зеркало из https://github.com/mozilla/gecko-dev.git
1418 строки
44 KiB
JavaScript
1418 строки
44 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const protocol = require("resource://devtools/shared/protocol.js");
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const { getCSSLexer } = require("resource://devtools/shared/css/lexer.js");
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const {
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LongStringActor,
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} = require("resource://devtools/server/actors/string.js");
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const InspectorUtils = require("InspectorUtils");
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const TrackChangeEmitter = require("resource://devtools/server/actors/utils/track-change-emitter.js");
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const {
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pageStyleSpec,
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} = require("resource://devtools/shared/specs/page-style.js");
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const {
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style: { ELEMENT_STYLE },
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} = require("resource://devtools/shared/constants.js");
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const {
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hasStyleSheetWatcherSupportForTarget,
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} = require("resource://devtools/server/actors/utils/stylesheets-manager.js");
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loader.lazyRequireGetter(
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this,
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"StyleRuleActor",
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"resource://devtools/server/actors/style-rule.js",
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true
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);
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loader.lazyRequireGetter(
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this,
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"getFontPreviewData",
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"resource://devtools/server/actors/utils/style-utils.js",
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true
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);
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loader.lazyRequireGetter(
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this,
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"CssLogic",
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"resource://devtools/server/actors/inspector/css-logic.js",
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true
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);
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loader.lazyRequireGetter(
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this,
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"SharedCssLogic",
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"resource://devtools/shared/inspector/css-logic.js"
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);
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loader.lazyRequireGetter(
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this,
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"getDefinedGeometryProperties",
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"resource://devtools/server/actors/highlighters/geometry-editor.js",
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true
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);
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loader.lazyRequireGetter(
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this,
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"UPDATE_GENERAL",
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"resource://devtools/server/actors/style-sheet.js",
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true
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);
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loader.lazyGetter(this, "PSEUDO_ELEMENTS", () => {
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return InspectorUtils.getCSSPseudoElementNames();
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});
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loader.lazyGetter(this, "FONT_VARIATIONS_ENABLED", () => {
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return Services.prefs.getBoolPref("layout.css.font-variations.enabled");
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});
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const XHTML_NS = "http://www.w3.org/1999/xhtml";
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const NORMAL_FONT_WEIGHT = 400;
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const BOLD_FONT_WEIGHT = 700;
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/**
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* The PageStyle actor lets the client look at the styles on a page, as
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* they are applied to a given node.
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*/
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var PageStyleActor = protocol.ActorClassWithSpec(pageStyleSpec, {
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/**
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* Create a PageStyleActor.
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*
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* @param inspector
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* The InspectorActor that owns this PageStyleActor.
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*
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* @constructor
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*/
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initialize(inspector) {
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protocol.Actor.prototype.initialize.call(this, null);
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this.inspector = inspector;
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if (!this.inspector.walker) {
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throw Error(
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"The inspector's WalkerActor must be created before " +
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"creating a PageStyleActor."
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);
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}
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this.walker = inspector.walker;
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this.cssLogic = new CssLogic();
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// Stores the association of DOM objects -> actors
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this.refMap = new Map();
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// Latest node queried for its applied styles.
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this.selectedElement = null;
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// Maps document elements to style elements, used to add new rules.
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this.styleElements = new WeakMap();
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this.onFrameUnload = this.onFrameUnload.bind(this);
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this.onStyleSheetAdded = this.onStyleSheetAdded.bind(this);
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this.inspector.targetActor.on("will-navigate", this.onFrameUnload);
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this.inspector.targetActor.on("stylesheet-added", this.onStyleSheetAdded);
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this._observedRules = [];
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this._styleApplied = this._styleApplied.bind(this);
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this._watchedSheets = new Set();
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this.styleSheetsManager = this.inspector.targetActor.getStyleSheetManager();
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this.hasStyleSheetWatcherSupport = hasStyleSheetWatcherSupportForTarget(
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this.inspector.targetActor
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);
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if (this.hasStyleSheetWatcherSupport) {
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this._onStylesheetUpdated = this._onStylesheetUpdated.bind(this);
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this.styleSheetsManager.on(
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"stylesheet-updated",
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this._onStylesheetUpdated
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);
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}
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},
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destroy() {
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if (!this.walker) {
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return;
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}
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protocol.Actor.prototype.destroy.call(this);
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this.inspector.targetActor.off("will-navigate", this.onFrameUnload);
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this.inspector.targetActor.off("stylesheet-added", this.onStyleSheetAdded);
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this.inspector = null;
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this.walker = null;
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this.refMap = null;
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this.selectedElement = null;
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this.cssLogic = null;
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this.styleElements = null;
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for (const sheet of this._watchedSheets) {
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sheet.off("style-applied", this._styleApplied);
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}
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this._observedRules = [];
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this._watchedSheets.clear();
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},
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get conn() {
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return this.inspector.conn;
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},
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get ownerWindow() {
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return this.inspector.targetActor.window;
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},
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form() {
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// We need to use CSS from the inspected window in order to use CSS.supports() and
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// detect the right platform features from there.
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const CSS = this.inspector.targetActor.window.CSS;
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return {
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actor: this.actorID,
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traits: {
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// Whether the page supports values of font-stretch from CSS Fonts Level 4.
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fontStretchLevel4: CSS.supports("font-stretch: 100%"),
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// Whether the page supports values of font-style from CSS Fonts Level 4.
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fontStyleLevel4: CSS.supports("font-style: oblique 20deg"),
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// Whether getAllUsedFontFaces/getUsedFontFaces accepts the includeVariations
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// argument.
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fontVariations: FONT_VARIATIONS_ENABLED,
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// Whether the page supports values of font-weight from CSS Fonts Level 4.
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// font-weight at CSS Fonts Level 4 accepts values in increments of 1 rather
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// than 100. However, CSS.supports() returns false positives, so we guard with the
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// expected support of font-stretch at CSS Fonts Level 4.
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fontWeightLevel4:
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CSS.supports("font-weight: 1") && CSS.supports("font-stretch: 100%"),
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},
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};
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},
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/**
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* Called when a style sheet is updated.
