/
Window.js
779 lines (664 loc) · 24.3 KB
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Window.js
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"use strict";
const vm = require("vm");
const webIDLConversions = require("webidl-conversions");
const { CSSStyleDeclaration } = require("cssstyle");
const { Performance: RawPerformance } = require("w3c-hr-time");
const notImplemented = require("./not-implemented");
const { installInterfaces } = require("../living/interfaces");
const { define, mixin } = require("../utils");
const Element = require("../living/generated/Element");
const EventTarget = require("../living/generated/EventTarget");
const PageTransitionEvent = require("../living/generated/PageTransitionEvent");
const namedPropertiesWindow = require("../living/named-properties-window");
const postMessage = require("../living/post-message");
const DOMException = require("domexception/webidl2js-wrapper");
const { btoa, atob } = require("abab");
const idlUtils = require("../living/generated/utils");
const WebSocketImpl = require("../living/websockets/WebSocket-impl").implementation;
const BarProp = require("../living/generated/BarProp");
const documents = require("../living/documents.js");
const External = require("../living/generated/External");
const Navigator = require("../living/generated/Navigator");
const Performance = require("../living/generated/Performance");
const Screen = require("../living/generated/Screen");
const Storage = require("../living/generated/Storage");
const Selection = require("../living/generated/Selection");
const reportException = require("../living/helpers/runtime-script-errors");
const { fireAnEvent } = require("../living/helpers/events");
const SessionHistory = require("../living/window/SessionHistory");
const { forEachMatchingSheetRuleOfElement, getResolvedValue, propertiesWithResolvedValueImplemented } =
require("../living/helpers/style-rules");
const CustomElementRegistry = require("../living/generated/CustomElementRegistry");
const jsGlobals = require("./js-globals.json");
const GlobalEventHandlersImpl = require("../living/nodes/GlobalEventHandlers-impl").implementation;
const WindowEventHandlersImpl = require("../living/nodes/WindowEventHandlers-impl").implementation;
exports.createWindow = function (options) {
return new Window(options);
};
const jsGlobalEntriesToInstall = Object.entries(jsGlobals).filter(([name]) => name in global);
// https://html.spec.whatwg.org/#the-window-object
function setupWindow(windowInstance, { runScripts }) {
if (runScripts === "outside-only" || runScripts === "dangerously") {
contextifyWindow(windowInstance);
// Without this, these globals will only appear to scripts running inside the context using vm.runScript; they will
// not appear to scripts running from the outside, including to JSDOM implementation code.
for (const [globalName, globalPropDesc] of jsGlobalEntriesToInstall) {
const propDesc = { ...globalPropDesc, value: vm.runInContext(globalName, windowInstance) };
Object.defineProperty(windowInstance, globalName, propDesc);
}
} else {
// Without contextifying the window, none of the globals will exist. So, let's at least alias them from the Node.js
// context. See https://github.com/jsdom/jsdom/issues/2727 for more background and discussion.
for (const [globalName, globalPropDesc] of jsGlobalEntriesToInstall) {
const propDesc = { ...globalPropDesc, value: global[globalName] };
Object.defineProperty(windowInstance, globalName, propDesc);
}
}
installInterfaces(windowInstance, ["Window"]);
const EventTargetConstructor = windowInstance.EventTarget;
// eslint-disable-next-line func-name-matching, func-style, no-shadow
const windowConstructor = function Window() {
throw new TypeError("Illegal constructor");
};
Object.setPrototypeOf(windowConstructor, EventTargetConstructor);
Object.defineProperty(windowInstance, "Window", {
configurable: true,
writable: true,
value: windowConstructor
});
const windowPrototype = Object.create(EventTargetConstructor.prototype);
Object.defineProperties(windowPrototype, {
constructor: {
value: windowConstructor,
writable: true,
configurable: true
},
[Symbol.toStringTag]: {
value: "Window",
configurable: true
}
});
windowConstructor.prototype = windowPrototype;
Object.setPrototypeOf(windowInstance, windowPrototype);
EventTarget.setup(windowInstance, windowInstance);
mixin(windowInstance, WindowEventHandlersImpl.prototype);
mixin(windowInstance, GlobalEventHandlersImpl.prototype);
windowInstance._initGlobalEvents();
windowInstance._globalObject = windowInstance;
}
// NOTE: per https://heycam.github.io/webidl/#Global, all properties on the Window object must be own-properties.
// That is why we assign everything inside of the constructor, instead of using a shared prototype.
