mirror of
https://github.com/denoland/deno.git
synced 2024-12-27 17:49:08 -05:00
f9b692e68e
This reverts commit 1a7259b04b
.
1444 lines
36 KiB
JavaScript
1444 lines
36 KiB
JavaScript
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
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// This module follows most of the WHATWG Living Standard for the DOM logic.
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// Many parts of the DOM are not implemented in Deno, but the logic for those
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// parts still exists. This means you will observe a lot of strange structures
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// and impossible logic branches based on what Deno currently supports.
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"use strict";
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((window) => {
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const core = window.Deno.core;
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const webidl = window.__bootstrap.webidl;
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const { DOMException } = window.__bootstrap.domException;
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const consoleInternal = window.__bootstrap.console;
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const {
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ArrayPrototypeFilter,
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ArrayPrototypeIncludes,
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ArrayPrototypeIndexOf,
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ArrayPrototypeMap,
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ArrayPrototypePush,
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ArrayPrototypeSlice,
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ArrayPrototypeSplice,
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ArrayPrototypeUnshift,
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Boolean,
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DateNow,
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Error,
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FunctionPrototypeCall,
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Map,
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MapPrototypeGet,
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MapPrototypeSet,
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ObjectCreate,
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ObjectDefineProperty,
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ObjectGetOwnPropertyDescriptor,
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ObjectPrototypeIsPrototypeOf,
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ReflectDefineProperty,
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ReflectHas,
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SafeArrayIterator,
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StringPrototypeStartsWith,
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Symbol,
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SymbolFor,
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SymbolToStringTag,
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TypeError,
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} = window.__bootstrap.primordials;
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// accessors for non runtime visible data
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function getDispatched(event) {
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return Boolean(event[_dispatched]);
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}
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function getPath(event) {
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return event[_path] ?? [];
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}
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function getStopImmediatePropagation(event) {
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return Boolean(event[_stopImmediatePropagationFlag]);
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}
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function setCurrentTarget(
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event,
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value,
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) {
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event[_attributes].currentTarget = value;
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}
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function setIsTrusted(event, value) {
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event[_isTrusted] = value;
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}
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function setDispatched(event, value) {
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event[_dispatched] = value;
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}
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function setEventPhase(event, value) {
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event[_attributes].eventPhase = value;
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}
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function setInPassiveListener(event, value) {
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event[_inPassiveListener] = value;
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}
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function setPath(event, value) {
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event[_path] = value;
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}
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function setRelatedTarget(
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event,
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value,
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) {
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event[_attributes].relatedTarget = value;
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}
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function setTarget(event, value) {
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event[_attributes].target = value;
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}
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function setStopImmediatePropagation(
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event,
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value,
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) {
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event[_stopImmediatePropagationFlag] = value;
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}
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// Type guards that widen the event type
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function hasRelatedTarget(
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event,
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) {
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return ReflectHas(event, "relatedTarget");
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}
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const isTrusted = ObjectGetOwnPropertyDescriptor({
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get isTrusted() {
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return this[_isTrusted];
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},
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}, "isTrusted").get;
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const eventInitConverter = webidl.createDictionaryConverter("EventInit", [{
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key: "bubbles",
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defaultValue: false,
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converter: webidl.converters.boolean,
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}, {
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key: "cancelable",
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defaultValue: false,
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converter: webidl.converters.boolean,
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}, {
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key: "composed",
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defaultValue: false,
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converter: webidl.converters.boolean,
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}]);
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const _attributes = Symbol("[[attributes]]");
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const _canceledFlag = Symbol("[[canceledFlag]]");
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const _stopPropagationFlag = Symbol("[[stopPropagationFlag]]");
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const _stopImmediatePropagationFlag = Symbol(
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"[[stopImmediatePropagationFlag]]",
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);
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const _inPassiveListener = Symbol("[[inPassiveListener]]");
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const _dispatched = Symbol("[[dispatched]]");
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const _isTrusted = Symbol("[[isTrusted]]");
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const _path = Symbol("[[path]]");
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class Event {
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constructor(type, eventInitDict = {}) {
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// TODO(lucacasonato): remove when this interface is spec aligned
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this[SymbolToStringTag] = "Event";
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this[_canceledFlag] = false;
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this[_stopPropagationFlag] = false;
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this[_stopImmediatePropagationFlag] = false;
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this[_inPassiveListener] = false;
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this[_dispatched] = false;
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this[_isTrusted] = false;
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this[_path] = [];
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webidl.requiredArguments(arguments.length, 1, {
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prefix: "Failed to construct 'Event'",
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});
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type = webidl.converters.DOMString(type, {
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prefix: "Failed to construct 'Event'",
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context: "Argument 1",
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});
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const eventInit = eventInitConverter(eventInitDict, {
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prefix: "Failed to construct 'Event'",
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context: "Argument 2",
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});
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this[_attributes] = {
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type,
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...eventInit,
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currentTarget: null,
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eventPhase: Event.NONE,
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target: null,
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timeStamp: DateNow(),
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};
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ReflectDefineProperty(this, "isTrusted", {
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enumerable: true,
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get: isTrusted,
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});
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}
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[SymbolFor("Deno.privateCustomInspect")](inspect) {
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return inspect(consoleInternal.createFilteredInspectProxy({
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object: this,
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evaluate: ObjectPrototypeIsPrototypeOf(Event.prototype, this),
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keys: EVENT_PROPS,
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}));
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}
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get type() {
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return this[_attributes].type;
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}
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get target() {
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return this[_attributes].target;
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}
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get srcElement() {
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return null;
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}
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set srcElement(_) {
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// this member is deprecated
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}
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get currentTarget() {
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return this[_attributes].currentTarget;
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}
