mirror of
https://github.com/ManchildProductions/UXP-Fixed.git
synced 2026-06-12 10:39:18 +00:00
janekptacijarabaci
720 lines
21 KiB
JavaScript
720 lines
21 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 { extend } = require("sdk/core/heritage");
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const { AutoRefreshHighlighter } = require("./auto-refresh");
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const {
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CanvasFrameAnonymousContentHelper,
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createNode,
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createSVGNode,
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getBindingElementAndPseudo,
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hasPseudoClassLock,
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isNodeValid,
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moveInfobar,
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} = require("./utils/markup");
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const {
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setIgnoreLayoutChanges,
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getCurrentZoom,
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} = require("devtools/shared/layout/utils");
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const inspector = require("devtools/server/actors/inspector");
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const nodeConstants = require("devtools/shared/dom-node-constants");
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// Note that the order of items in this array is important because it is used
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// for drawing the BoxModelHighlighter's path elements correctly.
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const BOX_MODEL_REGIONS = ["margin", "border", "padding", "content"];
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const BOX_MODEL_SIDES = ["top", "right", "bottom", "left"];
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// Width of boxmodelhighlighter guides
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const GUIDE_STROKE_WIDTH = 1;
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// FIXME: add ":visited" and ":link" after bug 713106 is fixed
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const PSEUDO_CLASSES = [":hover", ":active", ":focus"];
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/**
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* The BoxModelHighlighter draws the box model regions on top of a node.
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* If the node is a block box, then each region will be displayed as 1 polygon.
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* If the node is an inline box though, each region may be represented by 1 or
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* more polygons, depending on how many line boxes the inline element has.
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*
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* Usage example:
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*
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* let h = new BoxModelHighlighter(env);
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* h.show(node, options);
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* h.hide();
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* h.destroy();
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*
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* Available options:
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* - region {String}
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* "content", "padding", "border" or "margin"
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* This specifies the region that the guides should outline.
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* Defaults to "content"
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* - hideGuides {Boolean}
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* Defaults to false
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* - hideInfoBar {Boolean}
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* Defaults to false
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* - showOnly {String}
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* "content", "padding", "border" or "margin"
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* If set, only this region will be highlighted. Use with onlyRegionArea to
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* only highlight the area of the region.
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* - onlyRegionArea {Boolean}
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* This can be set to true to make each region's box only highlight the area
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* of the corresponding region rather than the area of nested regions too.
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* This is useful when used with showOnly.
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*
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* Structure:
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* <div class="highlighter-container">
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* <div class="box-model-root">
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* <svg class="box-model-elements" hidden="true">
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* <g class="box-model-regions">
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* <path class="box-model-margin" points="..." />
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* <path class="box-model-border" points="..." />
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* <path class="box-model-padding" points="..." />
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* <path class="box-model-content" points="..." />
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* </g>
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* <line class="box-model-guide-top" x1="..." y1="..." x2="..." y2="..." />
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* <line class="box-model-guide-right" x1="..." y1="..." x2="..." y2="..." />
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* <line class="box-model-guide-bottom" x1="..." y1="..." x2="..." y2="..." />
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* <line class="box-model-guide-left" x1="..." y1="..." x2="..." y2="..." />
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* </svg>
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* <div class="box-model-infobar-container">
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* <div class="box-model-infobar-arrow highlighter-infobar-arrow-top" />
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* <div class="box-model-infobar">
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* <div class="box-model-infobar-text" align="center">
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* <span class="box-model-infobar-tagname">Node name</span>
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* <span class="box-model-infobar-id">Node id</span>
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* <span class="box-model-infobar-classes">.someClass</span>
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* <span class="box-model-infobar-pseudo-classes">:hover</span>
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* </div>
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* </div>
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* <div class="box-model-infobar-arrow box-model-infobar-arrow-bottom"/>
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* </div>
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* </div>
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* </div>
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*/
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function BoxModelHighlighter(highlighterEnv) {
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AutoRefreshHighlighter.call(this, highlighterEnv);
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this.markup = new CanvasFrameAnonymousContentHelper(this.highlighterEnv,
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this._buildMarkup.bind(this));
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/**
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* Optionally customize each region's fill color by adding an entry to the
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* regionFill property: `highlighter.regionFill.margin = "red";
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*/
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this.regionFill = {};
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this.onWillNavigate = this.onWillNavigate.bind(this);
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this.highlighterEnv.on("will-navigate", this.onWillNavigate);
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}
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BoxModelHighlighter.prototype = extend(AutoRefreshHighlighter.prototype, {
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typeName: "BoxModelHighlighter",
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ID_CLASS_PREFIX: "box-model-",
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_buildMarkup: function () {
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let doc = this.win.document;
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let highlighterContainer = doc.createElement("div");
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highlighterContainer.className = "highlighter-container box-model";
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// Build the root wrapper, used to adapt to the page zoom.
