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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+"use strict";
+
+/**
+ * NOTE: If you change the globals in this file, you must check if the globals
+ * list in mobile/android/.eslintrc.js also needs updating.
+ */
+
+ChromeUtils.defineESModuleGetters(this, {
+ GeckoViewTabBridge: "resource://gre/modules/GeckoViewTab.sys.mjs",
+ PrivateBrowsingUtils: "resource://gre/modules/PrivateBrowsingUtils.sys.mjs",
+ mobileWindowTracker: "resource://gre/modules/GeckoViewWebExtension.sys.mjs",
+});
+
+var { EventDispatcher } = ChromeUtils.importESModule(
+ "resource://gre/modules/Messaging.sys.mjs"
+);
+
+var { ExtensionCommon } = ChromeUtils.importESModule(
+ "resource://gre/modules/ExtensionCommon.sys.mjs"
+);
+var { ExtensionUtils } = ChromeUtils.importESModule(
+ "resource://gre/modules/ExtensionUtils.sys.mjs"
+);
+
+var { DefaultWeakMap, ExtensionError } = ExtensionUtils;
+
+var { defineLazyGetter } = ExtensionCommon;
+
+const BrowserStatusFilter = Components.Constructor(
+ "@mozilla.org/appshell/component/browser-status-filter;1",
+ "nsIWebProgress",
+ "addProgressListener"
+);
+
+const WINDOW_TYPE = "navigator:geckoview";
+
+// We need let to break cyclic dependency
+/* eslint-disable-next-line prefer-const */
+let windowTracker;
+
+/**
+ * A nsIWebProgressListener for a specific XUL browser, which delegates the
+ * events that it receives to a tab progress listener, and prepends the browser
+ * to their arguments list.
+ *
+ * @param {XULElement} browser
+ * A XUL browser element.
+ * @param {object} listener
+ * A tab progress listener object.
+ * @param {integer} flags
+ * The web progress notification flags with which to filter events.
+ */
+class BrowserProgressListener {
+ constructor(browser, listener, flags) {
+ this.listener = listener;
+ this.browser = browser;
+ this.filter = new BrowserStatusFilter(this, flags);
+ this.browser.addProgressListener(this.filter, flags);
+ }
+
+ /**
+ * Destroy the listener, and perform any necessary cleanup.
+ */
+ destroy() {
+ this.browser.removeProgressListener(this.filter);
+ this.filter.removeProgressListener(this);
+ }
+
+ /**
+ * Calls the appropriate listener in the wrapped tab progress listener, with
+ * the wrapped XUL browser object as its first argument, and the additional
+ * arguments in `args`.
+ *
+ * @param {string} method
+ * The name of the nsIWebProgressListener method which is being
+ * delegated.
+ * @param {*} args
+ * The arguments to pass to the delegated listener.
+ * @private
+ */
+ delegate(method, ...args) {
+ if (this.listener[method]) {
+ this.listener[method](this.browser, ...args);
+ }
+ }
+
+ onLocationChange(webProgress, request, locationURI, flags) {
+ const window = this.browser.ownerGlobal;
+ // GeckoView windows can become popups at any moment, so we need to check
+ // here
+ if (!windowTracker.isBrowserWindow(window)) {
+ return;
+ }
+
+ this.delegate("onLocationChange", webProgress, request, locationURI, flags);
+ }
+ onStateChange(webProgress, request, stateFlags, status) {
+ this.delegate("onStateChange", webProgress, request, stateFlags, status);
+ }
+}
+
+const PROGRESS_LISTENER_FLAGS =
+ Ci.nsIWebProgress.NOTIFY_STATE_ALL | Ci.nsIWebProgress.NOTIFY_LOCATION;
+
+class ProgressListenerWrapper {
+ constructor(window, listener) {
+ this.listener = new BrowserProgressListener(
+ window.browser,
+ listener,
+ PROGRESS_LISTENER_FLAGS
+ );
+ }
+
+ destroy() {
+ this.listener.destroy();
+ }
+}
+
+class WindowTracker extends WindowTrackerBase {
+ constructor(...args) {
+ super(...args);
+
+ this.progressListeners = new DefaultWeakMap(() => new WeakMap());
+ }
+
+ getCurrentWindow(context) {
+ // In GeckoView the popup is on a separate window so getCurrentWindow for
+ // the popup should return whatever is the topWindow.