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composedPath() {
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const path = this[_path];
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if (path.length === 0) {
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return [];
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}
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if (!this.currentTarget) {
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throw new Error("assertion error");
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}
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const composedPath = [
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{
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item: this.currentTarget,
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itemInShadowTree: false,
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relatedTarget: null,
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rootOfClosedTree: false,
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slotInClosedTree: false,
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target: null,
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touchTargetList: [],
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},
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];
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let currentTargetIndex = 0;
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let currentTargetHiddenSubtreeLevel = 0;
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for (let index = path.length - 1; index >= 0; index--) {
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const { item, rootOfClosedTree, slotInClosedTree } = path[index];
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if (rootOfClosedTree) {
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currentTargetHiddenSubtreeLevel++;
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}
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if (item === this.currentTarget) {
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currentTargetIndex = index;
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break;
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}
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if (slotInClosedTree) {
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currentTargetHiddenSubtreeLevel--;
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}
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}
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let currentHiddenLevel = currentTargetHiddenSubtreeLevel;
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let maxHiddenLevel = currentTargetHiddenSubtreeLevel;
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for (let i = currentTargetIndex - 1; i >= 0; i--) {
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const { item, rootOfClosedTree, slotInClosedTree } = path[i];
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if (rootOfClosedTree) {
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currentHiddenLevel++;
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}
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if (currentHiddenLevel <= maxHiddenLevel) {
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ArrayPrototypeUnshift(composedPath, {
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item,
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itemInShadowTree: false,
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relatedTarget: null,
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rootOfClosedTree: false,
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slotInClosedTree: false,
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target: null,
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touchTargetList: [],
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});
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}
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if (slotInClosedTree) {
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currentHiddenLevel--;
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if (currentHiddenLevel < maxHiddenLevel) {
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maxHiddenLevel = currentHiddenLevel;
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}
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}
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}
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currentHiddenLevel = currentTargetHiddenSubtreeLevel;
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maxHiddenLevel = currentTargetHiddenSubtreeLevel;
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for (let index = currentTargetIndex + 1; index < path.length; index++) {
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const { item, rootOfClosedTree, slotInClosedTree } = path[index];
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if (slotInClosedTree) {
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currentHiddenLevel++;
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}
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if (currentHiddenLevel <= maxHiddenLevel) {
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ArrayPrototypePush(composedPath, {
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item,
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itemInShadowTree: false,
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relatedTarget: null,
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rootOfClosedTree: false,
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slotInClosedTree: false,
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target: null,
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touchTargetList: [],
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});
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}
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if (rootOfClosedTree) {
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currentHiddenLevel--;
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if (currentHiddenLevel < maxHiddenLevel) {
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maxHiddenLevel = currentHiddenLevel;
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}
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}
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}
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return ArrayPrototypeMap(composedPath, (p) => p.item);
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}
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get NONE() {
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return Event.NONE;
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}
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get CAPTURING_PHASE() {
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return Event.CAPTURING_PHASE;
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}
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get AT_TARGET() {
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return Event.AT_TARGET;
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}
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get BUBBLING_PHASE() {
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return Event.BUBBLING_PHASE;
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}
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static get NONE() {
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return 0;
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}
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static get CAPTURING_PHASE() {
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return 1;
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}
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static get AT_TARGET() {
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return 2;
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}
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static get BUBBLING_PHASE() {
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return 3;
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}
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get eventPhase() {
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return this[_attributes].eventPhase;
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}
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stopPropagation() {
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this[_stopPropagationFlag] = true;
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}
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get cancelBubble() {
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return this[_stopPropagationFlag];
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}
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set cancelBubble(value) {
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this[_stopPropagationFlag] = webidl.converters.boolean(value);
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}
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stopImmediatePropagation() {
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this[_stopPropagationFlag] = true;
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this[_stopImmediatePropagationFlag] = true;
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}
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get bubbles() {
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return this[_attributes].bubbles;
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}
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get cancelable() {
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return this[_attributes].cancelable;
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}
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get returnValue() {
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return !this[_canceledFlag];
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}
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set returnValue(value) {
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if (!webidl.converters.boolean(value)) {
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this[_canceledFlag] = true;
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}
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}
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preventDefault() {
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if (this[_attributes].cancelable && !this[_inPassiveListener]) {
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this[_canceledFlag] = true;
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}
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}
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get defaultPrevented() {
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return this[_canceledFlag];
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}
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get composed() {
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return this[_attributes].composed;
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}
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get initialized() {
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return true;
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}
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get timeStamp() {
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return this[_attributes].timeStamp;
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}
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}
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function defineEnumerableProps(
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Ctor,
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props,
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) {
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for (const prop of props) {
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ReflectDefineProperty(Ctor.prototype, prop, { enumerable: true });
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}
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}
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const EVENT_PROPS = [
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"bubbles",
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"cancelable",
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"composed",
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"currentTarget",
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"defaultPrevented",
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"eventPhase",
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"srcElement",
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"target",
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"returnValue",
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"timeStamp",
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"type",
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];
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defineEnumerableProps(Event, EVENT_PROPS);
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// This is currently the only node type we are using, so instead of implementing
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// the whole of the Node interface at the moment, this just gives us the one
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// value to power the standards based logic
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const DOCUMENT_FRAGMENT_NODE = 11;
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// DOM Logic Helper functions and type guards
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/** Get the parent node, for event targets that have a parent.
