gecko-dev/devtools/client/framework/devtools.js

876 строки
27 KiB
JavaScript

/* 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";
const { Cu } = require("chrome");
const Services = require("Services");
const {
DevToolsShim,
} = require("chrome://devtools-startup/content/DevToolsShim.jsm");
loader.lazyRequireGetter(
this,
"TargetFactory",
"devtools/client/framework/target",
true
);
loader.lazyRequireGetter(
this,
"ToolboxHostManager",
"devtools/client/framework/toolbox-host-manager",
true
);
loader.lazyRequireGetter(
this,
"BrowserConsoleManager",
"devtools/client/webconsole/browser-console-manager",
true
);
loader.lazyRequireGetter(this, "Telemetry", "devtools/client/shared/telemetry");
loader.lazyImporter(
this,
"BrowserToolboxLauncher",
"resource://devtools/client/framework/browser-toolbox/Launcher.jsm"
);
const {
defaultTools: DefaultTools,
defaultThemes: DefaultThemes,
} = require("devtools/client/definitions");
const EventEmitter = require("devtools/shared/event-emitter");
const {
getTheme,
setTheme,
addThemeObserver,
removeThemeObserver,
} = require("devtools/client/shared/theme");
const FORBIDDEN_IDS = new Set(["toolbox", ""]);
const MAX_ORDINAL = 99;
const CONTENT_FISSION_ENABLED_PREF = "devtools.contenttoolbox.fission";
/**
* DevTools is a class that represents a set of developer tools, it holds a
* set of tools and keeps track of open toolboxes in the browser.
*/
function DevTools() {
this._tools = new Map(); // Map<toolId, tool>
this._themes = new Map(); // Map<themeId, theme>
this._toolboxes = new Map(); // Map<target, toolbox>
// List of toolboxes that are still in process of creation
this._creatingToolboxes = new Map(); // Map<target, toolbox Promise>
EventEmitter.decorate(this);
this._telemetry = new Telemetry();
this._telemetry.setEventRecordingEnabled(true);
// Listen for changes to the theme pref.
this._onThemeChanged = this._onThemeChanged.bind(this);
addThemeObserver(this._onThemeChanged);
// This is important step in initialization codepath where we are going to
// start registering all default tools and themes: create menuitems, keys, emit
// related events.
this.registerDefaults();
// Register this DevTools instance on the DevToolsShim, which is used by non-devtools
// code to interact with DevTools.
DevToolsShim.register(this);
}
DevTools.prototype = {
// The windowtype of the main window, used in various tools. This may be set
// to something different by other gecko apps.
chromeWindowType: "navigator:browser",
registerDefaults() {
// Ensure registering items in the sorted order (getDefault* functions
// return sorted lists)
this.getDefaultTools().forEach(definition => this.registerTool(definition));
this.getDefaultThemes().forEach(definition =>
this.registerTheme(definition)
);
},
unregisterDefaults() {
for (const definition of this.getToolDefinitionArray()) {
this.unregisterTool(definition.id);
}
for (const definition of this.getThemeDefinitionArray()) {
this.unregisterTheme(definition.id);
}
},
/**
* Register a new developer tool.
*
* A definition is a light object that holds different information about a
* developer tool. This object is not supposed to have any operational code.
* See it as a "manifest".
* The only actual code lives in the build() function, which will be used to
* start an instance of this tool.
*
* Each toolDefinition has the following properties:
* - id: Unique identifier for this tool (string|required)
* - visibilityswitch: Property name to allow us to hide this tool from the
* DevTools Toolbox.
* A falsy value indicates that it cannot be hidden.
* - icon: URL pointing to a graphic which will be used as the src for an
* 16x16 img tag (string|required)
* - url: URL pointing to a XUL/XHTML document containing the user interface
* (string|required)
* - label: Localized name for the tool to be displayed to the user
* (string|required)
* - hideInOptions: Boolean indicating whether or not this tool should be
shown in toolbox options or not. Defaults to false.
* (boolean)
* - build: Function that takes an iframe, which has been populated with the
* markup from |url|, and also the toolbox containing the panel.