// You can verify this in e.g. Firefox or Internet Explorer, which do a good job with Web IDL compliance.
function Window(options) {
setupWindow(this, { runScripts: options.runScripts });
const rawPerformance = new RawPerformance();
const windowInitialized = rawPerformance.now();
const window = this;
///// PRIVATE DATA PROPERTIES
this._resourceLoader = options.resourceLoader;
// vm initialization is deferred until script processing is activated
this._globalProxy = this;
Object.defineProperty(idlUtils.implForWrapper(this), idlUtils.wrapperSymbol, { get: () => this._globalProxy });
// List options explicitly to be clear which are passed through
this._document = documents.createWrapper(window, {
parsingMode: options.parsingMode,
contentType: options.contentType,
encoding: options.encoding,
cookieJar: options.cookieJar,
url: options.url,
lastModified: options.lastModified,
referrer: options.referrer,
concurrentNodeIterators: options.concurrentNodeIterators,
parseOptions: options.parseOptions,
defaultView: this._globalProxy,
global: this
}, { alwaysUseDocumentClass: true });
if (vm.isContext(window)) {
const documentImpl = idlUtils.implForWrapper(window._document);
documentImpl._defaultView = window._globalProxy = vm.runInContext("this", window);
}
const documentOrigin = idlUtils.implForWrapper(this._document)._origin;
this._origin = documentOrigin;
// https://html.spec.whatwg.org/#session-history
this._sessionHistory = new SessionHistory({
document: idlUtils.implForWrapper(this._document),
url: idlUtils.implForWrapper(this._document)._URL,
stateObject: null
}, this);
this._virtualConsole = options.virtualConsole;
this._runScripts = options.runScripts;
// Set up the window as if it's a top level window.
// If it's not, then references will be corrected by frame/iframe code.
this._parent = this._top = this._globalProxy;
this._frameElement = null;
// This implements window.frames.length, since window.frames returns a
// self reference to the window object. This value is incremented in the
// HTMLFrameElement implementation.
this._length = 0;
this._pretendToBeVisual = options.pretendToBeVisual;
this._storageQuota = options.storageQuota;
// Some properties (such as localStorage and sessionStorage) share data
// between windows in the same origin. This object is intended
// to contain such data.
if (options.commonForOrigin && options.commonForOrigin[documentOrigin]) {
this._commonForOrigin = options.commonForOrigin;
} else {
this._commonForOrigin = {
[documentOrigin]: {
localStorageArea: new Map(),
sessionStorageArea: new Map(),
windowsInSameOrigin: [this]
}
};
}
this._currentOriginData = this._commonForOrigin[documentOrigin];
///// WEB STORAGE
this._localStorage = Storage.create(window, [], {
associatedWindow: this,
storageArea: this._currentOriginData.localStorageArea,
type: "localStorage",
url: this._document.documentURI,
storageQuota: this._storageQuota
});
this._sessionStorage = Storage.create(window, [], {
associatedWindow: this,
storageArea: this._currentOriginData.sessionStorageArea,
type: "sessionStorage",
url: this._document.documentURI,
storageQuota: this._storageQuota
});
///// SELECTION
// https://w3c.github.io/selection-api/#dfn-selection
this._selection = Selection.createImpl(window);
// https://w3c.github.io/selection-api/#dom-window
this.getSelection = function () {
return window._selection;
};
///// GETTERS
const locationbar = BarProp.create(window);
const menubar = BarProp.create(window);
const personalbar = BarProp.create(window);
const scrollbars = BarProp.create(window);
const statusbar = BarProp.create(window);
const toolbar = BarProp.create(window);
const external = External.create(window);
const navigator = Navigator.create(window, [], { userAgent: this._resourceLoader._userAgent });
const performance = Performance.create(window, [], { rawPerformance });
const screen = Screen.create(window);
const customElementRegistry = CustomElementRegistry.create(window);
define(this, {
get length() {
return window._length;
},
get window() {
return window._globalProxy;
},
get frameElement() {
return idlUtils.wrapperForImpl(window._frameElement);
},
get frames() {
return window._globalProxy;
},
get self() {
return window._globalProxy;
},
get parent() {
return window._parent;
},
get top() {
return window._top;
},
get document() {
return window._document;
},
get external() {
return external;
},
get location() {
return idlUtils.wrapperForImpl(idlUtils.implForWrapper(window._document)._location);
},
get history() {
return idlUtils.wrapperForImpl(idlUtils.implForWrapper(window._document)._history);
},
get navigator() {
return navigator;
},
get locationbar() {
return locationbar;
},
get menubar() {
return menubar;
},
get personalbar() {
return personalbar;
},
get scrollbars() {
return scrollbars;
},
get statusbar() {
return statusbar;
},
get toolbar() {
return toolbar;
},
get performance() {
return performance;
},
get screen() {
return screen;
},
get origin() {
return window._origin;
},
// The origin IDL attribute is defined with [Replaceable].