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*
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* Ref: https://dom.spec.whatwg.org/#get-the-parent */
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function getParent(eventTarget) {
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return isNode(eventTarget) ? eventTarget.parentNode : null;
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}
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function getRoot(eventTarget) {
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return isNode(eventTarget)
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? eventTarget.getRootNode({ composed: true })
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: null;
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}
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function isNode(
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eventTarget,
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) {
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return Boolean(eventTarget && ReflectHas(eventTarget, "nodeType"));
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}
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// https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-ancestor
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function isShadowInclusiveAncestor(
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ancestor,
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node,
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) {
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while (isNode(node)) {
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if (node === ancestor) {
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return true;
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}
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if (isShadowRoot(node)) {
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node = node && getHost(node);
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} else {
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node = getParent(node);
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}
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}
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return false;
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}
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function isShadowRoot(nodeImpl) {
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return Boolean(
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nodeImpl &&
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isNode(nodeImpl) &&
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nodeImpl.nodeType === DOCUMENT_FRAGMENT_NODE &&
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getHost(nodeImpl) != null,
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);
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}
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function isSlotable(
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nodeImpl,
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) {
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return Boolean(isNode(nodeImpl) && ReflectHas(nodeImpl, "assignedSlot"));
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}
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|
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// DOM Logic functions
|
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/** Append a path item to an event's path.
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*
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* Ref: https://dom.spec.whatwg.org/#concept-event-path-append
|
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*/
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function appendToEventPath(
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eventImpl,
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target,
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targetOverride,
|
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relatedTarget,
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touchTargets,
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slotInClosedTree,
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) {
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const itemInShadowTree = isNode(target) && isShadowRoot(getRoot(target));
|
||
const rootOfClosedTree = isShadowRoot(target) &&
|
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getMode(target) === "closed";
|
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|
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ArrayPrototypePush(getPath(eventImpl), {
|
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item: target,
|
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itemInShadowTree,
|
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target: targetOverride,
|
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relatedTarget,
