зеркало из https://github.com/mozilla/gecko-dev.git
862 строки
29 KiB
JavaScript
862 строки
29 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
// This file defines these globals on the window object.
|
|
// Define them here so that ESLint can find them:
|
|
/* globals MozXULElement, MozHTMLElement, MozElements */
|
|
|
|
"use strict";
|
|
|
|
// This is loaded into chrome windows with the subscript loader. Wrap in
|
|
// a block to prevent accidentally leaking globals onto `window`.
|
|
(() => {
|
|
// Handle customElements.js being loaded as a script in addition to the subscriptLoader
|
|
// from MainProcessSingleton, to handle pages that can open both before and after
|
|
// MainProcessSingleton starts. See Bug 1501845.
|
|
if (window.MozXULElement) {
|
|
return;
|
|
}
|
|
|
|
const MozElements = {};
|
|
window.MozElements = MozElements;
|
|
|
|
const { Services } = ChromeUtils.import(
|
|
"resource://gre/modules/Services.jsm"
|
|
);
|
|
const { AppConstants } = ChromeUtils.import(
|
|
"resource://gre/modules/AppConstants.jsm"
|
|
);
|
|
const env = Cc["@mozilla.org/process/environment;1"].getService(
|
|
Ci.nsIEnvironment
|
|
);
|
|
const instrumentClasses = env.get("MOZ_INSTRUMENT_CUSTOM_ELEMENTS");
|
|
const instrumentedClasses = instrumentClasses ? new Set() : null;
|
|
const instrumentedBaseClasses = instrumentClasses ? new WeakSet() : null;
|
|
|
|
// If requested, wrap the normal customElements.define to give us a chance
|
|
// to modify the class so we can instrument function calls in local development:
|
|
if (instrumentClasses) {
|
|
let define = window.customElements.define;
|
|
window.customElements.define = function(name, c, opts) {
|
|
instrumentCustomElementClass(c);
|
|
return define.call(this, name, c, opts);
|
|
};
|
|
window.addEventListener(
|
|
"load",
|
|
() => {
|
|
MozElements.printInstrumentation(true);
|
|
},
|
|
{ once: true, capture: true }
|
|
);
|
|
}
|
|
|
|
MozElements.printInstrumentation = function(collapsed) {
|
|
let summaries = [];
|
|
let totalCalls = 0;
|
|
let totalTime = 0;
|
|
for (let c of instrumentedClasses) {
|
|
// Allow passing in something like MOZ_INSTRUMENT_CUSTOM_ELEMENTS=MozXULElement,Button to filter
|
|
let includeClass =
|
|
instrumentClasses == 1 ||
|
|
instrumentClasses
|
|
.split(",")
|
|
.some(n => c.name.toLowerCase().includes(n.toLowerCase()));
|
|
let summary = c.__instrumentation_summary;
|
|
if (includeClass && summary) {
|
|
summaries.push(summary);
|
|
totalCalls += summary.totalCalls;
|
|
totalTime += summary.totalTime;
|
|
}
|
|
}
|
|
if (summaries.length) {
|
|
let groupName = `Instrumentation data for custom elements in ${document.documentURI}`;
|
|
console[collapsed ? "groupCollapsed" : "group"](groupName);
|
|
console.log(
|
|
`Total function calls ${totalCalls} and total time spent inside ${totalTime.toFixed(
|
|
2
|
|
)}`
|
|
);
|
|
for (let summary of summaries) {
|
|
console.log(`${summary.name} (# instances: ${summary.instances})`);
|
|
if (Object.keys(summary.data).length > 1) {
|
|
console.table(summary.data);
|
|
}
|
|
}
|
|
console.groupEnd(groupName);
|
|
}
|
|
};
|
|
|
|
function instrumentCustomElementClass(c) {
|
|
// Climb up prototype chain to see if we inherit from a MozElement.