set origin(value) {
Object.defineProperty(this, "origin", {
value,
writable: true,
enumerable: true,
configurable: true
});
},
get localStorage() {
if (idlUtils.implForWrapper(this._document)._origin === "null") {
throw DOMException.create(window, [
"localStorage is not available for opaque origins",
"SecurityError"
]);
}
return this._localStorage;
},
get sessionStorage() {
if (idlUtils.implForWrapper(this._document)._origin === "null") {
throw DOMException.create(window, [
"sessionStorage is not available for opaque origins",
"SecurityError"
]);
}
return this._sessionStorage;
},
get customElements() {
return customElementRegistry;
}
});
namedPropertiesWindow.initializeWindow(this, this._globalProxy);
///// METHODS
// https://html.spec.whatwg.org/multipage/timers-and-user-prompts.html#timers
// In the spec the list of active timers is a set of IDs. We make it a map of IDs to Node.js timer objects, so that
// we can call Node.js-side clearTimeout() when clearing, and thus allow process shutdown faster.
const listOfActiveTimers = new Map();
let latestTimerId = 0;
this.setTimeout = function (handler, timeout = 0, ...args) {
if (typeof handler !== "function") {
handler = webIDLConversions.DOMString(handler);
}
timeout = webIDLConversions.long(timeout);
return timerInitializationSteps(handler, timeout, args, { methodContext: window, repeat: false });
};
this.setInterval = function (handler, timeout = 0, ...args) {
if (typeof handler !== "function") {
handler = webIDLConversions.DOMString(handler);
}
timeout = webIDLConversions.long(timeout);
return timerInitializationSteps(handler, timeout, args, { methodContext: window, repeat: true });
};
this.clearTimeout = function (handle = 0) {
handle = webIDLConversions.long(handle);
const nodejsTimer = listOfActiveTimers.get(handle);
if (nodejsTimer) {
clearTimeout(nodejsTimer);
listOfActiveTimers.delete(handle);
}
};
this.clearInterval = function (handle = 0) {
handle = webIDLConversions.long(handle);
const nodejsTimer = listOfActiveTimers.get(handle);
if (nodejsTimer) {
// We use setTimeout() in timerInitializationSteps even for this.setInterval().
clearTimeout(nodejsTimer);
listOfActiveTimers.delete(handle);
}
};
function timerInitializationSteps(handler, timeout, args, { methodContext, repeat, previousHandle }) {
// This appears to be unspecced, but matches browser behavior for close()ed windows.
if (!methodContext._document) {
return 0;
}
// TODO: implement timer nesting level behavior.
const methodContextProxy = methodContext._globalProxy;
const handle = previousHandle !== undefined ? previousHandle : ++latestTimerId;
function task() {
if (!listOfActiveTimers.has(handle)) {
return;
}
try {
if (typeof handler === "function") {
handler.apply(methodContextProxy, args);
} else if (window._runScripts === "dangerously") {
vm.runInContext(handler, window, { filename: window.location.href, displayErrors: false });
}
} catch (e) {
reportException(window, e, window.location.href);
}
if (listOfActiveTimers.has(handle)) {
if (repeat) {
timerInitializationSteps(handler, timeout, args, { methodContext, repeat: true, previousHandle: handle });
} else {
listOfActiveTimers.delete(handle);
}
}
}
if (timeout < 0) {
timeout = 0;
}
const nodejsTimer = setTimeout(task, timeout);
listOfActiveTimers.set(handle, nodejsTimer);
return handle;
}
// https://html.spec.whatwg.org/multipage/imagebitmap-and-animations.html#animation-frames
let animationFrameCallbackId = 0;
const mapOfAnimationFrameCallbacks = new Map();
let animationFrameNodejsInterval = null;
// Unlike the spec, where an animation frame happens every 60 Hz regardless, we optimize so that if there are no
// requestAnimationFrame() calls outstanding, we don't fire the timer. This helps us track that.