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*/
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_styleApplied(kind, styleSheet) {
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// No matter what kind of update is done, we need to invalidate
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// the keyframe cache.
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this.cssLogic.reset();
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if (kind === UPDATE_GENERAL) {
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this.emit("stylesheet-updated");
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}
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},
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/**
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* Return or create a StyleRuleActor for the given item.
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* @param item Either a CSSStyleRule or a DOM element.
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*/
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_styleRef(item) {
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if (this.refMap.has(item)) {
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return this.refMap.get(item);
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}
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const actor = StyleRuleActor(this, item);
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this.manage(actor);
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this.refMap.set(item, actor);
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return actor;
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},
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/**
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* Update the association between a StyleRuleActor and its
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* corresponding item. This is used when a StyleRuleActor updates
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* as style sheet and starts using a new rule.
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*
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* @param oldItem The old association; either a CSSStyleRule or a
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* DOM element.
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* @param item Either a CSSStyleRule or a DOM element.
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* @param actor a StyleRuleActor
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*/
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updateStyleRef(oldItem, item, actor) {
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this.refMap.delete(oldItem);
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this.refMap.set(item, actor);
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},
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/**
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* Return or create a StyleSheetActor for the given CSSStyleSheet.
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* @param {CSSStyleSheet} sheet
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* The style sheet to create an actor for.
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* @return {StyleSheetActor}
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* The actor for this style sheet
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*/
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_sheetRef(sheet) {
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if (this.hasStyleSheetWatcherSupport) {
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// We need to clean up this function in bug 1672090 when server-side stylesheet
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// watcher is enabled.
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console.warn(
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"This function should not be called when server-side stylesheet watcher is enabled"
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);
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}
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const targetActor = this.inspector.targetActor;
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const actor = targetActor.createStyleSheetActor(sheet);
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return actor;
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},
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/**
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* Get the StyleRuleActor matching the given rule id or null if no match is found.
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*
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* @param {String} ruleId
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* Actor ID of the StyleRuleActor
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* @return {StyleRuleActor|null}
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*/
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getRule(ruleId) {
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let match = null;
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for (const actor of this.refMap.values()) {
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if (actor.actorID === ruleId) {
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match = actor;
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continue;
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}
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}
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return match;
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},
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/**
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* Get the computed style for a node.
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*
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* @param NodeActor node
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* @param object options
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* `filter`: A string filter that affects the "matched" handling.
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* 'user': Include properties from user style sheets.
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* 'ua': Include properties from user and user-agent sheets.
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* Default value is 'ua'
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* `markMatched`: true if you want the 'matched' property to be added
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* when a computed property has been modified by a style included
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* by `filter`.
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* `onlyMatched`: true if unmatched properties shouldn't be included.
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* `filterProperties`: An array of properties names that you would like
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* returned.
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*
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* @returns a JSON blob with the following form:
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* {
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* "property-name": {
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* value: "property-value",
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* priority: "!important" <optional>
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* matched: <true if there are matched selectors for this value>
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* },
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* ...
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* }
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*/
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getComputed(node, options) {
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const ret = Object.create(null);
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this.cssLogic.sourceFilter = options.filter || SharedCssLogic.FILTER.UA;
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this.cssLogic.highlight(node.rawNode);
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const computed = this.cssLogic.computedStyle || [];
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Array.prototype.forEach.call(computed, name => {
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if (
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Array.isArray(options.filterProperties) &&
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!options.filterProperties.includes(name)
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) {
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return;
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}
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ret[name] = {
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value: computed.getPropertyValue(name),
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priority: computed.getPropertyPriority(name) || undefined,
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};
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});
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if (options.markMatched || options.onlyMatched) {
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const matched = this.cssLogic.hasMatchedSelectors(Object.keys(ret));
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for (const key in ret) {
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if (matched[key]) {
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ret[key].matched = options.markMatched ? true : undefined;
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} else if (options.onlyMatched) {
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delete ret[key];
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}
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}
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}
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return ret;
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},
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/**
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* Get all the fonts from a page.
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*
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* @param object options
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* `includePreviews`: Whether to also return image previews of the fonts.
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* `previewText`: The text to display in the previews.
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* `previewFontSize`: The font size of the text in the previews.
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*
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* @returns object
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* object with 'fontFaces', a list of fonts that apply to this node.
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*/
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getAllUsedFontFaces(options) {
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const windows = this.inspector.targetActor.windows;
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let fontsList = [];
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for (const win of windows) {
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// Fall back to the documentElement for XUL documents.
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const node = win.document.body
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? win.document.body
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: win.document.documentElement;
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fontsList = [...fontsList, ...this.getUsedFontFaces(node, options)];
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}
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return fontsList;
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},
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/**
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* Get the font faces used in an element.
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*
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* @param NodeActor node / actual DOM node
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* The node to get fonts from.
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* @param object options
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* `includePreviews`: Whether to also return image previews of the fonts.
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* `previewText`: The text to display in the previews.
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* `previewFontSize`: The font size of the text in the previews.
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*
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* @returns object
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* object with 'fontFaces', a list of fonts that apply to this node.
