTabReady(tab.nativeTab);
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return tab;
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}
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let self = {
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tabs: {
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onActivated: new WindowEventManager(context, "tabs.onActivated", "TabSelect", (fire, event) => {
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let nativeTab = event.originalTarget;
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let tabId = tabTracker.getId(nativeTab);
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let windowId = windowTracker.getId(nativeTab.ownerGlobal);
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fire.async({tabId, windowId});
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}).api(),
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onCreated: new SingletonEventManager(context, "tabs.onCreated", fire => {
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let listener = (eventName, event) => {
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fire.async(tabManager.convert(event.nativeTab));
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};
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tabTracker.on("tab-created", listener);
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return () => {
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tabTracker.off("tab-created", listener);
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};
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}).api(),
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/**
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* Since multiple tabs currently can't be highlighted, onHighlighted
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* essentially acts an alias for self.tabs.onActivated but returns
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* the tabId in an array to match the API.
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* @see https://developer.mozilla.org/en-US/Add-ons/WebExtensions/API/Tabs/onHighlighted
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*/
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onHighlighted: new WindowEventManager(context, "tabs.onHighlighted", "TabSelect", (fire, event) => {
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let nativeTab = event.originalTarget;
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let tabIds = [tabTracker.getId(nativeTab)];
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let windowId = windowTracker.getId(nativeTab.ownerGlobal);
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fire.async({tabIds, windowId});
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}).api(),
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onAttached: new SingletonEventManager(context, "tabs.onAttached", fire => {
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let listener = (eventName, event) => {
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fire.async(event.tabId, {newWindowId: event.newWindowId, newPosition: event.newPosition});
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};
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tabTracker.on("tab-attached", listener);
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return () => {
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tabTracker.off("tab-attached", listener);
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};
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}).api(),
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onDetached: new SingletonEventManager(context, "tabs.onDetached", fire => {
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let listener = (eventName, event) => {
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fire.async(event.tabId, {oldWindowId: event.oldWindowId, oldPosition: event.oldPosition});
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};
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tabTracker.on("tab-detached", listener);
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return () => {
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tabTracker.off("tab-detached", listener);
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};
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}).api(),
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onRemoved: new SingletonEventManager(context, "tabs.onRemoved", fire => {
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let listener = (eventName, event) => {
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fire.async(event.tabId, {windowId: event.windowId, isWindowClosing: event.isWindowClosing});
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};
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tabTracker.on("tab-removed", listener);
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return () => {
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tabTracker.off("tab-removed", listener);
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};
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}).api(),
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onReplaced: new SingletonEventManager(context, "tabs.onReplaced", fire => {
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return () => {};
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}).api(),
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onMoved: new SingletonEventManager(context, "tabs.onMoved", fire => {
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// There are certain circumstances where we need to ignore a move event.
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//
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// Namely, the first time the tab is moved after it's created, we need
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// to report the final position as the initial position in the tab's
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// onAttached or onCreated event. This is because most tabs are inserted
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// in a temporary location and then moved after the TabOpen event fires,
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// which generates a TabOpen event followed by a TabMove event, which
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// does not match the contract of our API.
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let ignoreNextMove = new WeakSet();
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let openListener = event => {
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ignoreNextMove.add(event.target);
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// Remove the tab from the set on the next tick, since it will already
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// have been moved by then.