|
|
// Keep track of classes to instrument, for example:
|
|
// MozMenuCaption->MozMenuBase->BaseText->BaseControl->MozXULElement
|
|
let inheritsFromBase = instrumentedBaseClasses.has(c);
|
|
let classesToInstrument = [c];
|
|
let proto = Object.getPrototypeOf(c);
|
|
while (proto) {
|
|
classesToInstrument.push(proto);
|
|
if (instrumentedBaseClasses.has(proto)) {
|
|
inheritsFromBase = true;
|
|
break;
|
|
}
|
|
proto = Object.getPrototypeOf(proto);
|
|
}
|
|
|
|
if (inheritsFromBase) {
|
|
for (let c of classesToInstrument.reverse()) {
|
|
instrumentIndividualClass(c);
|
|
}
|
|
}
|
|
}
|
|
|
|
function instrumentIndividualClass(c) {
|
|
if (instrumentedClasses.has(c)) {
|
|
return;
|
|
}
|
|
|
|
instrumentedClasses.add(c);
|
|
let data = { instances: 0 };
|
|
|
|
function wrapFunction(name, fn) {
|
|
return function() {
|
|
if (!data[name]) {
|
|
data[name] = { time: 0, calls: 0 };
|
|
}
|
|
data[name].calls++;
|
|
let n = performance.now();
|
|
let r = fn.apply(this, arguments);
|
|
data[name].time += performance.now() - n;
|
|
return r;
|
|
};
|
|
}
|
|
function wrapPropertyDescriptor(obj, name) {
|
|
if (name == "constructor") {
|
|
return;
|
|
}
|
|
let prop = Object.getOwnPropertyDescriptor(obj, name);
|
|
if (prop.get) {
|
|
prop.get = wrapFunction(`<get> ${name}`, prop.get);
|
|
}
|
|
if (prop.set) {
|
|
prop.set = wrapFunction(`<set> ${name}`, prop.set);
|
|
}
|
|
if (prop.writable && prop.value && prop.value.apply) {
|
|
prop.value = wrapFunction(name, prop.value);
|
|
}
|
|
Object.defineProperty(obj, name, prop);
|
|
}
|
|
|
|
// Handle static properties
|
|
for (let name of Object.getOwnPropertyNames(c)) {
|
|
wrapPropertyDescriptor(c, name);
|
|
}
|
|
|
|
// Handle instance properties
|
|
for (let name of Object.getOwnPropertyNames(c.prototype)) {
|
|
wrapPropertyDescriptor(c.prototype, name);
|
|
}
|
|
|
|
c.__instrumentation_data = data;
|
|
Object.defineProperty(c, "__instrumentation_summary", {
|
|
enumerable: false,
|
|
configurable: false,
|
|
get() {
|
|
if (data.instances == 0) {
|
|
return null;
|
|
}
|
|
|
|
let clonedData = JSON.parse(JSON.stringify(data));
|
|
delete clonedData.instances;
|
|
let totalCalls = 0;
|
|
let totalTime = 0;
|
|
for (let d in clonedData) {
|
|
let { time, calls } = clonedData[d];
|
|
time = parseFloat(time.toFixed(2));
|
|
totalCalls += calls;
|
|
totalTime += time;
|
|
clonedData[d]["time (ms)"] = time;
|
|
delete clonedData[d].time;
|
|
clonedData[d].timePerCall = parseFloat((time / calls).toFixed(4));
|
|
}
|
|
|
|
let timePerCall = parseFloat((totalTime / totalCalls).toFixed(4));
|
|
totalTime = parseFloat(totalTime.toFixed(2));
|
|
|
|
// Add a spaced-out final row with summed up totals
|
|
clonedData["\ntotals"] = {
|
|
"time (ms)": `\n${totalTime}`,
|
|
calls: `\n${totalCalls}`,
|
|
timePerCall: `\n${timePerCall}`,
|
|
};
|
|
return {
|
|
instances: data.instances,
|
|
data: clonedData,
|
|
name: c.name,
|
|
totalCalls,
|
|
totalTime,
|
|
};
|
|
},
|
|
});
|
|
}
|
|
|
|
// The listener of DOMContentLoaded must be set on window, rather than
|
|
// document, because the window can go away before the event is fired.
|
|
// In that case, we don't want to initialize anything, otherwise we
|
|
// may be leaking things because they will never be destroyed after.