* And returns an instance of ToolPanel (function|required)
*/
registerTool(toolDefinition) {
const toolId = toolDefinition.id;
if (!toolId || FORBIDDEN_IDS.has(toolId)) {
throw new Error("Invalid definition.id");
}
// Make sure that additional tools will always be able to be hidden.
// When being called from main.js, defaultTools has not yet been exported.
// But, we can assume that in this case, it is a default tool.
if (!DefaultTools.includes(toolDefinition)) {
toolDefinition.visibilityswitch = "devtools." + toolId + ".enabled";
}
this._tools.set(toolId, toolDefinition);
this.emit("tool-registered", toolId);
},
/**
* Removes all tools that match the given |toolId|
* Needed so that add-ons can remove themselves when they are deactivated
*
* @param {string|object} tool
* Definition or the id of the tool to unregister. Passing the
* tool id should be avoided as it is a temporary measure.
* @param {boolean} isQuitApplication
* true to indicate that the call is due to app quit, so we should not
* cause a cascade of costly events
*/
unregisterTool(tool, isQuitApplication) {
let toolId = null;
if (typeof tool == "string") {
toolId = tool;
tool = this._tools.get(tool);
} else {
const { Deprecated } = require("resource://gre/modules/Deprecated.jsm");
Deprecated.warning(
"Deprecation WARNING: gDevTools.unregisterTool(tool) is " +
"deprecated. You should unregister a tool using its toolId: " +
"gDevTools.unregisterTool(toolId)."
);
toolId = tool.id;
}
this._tools.delete(toolId);
if (!isQuitApplication) {
this.emit("tool-unregistered", toolId);
}
},
/**
* Sorting function used for sorting tools based on their ordinals.
*/
ordinalSort(d1, d2) {
const o1 = typeof d1.ordinal == "number" ? d1.ordinal : MAX_ORDINAL;
const o2 = typeof d2.ordinal == "number" ? d2.ordinal : MAX_ORDINAL;
return o1 - o2;
},
getDefaultTools() {
return DefaultTools.sort(this.ordinalSort);
},
getAdditionalTools() {
const tools = [];
for (const [, value] of this._tools) {
if (!DefaultTools.includes(value)) {
tools.push(value);
}
}
return tools.sort(this.ordinalSort);
},
getDefaultThemes() {
return DefaultThemes.sort(this.ordinalSort);
},
/**
* Get a tool definition if it exists and is enabled.
*
* @param {string} toolId
* The id of the tool to show
*
* @return {ToolDefinition|null} tool
* The ToolDefinition for the id or null.
*/
getToolDefinition(toolId) {
const tool = this._tools.get(toolId);
if (!tool) {
return null;
} else if (!tool.visibilityswitch) {
return tool;
}
const enabled = Services.prefs.getBoolPref(tool.visibilityswitch, true);
return enabled ? tool : null;
},
/**
* Allow ToolBoxes to get at the list of tools that they should populate
* themselves with.
*
* @return {Map} tools
* A map of the the tool definitions registered in this instance
*/
getToolDefinitionMap() {
const tools = new Map();
for (const [id, definition] of this._tools) {
if (this.getToolDefinition(id)) {
tools.set(id, definition);
}
}
return tools;
},
/**
* Tools have an inherent ordering that can't be represented in a Map so
* getToolDefinitionArray provides an alternative representation of the
* definitions sorted by ordinal value.
*
* @return {Array} tools
* A sorted array of the tool definitions registered in this instance
*/
getToolDefinitionArray() {
const definitions = [];
for (const [id, definition] of this._tools) {
if (this.getToolDefinition(id)) {
definitions.push(definition);
}
}
return definitions.sort(this.ordinalSort);
},
/**
* Returns the name of the current theme for devtools.
*
* @return {string} theme
* The name of the current devtools theme.
*/
getTheme() {
return getTheme();
},
/**
* Called when the developer tools theme changes.
*/
_onThemeChanged() {
this.emit("theme-changed", getTheme());
},
/**
* Register a new theme for developer tools toolbox.