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let rootWrapper = createNode(this.win, {
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parent: highlighterContainer,
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attributes: {
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"id": "root",
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"class": "root"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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// Building the SVG element with its polygons and lines
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let svg = createSVGNode(this.win, {
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nodeType: "svg",
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parent: rootWrapper,
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attributes: {
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"id": "elements",
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"width": "100%",
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"height": "100%",
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"hidden": "true"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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let regions = createSVGNode(this.win, {
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nodeType: "g",
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parent: svg,
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attributes: {
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"class": "regions"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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for (let region of BOX_MODEL_REGIONS) {
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createSVGNode(this.win, {
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nodeType: "path",
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parent: regions,
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attributes: {
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"class": region,
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"id": region
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},
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prefix: this.ID_CLASS_PREFIX
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});
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}
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for (let side of BOX_MODEL_SIDES) {
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createSVGNode(this.win, {
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nodeType: "line",
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parent: svg,
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attributes: {
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"class": "guide-" + side,
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"id": "guide-" + side,
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"stroke-width": GUIDE_STROKE_WIDTH
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},
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prefix: this.ID_CLASS_PREFIX
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});
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}
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// Building the nodeinfo bar markup
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let infobarContainer = createNode(this.win, {
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parent: rootWrapper,
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attributes: {
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"class": "infobar-container",
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"id": "infobar-container",
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"position": "top",
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"hidden": "true"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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let infobar = createNode(this.win, {
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parent: infobarContainer,
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attributes: {
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"class": "infobar"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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let texthbox = createNode(this.win, {
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parent: infobar,
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attributes: {
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"class": "infobar-text"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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createNode(this.win, {
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nodeType: "span",
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parent: texthbox,
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attributes: {
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"class": "infobar-tagname",
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"id": "infobar-tagname"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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createNode(this.win, {
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nodeType: "span",
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parent: texthbox,
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attributes: {
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"class": "infobar-id",
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"id": "infobar-id"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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createNode(this.win, {
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nodeType: "span",
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parent: texthbox,
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attributes: {
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"class": "infobar-classes",
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"id": "infobar-classes"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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createNode(this.win, {
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nodeType: "span",
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parent: texthbox,
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attributes: {
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"class": "infobar-pseudo-classes",
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"id": "infobar-pseudo-classes"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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createNode(this.win, {
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nodeType: "span",
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parent: texthbox,
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attributes: {
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"class": "infobar-dimensions",
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"id": "infobar-dimensions"
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},
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prefix: this.ID_CLASS_PREFIX
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});
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return highlighterContainer;
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},
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/**
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* Destroy the nodes. Remove listeners.
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*/
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destroy: function () {
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this.highlighterEnv.off("will-navigate", this.onWillNavigate);
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this.markup.destroy();
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AutoRefreshHighlighter.prototype.destroy.call(this);
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},
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getElement: function (id) {
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return this.markup.getElement(this.ID_CLASS_PREFIX + id);
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},
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/**
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* Override the AutoRefreshHighlighter's _isNodeValid method to also return true for
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* text nodes since these can also be highlighted.