|
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touchTargetList: touchTargets,
|
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rootOfClosedTree,
|
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slotInClosedTree,
|
||
});
|
||
}
|
||
|
||
function dispatch(
|
||
targetImpl,
|
||
eventImpl,
|
||
targetOverride,
|
||
) {
|
||
let clearTargets = false;
|
||
let activationTarget = null;
|
||
|
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setDispatched(eventImpl, true);
|
||
|
||
targetOverride = targetOverride ?? targetImpl;
|
||
const eventRelatedTarget = hasRelatedTarget(eventImpl)
|
||
? eventImpl.relatedTarget
|
||
: null;
|
||
let relatedTarget = retarget(eventRelatedTarget, targetImpl);
|
||
|
||
if (targetImpl !== relatedTarget || targetImpl === eventRelatedTarget) {
|
||
const touchTargets = [];
|
||
|
||
appendToEventPath(
|
||
eventImpl,
|
||
targetImpl,
|
||
targetOverride,
|
||
relatedTarget,
|
||
touchTargets,
|
||
false,
|
||
);
|
||
|
||
const isActivationEvent = eventImpl.type === "click";
|
||
|
||
if (isActivationEvent && getHasActivationBehavior(targetImpl)) {
|
||
activationTarget = targetImpl;
|
||
}
|
||
|
||
let slotInClosedTree = false;
|
||
let slotable = isSlotable(targetImpl) && getAssignedSlot(targetImpl)
|
||
? targetImpl
|
||
: null;
|
||
let parent = getParent(targetImpl);
|
||
|
||
// Populate event path
|
||
// https://dom.spec.whatwg.org/#event-path
|
||
while (parent !== null) {
|
||
if (slotable !== null) {
|
||
slotable = null;
|
||
|
||
const parentRoot = getRoot(parent);
|
||
if (
|
||
isShadowRoot(parentRoot) &&
|
||
parentRoot &&
|
||
getMode(parentRoot) === "closed"
|
||
) {
|
||
slotInClosedTree = true;
|
||
}
|
||
}
|
||
|
||
relatedTarget = retarget(eventRelatedTarget, parent);
|
||
|
||
if (
|
||
isNode(parent) &&
|
||
isShadowInclusiveAncestor(getRoot(targetImpl), parent)
|
||
) {
|
||
appendToEventPath(
|
||
eventImpl,
|
||
parent,
|
||
null,
|
||
relatedTarget,
|
||
touchTargets,
|
||
slotInClosedTree,
|
||
);
|
||
} else if (parent === relatedTarget) {
|
||
parent = null;
|
||
} else {
|
||
targetImpl = parent;
|
||
|
||
if (
|
||
isActivationEvent &&
|
||
activationTarget === null &&
|
||
getHasActivationBehavior(targetImpl)
|
||
) {
|
||
activationTarget = targetImpl;
|
||
}
|
||
|
||
appendToEventPath(
|
||
eventImpl,
|
||
parent,
|
||
targetImpl,
|
||
relatedTarget,
|
||
touchTargets,
|
||
slotInClosedTree,
|
||
);
|
||
}
|
||
|
||
if (parent !== null) {
|
||
parent = getParent(parent);
|
||
}
|
||
|
||
slotInClosedTree = false;
|
||
}
|
||
|
||
let clearTargetsTupleIndex = -1;
|
||
const path = getPath(eventImpl);
|
||
for (
|
||
let i = path.length - 1;
|
||
i >= 0 && clearTargetsTupleIndex === -1;
|
||
i--
|
||
) {
|
||
if (path[i].target !== null) {
|
||
clearTargetsTupleIndex = i;
|
||
}
|
||
}
|
||
const clearTargetsTuple = path[clearTargetsTupleIndex];
|
||
|
||
clearTargets = (isNode(clearTargetsTuple.target) &&
|
||
isShadowRoot(getRoot(clearTargetsTuple.target))) ||
|
||
(isNode(clearTargetsTuple.relatedTarget) &&
|
||
isShadowRoot(getRoot(clearTargetsTuple.relatedTarget)));
|
||
|
||
setEventPhase(eventImpl, Event.CAPTURING_PHASE);
|
||
|
||
for (let i = path.length - 1; i >= 0; --i) {
|
||
const tuple = path[i];
|
||
|
||
if (tuple.target === null) {
|
||
invokeEventListeners(tuple, eventImpl);
|
||
}
|
||
}
|
||
|
||
for (let i = 0; i < path.length; i++) {
|
||
const tuple = path[i];
|
||
|
||
if (tuple.target !== null) {
|
||
setEventPhase(eventImpl, Event.AT_TARGET);
|
||
} else {
|
||
setEventPhase(eventImpl, Event.BUBBLING_PHASE);
|
||
}
|
||
|
||
if (
|
||
(eventImpl.eventPhase === Event.BUBBLING_PHASE &&
|
||
eventImpl.bubbles) ||
|
||
eventImpl.eventPhase === Event.AT_TARGET
|
||
) {
|
||
invokeEventListeners(tuple, eventImpl);
|
||
}
|
||
}
|
||
}
|
||
|
||
setEventPhase(eventImpl, Event.NONE);
|
||
setCurrentTarget(eventImpl, null);
|
||
setPath(eventImpl, []);
|
||
setDispatched(eventImpl, false);
|
||
eventImpl.cancelBubble = false;
|
||
setStopImmediatePropagation(eventImpl, false);
|
||
|
||
if (clearTargets) {
|
||
setTarget(eventImpl, null);
|
||
setRelatedTarget(eventImpl, null);
|
||
}
|
||
|
||
// TODO(bartlomieju): invoke activation targets if HTML nodes will be implemented
|
||
// if (activationTarget !== null) {
|
||
// if (!eventImpl.defaultPrevented) {
|
||
// activationTarget._activationBehavior();
|
||
// }
|
||
// }
|
||
|
||
return !eventImpl.defaultPrevented;
|
||
}
|
||
|
||
/** Inner invoking of the event listeners where the resolved listeners are
|
||
* called.
|
||
*
|
||
* Ref: https://dom.spec.whatwg.org/#concept-event-listener-inner-invoke */
|
||
function innerInvokeEventListeners(
|
||
eventImpl,
|
||
targetListeners,
|
||
) {
|
||
let found = false;
|
||
|
||
const { type } = eventImpl;
|
||
|
||
if (!targetListeners || !targetListeners[type]) {
|
||
return found;
|
||
}
|
||
|
||
// Copy event listeners before iterating since the list can be modified during the iteration.