let numberOfOngoingAnimationFrameCallbacks = 0;
if (this._pretendToBeVisual) {
this.requestAnimationFrame = function (callback) {
callback = webIDLConversions.Function(callback);
const handle = ++animationFrameCallbackId;
mapOfAnimationFrameCallbacks.set(handle, callback);
++numberOfOngoingAnimationFrameCallbacks;
if (numberOfOngoingAnimationFrameCallbacks === 1) {
animationFrameNodejsInterval = setInterval(() => {
runAnimationFrameCallbacks(rawPerformance.now() - windowInitialized);
}, 1000 / 60);
}
return handle;
};
this.cancelAnimationFrame = function (handle) {
handle = webIDLConversions["unsigned long"](handle);
removeAnimationFrameCallback(handle);
};
function runAnimationFrameCallbacks(now) {
// Converting to an array is important to get a sync snapshot and thus match spec semantics.
const callbackHandles = [...mapOfAnimationFrameCallbacks.keys()];
for (const handle of callbackHandles) {
// This has() can be false if a callback calls cancelAnimationFrame().
if (mapOfAnimationFrameCallbacks.has(handle)) {
const callback = mapOfAnimationFrameCallbacks.get(handle);
removeAnimationFrameCallback(handle);
try {
callback(now);
} catch (e) {
reportException(window, e, window.location.href);
}
}
}
}
function removeAnimationFrameCallback(handle) {
if (mapOfAnimationFrameCallbacks.has(handle)) {
--numberOfOngoingAnimationFrameCallbacks;
if (numberOfOngoingAnimationFrameCallbacks === 0) {
clearInterval(animationFrameNodejsInterval);
}
}
mapOfAnimationFrameCallbacks.delete(handle);
}
}
function stopAllTimers() {
for (const nodejsTimer of listOfActiveTimers.values()) {
clearTimeout(nodejsTimer);
}
listOfActiveTimers.clear();
clearInterval(animationFrameNodejsInterval);
}
function Option(text, value, defaultSelected, selected) {
if (text === undefined) {
text = "";
}
text = webIDLConversions.DOMString(text);
if (value !== undefined) {
value = webIDLConversions.DOMString(value);
}
defaultSelected = webIDLConversions.boolean(defaultSelected);
selected = webIDLConversions.boolean(selected);
const option = window._document.createElement("option");
const impl = idlUtils.implForWrapper(option);
if (text !== "") {
impl.text = text;
}
if (value !== undefined) {
impl.setAttributeNS(null, "value", value);
}
if (defaultSelected) {
impl.setAttributeNS(null, "selected", "");
}
impl._selectedness = selected;
return option;
}
Object.defineProperty(Option, "prototype", {
value: this.HTMLOptionElement.prototype,
configurable: false,
enumerable: false,
writable: false
});
Object.defineProperty(window, "Option", {
value: Option,
configurable: true,
enumerable: false,
writable: true
});
function Image() {
const img = window._document.createElement("img");
const impl = idlUtils.implForWrapper(img);
if (arguments.length > 0) {
impl.setAttributeNS(null, "width", String(arguments[0]));
}
if (arguments.length > 1) {
impl.setAttributeNS(null, "height", String(arguments[1]));
}
return img;
}
Object.defineProperty(Image, "prototype", {
value: this.HTMLImageElement.prototype,
configurable: false,
enumerable: false,
writable: false
});
Object.defineProperty(window, "Image", {
value: Image,
configurable: true,
enumerable: false,
writable: true
});
function Audio(src) {
const audio = window._document.createElement("audio");
const impl = idlUtils.implForWrapper(audio);
impl.setAttributeNS(null, "preload", "auto");
if (src !== undefined) {
impl.setAttributeNS(null, "src", String(src));
}
return audio;
}
Object.defineProperty(Audio, "prototype", {
value: this.HTMLAudioElement.prototype,
configurable: false,
enumerable: false,
writable: false
});
Object.defineProperty(window, "Audio", {
value: Audio,
configurable: true,
enumerable: false,
writable: true
});
this.postMessage = postMessage(window);
this.atob = function (str) {
const result = atob(str);
if (result === null) {
throw DOMException.create(window, [
"The string to be decoded contains invalid characters.",
"InvalidCharacterError"
]);
}
return result;
};
this.btoa = function (str) {
const result = btoa(str);
if (result === null) {
throw DOMException.create(window, [
"The string to be encoded contains invalid characters.",
"InvalidCharacterError"
]);
}
return result;
};
this.stop = function () {
const manager = idlUtils.implForWrapper(this._document)._requestManager;
if (manager) {
manager.close();
}
};
this.close = function () {
// Recursively close child frame windows, then ourselves (depth-first).
for (let i = 0; i < this.length; ++i) {
this[i].close();
}
// Clear out all listeners. Any in-flight or upcoming events should not get delivered.
