gecko-dev/devtools/client/inspector/inspector.js
2019-08-27 19:13:45 +00:00

1853 lines
56 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 Services = require("Services");
const promise = require("promise");
const EventEmitter = require("devtools/shared/event-emitter");
const { executeSoon } = require("devtools/shared/DevToolsUtils");
const { Toolbox } = require("devtools/client/framework/toolbox");
const ReflowTracker = require("devtools/client/inspector/shared/reflow-tracker");
const Store = require("devtools/client/inspector/store");
const InspectorStyleChangeTracker = require("devtools/client/inspector/shared/style-change-tracker");
// Use privileged promise in panel documents to prevent having them to freeze
// during toolbox destruction. See bug 1402779.
const Promise = require("Promise");
loader.lazyRequireGetter(
this,
"initCssProperties",
"devtools/shared/fronts/css-properties",
true
);
loader.lazyRequireGetter(
this,
"HTMLBreadcrumbs",
"devtools/client/inspector/breadcrumbs",
true
);
loader.lazyRequireGetter(
this,
"KeyShortcuts",
"devtools/client/shared/key-shortcuts"
);
loader.lazyRequireGetter(
this,
"InspectorSearch",
"devtools/client/inspector/inspector-search",
true
);
loader.lazyRequireGetter(
this,
"ToolSidebar",
"devtools/client/inspector/toolsidebar",
true
);
loader.lazyRequireGetter(
this,
"MarkupView",
"devtools/client/inspector/markup/markup"
);
loader.lazyRequireGetter(
this,
"HighlightersOverlay",
"devtools/client/inspector/shared/highlighters-overlay"
);
loader.lazyRequireGetter(
this,
"ExtensionSidebar",
"devtools/client/inspector/extensions/extension-sidebar"
);
loader.lazyRequireGetter(
this,
"saveScreenshot",
"devtools/shared/screenshot/save"
);
loader.lazyImporter(
this,
"DeferredTask",
"resource://gre/modules/DeferredTask.jsm"
);
const { LocalizationHelper, localizeMarkup } = require("devtools/shared/l10n");
const INSPECTOR_L10N = new LocalizationHelper(
"devtools/client/locales/inspector.properties"
);
// Sidebar dimensions
const INITIAL_SIDEBAR_SIZE = 350;
// How long we wait to debounce resize events
const LAZY_RESIZE_INTERVAL_MS = 200;
// If the toolbox's width is smaller than the given amount of pixels, the sidebar
// automatically switches from 'landscape/horizontal' to 'portrait/vertical' mode.
const PORTRAIT_MODE_WIDTH_THRESHOLD = 700;
// If the toolbox's width docked to the side is smaller than the given amount of pixels,
// the sidebar automatically switches from 'landscape/horizontal' to 'portrait/vertical'
// mode.
const SIDE_PORTAIT_MODE_WIDTH_THRESHOLD = 1000;
const THREE_PANE_ENABLED_PREF = "devtools.inspector.three-pane-enabled";
const THREE_PANE_ENABLED_SCALAR = "devtools.inspector.three_pane_enabled";
const THREE_PANE_CHROME_ENABLED_PREF =
"devtools.inspector.chrome.three-pane-enabled";
const TELEMETRY_EYEDROPPER_OPENED = "devtools.toolbar.eyedropper.opened";
const TELEMETRY_SCALAR_NODE_SELECTION_COUNT =
"devtools.inspector.node_selection_count";
/**
* Represents an open instance of the Inspector for a tab.
* The inspector controls the breadcrumbs, the markup view, and the sidebar
* (computed view, rule view, font view and animation inspector).
*
* Events:
* - ready
* Fired when the inspector panel is opened for the first time and ready to
* use
* - new-root
* Fired after a new root (navigation to a new page) event was fired by
* the walker, and taken into account by the inspector (after the markup
* view has been reloaded)
* - markuploaded
* Fired when the markup-view frame has loaded
* - breadcrumbs-updated
* Fired when the breadcrumb widget updates to a new node
* - boxmodel-view-updated
* Fired when the box model updates to a new node
* - markupmutation
* Fired after markup mutations have been processed by the markup-view
* - computed-view-refreshed
* Fired when the computed rules view updates to a new node
* - computed-view-property-expanded
* Fired when a property is expanded in the computed rules view
* - computed-view-property-collapsed
* Fired when a property is collapsed in the computed rules view
* - computed-view-sourcelinks-updated
* Fired when the stylesheet source links have been updated (when switching
* to source-mapped files)
* - rule-view-refreshed
* Fired when the rule view updates to a new node
* - rule-view-sourcelinks-updated
* Fired when the stylesheet source links have been updated (when switching
* to source-mapped files)
*/
function Inspector(toolbox) {
EventEmitter.decorate(this);
this._toolbox = toolbox;
this._target = toolbox.target;
this.panelDoc = window.document;
this.panelWin = window;
this.panelWin.inspector = this;
this.telemetry = toolbox.telemetry;
this.store = Store();
// Map [panel id => panel instance]
// Stores all the instances of sidebar panels like rule view, computed view, ...
this._panels = new Map();
this._clearSearchResultsLabel = this._clearSearchResultsLabel.bind(this);
this._handleRejectionIfNotDestroyed = this._handleRejectionIfNotDestroyed.bind(
this
);
this._onBeforeNavigate = this._onBeforeNavigate.bind(this);
this._onMarkupFrameLoad = this._onMarkupFrameLoad.bind(this);
this._updateSearchResultsLabel = this._updateSearchResultsLabel.bind(this);
this.onDetached = this.onDetached.bind(this);
this.onHostChanged = this.onHostChanged.bind(this);
this.onMarkupLoaded = this.onMarkupLoaded.bind(this);
this.onNewSelection = this.onNewSelection.bind(this);
this.onNewRoot = this.onNewRoot.bind(this);
this.onPanelWindowResize = this.onPanelWindowResize.bind(this);
this.onShowBoxModelHighlighterForNode = this.onShowBoxModelHighlighterForNode.bind(
this
);
this.onSidebarHidden = this.onSidebarHidden.bind(this);
this.onSidebarResized = this.onSidebarResized.bind(this);
this.onSidebarSelect = this.onSidebarSelect.bind(this);
this.onSidebarShown = this.onSidebarShown.bind(this);
this.onSidebarToggle = this.onSidebarToggle.bind(this);
this.handleThreadPaused = this.handleThreadPaused.bind(this);
this.handleThreadResumed = this.handleThreadResumed.bind(this);
}
Inspector.prototype = {
/**
* InspectorPanel.open() is effectively an asynchronous constructor.
