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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/. */
+
+/**
+ * This XPCOM component is loaded very early.
+ * Be careful to lazy load dependencies as much as possible.
+ *
+ * It manages all the possible entry points for DevTools:
+ * - Handles command line arguments like -jsconsole,
+ * - Register all key shortcuts,
+ * - Listen for "Browser Tools" system menu opening, under "Tools",
+ * - Inject the wrench icon in toolbar customization, which is used
+ * by the "Browser Tools" list displayed in the hamburger menu,
+ * - Register the JSON Viewer protocol handler.
+ * - Inject the profiler recording button in toolbar customization.
+ *
+ * Only once any of these entry point is fired, this module ensures starting
+ * core modules like 'devtools-browser.js' that hooks the browser windows
+ * and ensure setting up tools.
+ **/
+
+const kDebuggerPrefs = [
+ "devtools.debugger.remote-enabled",
+ "devtools.chrome.enabled",
+];
+
+const DEVTOOLS_POLICY_DISABLED_PREF = "devtools.policy.disabled";
+
+import { AppConstants } from "resource://gre/modules/AppConstants.sys.mjs";
+
+const lazy = {};
+ChromeUtils.defineESModuleGetters(lazy, {
+ CustomizableUI: "resource:///modules/CustomizableUI.sys.mjs",
+ CustomizableWidgets: "resource:///modules/CustomizableWidgets.sys.mjs",
+ PanelMultiView: "resource:///modules/PanelMultiView.sys.mjs",
+ PrivateBrowsingUtils: "resource://gre/modules/PrivateBrowsingUtils.sys.mjs",
+ ProfilerMenuButton:
+ "resource://devtools/client/performance-new/popup/menu-button.sys.mjs",
+ WebChannel: "resource://gre/modules/WebChannel.sys.mjs",
+});
+
+// We don't want to spend time initializing the full loader here so we create
+// our own lazy require.
+ChromeUtils.defineLazyGetter(lazy, "Telemetry", function () {
+ const { require } = ChromeUtils.importESModule(
+ "resource://devtools/shared/loader/Loader.sys.mjs"
+ );
+ // eslint-disable-next-line no-shadow
+ const Telemetry = require("devtools/client/shared/telemetry");
+
+ return Telemetry;
+});
+
+ChromeUtils.defineLazyGetter(lazy, "KeyShortcutsBundle", function () {
+ return new Localization(["devtools/startup/key-shortcuts.ftl"], true);
+});
+
+/**
+ * Safely retrieve a localized DevTools key shortcut from KeyShortcutsBundle.
+ * If the shortcut is not available, this will return null. Consumer code
+ * should rely on this to skip unavailable shortcuts.
+ *
+ * Note that all shortcuts should always be available, but there is a notable
+ * exception, which is why we have to do this. When a localization change is
+ * uplifted to beta, language packs will not be updated immediately when the
+ * updated beta is available.
+ *
+ * This means that language pack users might get a new Beta version but will not
+ * have a language pack with the new strings yet.
+ */
+function getLocalizedKeyShortcut(id) {
+ try {
+ return lazy.KeyShortcutsBundle.formatValueSync(id);
+ } catch (e) {
+ console.error("Failed to retrieve DevTools localized shortcut for id", id);
+ return null;
+ }
+}
+
+ChromeUtils.defineLazyGetter(lazy, "KeyShortcuts", function () {
+ const isMac = AppConstants.platform == "macosx";
+
+ // Common modifier shared by most key shortcuts
+ const modifiers = isMac ? "accel,alt" : "accel,shift";
+
+ // List of all key shortcuts triggering installation UI
+ // `id` should match tool's id from client/definitions.js
+ const shortcuts = [
+ // The following keys are also registered in /client/menus.js
+ // And should be synced.
+
+ // Both are toggling the toolbox on the last selected panel
+ // or the default one.
+ {
+ id: "toggleToolbox",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-toggle-toolbox"),
+ modifiers,
+ },
+ // All locales are using F12
+ {
+ id: "toggleToolboxF12",
+ shortcut: getLocalizedKeyShortcut(
+ "devtools-commandkey-toggle-toolbox-f12"
+ ),
+ modifiers: "", // F12 is the only one without modifiers
+ },
+ // Open the Browser Toolbox
+ {
+ id: "browserToolbox",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-browser-toolbox"),
+ modifiers: "accel,alt,shift",
+ },
+ // Open the Browser Console
+ {
+ id: "browserConsole",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-browser-console"),
+ modifiers: "accel,shift",
+ },
+ // Toggle the Responsive Design Mode
+ {
+ id: "responsiveDesignMode",
+ shortcut: getLocalizedKeyShortcut(
+ "devtools-commandkey-responsive-design-mode"
+ ),
+ modifiers,
+ },
+ // The following keys are also registered in /client/definitions.js
+ // and should be synced.
+
+ // Key for opening the Inspector
+ {
+ toolId: "inspector",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-inspector"),
+ modifiers,
+ },
+ // Key for opening the Web Console
+ {
+ toolId: "webconsole",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-webconsole"),
+ modifiers,
+ },
+ // Key for opening the Debugger
+ {
+ toolId: "jsdebugger",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-jsdebugger"),
+ modifiers,
+ },
+ // Key for opening the Network Monitor
+ {
+ toolId: "netmonitor",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-netmonitor"),
+ modifiers,
+ },
+ // Key for opening the Style Editor
+ {
+ toolId: "styleeditor",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-styleeditor"),
+ modifiers: "shift",
+ },
+ // Key for opening the Performance Panel
+ {
+ toolId: "performance",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-performance"),
+ modifiers: "shift",
+ },
+ // Key for opening the Storage Panel
+ {
+ toolId: "storage",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-storage"),
+ modifiers: "shift",
+ },
+ // Key for opening the DOM Panel
+ {
+ toolId: "dom",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-dom"),
+ modifiers,
+ },
+ // Key for opening the Accessibility Panel
+ {
+ toolId: "accessibility",
+ shortcut: getLocalizedKeyShortcut(
+ "devtools-commandkey-accessibility-f12"
+ ),
+ modifiers: "shift",
+ },
+ ];
+
+ if (isMac) {
+ // Add the extra key command for macOS, so you can open the inspector with cmd+shift+C
+ // like on Chrome DevTools.