|
|
let gIsDOMContentLoaded = false;
|
|
const gElementsPendingConnection = new Set();
|
|
window.addEventListener(
|
|
"DOMContentLoaded",
|
|
() => {
|
|
gIsDOMContentLoaded = true;
|
|
for (let element of gElementsPendingConnection) {
|
|
try {
|
|
if (element.isConnected) {
|
|
element.isRunningDelayedConnectedCallback = true;
|
|
element.connectedCallback();
|
|
}
|
|
} catch (ex) {
|
|
console.error(ex);
|
|
}
|
|
element.isRunningDelayedConnectedCallback = false;
|
|
}
|
|
gElementsPendingConnection.clear();
|
|
},
|
|
{ once: true, capture: true }
|
|
);
|
|
|
|
const gXULDOMParser = new DOMParser();
|
|
gXULDOMParser.forceEnableXULXBL();
|
|
|
|
MozElements.MozElementMixin = Base => {
|
|
let MozElementBase = class extends Base {
|
|
constructor() {
|
|
super();
|
|
|
|
if (instrumentClasses) {
|
|
let proto = this.constructor;
|
|
while (proto && proto != Base) {
|
|
proto.__instrumentation_data.instances++;
|
|
proto = Object.getPrototypeOf(proto);
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* A declarative way to wire up attribute inheritance and automatically generate
|
|
* the `observedAttributes` getter. For example, if you returned:
|
|
* {
|
|
* ".foo": "bar,baz=bat"
|
|
* }
|
|
*
|
|
* Then the base class will automatically return ["bar", "bat"] from `observedAttributes`,
|
|
* and set up an `attributeChangedCallback` to pass those attributes down onto an element
|
|
* matching the ".foo" selector.
|
|
*
|
|
* See the `inheritAttribute` function for more details on the attribute string format.
|
|
*
|
|
* @return {Object<string selector, string attributes>}
|
|
*/
|
|
static get inheritedAttributes() {
|
|
return null;
|
|
}
|
|
|
|
static get flippedInheritedAttributes() {
|
|
// Have to be careful here, if a subclass overrides inheritedAttributes
|
|
// and its parent class is instantiated first, then reading
|
|
// this._flippedInheritedAttributes on the child class will return the
|
|
// computed value from the parent. We store it separately on each class
|
|
// to ensure everything works correctly when inheritedAttributes is
|
|
// overridden.
|
|
if (!this.hasOwnProperty("_flippedInheritedAttributes")) {
|
|
let { inheritedAttributes } = this;
|
|
if (!inheritedAttributes) {
|
|
this._flippedInheritedAttributes = null;
|
|
} else {
|
|
this._flippedInheritedAttributes = {};
|
|
for (let selector in inheritedAttributes) {
|
|
let attrRules = inheritedAttributes[selector].split(",");
|
|
for (let attrRule of attrRules) {
|
|
let attrName = attrRule;
|
|
let attrNewName = attrRule;
|
|
let split = attrName.split("=");
|
|
if (split.length == 2) {
|
|
attrName = split[1];
|
|
attrNewName = split[0];
|
|
}
|
|
|
|
if (!this._flippedInheritedAttributes[attrName]) {
|
|
this._flippedInheritedAttributes[attrName] = [];
|
|
}
|
|
this._flippedInheritedAttributes[attrName].push([
|
|
selector,
|
|
attrNewName,
|
|
]);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return this._flippedInheritedAttributes;
|
|
}
|
|
/*
|
|
* Generate this array based on `inheritedAttributes`, if any. A class is free to override
|
|
* this if it needs to do something more complex or wants to opt out of this behavior.
|
|
*/
|
|
static get observedAttributes() {
|
|
return Object.keys(this.flippedInheritedAttributes || {});
|
|
}
|
|
|
|
/*
|
|
* Provide default lifecycle callback for attribute changes that will inherit attributes
|
|
* based on the static `inheritedAttributes` Object. This can be overridden by callers.