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Promise.resolve().then(() => {
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ignoreNextMove.delete(event.target);
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});
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};
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let moveListener = event => {
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let nativeTab = event.originalTarget;
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if (ignoreNextMove.has(nativeTab)) {
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ignoreNextMove.delete(nativeTab);
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return;
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}
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fire.async(tabTracker.getId(nativeTab), {
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windowId: windowTracker.getId(nativeTab.ownerGlobal),
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fromIndex: event.detail,
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toIndex: nativeTab._tPos,
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});
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};
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windowTracker.addListener("TabMove", moveListener);
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windowTracker.addListener("TabOpen", openListener);
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return () => {
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windowTracker.removeListener("TabMove", moveListener);
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windowTracker.removeListener("TabOpen", openListener);
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};
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}).api(),
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onUpdated: new SingletonEventManager(context, "tabs.onUpdated", fire => {
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const restricted = ["url", "favIconUrl", "title"];
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function sanitize(extension, changeInfo) {
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let result = {};
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let nonempty = false;
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for (let prop in changeInfo) {
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if (extension.hasPermission("tabs") || !restricted.includes(prop)) {
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nonempty = true;
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result[prop] = changeInfo[prop];
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}
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}
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return [nonempty, result];
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}
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let fireForTab = (tab, changed) => {
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let [needed, changeInfo] = sanitize(extension, changed);
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if (needed) {
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fire.async(tab.id, changeInfo, tab.convert());
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}
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};
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let listener = event => {
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let needed = [];
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if (event.type == "TabAttrModified") {
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let changed = event.detail.changed;
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if (changed.includes("image")) {
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needed.push("favIconUrl");
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}
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if (changed.includes("muted")) {
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needed.push("mutedInfo");
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}
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if (changed.includes("soundplaying")) {
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needed.push("audible");
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}
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if (changed.includes("label")) {
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needed.push("title");
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}
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} else if (event.type == "TabPinned") {
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needed.push("pinned");
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} else if (event.type == "TabUnpinned") {
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needed.push("pinned");
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}
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let tab = tabManager.getWrapper(event.originalTarget);
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let changeInfo = {};
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for (let prop of needed) {
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changeInfo[prop] = tab[prop];
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}
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fireForTab(tab, changeInfo);
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};
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let statusListener = ({browser, status, url}) => {
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let {gBrowser} = browser.ownerGlobal;
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let tabElem = gBrowser.getTabForBrowser(browser);
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if (tabElem) {
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let changed = {status};
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if (url) {
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changed.url = url;
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}
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fireForTab(tabManager.wrapTab(tabElem), changed);
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}
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};
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windowTracker.addListener("status", statusListener);
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windowTracker.addListener("TabAttrModified", listener);
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windowTracker.addListener("TabPinned", listener);
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windowTracker.addListener("TabUnpinned", listener);
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return () => {
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windowTracker.removeListener("status", statusListener);
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windowTracker.removeListener("TabAttrModified", listener);
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windowTracker.removeListener("TabPinned", listener);
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windowTracker.removeListener("TabUnpinned", listener);
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};
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}).api(),
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create(createProperties) {
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return new Promise((resolve, reject) => {
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let window = createProperties.windowId !== null ?
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windowTracker.getWindow(createProperties.windowId, context) :
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windowTracker.topWindow;
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if (!window.gBrowser) {
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let obs = (finishedWindow, topic, data) => {
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if (finishedWindow != window) {
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return;
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}
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Services.obs.removeObserver(obs, "browser-delayed-startup-finished");
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resolve(window);
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};
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Services.obs.addObserver(obs, "browser-delayed-startup-finished", false);
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} else {
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resolve(window);
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}
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}).then(window => {
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let url;
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if (createProperties.url !== null) {
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url = context.uri.resolve(createProperties.url);
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if (!context.checkLoadURL(url, {dontReportErrors: true})) {
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return Promise.reject({message: `Illegal URL: ${url}`});
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}
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}
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if (createProperties.cookieStoreId && !extension.hasPermission("cookies")) {
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return Promise.reject({message: `No permission for cookieStoreId: ${createProperties.cookieStoreId}`});
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}
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let options = {};
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if (createProperties.cookieStoreId) {
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if (!global.isValidCookieStoreId(createProperties.cookieStoreId)) {
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return Promise.reject({message: `Illegal cookieStoreId: ${createProperties.cookieStoreId}`});
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}
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let privateWindow = PrivateBrowsingUtils.isBrowserPrivate(window.gBrowser);
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if (privateWindow && !global.isPrivateCookieStoreId(createProperties.cookieStoreId)) {
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return Promise.reject({message: `Illegal to set non-private cookieStoreId in a private window`});
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}
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if (!privateWindow && global.isPrivateCookieStoreId(createProperties.cookieStoreId)) {
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return Promise.reject({message: `Illegal to set private cookieStoreId in a non-private window`});
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}
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if (global.isContainerCookieStoreId(createProperties.cookieStoreId)) {
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let containerId = global.getContainerForCookieStoreId(createProperties.cookieStoreId);
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if (!containerId) {
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return Promise.reject({message: `No cookie store exists with ID ${createProperties.cookieStoreId}`});
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}
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options.userContextId = containerId;
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}
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}
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// Make sure things like about:blank and data: URIs never inherit,
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// and instead always get a NullPrincipal.
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options.disallowInheritPrincipal = true;
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tabListener.initTabReady();
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let nativeTab = window.gBrowser.addTab(url || window.BROWSER_NEW_TAB_URL, options);
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let active = true;
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if (createProperties.active !== null) {
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active = createProperties.active;
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}
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if (active) {
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window.gBrowser.selectedTab = nativeTab;
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}
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if (createProperties.index !== null) {
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window.gBrowser.moveTabTo(nativeTab, createProperties.index);
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}
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if (createProperties.pinned) {
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window.gBrowser.pinTab(nativeTab);
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}
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if (active && !url) {
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window.focusAndSelectUrlBar();
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}
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if (createProperties.url && createProperties.url !== window.BROWSER_NEW_TAB_URL) {
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// We can't wait for a location change event for about:newtab,
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// since it may be pre-rendered, in which case its initial
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// location change event has already fired.