+ shortcuts.push({
+ id: "inspectorMac",
+ toolId: "inspector",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-inspector"),
+ modifiers: "accel,shift",
+ });
+ }
+
+ if (lazy.ProfilerMenuButton.isInNavbar()) {
+ shortcuts.push(...getProfilerKeyShortcuts());
+ }
+
+ // Allow toggling the JavaScript tracing not only from DevTools UI,
+ // but also from the web page when it is focused.
+ if (
+ Services.prefs.getBoolPref(
+ "devtools.debugger.features.javascript-tracing",
+ false
+ )
+ ) {
+ shortcuts.push({
+ id: "javascriptTracingToggle",
+ shortcut: getLocalizedKeyShortcut(
+ "devtools-commandkey-javascript-tracing-toggle"
+ ),
+ modifiers: "control,shift",
+ });
+ }
+
+ return shortcuts;
+});
+
+function getProfilerKeyShortcuts() {
+ return [
+ // Start/stop the profiler
+ {
+ id: "profilerStartStop",
+ shortcut: getLocalizedKeyShortcut(
+ "devtools-commandkey-profiler-start-stop"
+ ),
+ modifiers: "control,shift",
+ },
+ // Capture a profile
+ {
+ id: "profilerCapture",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-profiler-capture"),
+ modifiers: "control,shift",
+ },
+ // Because it's not uncommon for content or extension to bind this
+ // shortcut, allow using alt as well for starting and stopping the profiler
+ {
+ id: "profilerStartStopAlternate",
+ shortcut: getLocalizedKeyShortcut(
+ "devtools-commandkey-profiler-start-stop"
+ ),
+ modifiers: "control,shift,alt",
+ },
+ {
+ id: "profilerCaptureAlternate",
+ shortcut: getLocalizedKeyShortcut("devtools-commandkey-profiler-capture"),
+ modifiers: "control,shift,alt",
+ },
+ ];
+}
+
+/**
+ * Validate the URL that will be used for the WebChannel for the profiler.
+ *
+ * @param {string} targetUrl
+ * @returns {string}
+ */
+export function validateProfilerWebChannelUrl(targetUrl) {
+ const frontEndUrl = "https://profiler.firefox.com";
+
+ if (targetUrl !== frontEndUrl) {
+ // The user can specify either localhost or deploy previews as well as
+ // the official frontend URL for testing.
+ if (
+ // Allow a test URL.
+ /^https?:\/\/example\.com$/.test(targetUrl) ||
+ // Allows the following:
+ // "http://localhost:4242"
+ // "http://localhost:4242/"
+ // "http://localhost:3"
+ // "http://localhost:334798455"
+ /^http:\/\/localhost:\d+\/?$/.test(targetUrl) ||
+ // Allows the following:
+ // "https://deploy-preview-1234--perf-html.netlify.com"
+ // "https://deploy-preview-1234--perf-html.netlify.com/"
+ // "https://deploy-preview-1234567--perf-html.netlify.app"
+ // "https://main--perf-html.netlify.app"
+ /^https:\/\/(?:deploy-preview-\d+|main)--perf-html\.netlify\.(?:com|app)\/?$/.test(
+ targetUrl
+ )
+ ) {
+ // This URL is one of the allowed ones to be used for configuration.
+ return targetUrl;
+ }
+
+ console.error(
+ `The preference "devtools.performance.recording.ui-base-url" was set to a ` +
+ "URL that is not allowed. No WebChannel messages will be sent between the " +
+ `browser and that URL. Falling back to ${frontEndUrl}. Only localhost ` +
+ "and deploy previews URLs are allowed.",
+ targetUrl
+ );
+ }
+
+ return frontEndUrl;
+}
+
+ChromeUtils.defineLazyGetter(lazy, "ProfilerPopupBackground", function () {
+ return ChromeUtils.importESModule(
+ "resource://devtools/client/performance-new/shared/background.sys.mjs"
+ );
+});
+
+export function DevToolsStartup() {
+ this.onWindowReady = this.onWindowReady.bind(this);
+ this.addDevToolsItemsToSubview = this.addDevToolsItemsToSubview.bind(this);
+ this.onMoreToolsViewShowing = this.onMoreToolsViewShowing.bind(this);
+ this.toggleProfilerKeyShortcuts = this.toggleProfilerKeyShortcuts.bind(this);
+}
+
+DevToolsStartup.prototype = {
+ /**
+ * Boolean flag to check if DevTools have been already initialized or not.
+ * By initialized, we mean that its main modules are loaded.
+ */
+ initialized: false,
+
+ /**
+ * Boolean flag to check if the devtools initialization was already sent to telemetry.
+ * We only want to record one devtools entry point per Firefox run, but we are not
+ * interested in all the entry points.
+ */
+ recorded: false,
+
+ get telemetry() {
+ if (!this._telemetry) {
+ this._telemetry = new lazy.Telemetry();
+ this._telemetry.setEventRecordingEnabled(true);
+ }
+ return this._telemetry;
+ },
+
+ /**
+ * Flag that indicates if the developer toggle was already added to customizableUI.
+ */
+ developerToggleCreated: false,
+
+ /**
+ * Flag that indicates if the profiler recording popup was already added to
+ * customizableUI.
+ */
+ profilerRecordingButtonCreated: false,
+
+ isDisabledByPolicy() {
+ return Services.prefs.getBoolPref(DEVTOOLS_POLICY_DISABLED_PREF, false);
+ },
+
+ handle(cmdLine) {
+ const flags = this.readCommandLineFlags(cmdLine);
+
+ // handle() can be called after browser startup (e.g. opening links from other apps).
+ const isInitialLaunch =
+ cmdLine.state == Ci.nsICommandLine.STATE_INITIAL_LAUNCH;
+ if (isInitialLaunch) {
+ // Store devtoolsFlag to check it later in onWindowReady.
+ this.devtoolsFlag = flags.devtools;
+
+ /* eslint-disable mozilla/balanced-observers */
+ // We are not expecting to remove those listeners until Firefox closes.
+
+ // Only top level Firefox Windows fire a browser-delayed-startup-finished event
+ Services.obs.addObserver(
+ this.onWindowReady,
+ "browser-delayed-startup-finished"
+ );
+
+ // Add DevTools menu items to the "More Tools" view.