* Set any attributes or listeners that rely on the document being loaded or fronts
* from the InspectorFront and Target here.
*/
async init() {
// Localize all the nodes containing a data-localization attribute.
localizeMarkup(this.panelDoc);
// When replaying, we need to listen to changes in the target's pause state.
if (this.target.isReplayEnabled()) {
let dbg = this._toolbox.getPanel("jsdebugger");
if (!dbg) {
dbg = await this._toolbox.loadTool("jsdebugger");
}
this._replayResumed = !dbg.isPaused();
this.target.threadFront.on("paused", this.handleThreadPaused);
this.target.threadFront.on("resumed", this.handleThreadResumed);
}
await this.initInspectorFront();
this.target.on("will-navigate", this._onBeforeNavigate);
await Promise.all([
this._getCssProperties(),
this._getPageStyle(),
this._getDefaultSelection(),
this._getAccessibilityFront(),
this._getChangesFront(),
]);
// Store the URL of the target page prior to navigation in order to ensure
// telemetry counts in the Grid Inspector are not double counted on reload.
this.previousURL = this.target.url;
this.reflowTracker = new ReflowTracker(this.target);
this.styleChangeTracker = new InspectorStyleChangeTracker(this);
this._markupBox = this.panelDoc.getElementById("markup-box");
return this._deferredOpen();
},
async initInspectorFront() {
this.inspectorFront = await this.target.getFront("inspector");
this.highlighter = this.inspectorFront.highlighter;
this.walker = this.inspectorFront.walker;
},
get toolbox() {
return this._toolbox;
},
get highlighters() {
if (!this._highlighters) {
this._highlighters = new HighlightersOverlay(this);
}
return this._highlighters;
},
get isHighlighterReady() {
return !!this._highlighters;
},
get is3PaneModeEnabled() {
if (this.target.chrome) {
if (!this._is3PaneModeChromeEnabled) {
this._is3PaneModeChromeEnabled = Services.prefs.getBoolPref(
THREE_PANE_CHROME_ENABLED_PREF
);
}
return this._is3PaneModeChromeEnabled;
}
if (!this._is3PaneModeEnabled) {
this._is3PaneModeEnabled = Services.prefs.getBoolPref(
THREE_PANE_ENABLED_PREF
);
}
return this._is3PaneModeEnabled;
},
set is3PaneModeEnabled(value) {
if (this.target.chrome) {
this._is3PaneModeChromeEnabled = value;
Services.prefs.setBoolPref(
THREE_PANE_CHROME_ENABLED_PREF,
this._is3PaneModeChromeEnabled
);
} else {
this._is3PaneModeEnabled = value;
Services.prefs.setBoolPref(
THREE_PANE_ENABLED_PREF,
this._is3PaneModeEnabled
);
}
},
get search() {
if (!this._search) {
this._search = new InspectorSearch(
this,
this.searchBox,
this.searchClearButton
);
}
return this._search;
},
get selection() {
return this.toolbox.selection;
},
get cssProperties() {
return this._cssProperties.cssProperties;
},
/**
* Handle promise rejections for various asynchronous actions, and only log errors if
* the inspector panel still exists.
* This is useful to silence useless errors that happen when the inspector is closed
* while still initializing (and making protocol requests).
*/
_handleRejectionIfNotDestroyed: function(e) {
if (!this._destroyed) {
console.error(e);
}
},
_deferredOpen: async function() {
const onMarkupLoaded = this.once("markuploaded");
this._initMarkup();
this.isReady = false;
// Set the node front so that the markup and sidebar panels will have the selected
// nodeFront ready when they're initialized.
if (this._defaultNode) {
this.selection.setNodeFront(this._defaultNode, {
reason: "inspector-open",
});
}
// Setup the splitter before the sidebar is displayed so, we don't miss any events.
this.setupSplitter();
// We can display right panel with: tab bar, markup view and breadbrumb. Right after
// the splitter set the right and left panel sizes, in order to avoid resizing it
// during load of the inspector.
this.panelDoc.getElementById("inspector-main-content").style.visibility =
"visible";
// Setup the sidebar panels.
await this.setupSidebar();
await onMarkupLoaded;
this.isReady = true;
// All the components are initialized. Take care of the remaining initialization
// and setup.
this.breadcrumbs = new HTMLBreadcrumbs(this);
this.setupExtensionSidebars();
this.setupSearchBox();
await this.setupToolbar();
this.onNewSelection();
this.walker.on("new-root", this.onNewRoot);
this.toolbox.on("host-changed", this.onHostChanged);
this.selection.on("new-node-front", this.onNewSelection);
this.selection.on("detached-front", this.onDetached);
// Log the 3 pane inspector setting on inspector open. The question we want to answer
// is:
// "What proportion of users use the 3 pane vs 2 pane inspector on inspector open?"
this.telemetry.keyedScalarAdd(
THREE_PANE_ENABLED_SCALAR,
this.is3PaneModeEnabled,
1
);
this.emit("ready");
return this;
},
_onBeforeNavigate: function() {
this._defaultNode = null;
this.selection.setNodeFront(null);
this._destroyMarkup();
this._pendingSelection = null;
},
_getCssProperties: function() {
return initCssProperties(this.toolbox).then(cssProperties => {
this._cssProperties = cssProperties;
}, this._handleRejectionIfNotDestroyed);
},
_getAccessibilityFront: async function() {
this.accessibilityFront = await this.target.getFront("accessibility");
return this.accessibilityFront;
},
_getChangesFront: async function() {
// Get the Changes front, then call a method on it, which will instantiate
// the ChangesActor. We want the ChangesActor to be guaranteed available before
// the user makes any changes.
this.changesFront = await this.toolbox.target.getFront("changes");
await this.changesFront.start();
return this.changesFront;
},
_getDefaultSelection: function() {
// This may throw if the document is still loading and we are
// refering to a dead about:blank document
return this._getDefaultNodeForSelection().catch(
this._handleRejectionIfNotDestroyed
);
},
_getPageStyle: function() {
return this.inspectorFront.getPageStyle().then(pageStyle => {
this.pageStyle = pageStyle;
}, this._handleRejectionIfNotDestroyed);
},
/**
* Return a promise that will resolve to the default node for selection.
*/
_getDefaultNodeForSelection: function() {
if (this._defaultNode) {
return this._defaultNode;
}
const walker = this.walker;
let rootNode = null;
const pendingSelection = this._pendingSelection;
// A helper to tell if the target has or is about to navigate.
// this._pendingSelection changes on "will-navigate" and "new-root" events.