|
|
*/
|
|
attributeChangedCallback(name, oldValue, newValue) {
|
|
if (oldValue === newValue || !this.initializedAttributeInheritance) {
|
|
return;
|
|
}
|
|
|
|
let list = this.constructor.flippedInheritedAttributes[name];
|
|
if (list) {
|
|
this.inheritAttribute(list, name);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* After setting content, calling this will cache the elements from selectors in the
|
|
* static `inheritedAttributes` Object. It'll also do an initial call to `this.inheritAttributes()`,
|
|
* so in the simple case, this is the only function you need to call.
|
|
*
|
|
* This should be called any time the children that are inheriting attributes changes. For instance,
|
|
* it's common in a connectedCallback to do something like:
|
|
*
|
|
* this.textContent = "";
|
|
* this.append(MozXULElement.parseXULToFragment(`<label />`))
|
|
* this.initializeAttributeInheritance();
|
|
*
|
|
*/
|
|
initializeAttributeInheritance() {
|
|
let { flippedInheritedAttributes } = this.constructor;
|
|
if (!flippedInheritedAttributes) {
|
|
return;
|
|
}
|
|
|
|
// Clear out any existing cached elements:
|
|
this._inheritedElements = null;
|
|
|
|
this.initializedAttributeInheritance = true;
|
|
for (let attr in flippedInheritedAttributes) {
|
|
if (this.hasAttribute(attr)) {
|
|
this.inheritAttribute(flippedInheritedAttributes[attr], attr);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Implements attribute value inheritance by child elements.
|
|
*
|
|
* @param {array} list
|
|
* An array of (to-element-selector, to-attr) pairs.
|
|
* @param {string} attr
|
|
* An attribute to propagate.
|
|
*/
|
|
inheritAttribute(list, attr) {
|
|
if (!this._inheritedElements) {
|
|
this._inheritedElements = {};
|
|
}
|
|
|
|
let hasAttr = this.hasAttribute(attr);
|
|
let attrValue = this.getAttribute(attr);
|
|
|
|
for (let [selector, newAttr] of list) {
|
|
if (!(selector in this._inheritedElements)) {
|
|
this._inheritedElements[
|
|
selector
|
|
] = this.getElementForAttrInheritance(selector);
|
|
}
|
|
let el = this._inheritedElements[selector];
|
|
if (el) {
|
|
if (newAttr == "text") {
|
|
el.textContent = hasAttr ? attrValue : "";
|
|
} else if (hasAttr) {
|
|
el.setAttribute(newAttr, attrValue);
|
|
} else {
|
|
el.removeAttribute(newAttr);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Used in setting up attribute inheritance. Takes a selector and returns
|
|
* an element for that selector from shadow DOM if there is a shadowRoot,
|
|
* or from the light DOM if not.
|
|
*
|
|
* Here's one problem this solves. ElementB extends ElementA which extends
|
|
* MozXULElement. ElementA has a shadowRoot. ElementB tries to inherit
|
|
* attributes in light DOM by calling `initializeAttributeInheritance`
|
|
* but that fails because it defaults to inheriting from the shadow DOM
|
|
* and not the light DOM. (See bug 1545824.)
|
|
*
|
|
* To solve this, ElementB can override `getElementForAttrInheritance` so
|
|
* it queries the light DOM for some selectors as needed. For example:
|
|
*
|
|
* class ElementA extends MozXULElement {
|
|
* static get inheritedAttributes() {
|
|
* return { ".one": "attr" };
|
|
* }
|
|
* }
|
|
*
|
|
* class ElementB extends customElements.get("elementa") {
|
|
* static get inheritedAttributes() {
|
|
* return Object.assign({}, super.inheritedAttributes(), {
|
|
* ".two": "attr",
|
|
* });
|
|
* }
|
|
* getElementForAttrInheritance(selector) {
|
|
* if (selector == ".two") {
|
|
* return this.querySelector(selector)
|
|
* } else {
|
|
* return super.getElementForAttrInheritance(selector);
|
|
* }
|
|
* }
|
|
* }
|
|
*
|
|
* @param {string} selector
|
|
* A selector used to query an element.
|
|
*
|
|
* @return {Element} The element found by the selector.