idlUtils.implForWrapper(this)._eventListeners = Object.create(null);
if (this._document) {
if (this._document.body) {
this._document.body.innerHTML = "";
}
if (this._document.close) {
// It's especially important to clear out the listeners here because document.close() causes a "load" event to
// fire.
idlUtils.implForWrapper(this._document)._eventListeners = Object.create(null);
this._document.close();
}
const doc = idlUtils.implForWrapper(this._document);
if (doc._requestManager) {
doc._requestManager.close();
}
delete this._document;
}
stopAllTimers();
WebSocketImpl.cleanUpWindow(this);
};
this.getComputedStyle = function (elt) {
elt = Element.convert(elt);
const declaration = new CSSStyleDeclaration();
const { forEach } = Array.prototype;
const { style } = elt;
forEachMatchingSheetRuleOfElement(elt, rule => {
forEach.call(rule.style, property => {
declaration.setProperty(
property,
rule.style.getPropertyValue(property),
rule.style.getPropertyPriority(property)
);
});
});
// https://drafts.csswg.org/cssom/#dom-window-getcomputedstyle
const declarations = Object.keys(propertiesWithResolvedValueImplemented);
forEach.call(declarations, property => {
declaration.setProperty(property, getResolvedValue(elt, property));
});
forEach.call(style, property => {
declaration.setProperty(property, style.getPropertyValue(property), style.getPropertyPriority(property));
});
return declaration;
};
this.getSelection = function () {
return window._document.getSelection();
};
// The captureEvents() and releaseEvents() methods must do nothing
this.captureEvents = function () {};
this.releaseEvents = function () {};
///// PUBLIC DATA PROPERTIES (TODO: should be getters)
function wrapConsoleMethod(method) {
return (...args) => {
window._virtualConsole.emit(method, ...args);
};
}
this.console = {
assert: wrapConsoleMethod("assert"),
clear: wrapConsoleMethod("clear"),
count: wrapConsoleMethod("count"),
countReset: wrapConsoleMethod("countReset"),
debug: wrapConsoleMethod("debug"),
dir: wrapConsoleMethod("dir"),
dirxml: wrapConsoleMethod("dirxml"),
error: wrapConsoleMethod("error"),
group: wrapConsoleMethod("group"),
groupCollapsed: wrapConsoleMethod("groupCollapsed"),
groupEnd: wrapConsoleMethod("groupEnd"),
info: wrapConsoleMethod("info"),
log: wrapConsoleMethod("log"),
table: wrapConsoleMethod("table"),
time: wrapConsoleMethod("time"),
timeLog: wrapConsoleMethod("timeLog"),
timeEnd: wrapConsoleMethod("timeEnd"),
trace: wrapConsoleMethod("trace"),
warn: wrapConsoleMethod("warn")
};
function notImplementedMethod(name) {
return function () {
notImplemented(name, window);
};
}
define(this, {
name: "",
status: "",
devicePixelRatio: 1,
innerWidth: 1024,
innerHeight: 768,
outerWidth: 1024,
outerHeight: 768,
pageXOffset: 0,
pageYOffset: 0,
screenX: 0,
screenLeft: 0,
screenY: 0,
screenTop: 0,
scrollX: 0,
scrollY: 0,
alert: notImplementedMethod("window.alert"),
blur: notImplementedMethod("window.blur"),
confirm: notImplementedMethod("window.confirm"),
focus: notImplementedMethod("window.focus"),
moveBy: notImplementedMethod("window.moveBy"),
moveTo: notImplementedMethod("window.moveTo"),
open: notImplementedMethod("window.open"),
print: notImplementedMethod("window.print"),
prompt: notImplementedMethod("window.prompt"),
resizeBy: notImplementedMethod("window.resizeBy"),
resizeTo: notImplementedMethod("window.resizeTo"),
scroll: notImplementedMethod("window.scroll"),
scrollBy: notImplementedMethod("window.scrollBy"),
scrollTo: notImplementedMethod("window.scrollTo")
});
///// INITIALIZATION
process.nextTick(() => {
if (!window.document) {
return; // window might've been closed already
}
if (window.document.readyState === "complete") {
fireAnEvent("load", window, undefined, {}, window.document);
} else {
window.document.addEventListener("load", () => {
fireAnEvent("load", window, undefined, {}, window.document);
if (!idlUtils.implForWrapper(window._document)._pageShowingFlag) {
idlUtils.implForWrapper(window._document)._pageShowingFlag = true;
fireAnEvent("pageshow", window, PageTransitionEvent, { persisted: false }, window.document);
}
});
}
});
}
function contextifyWindow(window) {
if (vm.isContext(window)) {
return;
}
vm.createContext(window);
}