// When replaying, if the target is unpaused then we consider it to be
// navigating so that its tree will not be constructed.
const hasNavigated = () => {
return pendingSelection !== this._pendingSelection || this._replayResumed;
};
// If available, set either the previously selected node or the body
// as default selected, else set documentElement
return walker
.getRootNode()
.then(node => {
if (hasNavigated()) {
return promise.reject(
"navigated; resolution of _defaultNode aborted"
);
}
rootNode = node;
if (this.selectionCssSelector) {
return walker.querySelector(rootNode, this.selectionCssSelector);
}
return null;
})
.then(front => {
if (hasNavigated()) {
return promise.reject(
"navigated; resolution of _defaultNode aborted"
);
}
if (front) {
return front;
}
return walker.querySelector(rootNode, "body");
})
.then(front => {
if (hasNavigated()) {
return promise.reject(
"navigated; resolution of _defaultNode aborted"
);
}
if (front) {
return front;
}
return this.walker.documentElement();
})
.then(node => {
if (hasNavigated()) {
return promise.reject(
"navigated; resolution of _defaultNode aborted"
);
}
this._defaultNode = node;
return node;
});
},
/**
* Target getter.
*/
get target() {
return this._target;
},
/**
* Target setter.
*/
set target(value) {
this._target = value;
},
/**
* Hooks the searchbar to show result and auto completion suggestions.
*/
setupSearchBox: function() {
this.searchBox = this.panelDoc.getElementById("inspector-searchbox");
this.searchClearButton = this.panelDoc.getElementById(
"inspector-searchinput-clear"
);
this.searchResultsContainer = this.panelDoc.getElementById(
"inspector-searchlabel-container"
);
this.searchResultsLabel = this.panelDoc.getElementById(
"inspector-searchlabel"
);
this.searchBox.addEventListener(
"focus",
() => {
this.search.on("search-cleared", this._clearSearchResultsLabel);
this.search.on("search-result", this._updateSearchResultsLabel);
},
{ once: true }
);
this.createSearchBoxShortcuts();
},
createSearchBoxShortcuts() {
this.searchboxShortcuts = new KeyShortcuts({
window: this.panelDoc.defaultView,
// The inspector search shortcuts need to be available from everywhere in the
// inspector, and the inspector uses iframes (markupview, sidepanel webextensions).
// Use the chromeEventHandler as the target to catch events from all frames.
target: this.toolbox.getChromeEventHandler(),
});
const key = INSPECTOR_L10N.getStr("inspector.searchHTML.key");
this.searchboxShortcuts.on(key, event => {
// Prevent overriding same shortcut from the computed/rule views
if (
event.target.closest("#sidebar-panel-ruleview") ||
event.target.closest("#sidebar-panel-computedview")
) {
return;
}
event.preventDefault();
this.searchBox.focus();
});
},
get searchSuggestions() {
return this.search.autocompleter;
},
_clearSearchResultsLabel: function(result) {
return this._updateSearchResultsLabel(result, true);
},
_updateSearchResultsLabel: function(result, clear = false) {
let str = "";
if (!clear) {
if (result) {
str = INSPECTOR_L10N.getFormatStr(
"inspector.searchResultsCount2",
result.resultsIndex + 1,
result.resultsLength
);
} else {
str = INSPECTOR_L10N.getStr("inspector.searchResultsNone");
}
this.searchResultsContainer.hidden = false;
} else {
this.searchResultsContainer.hidden = true;
}
this.searchResultsLabel.textContent = str;
},
get React() {
return this._toolbox.React;
},
get ReactDOM() {
return this._toolbox.ReactDOM;
},
get ReactRedux() {
return this._toolbox.ReactRedux;
},
get browserRequire() {
return this._toolbox.browserRequire;
},
get InspectorTabPanel() {
if (!this._InspectorTabPanel) {
this._InspectorTabPanel = this.React.createFactory(
this.browserRequire(
"devtools/client/inspector/components/InspectorTabPanel"
)
);
}
return this._InspectorTabPanel;
},
get InspectorSplitBox() {
if (!this._InspectorSplitBox) {
this._InspectorSplitBox = this.React.createFactory(
this.browserRequire(
"devtools/client/shared/components/splitter/SplitBox"
)
);
}
return this._InspectorSplitBox;
},
get TabBar() {
if (!this._TabBar) {
this._TabBar = this.React.createFactory(
this.browserRequire("devtools/client/shared/components/tabs/TabBar")
);
}
return this._TabBar;
},
/**
* Check if the inspector should use the landscape mode.
*
* @return {Boolean} true if the inspector should be in landscape mode.
*/
useLandscapeMode: function() {
if (!this.panelDoc) {
return true;
}
const splitterBox = this.panelDoc.getElementById("inspector-splitter-box");
const { width } = window.windowUtils.getBoundsWithoutFlushing(splitterBox);
return this.is3PaneModeEnabled &&
(this.toolbox.hostType == Toolbox.HostType.LEFT ||
this.toolbox.hostType == Toolbox.HostType.RIGHT)
? width > SIDE_PORTAIT_MODE_WIDTH_THRESHOLD
: width > PORTRAIT_MODE_WIDTH_THRESHOLD;
},
/**
* Build Splitter located between the main and side area of
* the Inspector panel.
*/
setupSplitter: function() {
const { width, height, splitSidebarWidth } = this.getSidebarSize();
this.sidebarSplitBoxRef = this.React.createRef();
const splitter = this.InspectorSplitBox({
className: "inspector-sidebar-splitter",
initialWidth: width,
initialHeight: height,
minSize: "10%",
maxSize: "80%",
splitterSize: 1,
endPanelControl: true,
startPanel: this.InspectorTabPanel({
id: "inspector-main-content",
}),
endPanel: this.InspectorSplitBox({
initialWidth: splitSidebarWidth,
minSize: 10,
maxSize: "80%",
splitterSize: this.is3PaneModeEnabled ? 1 : 0,
endPanelControl: this.is3PaneModeEnabled,
startPanel: this.InspectorTabPanel({
id: "inspector-rules-container",
}),
endPanel: this.InspectorTabPanel({
id: "inspector-sidebar-container",
}),
ref: this.sidebarSplitBoxRef,
}),
vert: this.useLandscapeMode(),
onControlledPanelResized: this.onSidebarResized,
});
this.splitBox = this.ReactDOM.render(
splitter,
this.panelDoc.getElementById("inspector-splitter-box")
);
this.panelWin.addEventListener("resize", this.onPanelWindowResize, true);
},
_onLazyPanelResize: async function() {
// We can be called on a closed window because of the deferred task.
if (window.closed) {
return;
}
this.splitBox.setState({ vert: this.useLandscapeMode() });
this.emit("inspector-resize");
},
/**
* If Toolbox width is less than 600 px, the splitter changes its mode
* to `horizontal` to support portrait view.