|
|
*/
|
|
getElementForAttrInheritance(selector) {
|
|
let parent = this.shadowRoot || this;
|
|
return parent.querySelector(selector);
|
|
}
|
|
|
|
/**
|
|
* Sometimes an element may not want to run connectedCallback logic during
|
|
* parse. This could be because we don't want to initialize the element before
|
|
* the element's contents have been fully parsed, or for performance reasons.
|
|
* If you'd like to opt-in to this, then add this to the beginning of your
|
|
* `connectedCallback` and `disconnectedCallback`:
|
|
*
|
|
* if (this.delayConnectedCallback()) { return }
|
|
*
|
|
* And this at the beginning of your `attributeChangedCallback`
|
|
*
|
|
* if (!this.isConnectedAndReady) { return; }
|
|
*/
|
|
delayConnectedCallback() {
|
|
if (gIsDOMContentLoaded) {
|
|
return false;
|
|
}
|
|
gElementsPendingConnection.add(this);
|
|
return true;
|
|
}
|
|
|
|
get isConnectedAndReady() {
|
|
return gIsDOMContentLoaded && this.isConnected;
|
|
}
|
|
|
|
/**
|
|
* Passes DOM events to the on_<event type> methods.
|
|
*/
|
|
handleEvent(event) {
|
|
let methodName = "on_" + event.type;
|
|
if (methodName in this) {
|
|
this[methodName](event);
|
|
} else {
|
|
throw new Error("Unrecognized event: " + event.type);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Used by custom elements for caching fragments. We now would be
|
|
* caching once per class while also supporting subclasses.
|
|
*
|
|
* If available, returns the cached fragment.
|
|
* Otherwise, creates it.
|
|
*
|
|
* Example:
|
|
*
|
|
* class ElementA extends MozXULElement {
|
|
* static get markup() {
|
|
* return `<hbox class="example"`;
|
|
* }
|
|
*
|
|
* static get entities() {
|
|
* // Optional field for parseXULToFragment
|
|
* return `["chrome://global/locale/notification.dtd"]`;
|
|
* }
|
|
*
|
|
* connectedCallback() {
|
|
* this.appendChild(this.constructor.fragment);
|
|
* }
|
|
* }
|
|
*
|
|
* @return {importedNode} The imported node that has not been
|
|
* inserted into document tree.
|
|
*/
|
|
static get fragment() {
|
|
if (!this.hasOwnProperty("_fragment")) {
|
|
let markup = this.markup;
|
|
if (markup) {
|
|
this._fragment = MozXULElement.parseXULToFragment(
|
|
markup,
|
|
this.entities
|
|
);
|
|
} else {
|
|
throw new Error("Markup is null");
|
|
}
|
|
}
|
|
return document.importNode(this._fragment, true);
|
|
}
|
|
|
|
/**
|
|
* Allows eager deterministic construction of XUL elements with XBL attached, by
|
|
* parsing an element tree and returning a DOM fragment to be inserted in the
|
|
* document before any of the inner elements is referenced by JavaScript.
|
|
*
|
|
* This process is required instead of calling the createElement method directly
|
|
* because bindings get attached when:
|
|
*
|
|
* 1. the node gets a layout frame constructed, or
|
|
* 2. the node gets its JavaScript reflector created, if it's in the document,
|
|
*
|
|
* whichever happens first. The createElement method would return a JavaScript
|
|
* reflector, but the element wouldn't be in the document, so the node wouldn't
|
|
* get XBL attached. After that point, even if the node is inserted into a
|
|
* document, it won't get XBL attached until either the frame is constructed or
|
|
* the reflector is garbage collected and the element is touched again.
|
|
*
|
|
* @param {string} str
|
|
* String with the XML representation of XUL elements.
|
|
* @param {string[]} [entities]
|
|
* An array of DTD URLs containing entity definitions.
|
|
*
|
|
* @return {DocumentFragment} `DocumentFragment` instance containing
|
|
* the corresponding element tree, including element nodes
|
|
* but excluding any text node.