|
||
const handlers = ArrayPrototypeSlice(targetListeners[type]);
|
||
|
||
for (let i = 0; i < handlers.length; i++) {
|
||
const listener = handlers[i];
|
||
|
||
let capture, once, passive;
|
||
if (typeof listener.options === "boolean") {
|
||
capture = listener.options;
|
||
once = false;
|
||
passive = false;
|
||
} else {
|
||
capture = listener.options.capture;
|
||
once = listener.options.once;
|
||
passive = listener.options.passive;
|
||
}
|
||
|
||
// Check if the event listener has been removed since the listeners has been cloned.
|
||
if (!ArrayPrototypeIncludes(targetListeners[type], listener)) {
|
||
continue;
|
||
}
|
||
|
||
found = true;
|
||
|
||
if (
|
||
(eventImpl.eventPhase === Event.CAPTURING_PHASE && !capture) ||
|
||
(eventImpl.eventPhase === Event.BUBBLING_PHASE && capture)
|
||
) {
|
||
continue;
|
||
}
|
||
|
||
if (once) {
|
||
ArrayPrototypeSplice(
|
||
targetListeners[type],
|
||
ArrayPrototypeIndexOf(targetListeners[type], listener),
|
||
1,
|
||
);
|
||
}
|
||
|
||
if (passive) {
|
||
setInPassiveListener(eventImpl, true);
|
||
}
|
||
|
||
if (typeof listener.callback === "object") {
|
||
if (typeof listener.callback.handleEvent === "function") {
|
||
listener.callback.handleEvent(eventImpl);
|
||
}
|
||
} else {
|
||
FunctionPrototypeCall(
|
||
listener.callback,
|
||
eventImpl.currentTarget,
|
||
eventImpl,
|
||
);
|
||
}
|
||
|
||
setInPassiveListener(eventImpl, false);
|
||
|
||
if (getStopImmediatePropagation(eventImpl)) {
|
||
return found;
|
||
}
|
||
}
|
||
|
||
return found;
|
||
}
|
||
|
||
/** Invokes the listeners on a given event path with the supplied event.
|
||
*
|
||
* Ref: https://dom.spec.whatwg.org/#concept-event-listener-invoke */
|
||
function invokeEventListeners(tuple, eventImpl) {
|
||
const path = getPath(eventImpl);
|
||
const tupleIndex = ArrayPrototypeIndexOf(path, tuple);
|
||
for (let i = tupleIndex; i >= 0; i--) {
|
||
const t = path[i];
|
||
if (t.target) {
|
||
setTarget(eventImpl, t.target);
|
||
break;
|
||
}
|
||
}
|
||
|
||
setRelatedTarget(eventImpl, tuple.relatedTarget);
|
||
|
||
if (eventImpl.cancelBubble) {
|
||
return;
|
||
}
|
||
|
||
setCurrentTarget(eventImpl, tuple.item);
|
||
|
||
try {
|
||
innerInvokeEventListeners(eventImpl, getListeners(tuple.item));
|
||
} catch (error) {
|
||
reportException(error);
|
||
}
|
||
}
|
||
|
||
function normalizeEventHandlerOptions(
|
||
options,
|
||
) {
|
||
if (typeof options === "boolean" || typeof options === "undefined") {
|
||
return {
|
||
capture: Boolean(options),
|
||
};
|
||
} else {
|
||
return options;
|
||
}
|
||
}
|
||
|
||
/** Retarget the target following the spec logic.
|
||
*
|
||
* Ref: https://dom.spec.whatwg.org/#retarget */
|
||
function retarget(a, b) {
|
||
while (true) {
|
||
if (!isNode(a)) {
|
||
return a;
|
||
}
|
||
|
||
const aRoot = a.getRootNode();
|
||
|
||
if (aRoot) {
|
||
if (
|
||
!isShadowRoot(aRoot) ||
|
||
(isNode(b) && isShadowInclusiveAncestor(aRoot, b))
|
||
) {
|
||
return a;
|
||
}
|
||
|
||
a = getHost(aRoot);
|
||
}
|
||
}
|
||
}
|
||
|
||
// Accessors for non-public data
|
||
|
||
const eventTargetData = Symbol();
|
||
|
||
function setEventTargetData(target) {
|
||
target[eventTargetData] = getDefaultTargetData();
|
||
}
|
||
|
||
function getAssignedSlot(target) {
|
||
return Boolean(target?.[eventTargetData]?.assignedSlot);
|
||
}
|
||
|
||
function getHasActivationBehavior(target) {
|
||
return Boolean(target?.[eventTargetData]?.hasActivationBehavior);
|
||
}
|
||
|
||
function getHost(target) {
|
||
return target?.[eventTargetData]?.host ?? null;
|
||
}
|
||
|
||
function getListeners(target) {
|
||
return target?.[eventTargetData]?.listeners ?? {};
|
||
}
|
||
|
||
function getMode(target) {
|
||
return target?.[eventTargetData]?.mode ?? null;
|
||
}
|
||
|
||
function listenerCount(target, type) {
|
||
return getListeners(target)?.[type]?.length ?? 0;
|
||
}
|
||
|
||
function getDefaultTargetData() {
|
||
return {
|
||
assignedSlot: false,
|
||
hasActivationBehavior: false,
|
||
host: null,
|
||
listeners: ObjectCreate(null),
|
||
mode: "",
|
||
};
|
||
}
|
||
|
||
// This is lazy loaded because there is a circular dependency with AbortSignal.