*/
onPanelWindowResize: function() {
if (this.toolbox.currentToolId !== "inspector") {
return;
}
if (!this._lazyResizeHandler) {
this._lazyResizeHandler = new DeferredTask(
this._onLazyPanelResize.bind(this),
LAZY_RESIZE_INTERVAL_MS,
0
);
}
this._lazyResizeHandler.arm();
},
getSidebarSize: function() {
let width;
let height;
let splitSidebarWidth;
// Initialize splitter size from preferences.
try {
width = Services.prefs.getIntPref("devtools.toolsidebar-width.inspector");
height = Services.prefs.getIntPref(
"devtools.toolsidebar-height.inspector"
);
splitSidebarWidth = Services.prefs.getIntPref(
"devtools.toolsidebar-width.inspector.splitsidebar"
);
} catch (e) {
// Set width and height of the splitter. Only one
// value is really useful at a time depending on the current
// orientation (vertical/horizontal).
// Having both is supported by the splitter component.
width = this.is3PaneModeEnabled
? INITIAL_SIDEBAR_SIZE * 2
: INITIAL_SIDEBAR_SIZE;
height = INITIAL_SIDEBAR_SIZE;
splitSidebarWidth = INITIAL_SIDEBAR_SIZE;
}
return { width, height, splitSidebarWidth };
},
onSidebarHidden: function() {
// Store the current splitter size to preferences.
const state = this.splitBox.state;
Services.prefs.setIntPref(
"devtools.toolsidebar-width.inspector",
state.width
);
Services.prefs.setIntPref(
"devtools.toolsidebar-height.inspector",
state.height
);
Services.prefs.setIntPref(
"devtools.toolsidebar-width.inspector.splitsidebar",
this.sidebarSplitBoxRef.current.state.width
);
},
onSidebarResized: function(width, height) {
this.toolbox.emit("inspector-sidebar-resized", { width, height });
},
onSidebarSelect: function(toolId) {
// Save the currently selected sidebar panel
Services.prefs.setCharPref("devtools.inspector.activeSidebar", toolId);
// Then forces the panel creation by calling getPanel
// (This allows lazy loading the panels only once we select them)
this.getPanel(toolId);
this.toolbox.emit("inspector-sidebar-select", toolId);
},
onSidebarShown: function() {
const { width, height, splitSidebarWidth } = this.getSidebarSize();
this.splitBox.setState({ width, height });
this.sidebarSplitBoxRef.current.setState({ width: splitSidebarWidth });
},
async onSidebarToggle() {
this.is3PaneModeEnabled = !this.is3PaneModeEnabled;
await this.setupToolbar();
await this.addRuleView({ skipQueue: true });
},
/**
* Sets the inspector sidebar split box state. Shows the splitter inside the sidebar
* split box, specifies the end panel control and resizes the split box width depending
* on the width of the toolbox.
*/
setSidebarSplitBoxState() {
const toolboxWidth = this.panelDoc.getElementById("inspector-splitter-box")
.clientWidth;
// Get the inspector sidebar's (right panel in horizontal mode or bottom panel in
// vertical mode) width.
const sidebarWidth = this.splitBox.state.width;
// This variable represents the width of the right panel in horizontal mode or
// bottom-right panel in vertical mode width in 3 pane mode.
let sidebarSplitboxWidth;
if (this.useLandscapeMode()) {
// Whether or not doubling the inspector sidebar's (right panel in horizontal mode
// or bottom panel in vertical mode) width will be bigger than half of the
// toolbox's width.
const canDoubleSidebarWidth = sidebarWidth * 2 < toolboxWidth / 2;
// Resize the main split box's end panel that contains the middle and right panel.
// Attempts to resize the main split box's end panel to be double the size of the
// existing sidebar's width when switching to 3 pane mode. However, if the middle
// and right panel's width together is greater than half of the toolbox's width,
// split all 3 panels to be equally sized by resizing the end panel to be 2/3 of
// the current toolbox's width.
this.splitBox.setState({
width: canDoubleSidebarWidth
? sidebarWidth * 2
: (toolboxWidth * 2) / 3,
});
// In landscape/horizontal mode, set the right panel back to its original
// inspector sidebar width if we can double the sidebar width. Otherwise, set
// the width of the right panel to be 1/3 of the toolbox's width since all 3
// panels will be equally sized.
sidebarSplitboxWidth = canDoubleSidebarWidth
? sidebarWidth
: toolboxWidth / 3;
} else {
// In portrait/vertical mode, set the bottom-right panel to be 1/2 of the
// toolbox's width.
sidebarSplitboxWidth = toolboxWidth / 2;
}
// Show the splitter inside the sidebar split box. Sets the width of the inspector
// sidebar and specify that the end (right in horizontal or bottom-right in
// vertical) panel of the sidebar split box should be controlled when resizing.
this.sidebarSplitBoxRef.current.setState({
endPanelControl: true,
splitterSize: 1,
width: sidebarSplitboxWidth,
});
},
/**
* Adds the rule view to the middle (in landscape/horizontal mode) or bottom-left panel
* (in portrait/vertical mode) or inspector sidebar depending on whether or not it is 3
* pane mode. The default tab specifies whether or not the rule view should be selected.
* The defaultTab defaults to the rule view when reverting to the 2 pane mode and the
* rule view is being merged back into the inspector sidebar from middle/bottom-left
* panel. Otherwise, we specify the default tab when handling the sidebar setup.
*
* @params {String} defaultTab
* Thie id of the default tab for the sidebar.
*/
async addRuleView({ defaultTab = "ruleview", skipQueue = false } = {}) {
const ruleViewSidebar = this.sidebarSplitBoxRef.current.startPanelContainer;
if (this.is3PaneModeEnabled) {
// Convert to 3 pane mode by removing the rule view from the inspector sidebar
// and adding the rule view to the middle (in landscape/horizontal mode) or
// bottom-left (in portrait/vertical mode) panel.
ruleViewSidebar.style.display = "block";
this.setSidebarSplitBoxState();
// Force the rule view panel creation by calling getPanel
this.getPanel("ruleview");
await this.sidebar.removeTab("ruleview");
this.ruleViewSideBar.addExistingTab(
"ruleview",
INSPECTOR_L10N.getStr("inspector.sidebar.ruleViewTitle"),
true
);
this.ruleViewSideBar.show();
} else {
// Removes the rule view from the 3 pane mode and adds the rule view to the main
// inspector sidebar.
ruleViewSidebar.style.display = "none";
// Set the width of the split box (right panel in horziontal mode and bottom panel
// in vertical mode) to be the width of the inspector sidebar.