|
|
*/
|
|
static parseXULToFragment(str, entities = []) {
|
|
let doc = gXULDOMParser.parseFromSafeString(
|
|
`
|
|
${
|
|
entities.length
|
|
? `<!DOCTYPE bindings [
|
|
${entities.reduce((preamble, url, index) => {
|
|
return (
|
|
preamble +
|
|
`<!ENTITY % _dtd-${index} SYSTEM "${url}">
|
|
%_dtd-${index};
|
|
`
|
|
);
|
|
}, "")}
|
|
]>`
|
|
: ""
|
|
}
|
|
<box xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
|
|
xmlns:html="http://www.w3.org/1999/xhtml">
|
|
${str}
|
|
</box>
|
|
`,
|
|
"application/xml"
|
|
);
|
|
|
|
if (doc.documentElement.localName === "parsererror") {
|
|
throw new Error("not well-formed XML");
|
|
}
|
|
|
|
// The XUL/XBL parser is set to ignore all-whitespace nodes, whereas (X)HTML
|
|
// does not do this. Most XUL code assumes that the whitespace has been
|
|
// stripped out, so we simply remove all text nodes after using the parser.
|
|
let nodeIterator = doc.createNodeIterator(doc, NodeFilter.SHOW_TEXT);
|
|
let currentNode = nodeIterator.nextNode();
|
|
while (currentNode) {
|
|
// Remove whitespace-only nodes. Regex is taken from:
|
|
// https://developer.mozilla.org/en-US/docs/Web/API/Document_Object_Model/Whitespace_in_the_DOM
|
|
if (!/[^\t\n\r ]/.test(currentNode.textContent)) {
|
|
currentNode.remove();
|
|
}
|
|
|
|
currentNode = nodeIterator.nextNode();
|
|
}
|
|
// We use a range here so that we don't access the inner DOM elements from
|
|
// JavaScript before they are imported and inserted into a document.
|
|
let range = doc.createRange();
|
|
range.selectNodeContents(doc.querySelector("box"));
|
|
return range.extractContents();
|
|
}
|
|
|
|
/**
|
|
* Insert a localization link to an FTL file. This is used so that
|
|
* a Custom Element can wait to inject the link until it's connected,
|
|
* and so that consuming documents don't require the correct <link>
|
|
* present in the markup.
|
|
*
|
|
* @param path
|
|
* The path to the FTL file
|
|
*/
|
|
static insertFTLIfNeeded(path) {
|
|
let container = document.head || document.querySelector("linkset");
|
|
if (!container) {
|
|
if (
|
|
document.documentElement.namespaceURI ===
|
|
"http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
|
|
) {
|
|
container = document.createXULElement("linkset");
|
|
document.documentElement.appendChild(container);
|
|
} else if (document.documentURI == AppConstants.BROWSER_CHROME_URL) {
|
|
// Special case for browser.xhtml. Here `document.head` is null, so
|
|
// just insert the link at the end of the window.
|
|
container = document.documentElement;
|
|
} else {
|
|
throw new Error(
|
|
"Attempt to inject localization link before document.head is available"
|
|
);
|
|
}
|
|
}
|
|
|
|
for (let link of container.querySelectorAll("link")) {
|
|
if (link.getAttribute("href") == path) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
let link = document.createElementNS(
|
|
"http://www.w3.org/1999/xhtml",
|
|
"link"
|
|
);
|
|
link.setAttribute("rel", "localization");
|
|
link.setAttribute("href", path);
|
|
|
|
container.appendChild(link);
|
|
}
|
|
|
|
/**
|
|
* Indicate that a class defining a XUL element implements one or more
|
|
* XPCOM interfaces by adding a getCustomInterface implementation to it,
|
|
* as well as an implementation of QueryInterface.
|
|
*
|
|
* The supplied class should implement the properties and methods of
|
|
* all of the interfaces that are specified.
|
|
*
|
|
* @param cls
|
|
* The class that implements the interface.
|
|
* @param names
|
|
* Array of interface names.