|
||
let addEventListenerOptionsConverter;
|
||
|
||
function lazyAddEventListenerOptionsConverter() {
|
||
addEventListenerOptionsConverter ??= webidl.createDictionaryConverter(
|
||
"AddEventListenerOptions",
|
||
[
|
||
{
|
||
key: "capture",
|
||
defaultValue: false,
|
||
converter: webidl.converters.boolean,
|
||
},
|
||
{
|
||
key: "passive",
|
||
defaultValue: false,
|
||
converter: webidl.converters.boolean,
|
||
},
|
||
{
|
||
key: "once",
|
||
defaultValue: false,
|
||
converter: webidl.converters.boolean,
|
||
},
|
||
{
|
||
key: "signal",
|
||
converter: webidl.converters.AbortSignal,
|
||
},
|
||
],
|
||
);
|
||
}
|
||
|
||
webidl.converters.AddEventListenerOptions = (V, opts) => {
|
||
if (webidl.type(V) !== "Object" || V === null) {
|
||
V = { capture: Boolean(V) };
|
||
}
|
||
|
||
lazyAddEventListenerOptionsConverter();
|
||
return addEventListenerOptionsConverter(V, opts);
|
||
};
|
||
|
||
class EventTarget {
|
||
constructor() {
|
||
this[eventTargetData] = getDefaultTargetData();
|
||
this[webidl.brand] = webidl.brand;
|
||
}
|
||
|
||
addEventListener(
|
||
type,
|
||
callback,
|
||
options,
|
||
) {
|
||
const self = this ?? globalThis;
|
||
webidl.assertBranded(self, EventTargetPrototype);
|
||
const prefix = "Failed to execute 'addEventListener' on 'EventTarget'";
|
||
|
||
webidl.requiredArguments(arguments.length, 2, {
|
||
prefix,
|
||
});
|
||
|
||
options = webidl.converters.AddEventListenerOptions(options, {
|
||
prefix,
|
||
context: "Argument 3",
|
||
});
|
||
|
||
if (callback === null) {
|
||
return;
|
||
}
|
||
|
||
const { listeners } = self[eventTargetData];
|
||
|
||
if (!(ReflectHas(listeners, type))) {
|
||
listeners[type] = [];
|
||
}
|
||
|
||
for (const listener of listeners[type]) {
|
||
if (
|
||
((typeof listener.options === "boolean" &&
|
||
listener.options === options.capture) ||
|
||
(typeof listener.options === "object" &&
|
||
listener.options.capture === options.capture)) &&
|
||
listener.callback === callback
|
||
) {
|
||
return;
|
||
}
|
||
}
|
||
if (options?.signal) {
|
||
const signal = options?.signal;
|
||
if (signal.aborted) {
|
||
// If signal is not null and its aborted flag is set, then return.
|
||
return;
|
||
} else {
|
||
// If listener’s signal is not null, then add the following abort
|
||
// abort steps to it: Remove an event listener.
|
||
signal.addEventListener("abort", () => {
|
||
self.removeEventListener(type, callback, options);
|
||
});
|
||
}
|
||
}
|
||
|
||
ArrayPrototypePush(listeners[type], { callback, options });
|
||
}
|
||
|
||
removeEventListener(
|
||
type,
|
||
callback,
|
||
options,
|
||
) {
|
||
const self = this ?? globalThis;
|
||
webidl.assertBranded(self, EventTargetPrototype);
|
||
webidl.requiredArguments(arguments.length, 2, {
|
||
prefix: "Failed to execute 'removeEventListener' on 'EventTarget'",
|
||
});
|
||
|
||
const { listeners } = self[eventTargetData];
|
||
if (callback !== null && ReflectHas(listeners, type)) {
|
||
listeners[type] = ArrayPrototypeFilter(
|
||
listeners[type],
|
||
(listener) => listener.callback !== callback,
|
||
);
|
||
} else if (callback === null || !listeners[type]) {
|
||
return;
|
||
}
|
||
|
||
options = normalizeEventHandlerOptions(options);
|
||
|
||
for (let i = 0; i < listeners[type].length; ++i) {
|
||
const listener = listeners[type][i];
|
||
if (
|
||
((typeof listener.options === "boolean" &&
|
||
listener.options === options.capture) ||
|
||
(typeof listener.options === "object" &&
|
||
listener.options.capture === options.capture)) &&
|
||
listener.callback === callback
|
||
) {
|
||
ArrayPrototypeSplice(listeners[type], i, 1);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
dispatchEvent(event) {
|
||
// If `this` is not present, then fallback to global scope. We don't use
|
||
// `globalThis` directly here, because it could be deleted by user.