const splitterBox = this.panelDoc.getElementById(
"inspector-splitter-box"
);
this.splitBox.setState({
width: this.useLandscapeMode()
? this.sidebarSplitBoxRef.current.state.width
: splitterBox.clientWidth,
});
// Hide the splitter to prevent any drag events in the sidebar split box and
// specify that the end (right panel in horziontal mode or bottom panel in vertical
// mode) panel should be uncontrolled when resizing.
this.sidebarSplitBoxRef.current.setState({
endPanelControl: false,
splitterSize: 0,
});
this.ruleViewSideBar.hide();
await this.ruleViewSideBar.removeTab("ruleview");
if (skipQueue) {
this.sidebar.addExistingTab(
"ruleview",
INSPECTOR_L10N.getStr("inspector.sidebar.ruleViewTitle"),
defaultTab == "ruleview",
0
);
} else {
this.sidebar.queueExistingTab(
"ruleview",
INSPECTOR_L10N.getStr("inspector.sidebar.ruleViewTitle"),
defaultTab == "ruleview",
0
);
}
}
this.emit("ruleview-added");
},
/**
* Lazily get and create panel instances displayed in the sidebar
*/
getPanel: function(id) {
if (this._panels.has(id)) {
return this._panels.get(id);
}
let panel;
switch (id) {
case "animationinspector":
const AnimationInspector = this.browserRequire(
"devtools/client/inspector/animation/animation"
);
panel = new AnimationInspector(this, this.panelWin);
break;
case "boxmodel":
// box-model isn't a panel on its own, it used to, now it is being used by
// the layout view which retrieves an instance via getPanel.
const BoxModel = require("devtools/client/inspector/boxmodel/box-model");
panel = new BoxModel(this, this.panelWin);
break;
case "changesview":
const ChangesView = this.browserRequire(
"devtools/client/inspector/changes/ChangesView"
);
panel = new ChangesView(this, this.panelWin);
break;
case "computedview":
const { ComputedViewTool } = this.browserRequire(
"devtools/client/inspector/computed/computed"
);
panel = new ComputedViewTool(this, this.panelWin);
break;
case "fontinspector":
const FontInspector = this.browserRequire(
"devtools/client/inspector/fonts/fonts"
);
panel = new FontInspector(this, this.panelWin);
break;
case "layoutview":
const LayoutView = this.browserRequire(
"devtools/client/inspector/layout/layout"
);
panel = new LayoutView(this, this.panelWin);
break;
case "newruleview":
const RulesView = this.browserRequire(
"devtools/client/inspector/rules/new-rules"
);
panel = new RulesView(this, this.panelWin);
break;
case "ruleview":
const {
RuleViewTool,
} = require("devtools/client/inspector/rules/rules");
panel = new RuleViewTool(this, this.panelWin);
break;
default:
// This is a custom panel or a non lazy-loaded one.
return null;
}
if (panel) {
this._panels.set(id, panel);
}
return panel;
},
/**
* Build the sidebar.
*/
async setupSidebar() {
const sidebar = this.panelDoc.getElementById("inspector-sidebar");
const options = {
showAllTabsMenu: true,
sidebarToggleButton: {
collapsed: !this.is3PaneModeEnabled,
collapsePaneTitle: INSPECTOR_L10N.getStr("inspector.hideThreePaneMode"),
expandPaneTitle: INSPECTOR_L10N.getStr("inspector.showThreePaneMode"),
onClick: this.onSidebarToggle,
},
};
this.sidebar = new ToolSidebar(sidebar, this, "inspector", options);
this.sidebar.on("select", this.onSidebarSelect);
const ruleSideBar = this.panelDoc.getElementById("inspector-rules-sidebar");
this.ruleViewSideBar = new ToolSidebar(ruleSideBar, this, "inspector", {
hideTabstripe: true,
});
// defaultTab may also be an empty string or a tab id that doesn't exist anymore
// (e.g. it was a tab registered by an addon that has been uninstalled).
let defaultTab = Services.prefs.getCharPref(
"devtools.inspector.activeSidebar"
);
if (this.is3PaneModeEnabled && defaultTab === "ruleview") {
defaultTab = "layoutview";
}
// Append all side panels
await this.addRuleView({ defaultTab });
// Inspector sidebar panels in order of appearance.
const sidebarPanels = [
{
id: "layoutview",
title: INSPECTOR_L10N.getStr("inspector.sidebar.layoutViewTitle2"),
},
{
id: "computedview",
title: INSPECTOR_L10N.getStr("inspector.sidebar.computedViewTitle"),
},
{
id: "changesview",
title: INSPECTOR_L10N.getStr("inspector.sidebar.changesViewTitle"),
},
{
id: "fontinspector",
title: INSPECTOR_L10N.getStr("inspector.sidebar.fontInspectorTitle"),
},
{
id: "animationinspector",
title: INSPECTOR_L10N.getStr(
"inspector.sidebar.animationInspectorTitle"
),
},
];
if (
Services.prefs.getBoolPref("devtools.inspector.new-rulesview.enabled")
) {
sidebarPanels.push({
id: "newruleview",
title: INSPECTOR_L10N.getStr("inspector.sidebar.ruleViewTitle"),
});
}
for (const { id, title } of sidebarPanels) {
// The Computed panel is not a React-based panel. We pick its element container from
// the DOM and wrap it in a React component (InspectorTabPanel) so it behaves like
// other panels when using the Inspector's tool sidebar.
if (id === "computedview") {
this.sidebar.queueExistingTab(id, title, defaultTab === id);
} else {
// When `panel` is a function, it is called when the tab should render. It is
// expected to return a React component to populate the tab's content area.
// Calling this method on-demand allows us to lazy-load the requested panel.
this.sidebar.queueTab(
id,
title,
{
props: {
id,
title,
},
panel: () => {
return this.getPanel(id).provider;
},
},
defaultTab === id
);
}
}
this.sidebar.addAllQueuedTabs();
// Persist splitter state in preferences.
this.sidebar.on("show", this.onSidebarShown);
this.sidebar.on("hide", this.onSidebarHidden);
this.sidebar.on("destroy", this.onSidebarHidden);
this.sidebar.show();
},
/**
* Setup any extension sidebar already registered to the toolbox when the inspector.
* has been created for the first time.
*/
setupExtensionSidebars() {
for (const [sidebarId, { title }] of this.toolbox
.inspectorExtensionSidebars) {
this.addExtensionSidebar(sidebarId, { title });
}
},
/**
* Create a side-panel tab controlled by an extension
* using the devtools.panels.elements.createSidebarPane and sidebar object API
*
* @param {String} id
* An unique id for the sidebar tab.