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*/
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getUsedFontFaces(node, options) {
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// node.rawNode is defined for NodeActor objects
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const actualNode = node.rawNode || node;
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const contentDocument = actualNode.ownerDocument;
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// We don't get fonts for a node, but for a range
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const rng = contentDocument.createRange();
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const isPseudoElement = Boolean(
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CssLogic.getBindingElementAndPseudo(actualNode).pseudo
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);
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if (isPseudoElement) {
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rng.selectNodeContents(actualNode);
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} else {
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rng.selectNode(actualNode);
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}
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const fonts = InspectorUtils.getUsedFontFaces(rng);
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const fontsArray = [];
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for (let i = 0; i < fonts.length; i++) {
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const font = fonts[i];
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const fontFace = {
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name: font.name,
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CSSFamilyName: font.CSSFamilyName,
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CSSGeneric: font.CSSGeneric || null,
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srcIndex: font.srcIndex,
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URI: font.URI,
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format: font.format,
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localName: font.localName,
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metadata: font.metadata,
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};
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// If this font comes from a @font-face rule
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if (font.rule) {
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const styleActor = StyleRuleActor(this, font.rule);
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this.manage(styleActor);
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fontFace.rule = styleActor;
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fontFace.ruleText = font.rule.cssText;
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}
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// Get the weight and style of this font for the preview and sort order
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let weight = NORMAL_FONT_WEIGHT,
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style = "";
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if (font.rule) {
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weight =
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font.rule.style.getPropertyValue("font-weight") || NORMAL_FONT_WEIGHT;
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if (weight == "bold") {
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weight = BOLD_FONT_WEIGHT;
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} else if (weight == "normal") {
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weight = NORMAL_FONT_WEIGHT;
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}
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style = font.rule.style.getPropertyValue("font-style") || "";
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}
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fontFace.weight = weight;
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fontFace.style = style;
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if (options.includePreviews) {
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const opts = {
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previewText: options.previewText,
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previewFontSize: options.previewFontSize,
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fontStyle: weight + " " + style,
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fillStyle: options.previewFillStyle,
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};
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const { dataURL, size } = getFontPreviewData(
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font.CSSFamilyName,
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contentDocument,
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opts
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);
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fontFace.preview = {
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data: LongStringActor(this.conn, dataURL),
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size,
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};
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}
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if (options.includeVariations && FONT_VARIATIONS_ENABLED) {
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fontFace.variationAxes = font.getVariationAxes();
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fontFace.variationInstances = font.getVariationInstances();
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}
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fontsArray.push(fontFace);
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}
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// @font-face fonts at the top, then alphabetically, then by weight
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fontsArray.sort(function(a, b) {
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return a.weight > b.weight ? 1 : -1;
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});
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fontsArray.sort(function(a, b) {
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if (a.CSSFamilyName == b.CSSFamilyName) {
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return 0;
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}
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return a.CSSFamilyName > b.CSSFamilyName ? 1 : -1;
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});
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fontsArray.sort(function(a, b) {
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if ((a.rule && b.rule) || (!a.rule && !b.rule)) {
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return 0;
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}
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return !a.rule && b.rule ? 1 : -1;
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});
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return fontsArray;
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},
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/**
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* Get a list of selectors that match a given property for a node.
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*
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* @param NodeActor node
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* @param string property
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* @param object options
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* `filter`: A string filter that affects the "matched" handling.
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* 'user': Include properties from user style sheets.
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* 'ua': Include properties from user and user-agent sheets.
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* Default value is 'ua'
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*
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* @returns a JSON object with the following form:
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* {
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* // An ordered list of rules that apply
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* matched: [{
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* rule: <rule actorid>,
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* sourceText: <string>, // The source of the selector, relative
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* // to the node in question.
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* selector: <string>, // the selector ID that matched
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* value: <string>, // the value of the property
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* status: <int>,
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* // The status of the match - high numbers are better placed
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* // to provide styling information:
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* // 3: Best match, was used.
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* // 2: Matched, but was overridden.
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* // 1: Rule from a parent matched.
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* // 0: Unmatched (never returned in this API)
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* }, ...],
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*
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* // The full form of any domrule referenced.
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* rules: [ <domrule>, ... ], // The full form of any domrule referenced
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*
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* // The full form of any sheets referenced.
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* sheets: [ <domsheet>, ... ]
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* }
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*/
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getMatchedSelectors(node, property, options) {
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this.cssLogic.sourceFilter = options.filter || SharedCssLogic.FILTER.UA;
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this.cssLogic.highlight(node.rawNode);
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const rules = new Set();
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const sheets = new Set();
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const matched = [];
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const propInfo = this.cssLogic.getPropertyInfo(property);
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for (const selectorInfo of propInfo.matchedSelectors) {
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const cssRule = selectorInfo.selector.cssRule;
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const domRule = cssRule.sourceElement || cssRule.domRule;
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const rule = this._styleRef(domRule);
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rules.add(rule);
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matched.push({
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rule,
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sourceText: this.getSelectorSource(selectorInfo, node.rawNode),
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selector: selectorInfo.selector.text,
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name: selectorInfo.property,
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value: selectorInfo.value,
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status: selectorInfo.status,
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});
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}
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this.expandSets(rules, sheets);
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return {
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matched,
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rules: [...rules],
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sheets: [...sheets],
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};
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|
},
|
|
|
|
// Get a selector source for a CssSelectorInfo relative to a given
|
|
// node.
|
|
getSelectorSource(selectorInfo, relativeTo) {
|
|
let result = selectorInfo.selector.text;
|
|
if (selectorInfo.inlineStyle) {
|
|
const source = selectorInfo.sourceElement;
|
|
if (source === relativeTo) {
|
|
result = "this";
|
|
} else {
|
|
result = CssLogic.getShortName(source);
|
|
}
|
|
result += ".style";
|
|
}
|
|
return result;
|
|
},
|
|
|
|
/**
|
|
* Get the set of styles that apply to a given node.
|
|
* @param NodeActor node
|
|
* @param object options
|
|
* `filter`: A string filter that affects the "matched" handling.
|
|
* 'user': Include properties from user style sheets.
|
|
* 'ua': Include properties from user and user-agent sheets.
|
|
* Default value is 'ua'
|
|
* `inherited`: Include styles inherited from parent nodes.
|
|
* `matchedSelectors`: Include an array of specific selectors that
|
|
* caused this rule to match its node.
|
|
* `skipPseudo`: Exclude styles applied to pseudo elements of the provided node.
|
|
*/
|
|
async getApplied(node, options) {
|
|
// Clear any previous references to StyleRuleActor instances for CSS rules.
|
|
// Assume the consumer has switched context to a new node and no longer
|
|
// interested in state changes of previous rules.
|
|
this._observedRules = [];
|
|
this.selectedElement = node.rawNode;
|
|
|
|
if (!node) {
|
|
return { entries: [], rules: [], sheets: [] };
|
|
}
|
|
|
|
this.cssLogic.highlight(node.rawNode);
|
|
let entries = [];
|
|
entries = entries.concat(
|
|
this._getAllElementRules(node, undefined, options)
|
|
);
|
|
|
|
const result = this.getAppliedProps(node, entries, options);
|
|
for (const rule of result.rules) {
|
|
try {
|
|
// See the comment in |StyleRuleActor.form| to understand this.
