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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";
+
+// Module to create all the Session Context objects.
+//
+// These are static JSON serializable object that help describe
+// the debugged context. It is passed around to most of the server codebase
+// in order to know which object to consider inspecting and communicating back to the client.
+//
+// These objects are all instantiated by the Descriptor actors
+// and passed as a constructor argument to the Watcher actor.
+//
+// These objects have attributes used by all the Session contexts:
+// - type: String
+// Describes which type of context we are debugging.
+// See SESSION_TYPES for all possible values.
+// See each create* method for more info about each type and their specific attributes.
+// - isServerTargetSwitchingEnabled: Boolean
+// If true, targets should all be spawned by the server codebase.
+// Especially the first, top level target.
+// - supportedTargets: Boolean
+// An object keyed by target type, whose value indicates if we have watcher support
+// for the target.
+// - supportedResources: Boolean
+// An object keyed by resource type, whose value indicates if we have watcher support
+// for the resource.
+
+const Targets = require("resource://devtools/server/actors/targets/index.js");
+const Resources = require("resource://devtools/server/actors/resources/index.js");
+
+const SESSION_TYPES = {
+ ALL: "all",
+ BROWSER_ELEMENT: "browser-element",
+ CONTENT_PROCESS: "content-process",
+ WEBEXTENSION: "webextension",
+ WORKER: "worker",
+};
+
+/**
+ * Create the SessionContext used by the Browser Toolbox and Browser Console.
+ *
+ * This context means debugging everything.
+ * The whole browser:
+ * - all processes: parent and content,
+ * - all privileges: privileged/chrome and content/web,
+ * - all components/targets: HTML documents, processes, workers, add-ons,...
+ */
+function createBrowserSessionContext() {
+ const type = SESSION_TYPES.ALL;
+
+ return {
+ type,
+ // For now, the top level target (ParentProcessTargetActor) is created via ProcessDescriptor.getTarget
+ // and is never replaced by any other, nor is it created by the WatcherActor.
+ isServerTargetSwitchingEnabled: false,
+ supportedTargets: getWatcherSupportedTargets(type),
+ supportedResources: getWatcherSupportedResources(type),
+ };
+}
+
+/**
+ * Create the SessionContext used by the regular web page toolboxes as well as remote debugging android device tabs.
+ *
+ * @param {BrowserElement} browserElement
+ * The tab to debug. It should be a reference to a <browser> element.
+ * @param {Object} config
+ * An object with optional configuration. Only supports "isServerTargetSwitchingEnabled" attribute.
+ * See jsdoc in this file header for more info.
+ */
+function createBrowserElementSessionContext(browserElement, config) {
+ const type = SESSION_TYPES.BROWSER_ELEMENT;
+ return {
+ type,
+ browserId: browserElement.browserId,
+ // Nowaday, it should always be enabled except for WebExtension special
+ // codepath and some tests.
+ isServerTargetSwitchingEnabled: config.isServerTargetSwitchingEnabled,
+ // Should we instantiate targets for popups opened in distinct tabs/windows?
+ // Driven by devtools.popups.debug=true preference.
+ isPopupDebuggingEnabled: config.isPopupDebuggingEnabled,
+ supportedTargets: getWatcherSupportedTargets(type),
+ supportedResources: getWatcherSupportedResources(type),
+ };
+}
+
+/**
+ * Create the SessionContext used by the web extension toolboxes.
+ *
+ * @param {Object} addon
+ * First object argument to describe the add-on.
+ * @param {String} addon.addonId
+ * The web extension ID, to uniquely identify the debugged add-on.
+ * @param {String} addon.browsingContextID
+ * The ID of the BrowsingContext into which this add-on is loaded.
+ * For now the top level target is associated with this one precise BrowsingContext.
+ * Knowing about it later helps associate resources to the same BrowsingContext ID and so the same target.
+ * @param {String} addon.innerWindowId
+ * The ID of the WindowGlobal into which this add-on is loaded.
+ * This is used for the same reason as browsingContextID. It helps match the resource with the right target.
+ * We now also use the WindowGlobal ID/innerWindowId to identify the targets.
+ * @param {Object} config
+ * An object with optional configuration. Only supports "isServerTargetSwitchingEnabled" attribute.
+ * See jsdoc in this file header for more info.