* @param {Object} options
* @param {String} options.title
* The tab title
*/
addExtensionSidebar: function(id, { title }) {
if (this._panels.has(id)) {
throw new Error(
`Cannot create an extension sidebar for the existent id: ${id}`
);
}
const extensionSidebar = new ExtensionSidebar(this, { id, title });
// TODO(rpl): pass some extension metadata (e.g. extension name and icon) to customize
// the render of the extension title (e.g. use the icon in the sidebar and show the
// extension name in a tooltip).
this.addSidebarTab(id, title, extensionSidebar.provider, false);
this._panels.set(id, extensionSidebar);
// Emit the created ExtensionSidebar instance to the listeners registered
// on the toolbox by the "devtools.panels.elements" WebExtensions API.
this.toolbox.emit(`extension-sidebar-created-${id}`, extensionSidebar);
},
/**
* Remove and destroy a side-panel tab controlled by an extension (e.g. when the
* extension has been disable/uninstalled while the toolbox and inspector were
* still open).
*
* @param {String} id
* The id of the sidebar tab to destroy.
*/
removeExtensionSidebar: function(id) {
if (!this._panels.has(id)) {
throw new Error(`Unable to find a sidebar panel with id "${id}"`);
}
const panel = this._panels.get(id);
if (!(panel instanceof ExtensionSidebar)) {
throw new Error(
`The sidebar panel with id "${id}" is not an ExtensionSidebar`
);
}
this._panels.delete(id);
this.sidebar.removeTab(id);
panel.destroy();
},
/**
* Register a side-panel tab. This API can be used outside of
* DevTools (e.g. from an extension) as well as by DevTools
* code base.
*
* @param {string} tab uniq id
* @param {string} title tab title
* @param {React.Component} panel component. See `InspectorPanelTab` as an example.
* @param {boolean} selected true if the panel should be selected
*/
addSidebarTab: function(id, title, panel, selected) {
this.sidebar.addTab(id, title, panel, selected);
},
/**
* Method to check whether the document is a HTML document and
* pickColorFromPage method is available or not.
*
* @return {Boolean} true if the eyedropper highlighter is supported by the current
* document.
*/
async supportsEyeDropper() {
try {
return await this.inspectorFront.supportsHighlighters();
} catch (e) {
console.error(e);
return false;
}
},
async setupToolbar() {
this.teardownToolbar();
// Setup the add-node button.
this.addNode = this.addNode.bind(this);
this.addNodeButton = this.panelDoc.getElementById(
"inspector-element-add-button"
);
this.addNodeButton.addEventListener("click", this.addNode);
// Setup the eye-dropper icon if we're in an HTML document and we have actor support.
const canShowEyeDropper = await this.supportsEyeDropper();
// Bail out if the inspector was destroyed in the meantime and panelDoc is no longer
// available.
if (!this.panelDoc) {
return;
}
if (canShowEyeDropper) {
this.onEyeDropperDone = this.onEyeDropperDone.bind(this);
this.onEyeDropperButtonClicked = this.onEyeDropperButtonClicked.bind(
this
);
this.eyeDropperButton = this.panelDoc.getElementById(
"inspector-eyedropper-toggle"
);
this.eyeDropperButton.disabled = false;
this.eyeDropperButton.title = INSPECTOR_L10N.getStr(
"inspector.eyedropper.label"
);
this.eyeDropperButton.addEventListener(
"click",
this.onEyeDropperButtonClicked
);
} else {
const eyeDropperButton = this.panelDoc.getElementById(
"inspector-eyedropper-toggle"
);
eyeDropperButton.disabled = true;
eyeDropperButton.title = INSPECTOR_L10N.getStr(
"eyedropper.disabled.title"
);
}
this.emit("inspector-toolbar-updated");
},
teardownToolbar: function() {
if (this.addNodeButton) {
this.addNodeButton.removeEventListener("click", this.addNode);
this.addNodeButton = null;
}
if (this.eyeDropperButton) {
this.eyeDropperButton.removeEventListener(
"click",
this.onEyeDropperButtonClicked
);
this.eyeDropperButton = null;
}
},
/**
* Reset the inspector on new root mutation.
*/
onNewRoot: function() {
// Record new-root timing for telemetry
this._newRootStart = this.panelWin.performance.now();
this._defaultNode = null;
this.selection.setNodeFront(null);
this._destroyMarkup();
const onNodeSelected = defaultNode => {
// Cancel this promise resolution as a new one had
// been queued up.
if (this._pendingSelection != onNodeSelected) {
return;
}
this._pendingSelection = null;
this.selection.setNodeFront(defaultNode, { reason: "navigateaway" });
this.once("markuploaded", this.onMarkupLoaded);
this._initMarkup();
// Setup the toolbar again, since its content may depend on the current document.
this.setupToolbar();
};
this._pendingSelection = onNodeSelected;
this._getDefaultNodeForSelection().then(
onNodeSelected,
this._handleRejectionIfNotDestroyed
);
},
/**
* When replaying, reset the inspector whenever the target pauses.
*/
handleThreadPaused() {
this._replayResumed = false;
this.onNewRoot();
},
/**
* When replaying, reset the inspector whenever the target resumes.
*/
handleThreadResumed() {
this._replayResumed = true;
this.onNewRoot();
},
/**
* Handler for "markuploaded" event fired on a new root mutation and after the markup
* view is initialized. Expands the current selected node and restores the saved
* highlighter state.
*/
async onMarkupLoaded() {
if (!this.markup) {
return;
}
const onExpand = this.markup.expandNode(this.selection.nodeFront);
// Restore the highlighter states prior to emitting "new-root".
if (this._highlighters) {
await Promise.all([
this.highlighters.restoreFlexboxState(),
this.highlighters.restoreGridState(),
]);
}
this.emit("new-root");
// Wait for full expand of the selected node in order to ensure
// the markup view is fully emitted before firing 'reloaded'.
// 'reloaded' is used to know when the panel is fully updated
// after a page reload.
await onExpand;
this.emit("reloaded");
// Record the time between new-root event and inspector fully loaded.
if (this._newRootStart) {
// Only log the timing when inspector is not destroyed and is in foreground.
if (this.toolbox && this.toolbox.currentToolId == "inspector") {
const delay = this.panelWin.performance.now() - this._newRootStart;
const telemetryKey = "DEVTOOLS_INSPECTOR_NEW_ROOT_TO_RELOAD_DELAY_MS";
const histogram = this.telemetry.getHistogramById(telemetryKey);
histogram.add(delay);
}
delete this._newRootStart;
}
},
_selectionCssSelector: null,
/**
* Set the currently selected node unique css selector.