*
* A definition is a light object that holds various information about a
* theme.
*
* Each themeDefinition has the following properties:
* - id: Unique identifier for this theme (string|required)
* - label: Localized name for the theme to be displayed to the user
* (string|required)
* - stylesheets: Array of URLs pointing to a CSS document(s) containing
* the theme style rules (array|required)
* - classList: Array of class names identifying the theme within a document.
* These names are set to document element when applying
* the theme (array|required)
* - onApply: Function that is executed by the framework when the theme
* is applied. The function takes the current iframe window
* and the previous theme id as arguments (function)
* - onUnapply: Function that is executed by the framework when the theme
* is unapplied. The function takes the current iframe window
* and the new theme id as arguments (function)
*/
registerTheme(themeDefinition) {
const themeId = themeDefinition.id;
if (!themeId) {
throw new Error("Invalid theme id");
}
if (this._themes.get(themeId)) {
throw new Error("Theme with the same id is already registered");
}
this._themes.set(themeId, themeDefinition);
this.emit("theme-registered", themeId);
},
/**
* Removes an existing theme from the list of registered themes.
* Needed so that add-ons can remove themselves when they are deactivated
*
* @param {string|object} theme
* Definition or the id of the theme to unregister.
*/
unregisterTheme(theme) {
let themeId = null;
if (typeof theme == "string") {
themeId = theme;
theme = this._themes.get(theme);
} else {
themeId = theme.id;
}
const currTheme = getTheme();
// Note that we can't check if `theme` is an item
// of `DefaultThemes` as we end up reloading definitions
// module and end up with different theme objects
const isCoreTheme = DefaultThemes.some(t => t.id === themeId);
// Reset the theme if an extension theme that's currently applied
// is being removed.
// Ignore shutdown since addons get disabled during that time.
if (
!Services.startup.shuttingDown &&
!isCoreTheme &&
theme.id == currTheme
) {
setTheme("light");
this.emit("theme-unregistered", theme);
}
this._themes.delete(themeId);
},
/**
* Get a theme definition if it exists.
*
* @param {string} themeId
* The id of the theme
*
* @return {ThemeDefinition|null} theme
* The ThemeDefinition for the id or null.
*/
getThemeDefinition(themeId) {
const theme = this._themes.get(themeId);
if (!theme) {
return null;
}
return theme;
},
/**
* Get map of registered themes.
*
* @return {Map} themes
* A map of the the theme definitions registered in this instance
*/
getThemeDefinitionMap() {
const themes = new Map();
for (const [id, definition] of this._themes) {
if (this.getThemeDefinition(id)) {
themes.set(id, definition);
}
}
return themes;
},
/**
* Get registered themes definitions sorted by ordinal value.
*
* @return {Array} themes
* A sorted array of the theme definitions registered in this instance
*/
getThemeDefinitionArray() {
const definitions = [];
for (const [id, definition] of this._themes) {
if (this.getThemeDefinition(id)) {
definitions.push(definition);
}
}
return definitions.sort(this.ordinalSort);
},
/**
* Called from SessionStore.jsm in mozilla-central when saving the current state.
*
* @param {Object} state
* A SessionStore state object that gets modified by reference
*/
saveDevToolsSession: function(state) {
state.browserConsole = BrowserConsoleManager.getBrowserConsoleSessionState();
state.browserToolbox = BrowserToolboxLauncher.getBrowserToolboxSessionState();
},
/**
* Restore the devtools session state as provided by SessionStore.
*/
restoreDevToolsSession: async function({ browserConsole, browserToolbox }) {
if (browserToolbox) {
BrowserToolboxLauncher.init();
}
if (browserConsole && !BrowserConsoleManager.getBrowserConsole()) {
await BrowserConsoleManager.toggleBrowserConsole();
}
},
/**
* Boolean, true, if we never opened a toolbox.
* Used to implement the telemetry tracking toolbox opening.
*/
_firstShowToolbox: true,
/**
* Show a Toolbox for a target (either by creating a new one, or if a toolbox
* already exists for the target, by bring to the front the existing one)
* If |toolId| is specified then the displayed toolbox will have the
* specified tool selected.