|
|
// This can throw if the authored rule text is not found (so e.g., with
|
|
// CSSOM or constructable stylesheets).
|
|
await rule.getAuthoredCssText();
|
|
} catch (ex) {}
|
|
}
|
|
|
|
// Reference to instances of StyleRuleActor for CSS rules matching the node.
|
|
// Assume these are used by a consumer which wants to be notified when their
|
|
// state or declarations change either directly or indirectly.
|
|
this._observedRules = result.rules;
|
|
|
|
return result;
|
|
},
|
|
|
|
_hasInheritedProps(style) {
|
|
return Array.prototype.some.call(style, prop => {
|
|
return InspectorUtils.isInheritedProperty(prop);
|
|
});
|
|
},
|
|
|
|
async isPositionEditable(node) {
|
|
if (!node || node.rawNode.nodeType !== node.rawNode.ELEMENT_NODE) {
|
|
return false;
|
|
}
|
|
|
|
const props = getDefinedGeometryProperties(node.rawNode);
|
|
|
|
// Elements with only `width` and `height` are currently not considered
|
|
// editable.
|
|
return (
|
|
props.has("top") ||
|
|
props.has("right") ||
|
|
props.has("left") ||
|
|
props.has("bottom")
|
|
);
|
|
},
|
|
|
|
/**
|
|
* Helper function for getApplied, gets all the rules from a given
|
|
* element. See getApplied for documentation on parameters.
|
|
* @param NodeActor node
|
|
* @param bool inherited
|
|
* @param object options
|
|
|
|
* @return Array The rules for a given element. Each item in the
|
|
* array has the following signature:
|
|
* - rule RuleActor
|
|
* - isSystem Boolean
|
|
* - inherited Boolean
|
|
* - pseudoElement String
|
|
*/
|
|
_getAllElementRules(node, inherited, options) {
|
|
const { bindingElement, pseudo } = CssLogic.getBindingElementAndPseudo(
|
|
node.rawNode
|
|
);
|
|
const rules = [];
|
|
|
|
if (!bindingElement || !bindingElement.style) {
|
|
return rules;
|
|
}
|
|
|
|
const elementStyle = this._styleRef(bindingElement);
|
|
const showElementStyles = !inherited && !pseudo;
|
|
const showInheritedStyles =
|
|
inherited && this._hasInheritedProps(bindingElement.style);
|
|
|
|
const rule = {
|
|
rule: elementStyle,
|
|
pseudoElement: null,
|
|
isSystem: false,
|
|
inherited: false,
|
|
};
|
|
|
|
// First any inline styles
|
|
if (showElementStyles) {
|
|
rules.push(rule);
|
|
}
|
|
|
|
// Now any inherited styles
|
|
if (showInheritedStyles) {
|
|
rule.inherited = inherited;
|
|
rules.push(rule);
|
|
}
|
|
|
|
// Add normal rules. Typically this is passing in the node passed into the
|
|
// function, unless if that node was ::before/::after. In which case,
|
|
// it will pass in the parentNode along with "::before"/"::after".
|
|
this._getElementRules(bindingElement, pseudo, inherited, options).forEach(
|
|
oneRule => {
|
|
// The only case when there would be a pseudo here is
|
|
// ::before/::after, and in this case we want to tell the
|
|
// view that it belongs to the element (which is a
|
|
// _moz_generated_content native anonymous element).
|
|
oneRule.pseudoElement = null;
|
|
rules.push(oneRule);
|
|
}
|
|
);
|
|
|
|
// Now any pseudos.
|
|
if (showElementStyles && !options.skipPseudo) {
|
|
for (const readPseudo of PSEUDO_ELEMENTS) {
|
|
if (this._pseudoIsRelevant(bindingElement, readPseudo)) {
|
|
this._getElementRules(
|
|
bindingElement,
|
|
readPseudo,
|
|
inherited,
|
|
options
|
|
).forEach(oneRule => {
|
|
rules.push(oneRule);
|
|
});
|
|
}
|
|
}
|
|
}
|
|
|
|
return rules;
|
|
},
|
|
|
|
_nodeIsTextfieldLike(node) {
|
|
if (node.nodeName == "TEXTAREA") {
|
|
return true;
|
|
}
|
|
return (
|
|
node.mozIsTextField &&
|
|
(node.mozIsTextField(false) || node.type == "number")
|
|
);
|
|
},
|
|
|
|
_nodeIsButtonLike(node) {
|
|
if (node.nodeName == "BUTTON") {
|
|
return true;
|
|
}
|
|
return (
|
|
node.nodeName == "INPUT" &&
|
|
["submit", "color", "button"].includes(node.type)
|
|
);
|
|
},
|
|
|
|
_nodeIsListItem(node) {
|
|
const display = CssLogic.getComputedStyle(node).getPropertyValue("display");
|
|
// This is written this way to handle `inline list-item` and such.
|
|
return display.split(" ").includes("list-item");
|
|
},
|
|
|
|
// eslint-disable-next-line complexity
|
|
_pseudoIsRelevant(node, pseudo) {
|
|
switch (pseudo) {
|
|
case "::after":
|
|
case "::before":
|
|
case "::first-letter":
|
|
case "::first-line":
|
|
case "::selection":
|
|
return true;
|
|
case "::marker":
|
|
return this._nodeIsListItem(node);
|
|
case "::backdrop":
|
|
return node.matches(":fullscreen");
|
|
case "::cue":
|
|
return node.nodeName == "VIDEO";
|
|
case "::file-selector-button":
|
|
return node.nodeName == "INPUT" && node.type == "file";
|
|
case "::placeholder":
|
|
case "::-moz-placeholder":
|
|
return this._nodeIsTextfieldLike(node);
|
|
case "::-moz-focus-inner":
|
|
return this._nodeIsButtonLike(node);
|
|
case "::-moz-meter-bar":
|
|
return node.nodeName == "METER";
|
|
case "::-moz-progress-bar":
|
|
return node.nodeName == "PROGRESS";
|
|
case "::-moz-color-swatch":
|
|
return node.nodeName == "INPUT" && node.type == "color";
|
|
case "::-moz-range-progress":
|
|
case "::-moz-range-thumb":
|
|
case "::-moz-range-track":
|
|
return node.nodeName == "INPUT" && node.type == "range";
|
|
default:
|
|
throw Error("Unhandled pseudo-element " + pseudo);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Helper function for _getAllElementRules, returns the rules from a given
|
|
* element. See getApplied for documentation on parameters.