* Will store the current target url along with it to allow pre-selection at
* reload
*/
set selectionCssSelector(cssSelector = null) {
if (this._destroyed) {
return;
}
this._selectionCssSelector = {
selector: cssSelector,
url: this._target.url,
};
},
/**
* Get the current selection unique css selector if any, that is, if a node
* is actually selected and that node has been selected while on the same url
*/
get selectionCssSelector() {
if (
this._selectionCssSelector &&
this._selectionCssSelector.url === this._target.url
) {
return this._selectionCssSelector.selector;
}
return null;
},
/**
* On any new selection made by the user, store the unique css selector
* of the selected node so it can be restored after reload of the same page
*/
updateSelectionCssSelector() {
if (this.selection.isElementNode()) {
this.selection.nodeFront.getUniqueSelector().then(selector => {
this.selectionCssSelector = selector;
}, this._handleRejectionIfNotDestroyed);
}
},
/**
* Can a new HTML element be inserted into the currently selected element?
* @return {Boolean}
*/
canAddHTMLChild: function() {
const selection = this.selection;
// Don't allow to insert an element into these elements. This should only
// contain elements where walker.insertAdjacentHTML has no effect.
const invalidTagNames = ["html", "iframe"];
return (
selection.isHTMLNode() &&
selection.isElementNode() &&
!selection.isPseudoElementNode() &&
!selection.isAnonymousNode() &&
!invalidTagNames.includes(selection.nodeFront.nodeName.toLowerCase())
);
},
/**
* Update the state of the add button in the toolbar depending on the current selection.
*/
updateAddElementButton() {
const btn = this.panelDoc.getElementById("inspector-element-add-button");
if (this.canAddHTMLChild()) {
btn.removeAttribute("disabled");
} else {
btn.setAttribute("disabled", "true");
}
},
/**
* Handler for the "host-changed" event from the toolbox. Resets the inspector
* sidebar sizes when the toolbox host type changes.
*/
async onHostChanged() {
// Eagerly call our resize handling code to process the fact that we
// switched hosts. If we don't do this, we'll wait for resize events + 200ms
// to have passed, which causes the old layout to noticeably show up in the
// new host, followed by the updated one.
await this._onLazyPanelResize();
// Note that we may have been destroyed by now, especially in tests, so we
// need to check if that's happened before touching anything else.
if (!this.target || !this.is3PaneModeEnabled) {
return;
}
// When changing hosts, the toolbox chromeEventHandler might change, for instance when
// switching from docked to window hosts. Recreate the searchbox shortcuts.
this.searchboxShortcuts.destroy();
this.createSearchBoxShortcuts();
this.setSidebarSplitBoxState();
},
/**
* When a new node is selected.
*/
onNewSelection: function(value, reason) {
if (reason === "selection-destroy") {
return;
}
this.updateAddElementButton();
this.updateSelectionCssSelector();
const selfUpdate = this.updating("inspector-panel");
executeSoon(() => {
try {
selfUpdate(this.selection.nodeFront);
this.telemetry.scalarAdd(TELEMETRY_SCALAR_NODE_SELECTION_COUNT, 1);
} catch (ex) {
console.error(ex);
}
});
},
/**
* Delay the "inspector-updated" notification while a tool
* is updating itself. Returns a function that must be
* invoked when the tool is done updating with the node
* that the tool is viewing.
*/
updating: function(name) {
if (
this._updateProgress &&
this._updateProgress.node != this.selection.nodeFront
) {
this.cancelUpdate();
}
if (!this._updateProgress) {
// Start an update in progress.
const self = this;
this._updateProgress = {
node: this.selection.nodeFront,
outstanding: new Set(),
checkDone: function() {
if (this !== self._updateProgress) {
return;
}
// Cancel update if there is no `selection` anymore.
// It can happen if the inspector panel is already destroyed.
if (!self.selection || this.node !== self.selection.nodeFront) {
self.cancelUpdate();
return;
}
if (this.outstanding.size !== 0) {
return;
}
self._updateProgress = null;
self.emit("inspector-updated", name);
},
};
}
const progress = this._updateProgress;
const done = function() {
progress.outstanding.delete(done);
progress.checkDone();
};
progress.outstanding.add(done);
return done;
},
/**
* Cancel notification of inspector updates.
*/
cancelUpdate: function() {
this._updateProgress = null;
},
/**
* When a node is deleted, select its parent node or the defaultNode if no
* parent is found (may happen when deleting an iframe inside which the
* node was selected).
*/
onDetached: function(parentNode) {
this.breadcrumbs.cutAfter(this.breadcrumbs.indexOf(parentNode));
const nodeFront = parentNode ? parentNode : this._defaultNode;
this.selection.setNodeFront(nodeFront, { reason: "detached" });
},
/**
* Destroy the inspector.
*/
destroy: function() {
if (this._destroyed) {
return;
}
this._destroyed = true;
this._target.threadFront.off("paused", this.handleThreadPaused);
this._target.threadFront.off("resumed", this.handleThreadResumed);
if (this.walker) {
this.walker.off("new-root", this.onNewRoot);
this.pageStyle = null;
}
this.cancelUpdate();
this.sidebar.destroy();
this.panelWin.removeEventListener("resize", this.onPanelWindowResize, true);
this.selection.off("new-node-front", this.onNewSelection);
this.selection.off("detached-front", this.onDetached);
this.sidebar.off("select", this.onSidebarSelect);
this.sidebar.off("show", this.onSidebarShown);
this.sidebar.off("hide", this.onSidebarHidden);
this.sidebar.off("destroy", this.onSidebarHidden);
this.target.off("will-navigate", this._onBeforeNavigate);
for (const [, panel] of this._panels) {
panel.destroy();
}
this._panels.clear();
if (this._highlighters) {
this._highlighters.destroy();
this._highlighters = null;
}
if (this._markupFrame) {
this._markupFrame.removeEventListener(
"load",
this._onMarkupFrameLoad,
true
);
}
if (this._search) {
this._search.destroy();
this._search = null;
}
this.sidebar.destroy();
if (this.ruleViewSideBar) {
this.ruleViewSideBar.destroy();
}
this._destroyMarkup();
this.teardownToolbar();
this.breadcrumbs.destroy();
this.reflowTracker.destroy();
this.styleChangeTracker.destroy();
this.searchboxShortcuts.destroy();
this._is3PaneModeChromeEnabled = null;
this._is3PaneModeEnabled = null;
this._markupBox = null;
this._markupFrame = null;
this._target = null;
this._toolbox = null;
this.breadcrumbs = null;
this.panelDoc = null;
this.panelWin.inspector = null;
this.panelWin = null;
this.resultsLength = null;
this.searchBox = null;
this.show3PaneTooltip = null;
this.sidebar = null;
this.store = null;
this.telemetry = null;
},
_initMarkup: function() {
if (!this._markupFrame) {
this._markupFrame = this.panelDoc.createElement("iframe");
this._markupFrame.setAttribute(
"aria-label",
INSPECTOR_L10N.getStr("inspector.panelLabel.markupView")
);
this._markupFrame.setAttribute("flex", "1");
// This is needed to enable tooltips inside the iframe document.