|
|
*/
|
|
static implementCustomInterface(cls, ifaces) {
|
|
if (cls.prototype.customInterfaces) {
|
|
ifaces.push(...cls.prototype.customInterfaces);
|
|
}
|
|
cls.prototype.customInterfaces = ifaces;
|
|
|
|
cls.prototype.QueryInterface = ChromeUtils.generateQI(ifaces);
|
|
cls.prototype.getCustomInterfaceCallback = function getCustomInterfaceCallback(
|
|
ifaceToCheck
|
|
) {
|
|
if (
|
|
cls.prototype.customInterfaces.some(iface =>
|
|
iface.equals(ifaceToCheck)
|
|
)
|
|
) {
|
|
return getInterfaceProxy(this);
|
|
}
|
|
return null;
|
|
};
|
|
}
|
|
};
|
|
|
|
// Rename the class so we can distinguish between MozXULElement and MozXULPopupElement, for example.
|
|
Object.defineProperty(MozElementBase, "name", { value: `Moz${Base.name}` });
|
|
if (instrumentedBaseClasses) {
|
|
instrumentedBaseClasses.add(MozElementBase);
|
|
}
|
|
return MozElementBase;
|
|
};
|
|
|
|
const MozXULElement = MozElements.MozElementMixin(XULElement);
|
|
const MozHTMLElement = MozElements.MozElementMixin(HTMLElement);
|
|
|
|
/**
|
|
* Given an object, add a proxy that reflects interface implementations
|
|
* onto the object itself.
|
|
*/
|
|
function getInterfaceProxy(obj) {
|
|
/* globals MozQueryInterface */
|
|
if (!obj._customInterfaceProxy) {
|
|
obj._customInterfaceProxy = new Proxy(obj, {
|
|
get(target, prop, receiver) {
|
|
let propOrMethod = target[prop];
|
|
if (typeof propOrMethod == "function") {
|
|
if (propOrMethod instanceof MozQueryInterface) {
|
|
return Reflect.get(target, prop, receiver);
|
|
}
|
|
return function(...args) {
|
|
return propOrMethod.apply(target, args);
|
|
};
|
|
}
|
|
return propOrMethod;
|
|
},
|
|
});
|
|
}
|
|
|
|
return obj._customInterfaceProxy;
|
|
}
|
|
|
|
MozElements.BaseControlMixin = Base => {
|
|
class BaseControl extends Base {
|
|
get disabled() {
|
|
return this.getAttribute("disabled") == "true";
|
|
}
|
|
|
|
set disabled(val) {
|
|
if (val) {
|
|
this.setAttribute("disabled", "true");
|
|
} else {
|
|
this.removeAttribute("disabled");
|
|
}
|
|
}
|
|
|
|
get tabIndex() {
|
|
return parseInt(this.getAttribute("tabindex")) || 0;
|
|
}
|
|
|
|
set tabIndex(val) {
|
|
if (val) {
|
|
this.setAttribute("tabindex", val);
|
|
} else {
|
|
this.removeAttribute("tabindex");
|
|
}
|
|
}
|
|
}
|
|
|
|
MozXULElement.implementCustomInterface(BaseControl, [
|
|
Ci.nsIDOMXULControlElement,
|
|
]);
|
|
return BaseControl;
|
|
};
|
|
MozElements.BaseControl = MozElements.BaseControlMixin(MozXULElement);
|
|
|
|
const BaseTextMixin = Base =>
|
|
class BaseText extends MozElements.BaseControlMixin(Base) {
|
|
set label(val) {
|
|
this.setAttribute("label", val);
|
|
}
|
|
|
|
get label() {
|
|
return this.getAttribute("label");
|
|
}
|
|
|
|
set crop(val) {
|
|
this.setAttribute("crop", val);
|
|
}
|
|
|
|
get crop() {
|
|
return this.getAttribute("crop");
|
|
}
|
|
|
|
set image(val) {
|
|
this.setAttribute("image", val);
|
|
}
|
|
|
|
get image() {
|
|
return this.getAttribute("image");
|
|
}
|
|
|
|
set command(val) {
|
|
this.setAttribute("command", val);
|
|
}
|
|
|
|
get command() {
|
|
return this.getAttribute("command");
|
|
}
|
|
|
|
set accessKey(val) {
|
|
// Always store on the control
|
|
this.setAttribute("accesskey", val);
|
|
// If there is a label, change the accesskey on the labelElement