|
|
* @param DOMNode node
|
|
* @param string pseudo
|
|
* @param DOMNode inherited
|
|
* @param object options
|
|
*
|
|
* @returns Array
|
|
*/
|
|
_getElementRules(node, pseudo, inherited, options) {
|
|
const domRules = InspectorUtils.getCSSStyleRules(
|
|
node,
|
|
pseudo,
|
|
CssLogic.hasVisitedState(node)
|
|
);
|
|
|
|
if (!domRules) {
|
|
return [];
|
|
}
|
|
|
|
const rules = [];
|
|
|
|
// getCSSStyleRules returns ordered from least-specific to
|
|
// most-specific.
|
|
for (let i = domRules.length - 1; i >= 0; i--) {
|
|
const domRule = domRules[i];
|
|
|
|
const isSystem = SharedCssLogic.isAgentStylesheet(
|
|
domRule.parentStyleSheet
|
|
);
|
|
|
|
if (isSystem && options.filter != SharedCssLogic.FILTER.UA) {
|
|
continue;
|
|
}
|
|
|
|
if (inherited) {
|
|
// Don't include inherited rules if none of its properties
|
|
// are inheritable.
|
|
const hasInherited = [...domRule.style].some(prop =>
|
|
InspectorUtils.isInheritedProperty(prop)
|
|
);
|
|
if (!hasInherited) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
const ruleActor = this._styleRef(domRule);
|
|
|
|
rules.push({
|
|
rule: ruleActor,
|
|
inherited,
|
|
isSystem,
|
|
pseudoElement: pseudo,
|
|
});
|
|
}
|
|
return rules;
|
|
},
|
|
|
|
/**
|
|
* Given a node and a CSS rule, walk up the DOM looking for a
|
|
* matching element rule. Return an array of all found entries, in
|
|
* the form generated by _getAllElementRules. Note that this will
|
|
* always return an array of either zero or one element.
|
|
*
|
|
* @param {NodeActor} node the node
|
|
* @param {CSSStyleRule} filterRule the rule to filter for
|
|
* @return {Array} array of zero or one elements; if one, the element
|
|
* is the entry as returned by _getAllElementRules.
|
|
*/
|
|
findEntryMatchingRule(node, filterRule) {
|
|
const options = { matchedSelectors: true, inherited: true };
|
|
let entries = [];
|
|
let parent = this.walker.parentNode(node);
|
|
while (parent && parent.rawNode.nodeType != Node.DOCUMENT_NODE) {
|
|
entries = entries.concat(
|
|
this._getAllElementRules(parent, parent, options)
|
|
);
|
|
parent = this.walker.parentNode(parent);
|
|
}
|
|
|
|
return entries.filter(entry => entry.rule.rawRule === filterRule);
|
|
},
|
|
|
|
/**
|
|
* Helper function for getApplied that fetches a set of style properties that
|
|
* apply to the given node and associated rules
|
|
* @param NodeActor node
|
|
* @param object options
|
|
* `filter`: A string filter that affects the "matched" handling.
|
|
* 'user': Include properties from user style sheets.
|
|
* 'ua': Include properties from user and user-agent sheets.
|
|
* Default value is 'ua'
|
|
* `inherited`: Include styles inherited from parent nodes.
|
|
* `matchedSelectors`: Include an array of specific selectors that
|
|
* caused this rule to match its node.
|
|
* `skipPseudo`: Exclude styles applied to pseudo elements of the provided node.
|
|
* @param array entries
|
|
* List of appliedstyle objects that lists the rules that apply to the
|
|
* node. If adding a new rule to the stylesheet, only the new rule entry
|
|
* is provided and only the style properties that apply to the new
|
|
* rule is fetched.
|
|
* @returns Object containing the list of rule entries, rule actors and
|
|
* stylesheet actors that applies to the given node and its associated
|
|
* rules.
|
|
*/
|
|
getAppliedProps(node, entries, options) {
|
|
if (options.inherited) {
|
|
let parent = this.walker.parentNode(node);
|
|
while (parent && parent.rawNode.nodeType != Node.DOCUMENT_NODE) {
|
|
entries = entries.concat(
|
|
this._getAllElementRules(parent, parent, options)
|
|
);
|
|
parent = this.walker.parentNode(parent);
|
|
}
|
|
}
|
|
|
|
if (options.matchedSelectors) {
|
|
for (const entry of entries) {
|
|
if (entry.rule.type === ELEMENT_STYLE) {
|
|
continue;
|
|
}
|
|
|
|
const domRule = entry.rule.rawRule;
|
|
const selectors = CssLogic.getSelectors(domRule);
|
|
const element = entry.inherited
|
|
? entry.inherited.rawNode
|
|
: node.rawNode;
|
|
|
|
const { bindingElement, pseudo } = CssLogic.getBindingElementAndPseudo(
|
|
element
|
|
);
|
|
const relevantLinkVisited = CssLogic.hasVisitedState(bindingElement);
|
|
entry.matchedSelectors = [];
|
|
|
|
for (let i = 0; i < selectors.length; i++) {
|
|
if (
|
|
InspectorUtils.selectorMatchesElement(
|
|
bindingElement,
|
|
domRule,
|
|
i,
|
|
pseudo,
|
|
relevantLinkVisited
|
|
)
|
|
) {
|
|
entry.matchedSelectors.push(selectors[i]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// Add all the keyframes rule associated with the element
|
|
const computedStyle = this.cssLogic.computedStyle;
|
|
if (computedStyle) {
|
|
let animationNames = computedStyle.animationName.split(",");
|
|
animationNames = animationNames.map(name => name.trim());
|
|
|
|
if (animationNames) {
|
|
// Traverse through all the available keyframes rule and add
|
|
// the keyframes rule that matches the computed animation name
|
|
for (const keyframesRule of this.cssLogic.keyframesRules) {
|
|
if (animationNames.indexOf(keyframesRule.name) > -1) {
|
|
for (const rule of keyframesRule.cssRules) {
|
|
entries.push({
|
|
rule: this._styleRef(rule),
|
|
keyframes: this._styleRef(keyframesRule),
|
|
});
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
const rules = new Set();
|
|
const sheets = new Set();
|
|
entries.forEach(entry => rules.add(entry.rule));
|
|
this.expandSets(rules, sheets);
|
|
|
|
return {
|
|
entries,
|
|
rules: [...rules],
|
|
sheets: [...sheets],
|
|
};
|
|
},
|
|
|
|
/**
|
|
* Expand Sets of rules and sheets to include all parent rules and sheets.