this._markupFrame.setAttribute("tooltip", "aHTMLTooltip");
this._markupBox.style.visibility = "hidden";
this._markupBox.appendChild(this._markupFrame);
this._markupFrame.addEventListener("load", this._onMarkupFrameLoad, true);
this._markupFrame.setAttribute("src", "markup/markup.xhtml");
} else {
this._onMarkupFrameLoad();
}
},
_onMarkupFrameLoad: function() {
this._markupFrame.removeEventListener(
"load",
this._onMarkupFrameLoad,
true
);
this._markupFrame.contentWindow.focus();
this._markupBox.style.visibility = "visible";
this.markup = new MarkupView(this, this._markupFrame, this._toolbox.win);
this.emit("markuploaded");
},
_destroyMarkup: function() {
let destroyPromise;
if (this.markup) {
destroyPromise = this.markup.destroy();
this.markup = null;
} else {
destroyPromise = promise.resolve();
}
this._markupBox.style.visibility = "hidden";
return destroyPromise;
},
onEyeDropperButtonClicked: function() {
this.eyeDropperButton.classList.contains("checked")
? this.hideEyeDropper()
: this.showEyeDropper();
},
startEyeDropperListeners: function() {
this.inspectorFront.once("color-pick-canceled", this.onEyeDropperDone);
this.inspectorFront.once("color-picked", this.onEyeDropperDone);
this.walker.once("new-root", this.onEyeDropperDone);
},
stopEyeDropperListeners: function() {
this.inspectorFront.off("color-pick-canceled", this.onEyeDropperDone);
this.inspectorFront.off("color-picked", this.onEyeDropperDone);
this.walker.off("new-root", this.onEyeDropperDone);
},
onEyeDropperDone: function() {
this.eyeDropperButton.classList.remove("checked");
this.stopEyeDropperListeners();
},
/**
* Show the eyedropper on the page.
* @return {Promise} resolves when the eyedropper is visible.
*/
showEyeDropper: function() {
// The eyedropper button doesn't exist, most probably because the actor doesn't
// support the pickColorFromPage, or because the page isn't HTML.
if (!this.eyeDropperButton) {
return null;
}
this.telemetry.scalarSet(TELEMETRY_EYEDROPPER_OPENED, 1);
this.eyeDropperButton.classList.add("checked");
this.startEyeDropperListeners();
return this.inspectorFront
.pickColorFromPage({ copyOnSelect: true })
.catch(console.error);
},
/**
* Hide the eyedropper.
* @return {Promise} resolves when the eyedropper is hidden.
*/
hideEyeDropper: function() {
// The eyedropper button doesn't exist, most probably because the page isn't HTML.
if (!this.eyeDropperButton) {
return null;
}
this.eyeDropperButton.classList.remove("checked");
this.stopEyeDropperListeners();
return this.inspectorFront.cancelPickColorFromPage().catch(console.error);
},
/**
* Create a new node as the last child of the current selection, expand the
* parent and select the new node.
*/
async addNode() {
if (!this.canAddHTMLChild()) {
return;
}
const html = "<div></div>";
// Insert the html and expect a childList markup mutation.
const onMutations = this.once("markupmutation");
await this.walker.insertAdjacentHTML(
this.selection.nodeFront,
"beforeEnd",
html
);
await onMutations;
// Expand the parent node.
this.markup.expandNode(this.selection.nodeFront);
},
/**
* Toggle a pseudo class.
*/
togglePseudoClass: function(pseudo) {
if (this.selection.isElementNode()) {
const node = this.selection.nodeFront;
if (node.hasPseudoClassLock(pseudo)) {
return this.walker.removePseudoClassLock(node, pseudo, {
parents: true,
});
}
const hierarchical = pseudo == ":hover" || pseudo == ":active";
return this.walker.addPseudoClassLock(node, pseudo, {
parents: hierarchical,
});
}
return promise.resolve();
},
/**
* Initiate screenshot command on selected node.
*/
async screenshotNode() {
// Bug 1332936 - it's possible to call `screenshotNode` while the BoxModel highlighter
// is still visible, therefore showing it in the picture.
// To avoid that, we have to hide it before taking the screenshot. The `hideBoxModel`
// will do that, calling `hide` for the highlighter only if previously shown.
await this.highlighter.hideBoxModel();
const clipboardEnabled = Services.prefs.getBoolPref(
"devtools.screenshot.clipboard.enabled"
);
const args = {
file: true,
nodeActorID: this.selection.nodeFront.actorID,
clipboard: clipboardEnabled,
};
const screenshotFront = await this.target.getFront("screenshot");
const screenshot = await screenshotFront.capture(args);
await saveScreenshot(this.panelWin, args, screenshot);
},
/**
* Returns an object containing the shared handler functions used in the box
* model and grid React components.
*/
getCommonComponentProps() {
return {
setSelectedNode: this.selection.setNodeFront,
onShowBoxModelHighlighterForNode: this.onShowBoxModelHighlighterForNode,
};
},
/**
* Shows the box-model highlighter on the element corresponding to the provided
* NodeFront.
*
* @param {NodeFront} nodeFront
* The node to highlight.
* @param {Object} options
* Options passed to the highlighter actor.
*/
onShowBoxModelHighlighterForNode(nodeFront, options) {
nodeFront.highlighterFront.highlight(nodeFront, options);
},
async inspectNodeActor(nodeActor, inspectFromAnnotation) {
// TODO: Bug1574506 - Use the contextual WalkerFront for gripToNodeFront.
const nodeFront = await this.walker.gripToNodeFront({ actor: nodeActor });
if (!nodeFront) {
console.error(
"The object cannot be linked to the inspector, the " +
"corresponding nodeFront could not be found."
);
return false;
}
const isAttached = await this.walker.isInDOMTree(nodeFront);
if (!isAttached) {
console.error("Selected DOMNode is not attached to the document tree.");
return false;
}
await this.selection.setNodeFront(nodeFront, {
reason: inspectFromAnnotation,
});
return true;
},
};
exports.Inspector = Inspector;