* If |hostType| is specified then the toolbox will be displayed using the
* specified HostType.
*
* @param {Target} target
* The target the toolbox will debug
* @param {string} toolId
* The id of the tool to show
* @param {Toolbox.HostType} hostType
* The type of host (bottom, window, left, right)
* @param {object} hostOptions
* Options for host specifically
* @param {Number} startTime
* Optional, indicates the time at which the user event related to this toolbox
* opening started. This is a `Cu.now()` timing.
* @param {string} reason
* Reason the tool was opened
* @param {boolean} shouldRaiseToolbox
* Whether we need to raise the toolbox or not.
*
* @return {Toolbox} toolbox
* The toolbox that was opened
*/
async showToolbox(
target,
toolId,
hostType,
hostOptions,
startTime,
reason = "toolbox_show",
shouldRaiseToolbox = true
) {
let toolbox = this._toolboxes.get(target);
if (toolbox) {
if (hostType != null && toolbox.hostType != hostType) {
await toolbox.switchHost(hostType);
}
if (toolId != null) {
// selectTool will either select the tool if not currently selected, or wait for
// the tool to be loaded if needed.
await toolbox.selectTool(toolId, reason);
}
if (shouldRaiseToolbox) {
toolbox.raise();
}
} else {
// As toolbox object creation is async, we have to be careful about races
// Check for possible already in process of loading toolboxes before
// actually trying to create a new one.
const promise = this._creatingToolboxes.get(target);
if (promise) {
return promise;
}
const toolboxPromise = this.createToolbox(
target,
toolId,
hostType,
hostOptions
);
this._creatingToolboxes.set(target, toolboxPromise);
toolbox = await toolboxPromise;
this._creatingToolboxes.delete(target);
if (startTime) {
this.logToolboxOpenTime(toolbox, startTime);
}
this._firstShowToolbox = false;
}
// We send the "enter" width here to ensure it is always sent *after*
// the "open" event.
const width = Math.ceil(toolbox.win.outerWidth / 50) * 50;
const panelName = this.makeToolIdHumanReadable(
toolId || toolbox.defaultToolId
);
this._telemetry.addEventProperty(
toolbox,
"enter",
panelName,
null,
"width",
width
);
return toolbox;
},
/**
* Log telemetry related to toolbox opening.
* Two distinct probes are logged. One for cold startup, when we open the very first
* toolbox. This one includes devtools framework loading. And a second one for all
* subsequent toolbox opening, which should all be faster.
* These two probes are indexed by Tool ID.
*
* @param {String} toolbox
* Toolbox instance.
* @param {Number} startTime
* Indicates the time at which the user event related to the toolbox
* opening started. This is a `Cu.now()` timing.
*/
logToolboxOpenTime(toolbox, startTime) {
const toolId = toolbox.currentToolId || toolbox.defaultToolId;
const delay = Cu.now() - startTime;
const panelName = this.makeToolIdHumanReadable(toolId);
const telemetryKey = this._firstShowToolbox
? "DEVTOOLS_COLD_TOOLBOX_OPEN_DELAY_MS"
: "DEVTOOLS_WARM_TOOLBOX_OPEN_DELAY_MS";
this._telemetry.getKeyedHistogramById(telemetryKey).add(toolId, delay);
const browserWin = toolbox.topWindow;
this._telemetry.addEventProperty(
browserWin,
"open",
"tools",
null,
"first_panel",
panelName
);
},
makeToolIdHumanReadable(toolId) {
if (/^[0-9a-fA-F]{40}_temporary-addon/.test(toolId)) {
return "temporary-addon";
}
let matches = toolId.match(
/^_([0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12})_/
);
if (matches && matches.length === 2) {
return matches[1];
}
matches = toolId.match(/^_?(.*)-\d+-\d+-devtools-panel$/);
if (matches && matches.length === 2) {
return matches[1];
}
return toolId;
},
async createToolbox(target, toolId, hostType, hostOptions) {
const manager = new ToolboxHostManager(target, hostType, hostOptions);
const toolbox = await manager.create(toolId);
this._toolboxes.set(target, toolbox);
this.emit("toolbox-created", toolbox);
toolbox.once("destroy", () => {
this.emit("toolbox-destroy", toolbox);
});
toolbox.once("destroyed", () => {
this._toolboxes.delete(target);
this.emit("toolbox-destroyed", toolbox);
});
// If the document navigates to another process, the current target will be
// destroyed in favor of a new one. So acknowledge this swap here.