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// Mark the tab as initializing, so that operations like
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// `executeScript` wait until the requested URL is loaded in
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// the tab before dispatching messages to the inner window
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// that contains the URL we're attempting to load.
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tabListener.initializingTabs.add(nativeTab);
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}
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return tabManager.convert(nativeTab);
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});
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},
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async remove(tabs) {
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if (!Array.isArray(tabs)) {
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tabs = [tabs];
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}
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for (let tabId of tabs) {
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let nativeTab = tabTracker.getTab(tabId);
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nativeTab.ownerGlobal.gBrowser.removeTab(nativeTab);
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}
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},
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async update(tabId, updateProperties) {
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let nativeTab = getTabOrActive(tabId);
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let tabbrowser = nativeTab.ownerGlobal.gBrowser;
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if (updateProperties.url !== null) {
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let url = context.uri.resolve(updateProperties.url);
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if (!context.checkLoadURL(url, {dontReportErrors: true})) {
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return Promise.reject({message: `Illegal URL: ${url}`});
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}
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nativeTab.linkedBrowser.loadURI(url);
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}
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if (updateProperties.active !== null) {
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if (updateProperties.active) {
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tabbrowser.selectedTab = nativeTab;
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} else {
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// Not sure what to do here? Which tab should we select?
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}
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}
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if (updateProperties.muted !== null) {
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if (nativeTab.muted != updateProperties.muted) {
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nativeTab.toggleMuteAudio(extension.uuid);
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}
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}
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if (updateProperties.pinned !== null) {
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if (updateProperties.pinned) {
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tabbrowser.pinTab(nativeTab);
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} else {
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tabbrowser.unpinTab(nativeTab);
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}
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}
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// FIXME: highlighted/selected, openerTabId
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return tabManager.convert(nativeTab);
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},
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async reload(tabId, reloadProperties) {
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let nativeTab = getTabOrActive(tabId);
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let flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
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if (reloadProperties && reloadProperties.bypassCache) {
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flags |= Ci.nsIWebNavigation.LOAD_FLAGS_BYPASS_CACHE;
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}
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nativeTab.linkedBrowser.reloadWithFlags(flags);
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},
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async get(tabId) {
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return tabManager.get(tabId).convert();
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},
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getCurrent() {
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let tabData;
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if (context.tabId) {
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tabData = tabManager.get(context.tabId).convert();
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}
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return Promise.resolve(tabData);
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},
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async query(queryInfo) {
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if (queryInfo.url !== null) {
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if (!extension.hasPermission("tabs")) {
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return Promise.reject({message: 'The "tabs" permission is required to use the query API with the "url" parameter'});
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}
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queryInfo = Object.assign({}, queryInfo);
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queryInfo.url = new MatchPattern(queryInfo.url);
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}
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return Array.from(tabManager.query(queryInfo, context),
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tab => tab.convert());
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},
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async captureVisibleTab(windowId, options) {
|
|
let window = windowId == null ?
|
|
windowTracker.topWindow :
|
|
windowTracker.getWindow(windowId, context);
|
|
|
|
let tab = tabManager.wrapTab(window.gBrowser.selectedTab);
|
|
await tabListener.awaitTabReady(tab.nativeTab);
|
|
|
|
return tab.capture(context, options);
|
|
},
|
|
|
|
async detectLanguage(tabId) {
|
|
let tab = await promiseTabWhenReady(tabId);
|
|
|
|
return tab.sendMessage(context, "Extension:DetectLanguage");
|
|
},
|
|
|
|
async executeScript(tabId, details) {
|
|
let tab = await promiseTabWhenReady(tabId);
|
|
|
|
return tab.executeScript(context, details);
|
|
},
|
|
|
|
async insertCSS(tabId, details) {
|
|
let tab = await promiseTabWhenReady(tabId);
|
|
|
|
return tab.insertCSS(context, details);
|
|
},
|
|
|
|
async removeCSS(tabId, details) {
|
|
let tab = await promiseTabWhenReady(tabId);
|
|
|
|
return tab.removeCSS(context, details);
|
|
},
|
|
|
|
async move(tabIds, moveProperties) {
|
|
let index = moveProperties.index;
|
|
let tabsMoved = [];
|
|
if (!Array.isArray(tabIds)) {
|
|
tabIds = [tabIds];
|
|
}
|
|
|
|
let destinationWindow = null;
|
|
if (moveProperties.windowId !== null) {
|
|
destinationWindow = windowTracker.getWindow(moveProperties.windowId);
|
|
// Fail on an invalid window.
