/
Window.js
702 lines (606 loc) · 21.3 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 { 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 cssom = require("cssom");
const postMessage = require("../living/post-message");
const DOMException = require("domexception");
const { btoa, atob } = require("abab");
const idlUtils = require("../living/generated/utils");
const createXMLHttpRequest = require("../living/xmlhttprequest");
const createFileReader = require("../living/generated/FileReader").createInterface;
const createWebSocket = require("../living/generated/WebSocket").createInterface;
const WebSocketImpl = require("../living/websockets/WebSocket-impl").implementation;
const BarProp = require("../living/generated/BarProp");
const Document = require("../living/generated/Document");
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 createAbortController = require("../living/generated/AbortController").createInterface;
const createAbortSignal = require("../living/generated/AbortSignal").createInterface;
const reportException = require("../living/helpers/runtime-script-errors");
const { matchesDontThrow } = require("../living/helpers/selectors");
const { fireAnEvent } = require("../living/helpers/events");
const SessionHistory = require("../living/window/SessionHistory");
const CustomElementRegistry = require("../living/generated/CustomElementRegistry");
const GlobalEventHandlersImpl = require("../living/nodes/GlobalEventHandlers-impl").implementation;
const WindowEventHandlersImpl = require("../living/nodes/WindowEventHandlers-impl").implementation;
const defaultStyleSheet = require("./default-stylesheet");
let parsedDefaultStyleSheet;
// NB: the require() must be after assigning `module.exports` because this require() is circular
// TODO: this above note might not even be true anymore... figure out the cycle and document it, or clean up.
module.exports = Window;
const { installInterfaces } = require("../living/interfaces");
// 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) {
EventTarget.setup(this);
const rawPerformance = new RawPerformance();
const windowInitialized = rawPerformance.now();
const window = this;
mixin(window, WindowEventHandlersImpl.prototype);
mixin(window, GlobalEventHandlersImpl.prototype);
this._initGlobalEvents();
window.Window = Window;
installInterfaces(window);
///// 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 });
let timers = Object.create(null);
let animationFrameCallbacks = Object.create(null);
// List options explicitly to be clear which are passed through
this._document = Document.create([], {
options: {
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
}
});
// 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;
if (this._runScripts === "outside-only" || this._runScripts === "dangerously") {
contextifyWindow(this);
}
// 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[this._document.origin]) {
this._commonForOrigin = options.commonForOrigin;
} else {
this._commonForOrigin = {
[this._document.origin]: {
localStorageArea: new Map(),
sessionStorageArea: new Map(),
windowsInSameOrigin: [this]
}
};
}
this._currentOriginData = this._commonForOrigin[this._document.origin];
///// WEB STORAGE
this._localStorage = Storage.create([], {
associatedWindow: this,
storageArea: this._currentOriginData.localStorageArea,
type: "localStorage",
url: this._document.documentURI,
storageQuota: this._storageQuota
});
this._sessionStorage = Storage.create([], {
associatedWindow: this,
storageArea: this._currentOriginData.sessionStorageArea,
type: "sessionStorage",
url: this._document.documentURI,
storageQuota: this._storageQuota
});
///// GETTERS
const locationbar = BarProp.create();
const menubar = BarProp.create();
const personalbar = BarProp.create();
const scrollbars = BarProp.create();
const statusbar = BarProp.create();
const toolbar = BarProp.create();
const external = External.create();
const navigator = Navigator.create([], { userAgent: this._resourceLoader._userAgent });
const performance = Performance.create([], { rawPerformance });
const screen = Screen.create();
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 localStorage() {
if (this._document.origin === "null") {
throw new DOMException("localStorage is not available for opaque origins", "SecurityError");
}
return this._localStorage;
},
get sessionStorage() {
if (this._document.origin === "null") {
throw new DOMException("sessionStorage is not available for opaque origins", "SecurityError");
}
return this._sessionStorage;
}
});
namedPropertiesWindow.initializeWindow(this, this._globalProxy);
///// METHODS for [ImplicitThis] hack
// See https://lists.w3.org/Archives/Public/public-script-coord/2015JanMar/0109.html
this.addEventListener = this.addEventListener.bind(this);
this.removeEventListener = this.removeEventListener.bind(this);
this.dispatchEvent = this.dispatchEvent.bind(this);
///// METHODS
let latestTimerId = 0;
let latestAnimationFrameCallbackId = 0;
this.setTimeout = function (fn, ms) {
const args = [];
for (let i = 2; i < arguments.length; ++i) {
args[i - 2] = arguments[i];
}
return startTimer(window, setTimeout, clearTimeout, ++latestTimerId, fn, ms, timers, args);
};
this.setInterval = function (fn, ms) {
const args = [];
for (let i = 2; i < arguments.length; ++i) {
args[i - 2] = arguments[i];
}
return startTimer(window, setInterval, clearInterval, ++latestTimerId, fn, ms, timers, args);
};
this.clearInterval = stopTimer.bind(this, timers);
this.clearTimeout = stopTimer.bind(this, timers);
if (this._pretendToBeVisual) {
this.requestAnimationFrame = fn => {
const timestamp = rawPerformance.now() - windowInitialized;
const fps = 1000 / 60;
return startTimer(
window,
setTimeout,
clearTimeout,
++latestAnimationFrameCallbackId,
fn,
fps,
animationFrameCallbacks,
[timestamp]
);
};
this.cancelAnimationFrame = stopTimer.bind(this, animationFrameCallbacks);
}
this.__stopAllTimers = function () {
stopAllTimers(timers);
stopAllTimers(animationFrameCallbacks);
latestTimerId = 0;
latestAnimationFrameCallbackId = 0;
timers = Object.create(null);
animationFrameCallbacks = Object.create(null);
};
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;
this.atob = function (str) {
const result = atob(str);
if (result === null) {
throw new DOMException("The string to be decoded contains invalid characters.", "InvalidCharacterError");
}
return result;
};
this.btoa = function (str) {
const result = btoa(str);
if (result === null) {
throw new DOMException("The string to be encoded contains invalid characters.", "InvalidCharacterError");
}
return result;
};
this.FileReader = createFileReader({
window: this
}).interface;
this.WebSocket = createWebSocket({
window: this
}).interface;
const AbortSignalWrapper = createAbortSignal({
window: this
});
this.AbortSignal = AbortSignalWrapper.interface;
this.AbortController = createAbortController({
AbortSignal: AbortSignalWrapper
}).interface;
this.XMLHttpRequest = createXMLHttpRequest(this);
// TODO: necessary for Blob and FileReader due to different-globals weirdness; investigate how to avoid this.