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* @param {DOMNode} node
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* @return {Boolean}
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*/
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_isNodeValid: function (node) {
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return node && (isNodeValid(node) || isNodeValid(node, nodeConstants.TEXT_NODE));
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},
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/**
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* Show the highlighter on a given node
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*/
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_show: function () {
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if (BOX_MODEL_REGIONS.indexOf(this.options.region) == -1) {
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this.options.region = "content";
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}
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let shown = this._update();
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this._trackMutations();
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this.emit("ready");
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return shown;
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},
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/**
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* Track the current node markup mutations so that the node info bar can be
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* updated to reflects the node's attributes
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*/
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_trackMutations: function () {
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if (isNodeValid(this.currentNode)) {
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let win = this.currentNode.ownerDocument.defaultView;
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this.currentNodeObserver = new win.MutationObserver(this.update);
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this.currentNodeObserver.observe(this.currentNode, {attributes: true});
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}
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},
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_untrackMutations: function () {
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if (isNodeValid(this.currentNode) && this.currentNodeObserver) {
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this.currentNodeObserver.disconnect();
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this.currentNodeObserver = null;
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}
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},
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/**
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* Update the highlighter on the current highlighted node (the one that was
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* passed as an argument to show(node)).
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* Should be called whenever node size or attributes change
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*/
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_update: function () {
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let shown = false;
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setIgnoreLayoutChanges(true);
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if (this._updateBoxModel()) {
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// Show the infobar only if configured to do so and the node is an element or a text
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// node.
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if (!this.options.hideInfoBar && (
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this.currentNode.nodeType === this.currentNode.ELEMENT_NODE ||
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this.currentNode.nodeType === this.currentNode.TEXT_NODE)) {
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this._showInfobar();
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} else {
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this._hideInfobar();
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}
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this._showBoxModel();
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shown = true;
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} else {
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// Nothing to highlight (0px rectangle like a <script> tag for instance)
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this._hide();
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}
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setIgnoreLayoutChanges(false, this.highlighterEnv.window.document.documentElement);
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return shown;
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},
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/**
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* Hide the highlighter, the outline and the infobar.
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*/
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_hide: function () {
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setIgnoreLayoutChanges(true);
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this._untrackMutations();
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this._hideBoxModel();
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this._hideInfobar();
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setIgnoreLayoutChanges(false, this.highlighterEnv.window.document.documentElement);
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},
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/**
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* Hide the infobar
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*/
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_hideInfobar: function () {
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this.getElement("infobar-container").setAttribute("hidden", "true");
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},
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/**
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* Show the infobar
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*/
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_showInfobar: function () {
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this.getElement("infobar-container").removeAttribute("hidden");
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this._updateInfobar();
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},
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/**
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* Hide the box model
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*/
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_hideBoxModel: function () {
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this.getElement("elements").setAttribute("hidden", "true");
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},
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/**
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* Show the box model
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*/
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_showBoxModel: function () {
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this.getElement("elements").removeAttribute("hidden");
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},
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/**
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* Calculate an outer quad based on the quads returned by getAdjustedQuads.
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* The BoxModelHighlighter may highlight more than one boxes, so in this case
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* create a new quad that "contains" all of these quads.
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* This is useful to position the guides and infobar.
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* This may happen if the BoxModelHighlighter is used to highlight an inline
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* element that spans line breaks.
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* @param {String} region The box-model region to get the outer quad for.