|
|
if (!destinationWindow) {
|
|
return Promise.reject({message: `Invalid window ID: ${moveProperties.windowId}`});
|
|
}
|
|
}
|
|
|
|
/*
|
|
Indexes are maintained on a per window basis so that a call to
|
|
move([tabA, tabB], {index: 0})
|
|
-> tabA to 0, tabB to 1 if tabA and tabB are in the same window
|
|
move([tabA, tabB], {index: 0})
|
|
-> tabA to 0, tabB to 0 if tabA and tabB are in different windows
|
|
*/
|
|
let indexMap = new Map();
|
|
|
|
let tabs = tabIds.map(tabId => tabTracker.getTab(tabId));
|
|
for (let nativeTab of tabs) {
|
|
// If the window is not specified, use the window from the tab.
|
|
let window = destinationWindow || nativeTab.ownerGlobal;
|
|
let gBrowser = window.gBrowser;
|
|
|
|
let insertionPoint = indexMap.get(window) || index;
|
|
// If the index is -1 it should go to the end of the tabs.
|
|
if (insertionPoint == -1) {
|
|
insertionPoint = gBrowser.tabs.length;
|
|
}
|
|
|
|
// We can only move pinned tabs to a point within, or just after,
|
|
// the current set of pinned tabs. Unpinned tabs, likewise, can only
|
|
// be moved to a position after the current set of pinned tabs.
|
|
// Attempts to move a tab to an illegal position are ignored.
|
|
let numPinned = gBrowser._numPinnedTabs;
|
|
let ok = nativeTab.pinned ? insertionPoint <= numPinned : insertionPoint >= numPinned;
|
|
if (!ok) {
|
|
continue;
|
|
}
|
|
|
|
indexMap.set(window, insertionPoint + 1);
|
|
|
|
if (nativeTab.ownerGlobal != window) {
|
|
// If the window we are moving the tab in is different, then move the tab
|
|
// to the new window.
|
|
nativeTab = gBrowser.adoptTab(nativeTab, insertionPoint, false);
|
|
} else {
|
|
// If the window we are moving is the same, just move the tab.
|
|
gBrowser.moveTabTo(nativeTab, insertionPoint);
|
|
}
|
|
tabsMoved.push(nativeTab);
|
|
}
|
|
|
|
return tabsMoved.map(nativeTab => tabManager.convert(nativeTab));
|
|
},
|
|
|
|
duplicate(tabId) {
|
|
let nativeTab = tabTracker.getTab(tabId);
|
|
|
|
let gBrowser = nativeTab.ownerGlobal.gBrowser;
|
|
let newTab = gBrowser.duplicateTab(nativeTab);
|
|
|
|
return new Promise(resolve => {
|
|
// We need to use SSTabRestoring because any attributes set before
|
|
// are ignored. SSTabRestored is too late and results in a jump in
|
|
// the UI. See http://bit.ly/session-store-api for more information.
|
|
newTab.addEventListener("SSTabRestoring", function() {
|
|
// As the tab is restoring, move it to the correct position.
|
|
|
|
// Pinned tabs that are duplicated are inserted
|
|
// after the existing pinned tab and pinned.
|
|
if (nativeTab.pinned) {
|
|
gBrowser.pinTab(newTab);
|
|
}
|
|
gBrowser.moveTabTo(newTab, nativeTab._tPos + 1);
|
|
}, {once: true});
|
|
|
|
newTab.addEventListener("SSTabRestored", function() {
|
|
// Once it has been restored, select it and return the promise.
|
|
gBrowser.selectedTab = newTab;
|
|
|
|
resolve(tabManager.convert(newTab));
|
|
}, {once: true});
|
|
});
|
|
},
|
|
|
|
getZoom(tabId) {
|
|
let nativeTab = getTabOrActive(tabId);
|
|
|
|
let {ZoomManager} = nativeTab.ownerGlobal;
|
|
let zoom = ZoomManager.getZoomForBrowser(nativeTab.linkedBrowser);
|
|
|
|
return Promise.resolve(zoom);
|
|
},
|
|
|
|
setZoom(tabId, zoom) {
|
|
let nativeTab = getTabOrActive(tabId);
|
|
|
|
let {FullZoom, ZoomManager} = nativeTab.ownerGlobal;
|
|
|
|
if (zoom === 0) {
|
|
// A value of zero means use the default zoom factor.