+ */
+function createWebExtensionSessionContext(
+ { addonId, browsingContextID, innerWindowId },
+ config
+) {
+ const type = SESSION_TYPES.WEBEXTENSION;
+ return {
+ type,
+ addonId,
+ addonBrowsingContextID: browsingContextID,
+ addonInnerWindowId: innerWindowId,
+ // For now, there is only one target (WebExtensionTargetActor), it is never replaced,
+ // and is only created via WebExtensionDescriptor.getTarget (and never by the watcher actor).
+ isServerTargetSwitchingEnabled: config.isServerTargetSwitchingEnabled,
+ supportedTargets: getWatcherSupportedTargets(type),
+ supportedResources: getWatcherSupportedResources(type),
+ };
+}
+
+/**
+ * Create the SessionContext used by the Browser Content Toolbox, to debug only one content process.
+ * Or when debugging XpcShell via about:debugging, where we instantiate only one content process target.
+ */
+function createContentProcessSessionContext() {
+ const type = SESSION_TYPES.CONTENT_PROCESS;
+ return {
+ type,
+ supportedTargets: getWatcherSupportedTargets(type),
+ supportedResources: getWatcherSupportedResources(type),
+ };
+}
+
+/**
+ * Create the SessionContext used when debugging one specific Service Worker or special chrome worker.
+ * This is only used from about:debugging.
+ */
+function createWorkerSessionContext() {
+ const type = SESSION_TYPES.WORKER;
+ return {
+ type,
+ supportedTargets: getWatcherSupportedTargets(type),
+ supportedResources: getWatcherSupportedResources(type),
+ };
+}
+
+/**
+ * Get the supported targets by the watcher given a session context type.
+ *
+ * @param {String} type
+ * @returns {Object}
+ */
+function getWatcherSupportedTargets(type) {
+ return {
+ [Targets.TYPES.FRAME]: true,
+ [Targets.TYPES.PROCESS]: true,
+ [Targets.TYPES.WORKER]:
+ type == SESSION_TYPES.BROWSER_ELEMENT ||
+ type == SESSION_TYPES.WEBEXTENSION,
+ };
+}
+
+/**
+ * Get the supported resources by the watcher given a session context type.
+ *
+ * @param {String} type
+ * @returns {Object}
+ */
+function getWatcherSupportedResources(type) {
+ // All resources types are supported for tab debugging and web extensions.
+ // Some watcher classes are still disabled for the Multiprocess Browser Toolbox (type=SESSION_TYPES.ALL).
+ // And they may also be disabled for workers once we start supporting them by the watcher.
+ // So set the traits to false for all the resources that we don't support yet
+ // and keep using the legacy listeners.
+ const isTabOrWebExtensionToolbox =
+ type == SESSION_TYPES.BROWSER_ELEMENT || type == SESSION_TYPES.WEBEXTENSION;
+
+ return {
+ [Resources.TYPES.CONSOLE_MESSAGE]: true,
+ [Resources.TYPES.CSS_CHANGE]: isTabOrWebExtensionToolbox,
+ [Resources.TYPES.CSS_MESSAGE]: true,
+ [Resources.TYPES.DOCUMENT_EVENT]: true,
+ [Resources.TYPES.CACHE_STORAGE]: true,
+ [Resources.TYPES.COOKIE]: true,
+ [Resources.TYPES.ERROR_MESSAGE]: true,
+ [Resources.TYPES.EXTENSION_STORAGE]: true,
+ [Resources.TYPES.INDEXED_DB]: true,
+ [Resources.TYPES.LOCAL_STORAGE]: true,
+ [Resources.TYPES.SESSION_STORAGE]: true,
+ [Resources.TYPES.PLATFORM_MESSAGE]: true,
+ [Resources.TYPES.NETWORK_EVENT]: true,
+ [Resources.TYPES.NETWORK_EVENT_STACKTRACE]: true,
+ [Resources.TYPES.REFLOW]: true,
+ [Resources.TYPES.STYLESHEET]: true,
+ [Resources.TYPES.SOURCE]: true,
+ [Resources.TYPES.THREAD_STATE]: true,
+ [Resources.TYPES.SERVER_SENT_EVENT]: true,
+ [Resources.TYPES.WEBSOCKET]: true,
+ [Resources.TYPES.TRACING_STATE]: true,
+ [Resources.TYPES.LAST_PRIVATE_CONTEXT_EXIT]: true,
+ };
+}
+
+module.exports = {
+ createBrowserSessionContext,
+ createBrowserElementSessionContext,
+ createWebExtensionSessionContext,
+ createContentProcessSessionContext,
+ createWorkerSessionContext,
+};