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* @return {Object} A quad-like object {p1,p2,p3,p4,bounds}
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*/
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_getOuterQuad: function (region) {
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let quads = this.currentQuads[region];
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if (!quads.length) {
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return null;
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}
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let quad = {
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p1: {x: Infinity, y: Infinity},
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p2: {x: -Infinity, y: Infinity},
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p3: {x: -Infinity, y: -Infinity},
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p4: {x: Infinity, y: -Infinity},
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bounds: {
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bottom: -Infinity,
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height: 0,
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left: Infinity,
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right: -Infinity,
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top: Infinity,
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width: 0,
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x: 0,
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y: 0,
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}
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};
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for (let q of quads) {
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quad.p1.x = Math.min(quad.p1.x, q.p1.x);
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quad.p1.y = Math.min(quad.p1.y, q.p1.y);
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quad.p2.x = Math.max(quad.p2.x, q.p2.x);
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quad.p2.y = Math.min(quad.p2.y, q.p2.y);
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quad.p3.x = Math.max(quad.p3.x, q.p3.x);
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quad.p3.y = Math.max(quad.p3.y, q.p3.y);
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quad.p4.x = Math.min(quad.p4.x, q.p4.x);
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quad.p4.y = Math.max(quad.p4.y, q.p4.y);
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quad.bounds.bottom = Math.max(quad.bounds.bottom, q.bounds.bottom);
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quad.bounds.top = Math.min(quad.bounds.top, q.bounds.top);
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quad.bounds.left = Math.min(quad.bounds.left, q.bounds.left);
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quad.bounds.right = Math.max(quad.bounds.right, q.bounds.right);
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}
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quad.bounds.x = quad.bounds.left;
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quad.bounds.y = quad.bounds.top;
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quad.bounds.width = quad.bounds.right - quad.bounds.left;
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quad.bounds.height = quad.bounds.bottom - quad.bounds.top;
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return quad;
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},
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/**
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* Update the box model as per the current node.
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*
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* @return {boolean}
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* True if the current node has a box model to be highlighted
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*/
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_updateBoxModel: function () {
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let options = this.options;
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options.region = options.region || "content";
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if (!this._nodeNeedsHighlighting()) {
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this._hideBoxModel();
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return false;
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}
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for (let i = 0; i < BOX_MODEL_REGIONS.length; i++) {
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let boxType = BOX_MODEL_REGIONS[i];
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let nextBoxType = BOX_MODEL_REGIONS[i + 1];
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let box = this.getElement(boxType);
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if (this.regionFill[boxType]) {
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box.setAttribute("style", "fill:" + this.regionFill[boxType]);
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} else {
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box.setAttribute("style", "");
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}
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// Highlight all quads for this region by setting the "d" attribute of the
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// corresponding <path>.
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let path = [];
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for (let j = 0; j < this.currentQuads[boxType].length; j++) {
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let boxQuad = this.currentQuads[boxType][j];
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let nextBoxQuad = this.currentQuads[nextBoxType]
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? this.currentQuads[nextBoxType][j]
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: null;
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path.push(this._getBoxPathCoordinates(boxQuad, nextBoxQuad));
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}
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box.setAttribute("d", path.join(" "));
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box.removeAttribute("faded");
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// If showOnly is defined, either hide the other regions, or fade them out
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// if onlyRegionArea is set too.
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if (options.showOnly && options.showOnly !== boxType) {
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if (options.onlyRegionArea) {
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box.setAttribute("faded", "true");
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} else {
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box.removeAttribute("d");
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}
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}
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if (boxType === options.region && !options.hideGuides) {
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this._showGuides(boxType);
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} else if (options.hideGuides) {
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this._hideGuides();
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}
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}
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// Un-zoom the root wrapper if the page was zoomed.
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let rootId = this.ID_CLASS_PREFIX + "root";
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this.markup.scaleRootElement(this.currentNode, rootId);
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return true;
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},
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_getBoxPathCoordinates: function (boxQuad, nextBoxQuad) {
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let {p1, p2, p3, p4} = boxQuad;
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let path;
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if (!nextBoxQuad || !this.options.onlyRegionArea) {
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// If this is the content box (inner-most box) or if we're not being asked
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// to highlight only region areas, then draw a simple rectangle.