toolbox.on("switch-target", newTarget => {
this._toolboxes.delete(target);
this._toolboxes.set(newTarget, toolbox);
target = newTarget;
});
await toolbox.open();
this.emit("toolbox-ready", toolbox);
return toolbox;
},
/**
* Return the toolbox for a given target.
*
* @param {object} target
* Target value e.g. the target that owns this toolbox
*
* @return {Toolbox} toolbox
* The toolbox that is debugging the given target
*/
getToolbox(target) {
return this._toolboxes.get(target);
},
/**
* Close the toolbox for a given target
*
* @return promise
* This promise will resolve to false if no toolbox was found
* associated to the target. true, if the toolbox was successfully
* closed.
*/
async closeToolbox(target) {
let toolbox = await this._creatingToolboxes.get(target);
if (!toolbox) {
toolbox = this._toolboxes.get(target);
}
if (!toolbox) {
return false;
}
await toolbox.destroy();
return true;
},
/**
* Wrapper on TargetFactory.forTab, constructs a Target for the provided tab.
*
* @param {XULTab} tab
* The tab to use in creating a new target.
*
* @return {Target} A target object
*/
getTargetForTab: function(tab) {
return TargetFactory.forTab(tab);
},
/**
* Compatibility layer for web-extensions. Used by DevToolsShim for
* browser/components/extensions/ext-devtools.js
*
* web-extensions need to use dedicated instances of Target and cannot reuse the
* cached instances managed by DevTools target factory.
*/
createTargetForTab: function(tab) {
return TargetFactory.createTargetForTab(tab);
},
/**
* Compatibility layer for web-extensions. Used by DevToolsShim for
* browser/components/extensions/ext-devtools-inspectedWindow.js
*/
createWebExtensionInspectedWindowFront: function(tabTarget) {
return tabTarget.getFront("webExtensionInspectedWindow");
},
/**
* Compatibility layer for web-extensions. Used by DevToolsShim for
* toolkit/components/extensions/ext-c-toolkit.js
*/
openBrowserConsole: function() {
const {
BrowserConsoleManager,
} = require("devtools/client/webconsole/browser-console-manager");
BrowserConsoleManager.openBrowserConsoleOrFocus();
},
/**
* Called from the DevToolsShim, used by nsContextMenu.js.
*
* @param {XULTab} tab
* The browser tab on which inspect node was used.
* @param {ElementIdentifier} domReference
* Identifier generated by ContentDOMReference. It is a unique pair of
* BrowsingContext ID and a numeric ID.
* @param {Number} startTime
* Optional, indicates the time at which the user event related to this node
* inspection started. This is a `Cu.now()` timing.
* @return {Promise} a promise that resolves when the node is selected in the inspector
* markup view.
*/
async inspectNode(tab, domReference, startTime) {
const target = await TargetFactory.forTab(tab);
const toolbox = await gDevTools.showToolbox(
target,
"inspector",
null,
null,
startTime,
"inspect_dom"
);
const inspector = toolbox.getCurrentPanel();
const nodeFront = await inspector.inspectorFront.getNodeActorFromContentDomReference(
domReference
);
if (!nodeFront) {
return;
}
// "new-node-front" tells us when the node has been selected, whether the
// browser is remote or not.
const onNewNode = inspector.selection.once("new-node-front");
// Select the final node
inspector.selection.setNodeFront(nodeFront, {
reason: "browser-context-menu",
});
await onNewNode;
// Now that the node has been selected, wait until the inspector is
// fully updated.
await inspector.once("inspector-updated");
},
/**
* Called from the DevToolsShim, used by nsContextMenu.js.