+ Services.obs.addObserver(
+ this.onMoreToolsViewShowing,
+ "web-developer-tools-view-showing"
+ );
+ /* eslint-enable mozilla/balanced-observers */
+
+ if (!this.isDisabledByPolicy()) {
+ if (AppConstants.MOZ_DEV_EDITION) {
+ // On DevEdition, the developer toggle is displayed by default in the navbar
+ // area and should be created before the first paint.
+ this.hookDeveloperToggle();
+ }
+
+ this.hookProfilerRecordingButton();
+ }
+ }
+
+ if (flags.console) {
+ this.commandLine = true;
+ this.handleConsoleFlag(cmdLine);
+ }
+ if (flags.debugger) {
+ this.commandLine = true;
+ const binaryPath =
+ typeof flags.debugger == "string" ? flags.debugger : null;
+ this.handleDebuggerFlag(cmdLine, binaryPath);
+ }
+
+ if (flags.devToolsServer) {
+ this.handleDevToolsServerFlag(cmdLine, flags.devToolsServer);
+ }
+
+ // If Firefox is already opened, and DevTools are also already opened,
+ // try to open links passed via command line arguments.
+ if (!isInitialLaunch && this.initialized && cmdLine.length) {
+ this.checkForDebuggerLink(cmdLine);
+ }
+ },
+
+ /**
+ * Lookup in all arguments passed to firefox binary to find
+ * URLs including a precise location, like this:
+ * https://domain.com/file.js:1:10 (URL ending with `:${line}:${number}`)
+ * When such argument exists, try to open this source and precise location
+ * in the debugger.
+ *
+ * @param {nsICommandLine} cmdLine
+ */
+ checkForDebuggerLink(cmdLine) {
+ const urlFlagIdx = cmdLine.findFlag("url", false);
+ // Bail out when there is no -url argument, or if that's last and so there is no URL after it.
+ if (urlFlagIdx == -1 && urlFlagIdx + 1 < cmdLine.length) {
+ return;
+ }
+
+ // The following code would only work if we have a top level browser window opened
+ const window = Services.wm.getMostRecentWindow("navigator:browser");
+ if (!window) {
+ return;
+ }
+
+ const urlParam = cmdLine.getArgument(urlFlagIdx + 1);
+
+ // Avoid processing valid url like:
+ // http://foo@user:123
+ // Note that when loading `http://foo.com` the URL of the default html page will be `http://foo.com/`.
+ // So that there will always be another `/` after `https://`
+ if (
+ (urlParam.startsWith("http://") || urlParam.startsWith("https://")) &&
+ urlParam.lastIndexOf("/") <= 7
+ ) {
+ return;
+ }
+
+ let match = urlParam.match(/^(?<url>\w+:.+):(?<line>\d+):(?<column>\d+)$/);
+ if (!match) {
+ // fallback on only having the line when there is no column
+ match = urlParam.match(/^(?<url>\w+:.+):(?<line>\d+)?$/);
+ if (!match) {
+ return;
+ }
+ }
+
+ // line and column are supposed to be 1-based.
+ const { url, line, column } = match.groups;
+
+ // Debugger internal uses 0-based column number.
+ // NOTE: Non-debugger view-source doesn't use column number.
+ const columnOneBased = parseInt(column || 0, 10);
+ const columnZeroBased = columnOneBased > 0 ? columnOneBased - 1 : 0;
+
+ // If for any reason the final url is invalid, ignore it
+ try {
+ Services.io.newURI(url);
+ } catch (e) {
+ return;
+ }
+
+ const require = this.initDevTools("CommandLine");
+ const { gDevTools } = require("devtools/client/framework/devtools");
+ const toolbox = gDevTools.getToolboxForTab(window.gBrowser.selectedTab);
+ // Ignore the url if there is no devtools currently opened for the current tab
+ if (!toolbox) {
+ return;
+ }
+
+ // Avoid regular Firefox code from processing this argument,
+ // otherwise we would open the source in DevTools and in a new tab.
+ //
+ // /!\ This has to be called synchronously from the call to `DevToolsStartup.handle(cmdLine)`
+ // Otherwise the next command lines listener will interpret the argument redundantly.
+ cmdLine.removeArguments(urlFlagIdx, urlFlagIdx + 1);
+
+ // Avoid opening a new empty top level window if there is no more arguments
+ if (!cmdLine.length) {
+ cmdLine.preventDefault = true;
+ }
+
+ // Immediately focus the browser window in order, to focus devtools, or the view-source tab.
+ // Otherwise, without this, the terminal would still be the topmost window.
+ toolbox.win.focus();
+
+ // Note that the following method is async and returns a promise.
+ // But the current method has to be synchronous because of cmdLine.removeArguments.
+ // Also note that it will fallback to view-source when the source url isn't found in the debugger
+ toolbox.viewSourceInDebugger(
+ url,
+ parseInt(line, 10),
+ columnZeroBased,
+ null,
+ "CommandLine"
+ );
+ },
+
+ readCommandLineFlags(cmdLine) {
+ // All command line flags are disabled if DevTools are disabled by policy.
+ if (this.isDisabledByPolicy()) {
+ return {
+ console: false,
+ debugger: false,
+ devtools: false,
+ devToolsServer: false,
+ };
+ }
+
+ const console = cmdLine.handleFlag("jsconsole", false);
+ const devtools = cmdLine.handleFlag("devtools", false);
+
+ let devToolsServer;
+ try {
+ devToolsServer = cmdLine.handleFlagWithParam(
+ "start-debugger-server",
+ false
+ );
+ } catch (e) {
+ // We get an error if the option is given but not followed by a value.
+ // By catching and trying again, the value is effectively optional.
+ devToolsServer = cmdLine.handleFlag("start-debugger-server", false);
+ }
+
+ let debuggerFlag;
+ try {
+ debuggerFlag = cmdLine.handleFlagWithParam("jsdebugger", false);
+ } catch (e) {
+ // We get an error if the option is given but not followed by a value.
+ // By catching and trying again, the value is effectively optional.
+ debuggerFlag = cmdLine.handleFlag("jsdebugger", false);
+ }
+
+ return { console, debugger: debuggerFlag, devtools, devToolsServer };
+ },
+
+ /**
+ * Called when receiving the "browser-delayed-startup-finished" event for a new
+ * top-level window.