|
||
// Instead use saved reference to global scope when the script was
|
||
// executed.
|
||
const self = this ?? window;
|
||
webidl.assertBranded(self, EventTargetPrototype);
|
||
webidl.requiredArguments(arguments.length, 1, {
|
||
prefix: "Failed to execute 'dispatchEvent' on 'EventTarget'",
|
||
});
|
||
|
||
const { listeners } = self[eventTargetData];
|
||
if (!ReflectHas(listeners, event.type)) {
|
||
setTarget(event, this);
|
||
return true;
|
||
}
|
||
|
||
if (getDispatched(event)) {
|
||
throw new DOMException("Invalid event state.", "InvalidStateError");
|
||
}
|
||
|
||
if (event.eventPhase !== Event.NONE) {
|
||
throw new DOMException("Invalid event state.", "InvalidStateError");
|
||
}
|
||
|
||
return dispatch(self, event);
|
||
}
|
||
|
||
getParent(_event) {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
webidl.configurePrototype(EventTarget);
|
||
const EventTargetPrototype = EventTarget.prototype;
|
||
|
||
defineEnumerableProps(EventTarget, [
|
||
"addEventListener",
|
||
"removeEventListener",
|
||
"dispatchEvent",
|
||
]);
|
||
|
||
class ErrorEvent extends Event {
|
||
#message = "";
|
||
#filename = "";
|
||
#lineno = "";
|
||
#colno = "";
|
||
#error = "";
|
||
|
||
get message() {
|
||
return this.#message;
|
||
}
|
||
get filename() {
|
||
return this.#filename;
|
||
}
|
||
get lineno() {
|
||
return this.#lineno;
|
||
}
|
||
get colno() {
|
||
return this.#colno;
|
||
}
|
||
get error() {
|
||
return this.#error;
|
||
}
|
||
|
||
constructor(
|
||
type,
|
||
{
|
||
bubbles,
|
||
cancelable,
|
||
composed,
|
||
message = "",
|
||
filename = "",
|
||
lineno = 0,
|
||
colno = 0,
|
||
error,
|
||
} = {},
|
||
) {
|
||
super(type, {
|
||
bubbles: bubbles,
|
||
cancelable: cancelable,
|
||
composed: composed,
|
||
});
|
||
|
||
this.#message = message;
|
||
this.#filename = filename;
|
||
this.#lineno = lineno;
|
||
this.#colno = colno;
|
||
this.#error = error;
|
||
}
|
||
|
||
[SymbolFor("Deno.privateCustomInspect")](inspect) {
|
||
return inspect(consoleInternal.createFilteredInspectProxy({
|
||
object: this,
|
||
evaluate: ObjectPrototypeIsPrototypeOf(ErrorEvent.prototype, this),
|
||
keys: [
|
||
...new SafeArrayIterator(EVENT_PROPS),
|
||
"message",
|
||
"filename",
|
||
"lineno",
|
||
"colno",
|
||
"error",
|
||
],
|
||
}));
|
||
}
|
||
|
||
// TODO(lucacasonato): remove when this interface is spec aligned
|
||
[SymbolToStringTag] = "ErrorEvent";
|
||
}
|
||
|
||
defineEnumerableProps(ErrorEvent, [
|
||
"message",
|
||
"filename",
|
||
"lineno",
|
||
"colno",
|
||
"error",
|
||
]);
|
||
|
||
class CloseEvent extends Event {
|
||
#wasClean = "";
|
||
#code = "";
|
||
#reason = "";
|
||
|
||
get wasClean() {
|
||
return this.#wasClean;
|
||
}
|
||
get code() {
|
||
return this.#code;
|
||
}
|
||
get reason() {
|
||
return this.#reason;
|
||
}
|
||
|
||
constructor(type, {
|
||
bubbles,
|
||
cancelable,
|
||
composed,
|
||
wasClean = false,
|
||
code = 0,
|
||
reason = "",
|
||
} = {}) {
|
||
super(type, {
|
||
bubbles: bubbles,
|
||
cancelable: cancelable,
|
||
composed: composed,
|
||
});
|
||
|
||
this.#wasClean = wasClean;
|
||
this.#code = code;
|
||
this.#reason = reason;
|
||
}
|
||
|
||
[SymbolFor("Deno.privateCustomInspect")](inspect) {
|
||
return inspect(consoleInternal.createFilteredInspectProxy({
|
||
object: this,
|
||
evaluate: ObjectPrototypeIsPrototypeOf(CloseEvent.prototype, this),
|
||
keys: [
|
||
...new SafeArrayIterator(EVENT_PROPS),
|
||
"wasClean",
|
||
"code",
|
||
"reason",
|