|
|
*/
|
|
expandSets(ruleSet, sheetSet) {
|
|
// Sets include new items in their iteration
|
|
for (const rule of ruleSet) {
|
|
if (rule.rawRule.parentRule) {
|
|
const parent = this._styleRef(rule.rawRule.parentRule);
|
|
if (!ruleSet.has(parent)) {
|
|
ruleSet.add(parent);
|
|
}
|
|
}
|
|
}
|
|
|
|
// We need to clean up the following codes when server-side stylesheet
|
|
// watcher is enabled in bug 1672090.
|
|
if (this.hasStyleSheetWatcherSupport) {
|
|
return;
|
|
}
|
|
|
|
for (const rule of ruleSet) {
|
|
if (rule.rawRule.parentStyleSheet) {
|
|
const parent = this._sheetRef(rule.rawRule.parentStyleSheet);
|
|
if (!sheetSet.has(parent)) {
|
|
sheetSet.add(parent);
|
|
}
|
|
}
|
|
}
|
|
|
|
for (const sheet of sheetSet) {
|
|
if (sheet.rawSheet.parentStyleSheet) {
|
|
const parent = this._sheetRef(sheet.rawSheet.parentStyleSheet);
|
|
if (!sheetSet.has(parent)) {
|
|
sheetSet.add(parent);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Get layout-related information about a node.
|
|
* This method returns an object with properties giving information about
|
|
* the node's margin, border, padding and content region sizes, as well
|
|
* as information about the type of box, its position, z-index, etc...
|
|
* @param {NodeActor} node
|
|
* @param {Object} options The only available option is autoMargins.
|
|
* If set to true, the element's margins will receive an extra check to see
|
|
* whether they are set to "auto" (knowing that the computed-style in this
|
|
* case would return "0px").
|
|
* The returned object will contain an extra property (autoMargins) listing
|
|
* all margins that are set to auto, e.g. {top: "auto", left: "auto"}.
|
|
* @return {Object}
|
|
*/
|
|
getLayout(node, options) {
|
|
this.cssLogic.highlight(node.rawNode);
|
|
|
|
const layout = {};
|
|
|
|
// First, we update the first part of the box model view, with
|
|
// the size of the element.
|
|
|
|
const clientRect = node.rawNode.getBoundingClientRect();
|
|
layout.width = parseFloat(clientRect.width.toPrecision(6));
|
|
layout.height = parseFloat(clientRect.height.toPrecision(6));
|
|
|
|
// We compute and update the values of margins & co.
|
|
const style = CssLogic.getComputedStyle(node.rawNode);
|
|
for (const prop of [
|
|
"position",
|
|
"top",
|
|
"right",
|
|
"bottom",
|
|
"left",
|
|
"margin-top",
|
|
"margin-right",
|
|
"margin-bottom",
|
|
"margin-left",
|
|
"padding-top",
|
|
"padding-right",
|
|
"padding-bottom",
|
|
"padding-left",
|
|
"border-top-width",
|
|
"border-right-width",
|
|
"border-bottom-width",
|
|
"border-left-width",
|
|
"z-index",
|
|
"box-sizing",
|
|
"display",
|
|
"float",
|
|
"line-height",
|
|
]) {
|
|
layout[prop] = style.getPropertyValue(prop);
|
|
}
|
|
|
|
if (options.autoMargins) {
|
|
layout.autoMargins = this.processMargins(this.cssLogic);
|
|
}
|
|
|
|
for (const i in this.map) {
|
|
const property = this.map[i].property;
|
|
this.map[i].value = parseFloat(style.getPropertyValue(property));
|
|
}
|
|
|
|
return layout;
|
|
},
|
|
|
|
/**
|
|
* Find 'auto' margin properties.
|
|
*/
|
|
processMargins(cssLogic) {
|
|
const margins = {};
|
|
|
|
for (const prop of ["top", "bottom", "left", "right"]) {
|
|
const info = cssLogic.getPropertyInfo("margin-" + prop);
|
|
const selectors = info.matchedSelectors;
|
|
if (selectors && !!selectors.length && selectors[0].value == "auto") {
|
|
margins[prop] = "auto";
|
|
}
|
|
}
|
|
|
|
return margins;
|
|
},
|
|
|
|
/**
|
|
* On page navigation, tidy up remaining objects.
|
|
*/
|
|
onFrameUnload() {
|
|
this.styleElements = new WeakMap();
|
|
},
|
|
|
|
/**
|
|
* When a stylesheet is added, handle the related StyleSheetActor to listen for changes.
|
|
* @param {StyleSheetActor} actor
|
|
* The actor for the added stylesheet.
|
|
*/
|
|
onStyleSheetAdded(actor) {
|
|
if (!this._watchedSheets.has(actor)) {
|
|
this._watchedSheets.add(actor);
|
|
actor.on("style-applied", this._styleApplied);
|
|
}
|
|
},
|
|
|
|
_onStylesheetUpdated({ resourceId, updateKind, updates = {} }) {
|
|
if (updateKind != "style-applied") {
|
|
return;
|
|
}
|
|
const kind = updates.event.kind;
|
|
// Duplicate refMap content before looping as onStyleApplied may mutate it
|
|
for (const styleActor of [...this.refMap.values()]) {
|
|
// Ignore StyleRuleActor that don't have a parent stylesheet.