+ */
+ onWindowReady(window) {
+ if (
+ this.isDisabledByPolicy() ||
+ AppConstants.MOZ_APP_NAME == "thunderbird"
+ ) {
+ return;
+ }
+
+ this.hookWindow(window);
+
+ // This listener is called for all Firefox windows, but we want to execute some code
+ // only once.
+ if (!this._firstWindowReadyReceived) {
+ this.onFirstWindowReady(window);
+ this._firstWindowReadyReceived = true;
+ }
+
+ JsonView.initialize();
+ },
+
+ onFirstWindowReady(window) {
+ if (this.devtoolsFlag) {
+ this.handleDevToolsFlag(window);
+
+ // In the case of the --jsconsole and --jsdebugger command line parameters
+ // there was no browser window when they were processed so we act on the
+ // this.commandline flag instead.
+ if (this.commandLine) {
+ this.sendEntryPointTelemetry("CommandLine");
+ }
+ }
+ this.setSlowScriptDebugHandler();
+ },
+
+ /**
+ * Register listeners to all possible entry points for Developer Tools.
+ * But instead of implementing the actual actions, defer to DevTools codebase.
+ * In most cases, it only needs to call this.initDevTools which handles the rest.
+ * We do that to prevent loading any DevTools module until the user intent to use them.
+ */
+ hookWindow(window) {
+ // Key Shortcuts need to be added on all the created windows.
+ this.hookKeyShortcuts(window);
+
+ // In some situations (e.g. starting Firefox with --jsconsole) DevTools will be
+ // initialized before the first browser-delayed-startup-finished event is received.
+ // We use a dedicated flag because we still need to hook the developer toggle.
+ this.hookDeveloperToggle();
+ this.hookProfilerRecordingButton();
+
+ // The developer menu hook only needs to be added if devtools have not been
+ // initialized yet.
+ if (!this.initialized) {
+ this.hookBrowserToolsMenu(window);
+ }
+ },
+
+ /**
+ * Dynamically register a wrench icon in the customization menu.
+ * You can use this button by right clicking on Firefox toolbar
+ * and dragging it from the customization panel to the toolbar.
+ * (i.e. this isn't displayed by default to users!)
+ *
+ * _But_, the "Browser Tools" entry in the hamburger menu (the menu with
+ * 3 horizontal lines), is using this "developer-button" view to populate
+ * its menu. So we have to register this button for the menu to work.
+ *
+ * Also, this menu duplicates its own entries from the "Browser Tools"
+ * menu in the system menu, under "Tools" main menu item. The system
+ * menu is being hooked by "hookBrowserToolsMenu" which ends up calling
+ * devtools/client/framework/browser-menus to create the items for real,
+ * initDevTools, from onViewShowing is also calling browser-menu.
+ */
+ hookDeveloperToggle() {
+ if (this.developerToggleCreated) {
+ return;
+ }
+
+ const id = "developer-button";
+ const widget = lazy.CustomizableUI.getWidget(id);
+ if (widget && widget.provider == lazy.CustomizableUI.PROVIDER_API) {
+ return;
+ }
+
+ const panelviewId = "PanelUI-developer-tools";
+ const subviewId = "PanelUI-developer-tools-view";
+
+ const item = {
+ id,
+ type: "view",
+ viewId: panelviewId,
+ shortcutId: "key_toggleToolbox",
+ tooltiptext: "developer-button.tooltiptext2",
+ onViewShowing: event => {
+ const doc = event.target.ownerDocument;
+ const developerItems = lazy.PanelMultiView.getViewNode(doc, subviewId);
+ this.addDevToolsItemsToSubview(developerItems);
+ },
+ onInit(anchor) {
+ // Since onBeforeCreated already bails out when initialized, we can call
+ // it right away.
+ this.onBeforeCreated(anchor.ownerDocument);
+ },
+ onBeforeCreated: doc => {
+ // The developer toggle needs the "key_toggleToolbox" <key> element.
+ // In DEV EDITION, the toggle is added before 1st paint and hookKeyShortcuts() is
+ // not called yet when CustomizableUI creates the widget.
+ this.hookKeyShortcuts(doc.defaultView);
+ },
+ };
+ lazy.CustomizableUI.createWidget(item);
+ lazy.CustomizableWidgets.push(item);
+
+ this.developerToggleCreated = true;
+ },
+
+ addDevToolsItemsToSubview(subview) {
+ // Initialize DevTools to create all menuitems in the system menu before
+ // trying to copy them.
+ this.initDevTools("HamburgerMenu");
+
+ // Populate the subview with whatever menuitems are in the developer
+ // menu. We skip menu elements, because the menu panel has no way
+ // of dealing with those right now.
+ const doc = subview.ownerDocument;
+ const menu = doc.getElementById("menuWebDeveloperPopup");
+ const itemsToDisplay = [...menu.children];
+
+ lazy.CustomizableUI.clearSubview(subview);
+ lazy.CustomizableUI.fillSubviewFromMenuItems(itemsToDisplay, subview);
+ },
+
+ onMoreToolsViewShowing(moreToolsView) {
+ this.addDevToolsItemsToSubview(moreToolsView);
+ },
+
+ /**
+ * Register the profiler recording button. This button will be available
+ * in the customization palette for the Firefox toolbar. In addition, it can be
+ * enabled from profiler.firefox.com.
+ */
+ hookProfilerRecordingButton() {
+ if (this.profilerRecordingButtonCreated) {
+ return;
+ }
+ const featureFlagPref = "devtools.performance.popup.feature-flag";
+ const isPopupFeatureFlagEnabled =
+ Services.prefs.getBoolPref(featureFlagPref);
+ this.profilerRecordingButtonCreated = true;
+
+ // Listen for messages from the front-end. This needs to happen even if the
+ // button isn't enabled yet. This will allow the front-end to turn on the
+ // popup for our users, regardless of if the feature is enabled by default.
+ this.initializeProfilerWebChannel();
+
+ if (isPopupFeatureFlagEnabled) {
+ // Initialize the CustomizableUI widget.