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path = "M" + p1.x + "," + p1.y + " " +
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"L" + p2.x + "," + p2.y + " " +
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"L" + p3.x + "," + p3.y + " " +
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"L" + p4.x + "," + p4.y;
|
|
} else {
|
|
// Otherwise, just draw the region itself, not a filled rectangle.
|
|
let {p1: np1, p2: np2, p3: np3, p4: np4} = nextBoxQuad;
|
|
path = "M" + p1.x + "," + p1.y + " " +
|
|
"L" + p2.x + "," + p2.y + " " +
|
|
"L" + p3.x + "," + p3.y + " " +
|
|
"L" + p4.x + "," + p4.y + " " +
|
|
"L" + p1.x + "," + p1.y + " " +
|
|
"L" + np1.x + "," + np1.y + " " +
|
|
"L" + np4.x + "," + np4.y + " " +
|
|
"L" + np3.x + "," + np3.y + " " +
|
|
"L" + np2.x + "," + np2.y + " " +
|
|
"L" + np1.x + "," + np1.y;
|
|
}
|
|
|
|
return path;
|
|
},
|
|
|
|
/**
|
|
* Can the current node be highlighted? Does it have quads.
|
|
* @return {Boolean}
|
|
*/
|
|
_nodeNeedsHighlighting: function () {
|
|
return this.currentQuads.margin.length ||
|
|
this.currentQuads.border.length ||
|
|
this.currentQuads.padding.length ||
|
|
this.currentQuads.content.length;
|
|
},
|
|
|
|
_getOuterBounds: function () {
|
|
for (let region of ["margin", "border", "padding", "content"]) {
|
|
let quad = this._getOuterQuad(region);
|
|
|
|
if (!quad) {
|
|
// Invisible element such as a script tag.
|
|
break;
|
|
}
|
|
|
|
let {bottom, height, left, right, top, width, x, y} = quad.bounds;
|
|
|
|
if (width > 0 || height > 0) {
|
|
return {bottom, height, left, right, top, width, x, y};
|
|
}
|
|
}
|
|
|
|
return {
|
|
bottom: 0,
|
|
height: 0,
|
|
left: 0,
|
|
right: 0,
|
|
top: 0,
|
|
width: 0,
|
|
x: 0,
|
|
y: 0
|
|
};
|
|
},
|
|
|
|
/**
|
|
* We only want to show guides for horizontal and vertical edges as this helps
|
|
* to line them up. This method finds these edges and displays a guide there.
|
|
* @param {String} region The region around which the guides should be shown.
|
|
*/
|
|
_showGuides: function (region) {
|
|
let {p1, p2, p3, p4} = this._getOuterQuad(region);
|
|
|
|
let allX = [p1.x, p2.x, p3.x, p4.x].sort((a, b) => a - b);
|
|
let allY = [p1.y, p2.y, p3.y, p4.y].sort((a, b) => a - b);
|
|
let toShowX = [];
|
|
let toShowY = [];
|
|
|
|
for (let arr of [allX, allY]) {
|
|
for (let i = 0; i < arr.length; i++) {
|
|
let val = arr[i];
|
|
|
|
if (i !== arr.lastIndexOf(val)) {
|
|
if (arr === allX) {
|
|
toShowX.push(val);
|
|
} else {
|
|
toShowY.push(val);
|
|
}
|
|
arr.splice(arr.lastIndexOf(val), 1);
|
|
}
|
|
}
|
|
}
|
|
|
|
// Move guide into place or hide it if no valid co-ordinate was found.
|
|
this._updateGuide("top", toShowY[0]);
|
|
this._updateGuide("right", toShowX[1]);
|
|
this._updateGuide("bottom", toShowY[1]);
|
|
this._updateGuide("left", toShowX[0]);
|
|
},
|
|
|
|
_hideGuides: function () {
|
|
for (let side of BOX_MODEL_SIDES) {
|
|
this.getElement("guide-" + side).setAttribute("hidden", "true");
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Move a guide to the appropriate position and display it. If no point is
|
|
* passed then the guide is hidden.