|
|
// i.e. actor whose type is ELEMENT_STYLE.
|
|
if (!styleActor._parentSheet) {
|
|
continue;
|
|
}
|
|
const resId = this.styleSheetsManager.getStyleSheetResourceId(
|
|
styleActor._parentSheet
|
|
);
|
|
if (resId === resourceId) {
|
|
styleActor._onStyleApplied(kind);
|
|
}
|
|
}
|
|
this._styleApplied(kind);
|
|
},
|
|
|
|
/**
|
|
* Helper function to addNewRule to get or create a style tag in the provided
|
|
* document.
|
|
*
|
|
* @param {Document} document
|
|
* The document in which the style element should be appended.
|
|
* @returns DOMElement of the style tag
|
|
*/
|
|
getStyleElement(document) {
|
|
if (
|
|
!this.styleElements.has(document) ||
|
|
!this.styleElements.get(document).isConnected
|
|
) {
|
|
const style = document.createElementNS(XHTML_NS, "style");
|
|
style.setAttribute("type", "text/css");
|
|
style.setDevtoolsAsTriggeringPrincipal();
|
|
document.documentElement.appendChild(style);
|
|
this.styleElements.set(document, style);
|
|
}
|
|
|
|
return this.styleElements.get(document);
|
|
},
|
|
|
|
/**
|
|
* Helper function for adding a new rule and getting its applied style
|
|
* properties
|
|
* @param NodeActor node
|
|
* @param CSSStyleRule rule
|
|
* @returns Object containing its applied style properties
|
|
*/
|
|
getNewAppliedProps(node, rule) {
|
|
const ruleActor = this._styleRef(rule);
|
|
return this.getAppliedProps(node, [{ rule: ruleActor }], {
|
|
matchedSelectors: true,
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Adds a new rule, and returns the new StyleRuleActor.
|
|
* @param {NodeActor} node
|
|
* @param {String} pseudoClasses The list of pseudo classes to append to the
|
|
* new selector.
|
|
* @returns {StyleRuleActor} the new rule
|
|
*/
|
|
async addNewRule(node, pseudoClasses) {
|
|
let sheet = null;
|
|
if (this.hasStyleSheetWatcherSupport) {
|
|
const doc = node.rawNode.ownerDocument;
|
|
if (
|
|
this.styleElements.has(doc) &&
|
|
this.styleElements.get(doc).ownerNode?.isConnected
|
|
) {
|
|
sheet = this.styleElements.get(doc);
|
|
} else {
|
|
sheet = await this.styleSheetsManager.addStyleSheet(doc);
|
|
this.styleElements.set(doc, sheet);
|
|
}
|
|
} else {
|
|
const style = this.getStyleElement(node.rawNode.ownerDocument);
|
|
sheet = style.sheet;
|
|
}
|
|
|
|
const cssRules = sheet.cssRules;
|
|
const rawNode = node.rawNode;
|
|
const classes = [...rawNode.classList];
|
|
|
|
let selector;
|
|
if (rawNode.id) {
|
|
selector = "#" + CSS.escape(rawNode.id);
|
|
} else if (classes.length) {
|
|
selector = "." + classes.map(c => CSS.escape(c)).join(".");
|
|
} else {
|
|
selector = rawNode.localName;
|
|
}
|
|
|
|
if (pseudoClasses && pseudoClasses.length) {
|
|
selector += pseudoClasses.join("");
|
|
}
|
|
|
|
const index = sheet.insertRule(selector + " {}", cssRules.length);
|
|
|
|
if (this.hasStyleSheetWatcherSupport) {
|
|
const resourceId = this.styleSheetsManager.getStyleSheetResourceId(sheet);
|
|
let authoredText = await this.styleSheetsManager.getText(resourceId);
|
|
authoredText += "\n" + selector + " {\n" + "}";
|
|
await this.styleSheetsManager.setStyleSheetText(resourceId, authoredText);
|
|
} else {
|
|
// If inserting the rule succeeded, go ahead and edit the source
|
|
// text if requested.
|
|
const sheetActor = this._sheetRef(sheet);
|
|
let { str: authoredText } = await sheetActor.getText();
|
|
authoredText += "\n" + selector + " {\n" + "}";
|
|
await sheetActor.update(authoredText, false);
|
|
}
|
|
|
|
const cssRule = sheet.cssRules.item(index);
|
|
const ruleActor = this._styleRef(cssRule);
|
|
|
|
TrackChangeEmitter.trackChange({
|
|
...ruleActor.metadata,
|
|
type: "rule-add",
|
|
add: null,
|
|
remove: null,
|
|
selector,
|
|
});
|
|
|
|
return this.getNewAppliedProps(node, cssRule);
|
|
},
|
|
|
|
/**
|
|
* Cause all StyleRuleActor instances of observed CSS rules to check whether the
|
|
* states of their declarations have changed.
|
|
*
|
|
* Observed rules are the latest rules returned by a call to PageStyleActor.getApplied()
|
|
*
|
|
* This is necessary because changes in one rule can cause the declarations in another
|
|
* to not be applicable (inactive CSS). The observers of those rules should be notified.
|
|
* Rules will fire a "rule-updated" event if any of their declarations changed state.
|
|
*
|
|
* Call this method whenever a CSS rule is mutated:
|
|
* - a CSS declaration is added/changed/disabled/removed
|
|
* - a selector is added/changed/removed
|
|
*/
|
|
refreshObservedRules() {
|
|
for (const rule of this._observedRules) {
|
|
rule.refresh();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Get an array of existing attribute values in a node document.
|
|
*
|
|
* @param {String} search: A string to filter attribute value on.
|
|
* @param {String} attributeType: The type of attribute we want to retrieve the values.
|
|
* @param {Element} node: The element we want to get possible attributes for. This will
|
|
* be used to get the document where the search is happening.
|
|
* @returns {Array<String>} An array of strings
|
|
*/
|
|
getAttributesInOwnerDocument(search, attributeType, node) {
|
|
if (!search) {
|
|
throw new Error("search is mandatory");
|
|
}
|
|
|
|
// In a non-fission world, a node from an iframe shares the same `rootNode` as a node
|
|
// in the top-level document. So here we need to retrieve the document from the node
|
|
// in parameter in order to retrieve the right document.