+ // TODO: Bug 1651506 use context?.viewType === "popup" instead
+ if (context?.currentWindow?.moduleManager.settings.isPopup) {
+ return this.topWindow;
+ }
+ return super.getCurrentWindow(context);
+ }
+
+ get topWindow() {
+ return mobileWindowTracker.topWindow;
+ }
+
+ get topNonPBWindow() {
+ return mobileWindowTracker.topNonPBWindow;
+ }
+
+ isBrowserWindow(window) {
+ const { documentElement } = window.document;
+ return documentElement.getAttribute("windowtype") === WINDOW_TYPE;
+ }
+
+ addProgressListener(window, listener) {
+ const listeners = this.progressListeners.get(window);
+ if (!listeners.has(listener)) {
+ const wrapper = new ProgressListenerWrapper(window, listener);
+ listeners.set(listener, wrapper);
+ }
+ }
+
+ removeProgressListener(window, listener) {
+ const listeners = this.progressListeners.get(window);
+ const wrapper = listeners.get(listener);
+ if (wrapper) {
+ wrapper.destroy();
+ listeners.delete(listener);
+ }
+ }
+}
+
+/**
+ * Helper to create an event manager which listens for an event in the Android
+ * global EventDispatcher, and calls the given listener function whenever the
+ * event is received. That listener function receives a `fire` object,
+ * which it can use to dispatch events to the extension, and an object
+ * detailing the EventDispatcher event that was received.
+ *
+ * @param {BaseContext} context
+ * The extension context which the event manager belongs to.
+ * @param {string} name
+ * The API name of the event manager, e.g.,"runtime.onMessage".
+ * @param {string} event
+ * The name of the EventDispatcher event to listen for.
+ * @param {Function} listener
+ * The listener function to call when an EventDispatcher event is
+ * recieved.
+ *
+ * @returns {object} An injectable api for the new event.
+ */
+global.makeGlobalEvent = function makeGlobalEvent(
+ context,
+ name,
+ event,
+ listener
+) {
+ return new EventManager({
+ context,
+ name,
+ register: fire => {
+ const listener2 = {
+ onEvent(event, data, callback) {
+ listener(fire, data);
+ },
+ };
+
+ EventDispatcher.instance.registerListener(listener2, [event]);
+ return () => {
+ EventDispatcher.instance.unregisterListener(listener2, [event]);
+ };
+ },
+ }).api();
+};
+
+class TabTracker extends TabTrackerBase {
+ init() {
+ if (this.initialized) {
+ return;
+ }
+ this.initialized = true;
+
+ windowTracker.addOpenListener(window => {
+ const nativeTab = window.tab;
+ this.emit("tab-created", { nativeTab });
+ });
+
+ windowTracker.addCloseListener(window => {
+ const { tab: nativeTab, browser } = window;
+ const { windowId, tabId } = this.getBrowserData(browser);
+ this.emit("tab-removed", {
+ nativeTab,
+ tabId,
+ windowId,
+ // In GeckoView, it is not meaningful to speak of "window closed", because a tab is a window.