this.ArrayBuffer = ArrayBuffer;
this.Int8Array = Int8Array;
this.Uint8Array = Uint8Array;
this.Uint8ClampedArray = Uint8ClampedArray;
this.Int16Array = Int16Array;
this.Uint16Array = Uint16Array;
this.Int32Array = Int32Array;
this.Uint32Array = Uint32Array;
this.Float32Array = Float32Array;
this.Float64Array = Float64Array;
this.stop = function () {
const manager = idlUtils.implForWrapper(this._document)._requestManager;
if (manager) {
manager.close();
}
};
this.close = function () {
// Recursively close child frame windows, then ourselves.
const currentWindow = this;
(function windowCleaner(windowToClean) {
for (let i = 0; i < windowToClean.length; i++) {
windowCleaner(windowToClean[i]);
}
// We"re already in our own window.close().
if (windowToClean !== currentWindow) {
windowToClean.close();
}
}(this));
// 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;
}
this.__stopAllTimers();
WebSocketImpl.cleanUpWindow(this);
};
this.getComputedStyle = function (elt) {
elt = Element.convert(elt);
const declaration = new CSSStyleDeclaration();
const { forEach, indexOf } = Array.prototype;
const { style } = elt;
function setPropertiesFromRule(rule) {
if (!rule.selectorText) {
return;
}
const cssSelectorSplitRe = /((?:[^,"']|"[^"]*"|'[^']*')+)/;
const selectors = rule.selectorText.split(cssSelectorSplitRe);
let matched = false;
for (const selectorText of selectors) {
if (selectorText !== "" && selectorText !== "," && !matched && matchesDontThrow(elt, selectorText)) {
matched = true;
forEach.call(rule.style, property => {
declaration.setProperty(
property,
rule.style.getPropertyValue(property),
rule.style.getPropertyPriority(property)
);
});
}
}
}
function readStylesFromStyleSheet(sheet) {
forEach.call(sheet.cssRules, rule => {
if (rule.media) {
if (indexOf.call(rule.media, "screen") !== -1) {
forEach.call(rule.cssRules, setPropertiesFromRule);
}
} else {
setPropertiesFromRule(rule);
}
});
}
if (!parsedDefaultStyleSheet) {
parsedDefaultStyleSheet = cssom.parse(defaultStyleSheet);
}
readStylesFromStyleSheet(parsedDefaultStyleSheet);
forEach.call(elt.ownerDocument.styleSheets, readStylesFromStyleSheet);
forEach.call(style, property => {
declaration.setProperty(property, style.getPropertyValue(property), style.getPropertyPriority(property));
});
return declaration;
};
this.customElements = CustomElementRegistry.create([], {
_ownerDocument: idlUtils.implForWrapper(this._document)
});
// 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"),
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);
}
});
}
});
}
Object.setPrototypeOf(Window, EventTarget.interface);
Object.setPrototypeOf(Window.prototype, EventTarget.interface.prototype);
Object.defineProperty(Window.prototype, Symbol.toStringTag, {
value: "Window",
writable: false,
enumerable: false,
configurable: true
});
function startTimer(window, startFn, stopFn, timerId, callback, ms, timerStorage, args) {
if (!window || !window._document) {
return undefined;
}
if (typeof callback !== "function") {
const code = String(callback);
callback = window._globalProxy.eval.bind(window, code + `\n//# sourceURL=${window.location.href}`);
}
const oldCallback = callback;
callback = () => {
try {
oldCallback.apply(window._globalProxy, args);
} catch (e) {
reportException(window, e, window.location.href);
}
};
const res = startFn(callback, ms);
timerStorage[timerId] = [res, stopFn];
return timerId;
}
function stopTimer(timerStorage, id) {
const timer = timerStorage[id];
if (timer) {
// Need to .call() with undefined to ensure the thisArg is not timer itself
timer[1].call(undefined, timer[0]);
delete timerStorage[id];
}
}
function stopAllTimers(timers) {
Object.keys(timers).forEach(key => {
const timer = timers[key];
// Need to .call() with undefined to ensure the thisArg is not timer itself
timer[1].call(undefined, timer[0]);
});
}
function contextifyWindow(window) {
if (vm.isContext(window)) {
return;
}
vm.createContext(window);
const documentImpl = idlUtils.implForWrapper(window._document);
documentImpl._defaultView = window._globalProxy = vm.runInContext("this", window);
}