+ lazy.ProfilerMenuButton.initialize(this.toggleProfilerKeyShortcuts);
+ } else {
+ // The feature flag is not enabled, but watch for it to be enabled. If it is,
+ // initialize everything.
+ const enable = () => {
+ lazy.ProfilerMenuButton.initialize(this.toggleProfilerKeyShortcuts);
+ Services.prefs.removeObserver(featureFlagPref, enable);
+ };
+ Services.prefs.addObserver(featureFlagPref, enable);
+ }
+ },
+
+ /**
+ * Initialize the WebChannel for profiler.firefox.com. This function happens at
+ * startup, so care should be taken to minimize its performance impact. The WebChannel
+ * is a mechanism that is used to communicate between the browser, and front-end code.
+ */
+ initializeProfilerWebChannel() {
+ let channel;
+
+ // Register a channel for the URL in preferences. Also update the WebChannel if
+ // the URL changes.
+ const urlPref = "devtools.performance.recording.ui-base-url";
+
+ // This method is only run once per Firefox instance, so it should not be
+ // strictly necessary to remove observers here.
+ // eslint-disable-next-line mozilla/balanced-observers
+ Services.prefs.addObserver(urlPref, registerWebChannel);
+
+ registerWebChannel();
+
+ function registerWebChannel() {
+ if (channel) {
+ channel.stopListening();
+ }
+
+ const urlForWebChannel = Services.io.newURI(
+ validateProfilerWebChannelUrl(Services.prefs.getStringPref(urlPref))
+ );
+
+ channel = new lazy.WebChannel("profiler.firefox.com", urlForWebChannel);
+
+ channel.listen((id, message, target) => {
+ // Defer loading the ProfilerPopupBackground script until it's absolutely needed,
+ // as this code path gets loaded at startup.
+ lazy.ProfilerPopupBackground.handleWebChannelMessage(
+ channel,
+ id,
+ message,
+ target
+ );
+ });
+ }
+ },
+
+ /*
+ * We listen to the "Browser Tools" system menu, which is under "Tools" main item.
+ * This menu item is hardcoded empty in Firefox UI. We listen for its opening to
+ * populate it lazily. Loading main DevTools module is going to populate it.
+ */
+ hookBrowserToolsMenu(window) {
+ const menu = window.document.getElementById("browserToolsMenu");
+ const onPopupShowing = () => {
+ menu.removeEventListener("popupshowing", onPopupShowing);
+ this.initDevTools("SystemMenu");
+ };
+ menu.addEventListener("popupshowing", onPopupShowing);
+ },
+
+ /**
+ * Check if the user is a DevTools user by looking at our selfxss pref.
+ * This preference is incremented everytime the console is used (up to 5).
+ *
+ * @return {Boolean} true if the user can be considered as a devtools user.
+ */
+ isDevToolsUser() {
+ const selfXssCount = Services.prefs.getIntPref("devtools.selfxss.count", 0);
+ return selfXssCount > 0;
+ },
+
+ hookKeyShortcuts(window) {
+ const doc = window.document;
+
+ // hookKeyShortcuts can be called both from hookWindow and from the developer toggle
+ // onBeforeCreated. Make sure shortcuts are only added once per window.
+ if (doc.getElementById("devtoolsKeyset")) {
+ return;
+ }
+
+ const keyset = doc.createXULElement("keyset");
+ keyset.setAttribute("id", "devtoolsKeyset");
+
+ this.attachKeys(doc, lazy.KeyShortcuts, keyset);
+
+ // Appending a <key> element is not always enough. The <keyset> needs
+ // to be detached and reattached to make sure the <key> is taken into
+ // account (see bug 832984).
+ const mainKeyset = doc.getElementById("mainKeyset");
+ mainKeyset.parentNode.insertBefore(keyset, mainKeyset);
+ },
+
+ /**
+ * This method attaches on the key elements to the devtools keyset.
+ */
+ attachKeys(doc, keyShortcuts, keyset = doc.getElementById("devtoolsKeyset")) {
+ const window = doc.defaultView;
+ for (const key of keyShortcuts) {
+ if (!key.shortcut) {
+ // Shortcuts might be missing when a user relies on a language packs
+ // which is missing a recently uplifted shortcut. Language packs are
+ // typically updated a few days after a code uplift.
+ continue;
+ }
+ const xulKey = this.createKey(doc, key, () => this.onKey(window, key));
+ keyset.appendChild(xulKey);
+ }
+ },
+
+ /**
+ * This method removes keys from the devtools keyset.
+ */
+ removeKeys(doc, keyShortcuts) {
+ for (const key of keyShortcuts) {
+ const keyElement = doc.getElementById(this.getKeyElementId(key));
+ if (keyElement) {
+ keyElement.remove();
+ }
+ }
+ },
+
+ /**
+ * We only want to have the keyboard shortcuts active when the menu button is on.
+ * This function either adds or removes the elements.
+ * @param {boolean} isEnabled
+ */
+ toggleProfilerKeyShortcuts(isEnabled) {
+ const profilerKeyShortcuts = getProfilerKeyShortcuts();
+ for (const { document } of Services.wm.getEnumerator(null)) {
+ const devtoolsKeyset = document.getElementById("devtoolsKeyset");
+ const mainKeyset = document.getElementById("mainKeyset");
+
+ if (!devtoolsKeyset || !mainKeyset) {
+ // There may not be devtools keyset on this window.
+ continue;
+ }
+
+ const areProfilerKeysPresent = !!document.getElementById(
+ "key_profilerStartStop"
+ );
+ if (isEnabled === areProfilerKeysPresent) {
+ // Don't double add or double remove the shortcuts.
+ continue;
+ }
+ if (isEnabled) {
+ this.attachKeys(document, profilerKeyShortcuts);
+ } else {
+ this.removeKeys(document, profilerKeyShortcuts);
+ }
+ // Appending a <key> element is not always enough. The <keyset> needs
+ // to be detached and reattached to make sure the <key> is taken into
+ // account (see bug 832984).
+ mainKeyset.parentNode.insertBefore(devtoolsKeyset, mainKeyset);
+ }
+ },
+
+ async onKey(window, key) {
+ try {
+ // The profiler doesn't care if DevTools is loaded, so provide a quick check
+ // first to bail out of checking if DevTools is available.