+ // Until we have a meaningful way to group tabs (and close multiple tabs at once),
+ // let's use isWindowClosing: false
+ isWindowClosing: false,
+ });
+ });
+ }
+
+ getId(nativeTab) {
+ return nativeTab.id;
+ }
+
+ getTab(id, default_ = undefined) {
+ const windowId = GeckoViewTabBridge.tabIdToWindowId(id);
+ const window = windowTracker.getWindow(windowId, null, false);
+
+ if (window) {
+ const { tab } = window;
+ if (tab) {
+ return tab;
+ }
+ }
+
+ if (default_ !== undefined) {
+ return default_;
+ }
+ throw new ExtensionError(`Invalid tab ID: ${id}`);
+ }
+
+ getBrowserData(browser) {
+ const window = browser.ownerGlobal;
+ const { tab } = window;
+ if (!tab) {
+ return {
+ tabId: -1,
+ windowId: -1,
+ };
+ }
+
+ const windowId = windowTracker.getId(window);
+
+ if (!windowTracker.isBrowserWindow(window)) {
+ return {
+ windowId,
+ tabId: -1,
+ };
+ }
+
+ return {
+ windowId,
+ tabId: this.getId(tab),
+ };
+ }
+
+ get activeTab() {
+ const window = windowTracker.topWindow;
+ if (window) {
+ return window.tab;
+ }
+ return null;
+ }
+}
+
+windowTracker = new WindowTracker();
+const tabTracker = new TabTracker();
+
+Object.assign(global, { tabTracker, windowTracker });
+
+class Tab extends TabBase {
+ get _favIconUrl() {
+ return undefined;
+ }
+
+ get attention() {
+ return false;
+ }
+
+ get audible() {
+ return this.nativeTab.playingAudio;
+ }
+
+ get browser() {
+ return this.nativeTab.browser;
+ }
+
+ get discarded() {
+ return this.browser.getAttribute("pending") === "true";
+ }
+
+ get cookieStoreId() {
+ return getCookieStoreIdForTab(this, this.nativeTab);
+ }
+
+ get height() {
+ return this.browser.clientHeight;
+ }
+
+ get incognito() {
+ return PrivateBrowsingUtils.isBrowserPrivate(this.browser);
+ }
+
+ get index() {
+ return 0;
+ }
+
+ get mutedInfo() {
+ return { muted: false };
+ }
+
+ get lastAccessed() {
+ return this.nativeTab.lastTouchedAt;
+ }
+
+ get pinned() {
+ return false;
+ }
+
+ get active() {
+ return this.nativeTab.getActive();
+ }
+
+ get highlighted() {
+ return this.active;
+ }
+
+ get status() {
+ if (this.browser.webProgress.isLoadingDocument) {
+ return "loading";
+ }
+ return "complete";
+ }
+
+ get successorTabId() {
+ return -1;
+ }
+
+ get width() {
+ return this.browser.clientWidth;
+ }
+
+ get window() {
+ return this.browser.ownerGlobal;
+ }
+
+ get windowId() {
+ return windowTracker.getId(this.window);
+ }
+
+ // TODO: Just return false for these until properly implemented on Android.
+ // https://bugzilla.mozilla.org/show_bug.cgi?id=1402924
+ get isArticle() {
+ return false;
+ }
+
+ get isInReaderMode() {
+ return false;
+ }
+
+ get hidden() {
+ return false;
+ }
+
+ get sharingState() {
+ return {
+ screen: undefined,
+ microphone: false,
+ camera: false,
+ };
+ }
+}
+
+// Manages tab-specific context data and dispatches tab select and close events.
+class TabContext extends EventEmitter {
+ constructor(getDefaultPrototype) {
+ super();
+
+ windowTracker.addListener("progress", this);
+
+ this.getDefaultPrototype = getDefaultPrototype;
+ this.tabData = new Map();
+ }
+
+ onLocationChange(browser, webProgress, request, locationURI, flags) {
+ if (!webProgress.isTopLevel) {
+ // Only pageAction and browserAction are consuming the "location-change" event
+ // to update their per-tab status, and they should only do so in response of
+ // location changes related to the top level frame (See Bug 1493470 for a rationale).
+ return;
+ }
+ const { tab } = browser.ownerGlobal;
+ // fromBrowse will be false in case of e.g. a hash change or history.pushState
+ const fromBrowse = !(
+ flags & Ci.nsIWebProgressListener.LOCATION_CHANGE_SAME_DOCUMENT
+ );
+ this.emit(
+ "location-change",
+ {
+ id: tab.id,
+ linkedBrowser: browser,
+ // TODO: we don't support selected so we just alway say we are
+ selected: true,
+ },
+ fromBrowse
+ );
+ }
+
+ get(tabId) {
+ if (!this.tabData.has(tabId)) {
+ const data = Object.create(this.getDefaultPrototype(tabId));
+ this.tabData.set(tabId, data);
+ }
+
+ return this.tabData.get(tabId);
+ }
+
+ clear(tabId) {
+ this.tabData.delete(tabId);
+ }
+
+ shutdown() {
+ windowTracker.removeListener("progress", this);
+ }
+}
+
+class Window extends WindowBase {
+ get focused() {
+ return this.window.document.hasFocus();
+ }
+
+ isCurrentFor(context) {
+ // In GeckoView the popup is on a separate window so the current window for
+ // the popup is whatever is the topWindow.