*
* @param {XULTab} tab
* The browser tab on which inspect accessibility was used.
* @param {ElementIdentifier} domReference
* Identifier generated by ContentDOMReference. It is a unique pair of
* BrowsingContext ID and a numeric ID.
* @param {Number} startTime
* Optional, indicates the time at which the user event related to this
* node inspection started. This is a `Cu.now()` timing.
* @return {Promise} a promise that resolves when the accessible object is
* selected in the accessibility inspector.
*/
async inspectA11Y(tab, domReference, startTime) {
const target = await TargetFactory.forTab(tab);
const toolbox = await gDevTools.showToolbox(
target,
"accessibility",
null,
null,
startTime
);
const inspectorFront = await toolbox.target.getFront("inspector");
const nodeFront = await inspectorFront.getNodeActorFromContentDomReference(
domReference
);
if (!nodeFront) {
return;
}
// Select the accessible object in the panel and wait for the event that
// tells us it has been done.
const a11yPanel = toolbox.getCurrentPanel();
const onSelected = a11yPanel.once("new-accessible-front-selected");
a11yPanel.selectAccessibleForNode(nodeFront, "browser-context-menu");
await onSelected;
},
/**
* Either the DevTools Loader has been destroyed or firefox is shutting down.
* @param {boolean} shuttingDown
* True if firefox is currently shutting down. We may prevent doing
* some cleanups to speed it up. Otherwise everything need to be
* cleaned up in order to be able to load devtools again.
*/
destroy({ shuttingDown }) {
// Do not cleanup everything during firefox shutdown.
if (!shuttingDown) {
for (const [, toolbox] of this._toolboxes) {
toolbox.destroy();
}
}
for (const [key] of this.getToolDefinitionMap()) {
this.unregisterTool(key, true);
}
gDevTools.unregisterDefaults();
removeThemeObserver(this._onThemeChanged);
// Do not unregister devtools from the DevToolsShim if the destroy is caused by an
// application shutdown. For instance SessionStore needs to save the Browser Toolbox
// state on shutdown.
if (!shuttingDown) {
// Notify the DevToolsShim that DevTools are no longer available, particularly if
// the destroy was caused by disabling/removing DevTools.
DevToolsShim.unregister();
}
// Cleaning down the toolboxes: i.e.
// for (let [target, toolbox] of this._toolboxes) toolbox.destroy();
// Is taken care of by the gDevToolsBrowser.forgetBrowserWindow
},
/**
* Returns the array of the existing toolboxes.
*
* @return {Array<Toolbox>}
* An array of toolboxes.
*/
getToolboxes() {
return Array.from(this._toolboxes.values());
},
/**
* Check if the content from remote frames should be displayed in the toolbox.
* This depends both on enabling the dedicated devtools preference as well as
* the fission.autostart preference.
*/
isFissionContentToolboxEnabled() {
if (typeof this._cachedFissionContentToolboxEnabled === "undefined") {
const isContentFissionEnabled = Services.prefs.getBoolPref(
CONTENT_FISSION_ENABLED_PREF,
false
);
// Checking fission.autostart is not used to check if the current target
// is a Fission tab, but only to check if the user is currently dogfooding
// Fission.
const isFissionEnabled = Services.appinfo.fissionAutostart;
this._cachedFissionContentToolboxEnabled =
isFissionEnabled && isContentFissionEnabled;
}
return this._cachedFissionContentToolboxEnabled;
},
/**
* Clear the _cachedFissionContentToolboxEnabled reference so next call to
* isFissionContentToolboxEnabled will read the preferences values again instead of
* relying on the cached value.
* ⚠️ This should only be used in tests as it could lead to different
* isFissionContentToolboxEnabled results if the preferences are changed while
* toolboxes are open ⚠️.
*/
clearIsFissionContentToolboxEnabledReferenceForTest() {
delete this._cachedFissionContentToolboxEnabled;
},
};
const gDevTools = (exports.gDevTools = new DevTools());