+ switch (key.id) {
+ case "profilerStartStop":
+ case "profilerStartStopAlternate": {
+ lazy.ProfilerPopupBackground.toggleProfiler("aboutprofiling");
+ return;
+ }
+ case "profilerCapture":
+ case "profilerCaptureAlternate": {
+ lazy.ProfilerPopupBackground.captureProfile("aboutprofiling");
+ return;
+ }
+ }
+
+ // Ignore the following key shortcut if DevTools aren't yet opened.
+ // The key shortcut is registered in this core component in order to
+ // work even when the web page is focused.
+ if (key.id == "javascriptTracingToggle" && !this.initialized) {
+ return;
+ }
+
+ // Record the timing at which this event started in order to compute later in
+ // gDevTools.showToolbox, the complete time it takes to open the toolbox.
+ // i.e. especially take `initDevTools` into account.
+ const startTime = Cu.now();
+ const require = this.initDevTools("KeyShortcut", key);
+ const {
+ gDevToolsBrowser,
+ } = require("devtools/client/framework/devtools-browser");
+ await gDevToolsBrowser.onKeyShortcut(window, key, startTime);
+ } catch (e) {
+ console.error(`Exception while trigerring key ${key}: ${e}\n${e.stack}`);
+ }
+ },
+
+ getKeyElementId({ id, toolId }) {
+ return "key_" + (id || toolId);
+ },
+
+ // Create a <xul:key> DOM Element
+ createKey(doc, key, oncommand) {
+ const { shortcut, modifiers: mod } = key;
+ const k = doc.createXULElement("key");
+ k.id = this.getKeyElementId(key);
+
+ if (shortcut.startsWith("VK_")) {
+ k.setAttribute("keycode", shortcut);
+ if (shortcut.match(/^VK_\d$/)) {
+ // Add the event keydown attribute to ensure that shortcuts work for combinations
+ // such as ctrl shift 1.
+ k.setAttribute("event", "keydown");
+ }
+ } else {
+ k.setAttribute("key", shortcut);
+ }
+
+ if (mod) {
+ k.setAttribute("modifiers", mod);
+ }
+
+ k.addEventListener("command", oncommand);
+
+ return k;
+ },
+
+ initDevTools(reason, key = "") {
+ // In the case of the --jsconsole and --jsdebugger command line parameters
+ // there is no browser window yet so we don't send any telemetry yet.
+ if (reason !== "CommandLine") {
+ this.sendEntryPointTelemetry(reason, key);
+ }
+
+ this.initialized = true;
+ const { require } = ChromeUtils.importESModule(
+ "resource://devtools/shared/loader/Loader.sys.mjs"
+ );
+ // Ensure loading main devtools module that hooks up into browser UI
+ // and initialize all devtools machinery.
+ // eslint-disable-next-line import/no-unassigned-import
+ require("devtools/client/framework/devtools-browser");
+ return require;
+ },
+
+ handleConsoleFlag(cmdLine) {
+ const window = Services.wm.getMostRecentWindow("devtools:webconsole");
+ if (!window) {
+ const require = this.initDevTools("CommandLine");
+ const {
+ BrowserConsoleManager,
+ } = require("devtools/client/webconsole/browser-console-manager");
+ BrowserConsoleManager.toggleBrowserConsole().catch(console.error);
+ } else {
+ // the Browser Console was already open
+ window.focus();
+ }
+
+ if (cmdLine.state == Ci.nsICommandLine.STATE_REMOTE_AUTO) {
+ cmdLine.preventDefault = true;
+ }
+ },
+
+ // Open the toolbox on the selected tab once the browser starts up.
+ async handleDevToolsFlag(window) {
+ const require = this.initDevTools("CommandLine");
+ const { gDevTools } = require("devtools/client/framework/devtools");
+ await gDevTools.showToolboxForTab(window.gBrowser.selectedTab);
+ },
+
+ _isRemoteDebuggingEnabled() {
+ let remoteDebuggingEnabled = false;
+ try {
+ remoteDebuggingEnabled = kDebuggerPrefs.every(pref => {
+ return Services.prefs.getBoolPref(pref);
+ });
+ } catch (ex) {
+ console.error(ex);
+ return false;
+ }
+ if (!remoteDebuggingEnabled) {
+ const errorMsg =
+ "Could not run chrome debugger! You need the following " +
+ "prefs to be set to true: " +
+ kDebuggerPrefs.join(", ");
+ console.error(new Error(errorMsg));
+ // Dump as well, as we're doing this from a commandline, make sure people
+ // don't miss it:
+ dump(errorMsg + "\n");
+ }
+ return remoteDebuggingEnabled;
+ },
+
+ handleDebuggerFlag(cmdLine, binaryPath) {
+ if (!this._isRemoteDebuggingEnabled()) {
+ return;
+ }
+
+ let devtoolsThreadResumed = false;
+ const pauseOnStartup = cmdLine.handleFlag("wait-for-jsdebugger", false);
+ if (pauseOnStartup) {
+ const observe = function (subject, topic, data) {
+ devtoolsThreadResumed = true;
+ Services.obs.removeObserver(observe, "devtools-thread-ready");
+ };
+ Services.obs.addObserver(observe, "devtools-thread-ready");
+ }
+
+ const { BrowserToolboxLauncher } = ChromeUtils.importESModule(
+ "resource://devtools/client/framework/browser-toolbox/Launcher.sys.mjs"
+ );
+ // --jsdebugger $binaryPath is an helper alias to set MOZ_BROWSER_TOOLBOX_BINARY=$binaryPath
+ // See comment within BrowserToolboxLauncher.
+ // Setting it as an environment variable helps it being reused if we restart the browser via CmdOrCtrl+R
+ Services.env.set("MOZ_BROWSER_TOOLBOX_BINARY", binaryPath);
+
+ const browserToolboxLauncherConfig = {};
+
+ // If user passed the --jsdebugger in mochitests, we want to enable the
+ // multiprocess Browser Toolbox (by default it's parent process only)
+ if (Services.prefs.getBoolPref("devtools.testing", false)) {
+ browserToolboxLauncherConfig.forceMultiprocess = true;
+ }
+ BrowserToolboxLauncher.init(browserToolboxLauncherConfig);
+
+ if (pauseOnStartup) {
+ // Spin the event loop until the debugger connects.