+ // TODO: Bug 1651506 use context?.viewType === "popup" instead
+ if (context?.currentWindow?.moduleManager.settings.isPopup) {
+ return mobileWindowTracker.topWindow == this.window;
+ }
+ return super.isCurrentFor(context);
+ }
+
+ get top() {
+ return this.window.screenY;
+ }
+
+ get left() {
+ return this.window.screenX;
+ }
+
+ get width() {
+ return this.window.outerWidth;
+ }
+
+ get height() {
+ return this.window.outerHeight;
+ }
+
+ get incognito() {
+ return PrivateBrowsingUtils.isWindowPrivate(this.window);
+ }
+
+ get alwaysOnTop() {
+ return false;
+ }
+
+ get isLastFocused() {
+ return this.window === windowTracker.topWindow;
+ }
+
+ get state() {
+ return "fullscreen";
+ }
+
+ *getTabs() {
+ yield this.activeTab;
+ }
+
+ *getHighlightedTabs() {
+ yield this.activeTab;
+ }
+
+ get activeTab() {
+ const { tabManager } = this.extension;
+ return tabManager.getWrapper(this.window.tab);
+ }
+
+ getTabAtIndex(index) {
+ if (index == 0) {
+ return this.activeTab;
+ }
+ }
+}
+
+Object.assign(global, { Tab, TabContext, Window });
+
+class TabManager extends TabManagerBase {
+ get(tabId, default_ = undefined) {
+ const nativeTab = tabTracker.getTab(tabId, default_);
+
+ if (nativeTab) {
+ return this.getWrapper(nativeTab);
+ }
+ return default_;
+ }
+
+ addActiveTabPermission(nativeTab = tabTracker.activeTab) {
+ return super.addActiveTabPermission(nativeTab);
+ }
+
+ revokeActiveTabPermission(nativeTab = tabTracker.activeTab) {
+ return super.revokeActiveTabPermission(nativeTab);
+ }
+
+ canAccessTab(nativeTab) {
+ return (
+ this.extension.privateBrowsingAllowed ||
+ !PrivateBrowsingUtils.isBrowserPrivate(nativeTab.browser)
+ );
+ }
+
+ wrapTab(nativeTab) {
+ return new Tab(this.extension, nativeTab, nativeTab.id);
+ }
+}
+
+class WindowManager extends WindowManagerBase {
+ get(windowId, context) {
+ const window = windowTracker.getWindow(windowId, context);
+
+ return this.getWrapper(window);
+ }
+
+ *getAll(context) {
+ for (const window of windowTracker.browserWindows()) {
+ if (!this.canAccessWindow(window, context)) {
+ continue;
+ }
+ const wrapped = this.getWrapper(window);
+ if (wrapped) {
+ yield wrapped;
+ }
+ }
+ }
+
+ wrapWindow(window) {
+ return new Window(this.extension, window, windowTracker.getId(window));
+ }
+}
+
+// eslint-disable-next-line mozilla/balanced-listeners
+extensions.on("startup", (type, extension) => {
+ defineLazyGetter(extension, "tabManager", () => new TabManager(extension));
+ defineLazyGetter(
+ extension,
+ "windowManager",
+ () => new WindowManager(extension)
+ );
+});
+
+/* eslint-disable mozilla/balanced-listeners */
+extensions.on("page-shutdown", (type, context) => {
+ if (context.viewType == "tab") {
+ const window = context.xulBrowser.ownerGlobal;
+ GeckoViewTabBridge.closeTab({
+ window,
+ extensionId: context.extension.id,
+ });
+ }
+});
+/* eslint-enable mozilla/balanced-listeners */
+
+global.openOptionsPage = async extension => {
+ const { options_ui } = extension.manifest;
+ const extensionId = extension.id;
+
+ if (options_ui.open_in_tab) {
+ // Delegate new tab creation and open the options page in the new tab.
+ const tab = await GeckoViewTabBridge.createNewTab({
+ extensionId,
+ createProperties: {
+ url: options_ui.page,
+ active: true,
+ },
+ });
+
+ const { browser } = tab;
+ const flags = Ci.nsIWebNavigation.LOAD_FLAGS_NONE;
+
+ browser.fixupAndLoadURIString(options_ui.page, {
+ flags,
+ triggeringPrincipal: extension.principal,
+ });
+
+ const newWindow = browser.ownerGlobal;
+ mobileWindowTracker.setTabActive(newWindow, true);
+ return;
+ }
+
+ // Delegate option page handling to the app.
+ return GeckoViewTabBridge.openOptionsPage(extensionId);
+};