|
|
return FullZoom.reset(nativeTab.linkedBrowser);
|
|
} else if (zoom >= ZoomManager.MIN && zoom <= ZoomManager.MAX) {
|
|
FullZoom.setZoom(zoom, nativeTab.linkedBrowser);
|
|
} else {
|
|
return Promise.reject({
|
|
message: `Zoom value ${zoom} out of range (must be between ${ZoomManager.MIN} and ${ZoomManager.MAX})`,
|
|
});
|
|
}
|
|
|
|
return Promise.resolve();
|
|
},
|
|
|
|
_getZoomSettings(tabId) {
|
|
let nativeTab = getTabOrActive(tabId);
|
|
|
|
let {FullZoom} = nativeTab.ownerGlobal;
|
|
|
|
return {
|
|
mode: "automatic",
|
|
scope: FullZoom.siteSpecific ? "per-origin" : "per-tab",
|
|
defaultZoomFactor: 1,
|
|
};
|
|
},
|
|
|
|
getZoomSettings(tabId) {
|
|
return Promise.resolve(this._getZoomSettings(tabId));
|
|
},
|
|
|
|
setZoomSettings(tabId, settings) {
|
|
let nativeTab = getTabOrActive(tabId);
|
|
|
|
let currentSettings = this._getZoomSettings(tabTracker.getId(nativeTab));
|
|
|
|
if (!Object.keys(settings).every(key => settings[key] === currentSettings[key])) {
|
|
return Promise.reject(`Unsupported zoom settings: ${JSON.stringify(settings)}`);
|
|
}
|
|
return Promise.resolve();
|
|
},
|
|
|
|
onZoomChange: new SingletonEventManager(context, "tabs.onZoomChange", fire => {
|
|
let getZoomLevel = browser => {
|
|
let {ZoomManager} = browser.ownerGlobal;
|
|
|
|
return ZoomManager.getZoomForBrowser(browser);
|
|
};
|
|
|
|
// Stores the last known zoom level for each tab's browser.
|
|
// WeakMap[<browser> -> number]
|
|
let zoomLevels = new WeakMap();
|
|
|
|
// Store the zoom level for all existing tabs.
|
|
for (let window of windowTracker.browserWindows()) {
|
|
for (let nativeTab of window.gBrowser.tabs) {
|
|
let browser = nativeTab.linkedBrowser;
|
|
zoomLevels.set(browser, getZoomLevel(browser));
|
|
}
|
|
}
|
|
|
|
let tabCreated = (eventName, event) => {
|
|
let browser = event.nativeTab.linkedBrowser;
|
|
zoomLevels.set(browser, getZoomLevel(browser));
|
|
};
|
|
|
|
|
|
let zoomListener = event => {
|
|
let browser = event.originalTarget;
|
|
|
|
// For non-remote browsers, this event is dispatched on the document
|
|
// rather than on the <browser>.
|
|
if (browser instanceof Ci.nsIDOMDocument) {
|
|
browser = browser.defaultView.QueryInterface(Ci.nsIInterfaceRequestor)
|
|
.getInterface(Ci.nsIDocShell)
|
|
.chromeEventHandler;
|
|
}
|
|
|
|
let {gBrowser} = browser.ownerGlobal;
|
|
let nativeTab = gBrowser.getTabForBrowser(browser);
|
|
if (!nativeTab) {
|
|
// We only care about zoom events in the top-level browser of a tab.
|
|
return;
|
|
}
|
|
|
|
let oldZoomFactor = zoomLevels.get(browser);
|
|
let newZoomFactor = getZoomLevel(browser);
|
|
|
|
if (oldZoomFactor != newZoomFactor) {
|
|
zoomLevels.set(browser, newZoomFactor);
|
|
|
|
let tabId = tabTracker.getId(nativeTab);
|
|
fire.async({
|
|
tabId,
|
|
oldZoomFactor,
|
|
newZoomFactor,
|
|
zoomSettings: self.tabs._getZoomSettings(tabId),
|
|
});
|
|
}
|
|
};
|
|
|
|
tabTracker.on("tab-attached", tabCreated);
|
|
tabTracker.on("tab-created", tabCreated);
|
|
|
|
windowTracker.addListener("FullZoomChange", zoomListener);
|
|
windowTracker.addListener("TextZoomChange", zoomListener);
|
|
return () => {
|
|
tabTracker.off("tab-attached", tabCreated);
|
|
tabTracker.off("tab-created", tabCreated);
|
|
|
|
windowTracker.removeListener("FullZoomChange", zoomListener);
|
|
windowTracker.removeListener("TextZoomChange", zoomListener);
|
|
};
|
|
}).api(),
|
|
},
|
|
};
|
|
return self;
|
|
});
|