+ const tm = Cc["@mozilla.org/thread-manager;1"].getService();
+ tm.spinEventLoopUntil("DevToolsStartup.jsm:handleDebuggerFlag", () => {
+ return devtoolsThreadResumed;
+ });
+ }
+
+ if (cmdLine.state == Ci.nsICommandLine.STATE_REMOTE_AUTO) {
+ cmdLine.preventDefault = true;
+ }
+ },
+
+ /**
+ * Handle the --start-debugger-server command line flag. The options are:
+ * --start-debugger-server
+ * The portOrPath parameter is boolean true in this case. Reads and uses the defaults
+ * from devtools.debugger.remote-port and devtools.debugger.remote-websocket prefs.
+ * The default values of these prefs are port 6000, WebSocket disabled.
+ *
+ * --start-debugger-server 6789
+ * Start the non-WebSocket server on port 6789.
+ *
+ * --start-debugger-server /path/to/filename
+ * Start the server on a Unix domain socket.
+ *
+ * --start-debugger-server ws:6789
+ * Start the WebSocket server on port 6789.
+ *
+ * --start-debugger-server ws:
+ * Start the WebSocket server on the default port (taken from d.d.remote-port)
+ */
+ handleDevToolsServerFlag(cmdLine, portOrPath) {
+ if (!this._isRemoteDebuggingEnabled()) {
+ return;
+ }
+
+ let webSocket = false;
+ const defaultPort = Services.prefs.getIntPref(
+ "devtools.debugger.remote-port"
+ );
+ if (portOrPath === true) {
+ // Default to pref values if no values given on command line
+ webSocket = Services.prefs.getBoolPref(
+ "devtools.debugger.remote-websocket"
+ );
+ portOrPath = defaultPort;
+ } else if (portOrPath.startsWith("ws:")) {
+ webSocket = true;
+ const port = portOrPath.slice(3);
+ portOrPath = Number(port) ? port : defaultPort;
+ }
+
+ const {
+ useDistinctSystemPrincipalLoader,
+ releaseDistinctSystemPrincipalLoader,
+ } = ChromeUtils.importESModule(
+ "resource://devtools/shared/loader/DistinctSystemPrincipalLoader.sys.mjs"
+ );
+
+ try {
+ // Create a separate loader instance, so that we can be sure to receive
+ // a separate instance of the DebuggingServer from the rest of the
+ // devtools. This allows us to safely use the tools against even the
+ // actors and DebuggingServer itself, especially since we can mark
+ // serverLoader as invisible to the debugger (unlike the usual loader
+ // settings).
+ const serverLoader = useDistinctSystemPrincipalLoader(this);
+ const { DevToolsServer: devToolsServer } = serverLoader.require(
+ "resource://devtools/server/devtools-server.js"
+ );
+ const { SocketListener } = serverLoader.require(
+ "resource://devtools/shared/security/socket.js"
+ );
+ devToolsServer.init();
+
+ // Force the server to be kept running when the last connection closes.
+ // So that another client can connect after the previous one is disconnected.
+ devToolsServer.keepAlive = true;
+
+ devToolsServer.registerAllActors();
+ devToolsServer.allowChromeProcess = true;
+ const socketOptions = { portOrPath, webSocket };
+
+ const listener = new SocketListener(devToolsServer, socketOptions);
+ listener.open();
+ dump("Started devtools server on " + portOrPath + "\n");
+
+ // Prevent leaks on shutdown.
+ const close = () => {
+ Services.obs.removeObserver(close, "quit-application");
+ dump("Stopped devtools server on " + portOrPath + "\n");
+ if (listener) {
+ listener.close();
+ }
+ if (devToolsServer) {
+ devToolsServer.destroy();
+ }
+ releaseDistinctSystemPrincipalLoader(this);
+ };
+ Services.obs.addObserver(close, "quit-application");
+ } catch (e) {
+ dump("Unable to start devtools server on " + portOrPath + ": " + e);
+ }
+
+ if (cmdLine.state == Ci.nsICommandLine.STATE_REMOTE_AUTO) {
+ cmdLine.preventDefault = true;
+ }
+ },
+
+ /**
+ * Send entry point telemetry explaining how the devtools were launched. This
+ * functionality also lives inside `devtools/client/framework/browser-menus.js`
+ * because this codepath is only used the first time a toolbox is opened for a
+ * tab.
+ *
+ * @param {String} reason
+ * One of "KeyShortcut", "SystemMenu", "HamburgerMenu", "ContextMenu",
+ * "CommandLine".
+ * @param {String} key
+ * The key used by a key shortcut.
+ */
+ sendEntryPointTelemetry(reason, key = "") {
+ if (!reason) {
+ return;
+ }
+
+ let keys = "";
+
+ if (reason === "KeyShortcut") {
+ let { modifiers, shortcut } = key;
+
+ modifiers = modifiers.replace(",", "+");
+
+ if (shortcut.startsWith("VK_")) {
+ shortcut = shortcut.substr(3);
+ }
+
+ keys = `${modifiers}+${shortcut}`;
+ }
+
+ const window = Services.wm.getMostRecentWindow("navigator:browser");
+
+ this.telemetry.addEventProperty(
+ window,
+ "open",
+ "tools",
+ null,
+ "shortcut",
+ keys
+ );
+ this.telemetry.addEventProperty(
+ window,
+ "open",
+ "tools",
+ null,
+ "entrypoint",
+ reason
+ );
+
+ if (this.recorded) {
+ return;
+ }
+
+ // Only save the first call for each firefox run as next call
+ // won't necessarely start the tool. For example key shortcuts may
+ // only change the currently selected tool.
+ try {
+ this.telemetry.getHistogramById("DEVTOOLS_ENTRY_POINT").add(reason);
+ } catch (e) {
+ dump("DevTools telemetry entry point failed: " + e + "\n");
+ }
+ this.recorded = true;
+ },
+
+ /**
+ * Hook the debugger tool to the "Debug Script" button of the slow script dialog.