|
|
// This may change once we have a dedicated walker for every target in a tab, as we'll
|
|
// be able to directly talk to the "right" walker actor.
|
|
const targetDocument = node.rawNode.ownerDocument;
|
|
|
|
// We store the result in a Set which will contain the attribute value
|
|
const result = new Set();
|
|
const lcSearch = search.toLowerCase();
|
|
this._collectAttributesFromDocumentDOM(
|
|
result,
|
|
lcSearch,
|
|
attributeType,
|
|
targetDocument,
|
|
node.rawNode
|
|
);
|
|
this._collectAttributesFromDocumentStyleSheets(
|
|
result,
|
|
lcSearch,
|
|
attributeType,
|
|
targetDocument
|
|
);
|
|
|
|
return Array.from(result).sort();
|
|
},
|
|
|
|
/**
|
|
* Collect attribute values from the document DOM tree, matching the passed filter and
|
|
* type, to the result Set.
|
|
*
|
|
* @param {Set<String>} result: A Set to which the results will be added.
|
|
* @param {String} search: A string to filter attribute value on.
|
|
* @param {String} attributeType: The type of attribute we want to retrieve the values.
|
|
* @param {Document} targetDocument: The document the search occurs in.
|
|
* @param {Node} currentNode: The current element rawNode
|
|
*/
|
|
_collectAttributesFromDocumentDOM(
|
|
result,
|
|
search,
|
|
attributeType,
|
|
targetDocument,
|
|
nodeRawNode
|
|
) {
|
|
// In order to retrieve attributes from DOM elements in the document, we're going to
|
|
// do a query on the root node using attributes selector, to directly get the elements
|
|
// matching the attributes we're looking for.
|
|
|
|
// For classes, we need something a bit different as the className we're looking
|
|
// for might not be the first in the attribute value, meaning we can't use the
|
|
// "attribute starts with X" selector.
|
|
const attributeSelectorPositionChar = attributeType === "class" ? "*" : "^";
|
|
const selector = `[${attributeType}${attributeSelectorPositionChar}=${search} i]`;
|
|
|
|
const matchingElements = targetDocument.querySelectorAll(selector);
|
|
|
|
for (const element of matchingElements) {
|
|
if (element === nodeRawNode) {
|
|
return;
|
|
}
|
|
// For class attribute, we need to add the elements of the classList that match
|
|
// the filter string.
|
|
if (attributeType === "class") {
|
|
for (const cls of element.classList) {
|
|
if (!result.has(cls) && cls.toLowerCase().startsWith(search)) {
|
|
result.add(cls);
|
|
}
|
|
}
|
|
} else {
|
|
const { value } = element.attributes[attributeType];
|
|
// For other attributes, we can directly use the attribute value.
|
|
result.add(value);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Collect attribute values from the document stylesheets, matching the passed filter
|
|
* and type, to the result Set.
|
|
*
|
|
* @param {Set<String>} result: A Set to which the results will be added.
|
|
* @param {String} search: A string to filter attribute value on.
|
|
* @param {String} attributeType: The type of attribute we want to retrieve the values.
|
|
* It only supports "class" and "id" at the moment.
|
|
* @param {Document} targetDocument: The document the search occurs in.
|
|
*/
|
|
_collectAttributesFromDocumentStyleSheets(
|
|
result,
|
|
search,
|
|
attributeType,
|
|
targetDocument
|
|
) {
|
|
if (attributeType !== "class" && attributeType !== "id") {
|
|
return;
|
|
}
|
|
|
|
// We loop through all the stylesheets and their rules, and then use the lexer to only
|
|
// get the attributes we're looking for.
|
|
for (const styleSheet of targetDocument.styleSheets) {
|
|
for (const rule of styleSheet.rules) {
|
|
this._collectAttributesFromRule(result, rule, search, attributeType);
|
|
}
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Collect attribute values from the rule, matching the passed filter and type, to the
|
|
* result Set.
|
|
*
|
|
* @param {Set<String>} result: A Set to which the results will be added.
|
|
* @param {Rule} rule: The rule the search occurs in.
|
|
* @param {String} search: A string to filter attribute value on.
|
|
* @param {String} attributeType: The type of attribute we want to retrieve the values.
|
|
* It only supports "class" and "id" at the moment.
|
|
*/
|
|
_collectAttributesFromRule(result, rule, search, attributeType) {
|
|
const shouldRetrieveClasses = attributeType === "class";
|
|
const shouldRetrieveIds = attributeType === "id";
|
|
|
|
const { selectorText } = rule;
|
|
// If there's no selectorText, or if the selectorText does not include the
|
|
// filter, we can bail out.
|
|
if (!selectorText || !selectorText.toLowerCase().includes(search)) {
|
|
return;
|
|
}
|
|
|
|
// Check if we should parse the selectorText (do we need to check for class/id and
|
|
// if so, does the selector contains class/id related chars).
|
|
const parseForClasses =
|
|
shouldRetrieveClasses &&
|
|
selectorText.toLowerCase().includes(`.${search}`);
|
|
const parseForIds =
|
|
shouldRetrieveIds && selectorText.toLowerCase().includes(`#${search}`);
|
|
|
|
if (!parseForClasses && !parseForIds) {
|
|
return;
|
|
}
|
|
|
|
const lexer = getCSSLexer(selectorText);
|
|
let token;
|
|
while ((token = lexer.nextToken())) {
|
|
if (
|
|
token.tokenType === "symbol" &&
|
|
((shouldRetrieveClasses && token.text === ".") ||
|
|
(shouldRetrieveIds && token.text === "#"))
|
|
) {
|
|
token = lexer.nextToken();
|
|
if (
|
|
token.tokenType === "ident" &&
|
|
token.text.toLowerCase().startsWith(search)
|
|
) {
|
|
result.add(token.text);
|
|
}
|
|
}
|
|
}
|
|
},
|
|
});
|
|
exports.PageStyleActor = PageStyleActor;
|