|
|
*
|
|
* @param {String} side
|
|
* The guide to update
|
|
* @param {Integer} point
|
|
* x or y co-ordinate. If this is undefined we hide the guide.
|
|
*/
|
|
_updateGuide: function (side, point = -1) {
|
|
let guide = this.getElement("guide-" + side);
|
|
|
|
if (point <= 0) {
|
|
guide.setAttribute("hidden", "true");
|
|
return false;
|
|
}
|
|
|
|
if (side === "top" || side === "bottom") {
|
|
guide.setAttribute("x1", "0");
|
|
guide.setAttribute("y1", point + "");
|
|
guide.setAttribute("x2", "100%");
|
|
guide.setAttribute("y2", point + "");
|
|
} else {
|
|
guide.setAttribute("x1", point + "");
|
|
guide.setAttribute("y1", "0");
|
|
guide.setAttribute("x2", point + "");
|
|
guide.setAttribute("y2", "100%");
|
|
}
|
|
|
|
guide.removeAttribute("hidden");
|
|
|
|
return true;
|
|
},
|
|
|
|
/**
|
|
* Update node information (displayName#id.class)
|
|
*/
|
|
_updateInfobar: function () {
|
|
if (!this.currentNode) {
|
|
return;
|
|
}
|
|
|
|
let {bindingElement: node, pseudo} =
|
|
getBindingElementAndPseudo(this.currentNode);
|
|
|
|
// Update the tag, id, classes, pseudo-classes and dimensions
|
|
let displayName = inspector.getNodeDisplayName(node);
|
|
|
|
let id = node.id ? "#" + node.id : "";
|
|
|
|
let classList = (node.classList || []).length
|
|
? "." + [...node.classList].join(".")
|
|
: "";
|
|
|
|
let pseudos = this._getPseudoClasses(node).join("");
|
|
if (pseudo) {
|
|
// Display :after as ::after
|
|
pseudos += ":" + pseudo;
|
|
}
|
|
|
|
// We want to display the original `width` and `height`, instead of the ones affected
|
|
// by any zoom. Since the infobar can be displayed also for text nodes, we can't
|
|
// access the computed style for that, and this is why we recalculate them here.
|
|
let zoom = getCurrentZoom(this.win);
|
|
let { width, height } = this._getOuterQuad("border").bounds;
|
|
let dim = parseFloat((width / zoom).toPrecision(6)) +
|
|
" \u00D7 " +
|
|
parseFloat((height / zoom).toPrecision(6));
|
|
|
|
this.getElement("infobar-tagname").setTextContent(displayName);
|
|
this.getElement("infobar-id").setTextContent(id);
|
|
this.getElement("infobar-classes").setTextContent(classList);
|
|
this.getElement("infobar-pseudo-classes").setTextContent(pseudos);
|
|
this.getElement("infobar-dimensions").setTextContent(dim);
|
|
|
|
this._moveInfobar();
|
|
},
|
|
|
|
_getPseudoClasses: function (node) {
|
|
if (node.nodeType !== nodeConstants.ELEMENT_NODE) {
|
|
// hasPseudoClassLock can only be used on Elements.
|
|
return [];
|
|
}
|
|
|
|
return PSEUDO_CLASSES.filter(pseudo => hasPseudoClassLock(node, pseudo));
|
|
},
|
|
|
|
/**
|
|
* Move the Infobar to the right place in the highlighter.
|
|
*/
|
|
_moveInfobar: function () {
|
|
let bounds = this._getOuterBounds();
|
|
let container = this.getElement("infobar-container");
|
|
|
|
moveInfobar(container, bounds, this.win);
|
|
},
|
|
|
|
onWillNavigate: function ({ isTopLevel }) {
|
|
if (isTopLevel) {
|
|
this.hide();
|
|
}
|
|
}
|
|
});
|
|
exports.BoxModelHighlighter = BoxModelHighlighter;
|