+ */
+ setSlowScriptDebugHandler() {
+ const debugService = Cc["@mozilla.org/dom/slow-script-debug;1"].getService(
+ Ci.nsISlowScriptDebug
+ );
+
+ debugService.activationHandler = window => {
+ const chromeWindow = window.browsingContext.topChromeWindow;
+
+ let setupFinished = false;
+ this.slowScriptDebugHandler(chromeWindow.gBrowser.selectedTab).then(
+ () => {
+ setupFinished = true;
+ }
+ );
+
+ // Don't return from the interrupt handler until the debugger is brought
+ // up; no reason to continue executing the slow script.
+ const utils = window.windowUtils;
+ utils.enterModalState();
+ Services.tm.spinEventLoopUntil(
+ "devtools-browser.js:debugService.activationHandler",
+ () => {
+ return setupFinished;
+ }
+ );
+ utils.leaveModalState();
+ };
+
+ debugService.remoteActivationHandler = async (browser, callback) => {
+ try {
+ // Force selecting the freezing tab
+ const chromeWindow = browser.ownerGlobal;
+ const tab = chromeWindow.gBrowser.getTabForBrowser(browser);
+ chromeWindow.gBrowser.selectedTab = tab;
+
+ await this.slowScriptDebugHandler(tab);
+ } catch (e) {
+ console.error(e);
+ }
+ callback.finishDebuggerStartup();
+ };
+ },
+
+ /**
+ * Called by setSlowScriptDebugHandler, when a tab freeze because of a slow running script
+ */
+ async slowScriptDebugHandler(tab) {
+ const require = this.initDevTools("SlowScript");
+ const { gDevTools } = require("devtools/client/framework/devtools");
+ const toolbox = await gDevTools.showToolboxForTab(tab, {
+ toolId: "jsdebugger",
+ });
+ const threadFront = toolbox.threadFront;
+
+ // Break in place, which means resuming the debuggee thread and pausing
+ // right before the next step happens.
+ switch (threadFront.state) {
+ case "paused":
+ // When the debugger is already paused.
+ threadFront.resumeThenPause();
+ break;
+ case "attached":
+ // When the debugger is already open.
+ const onPaused = threadFront.once("paused");
+ threadFront.interrupt();
+ await onPaused;
+ threadFront.resumeThenPause();
+ break;
+ case "resuming":
+ // The debugger is newly opened.
+ const onResumed = threadFront.once("resumed");
+ await threadFront.interrupt();
+ await onResumed;
+ threadFront.resumeThenPause();
+ break;
+ default:
+ throw Error(
+ "invalid thread front state in slow script debug handler: " +
+ threadFront.state
+ );
+ }
+ },
+
+ // Used by tests and the toolbox to register the same key shortcuts in toolboxes loaded
+ // in a window window.
+ get KeyShortcuts() {
+ return lazy.KeyShortcuts;
+ },
+ get wrappedJSObject() {
+ return this;
+ },
+
+ get jsdebuggerHelpInfo() {
+ return ` --jsdebugger [<path>] Open the Browser Toolbox. Defaults to the local build
+ but can be overridden by a firefox path.
+ --wait-for-jsdebugger Spin event loop until JS debugger connects.
+ Enables debugging (some) application startup code paths.
+ Only has an effect when \`--jsdebugger\` is also supplied.
+ --start-debugger-server [ws:][ <port> | <path> ] Start the devtools server on
+ a TCP port or Unix domain socket path. Defaults to TCP port
+ 6000. Use WebSocket protocol if ws: prefix is specified.
+`;
+ },
+
+ get helpInfo() {
+ return ` --jsconsole Open the Browser Console.
+ --devtools Open DevTools on initial load.
+${this.jsdebuggerHelpInfo}`;
+ },
+
+ classID: Components.ID("{9e9a9283-0ce9-4e4a-8f1c-ba129a032c32}"),
+ QueryInterface: ChromeUtils.generateQI(["nsICommandLineHandler"]),
+};
+
+/**
+ * Singleton object that represents the JSON View in-content tool.
+ * It has the same lifetime as the browser.
+ */
+const JsonView = {
+ initialized: false,
+
+ initialize() {
+ // Prevent loading the frame script multiple times if we call this more than once.
+ if (this.initialized) {
+ return;
+ }
+ this.initialized = true;
+
+ // Register for messages coming from the child process.
+ // This is never removed as there is no particular need to unregister
+ // it during shutdown.
+ Services.mm.addMessageListener("devtools:jsonview:save", this.onSave);
+ },
+
+ // Message handlers for events from child processes
+
+ /**
+ * Save JSON to a file needs to be implemented here
+ * in the parent process.
+ */
+ onSave(message) {
+ const browser = message.target;
+ const chrome = browser.ownerGlobal;
+ if (message.data === null) {
+ // Save original contents
+ chrome.saveBrowser(browser);
+ } else {
+ if (
+ !message.data.startsWith("blob:resource://devtools/") ||
+ browser.contentPrincipal.origin != "resource://devtools"
+ ) {
+ console.error("Got invalid request to save JSON data");
+ return;
+ }
+ // The following code emulates saveBrowser, but:
+ // - Uses the given blob URL containing the custom contents to save.
+ // - Obtains the file name from the URL of the document, not the blob.
+ // - avoids passing the document and explicitly passes system principal.
+ // We have a blob created by a null principal to save, and the null
+ // principal is from the child. Null principals don't survive crossing
+ // over IPC, so there's no other principal that'll work.
+ const persistable = browser.frameLoader;
+ persistable.startPersistence(null, {
+ onDocumentReady(doc) {
+ const uri = chrome.makeURI(doc.documentURI, doc.characterSet);
+ const filename = chrome.getDefaultFileName(undefined, uri, doc, null);
+ chrome.internalSave(
+ message.data,
+ null /* originalURL */,
+ null,
+ filename,
+ null,
+ doc.contentType,
+ false /* bypass cache */,
+ null /* filepicker title key */,
+ null /* file chosen */,
+ null /* referrer */,
+ doc.cookieJarSettings,
+ null /* initiating document */,
+ false /* don't skip prompt for a location */,
+ null /* cache key */,
+ lazy.PrivateBrowsingUtils.isBrowserPrivate(
+ browser
+ ) /* private browsing ? */,
+ Services.scriptSecurityManager.getSystemPrincipal()
+ );
+ },
+ onError(status) {
+ throw new Error("JSON Viewer's onSave failed in startPersistence");
+ },
+ });
+ }
+ },
+};