|
|
// if it's also set there
|
|
if (this.labelElement) {
|
|
this.labelElement.accessKey = val;
|
|
}
|
|
}
|
|
|
|
get accessKey() {
|
|
return this.labelElement
|
|
? this.labelElement.accessKey
|
|
: this.getAttribute("accesskey");
|
|
}
|
|
};
|
|
MozElements.BaseTextMixin = BaseTextMixin;
|
|
MozElements.BaseText = BaseTextMixin(MozXULElement);
|
|
|
|
// Attach the base class to the window so other scripts can use it:
|
|
window.MozXULElement = MozXULElement;
|
|
window.MozHTMLElement = MozHTMLElement;
|
|
|
|
customElements.setElementCreationCallback("browser", () => {
|
|
Services.scriptloader.loadSubScript(
|
|
"chrome://global/content/elements/browser-custom-element.js",
|
|
window
|
|
);
|
|
});
|
|
|
|
// Skip loading any extra custom elements in the extension dummy document
|
|
// and GeckoView windows.
|
|
const loadExtraCustomElements = !(
|
|
document.documentURI == "chrome://extensions/content/dummy.xhtml" ||
|
|
document.documentURI == "chrome://geckoview/content/geckoview.xhtml"
|
|
);
|
|
if (loadExtraCustomElements) {
|
|
for (let script of [
|
|
"chrome://global/content/elements/arrowscrollbox.js",
|
|
"chrome://global/content/elements/dialog.js",
|
|
"chrome://global/content/elements/general.js",
|
|
"chrome://global/content/elements/button.js",
|
|
"chrome://global/content/elements/checkbox.js",
|
|
"chrome://global/content/elements/menu.js",
|
|
"chrome://global/content/elements/menupopup.js",
|
|
"chrome://global/content/elements/moz-input-box.js",
|
|
"chrome://global/content/elements/notificationbox.js",
|
|
"chrome://global/content/elements/panel.js",
|
|
"chrome://global/content/elements/popupnotification.js",
|
|
"chrome://global/content/elements/radio.js",
|
|
"chrome://global/content/elements/richlistbox.js",
|
|
"chrome://global/content/elements/autocomplete-popup.js",
|
|
"chrome://global/content/elements/autocomplete-richlistitem.js",
|
|
"chrome://global/content/elements/tabbox.js",
|
|
"chrome://global/content/elements/text.js",
|
|
"chrome://global/content/elements/toolbarbutton.js",
|
|
"chrome://global/content/elements/tree.js",
|
|
"chrome://global/content/elements/wizard.js",
|
|
]) {
|
|
Services.scriptloader.loadSubScript(script, window);
|
|
}
|
|
|
|
for (let [tag, script] of [
|
|
["button-group", "chrome://global/content/elements/named-deck.js"],
|
|
["findbar", "chrome://global/content/elements/findbar.js"],
|
|
["menulist", "chrome://global/content/elements/menulist.js"],
|
|
["message-bar", "chrome://global/content/elements/message-bar.js"],
|
|
["named-deck", "chrome://global/content/elements/named-deck.js"],
|
|
["named-deck-button", "chrome://global/content/elements/named-deck.js"],
|
|
["search-textbox", "chrome://global/content/elements/search-textbox.js"],
|
|
["stringbundle", "chrome://global/content/elements/stringbundle.js"],
|
|
[
|
|
"printpreview-pagination",
|
|
"chrome://global/content/printPreviewPagination.js",
|
|
],
|
|
[
|
|
"autocomplete-input",
|
|
"chrome://global/content/elements/autocomplete-input.js",
|
|
],
|
|
["editor", "chrome://global/content/elements/editor.js"],
|
|
]) {
|
|
customElements.setElementCreationCallback(tag, () => {
|
|
Services.scriptloader.loadSubScript(script, window);
|
|
});
|
|
}
|
|
}
|
|
})();
|