||
],
|
||
}));
|
||
}
|
||
}
|
||
|
||
class MessageEvent extends Event {
|
||
get source() {
|
||
return null;
|
||
}
|
||
|
||
constructor(type, eventInitDict) {
|
||
super(type, {
|
||
bubbles: eventInitDict?.bubbles ?? false,
|
||
cancelable: eventInitDict?.cancelable ?? false,
|
||
composed: eventInitDict?.composed ?? false,
|
||
});
|
||
|
||
this.data = eventInitDict?.data ?? null;
|
||
this.ports = eventInitDict?.ports ?? [];
|
||
this.origin = eventInitDict?.origin ?? "";
|
||
this.lastEventId = eventInitDict?.lastEventId ?? "";
|
||
}
|
||
|
||
[SymbolFor("Deno.privateCustomInspect")](inspect) {
|
||
return inspect(consoleInternal.createFilteredInspectProxy({
|
||
object: this,
|
||
evaluate: ObjectPrototypeIsPrototypeOf(MessageEvent.prototype, this),
|
||
keys: [
|
||
...new SafeArrayIterator(EVENT_PROPS),
|
||
"data",
|
||
"origin",
|
||
"lastEventId",
|
||
],
|
||
}));
|
||
}
|
||
|
||
// TODO(lucacasonato): remove when this interface is spec aligned
|
||
[SymbolToStringTag] = "CloseEvent";
|
||
}
|
||
|
||
class CustomEvent extends Event {
|
||
#detail = null;
|
||
|
||
constructor(type, eventInitDict = {}) {
|
||
super(type, eventInitDict);
|
||
webidl.requiredArguments(arguments.length, 1, {
|
||
prefix: "Failed to construct 'CustomEvent'",
|
||
});
|
||
const { detail } = eventInitDict;
|
||
this.#detail = detail;
|
||
}
|
||
|
||
get detail() {
|
||
return this.#detail;
|
||
}
|
||
|
||
[SymbolFor("Deno.privateCustomInspect")](inspect) {
|
||
return inspect(consoleInternal.createFilteredInspectProxy({
|
||
object: this,
|
||
evaluate: ObjectPrototypeIsPrototypeOf(CustomEvent.prototype, this),
|
||
keys: [
|
||
...new SafeArrayIterator(EVENT_PROPS),
|
||
"detail",
|
||
],
|
||
}));
|
||
}
|
||
|
||
// TODO(lucacasonato): remove when this interface is spec aligned
|
||
[SymbolToStringTag] = "CustomEvent";
|
||
}
|
||
|
||
ReflectDefineProperty(CustomEvent.prototype, "detail", {
|
||
enumerable: true,
|
||
});
|
||
|
||
// ProgressEvent could also be used in other DOM progress event emits.
|
||
// Current use is for FileReader.
|
||
class ProgressEvent extends Event {
|
||
constructor(type, eventInitDict = {}) {
|
||
super(type, eventInitDict);
|
||
|
||
this.lengthComputable = eventInitDict?.lengthComputable ?? false;
|
||
this.loaded = eventInitDict?.loaded ?? 0;
|
||
this.total = eventInitDict?.total ?? 0;
|
||
}
|
||
|
||
[SymbolFor("Deno.privateCustomInspect")](inspect) {
|
||
return inspect(consoleInternal.createFilteredInspectProxy({
|
||
object: this,
|
||
evaluate: ObjectPrototypeIsPrototypeOf(ProgressEvent.prototype, this),
|
||
keys: [
|
||
...new SafeArrayIterator(EVENT_PROPS),
|
||
"lengthComputable",
|
||
"loaded",
|
||
"total",
|
||
],
|
||
}));
|
||
}
|
||
|
||
// TODO(lucacasonato): remove when this interface is spec aligned
|
||
[SymbolToStringTag] = "ProgressEvent";
|
||
}
|
||
|
||
const _eventHandlers = Symbol("eventHandlers");
|
||
|
||
function makeWrappedHandler(handler, isSpecialErrorEventHandler) {
|
||
function wrappedHandler(evt) {
|
||
if (typeof wrappedHandler.handler !== "function") {
|
||
return;
|
||
}
|
||
|
||
if (
|
||
isSpecialErrorEventHandler &&
|
||
ObjectPrototypeIsPrototypeOf(ErrorEvent.prototype, evt) &&
|
||
evt.type === "error"
|
||
) {
|
||
const ret = FunctionPrototypeCall(
|
||
wrappedHandler.handler,
|
||
this,
|
||
evt.message,
|
||
evt.filename,
|
||
evt.lineno,
|
||
evt.colno,
|
||
evt.error,
|
||
);
|
||
if (ret === true) {
|
||
evt.preventDefault();
|
||
}
|
||
return;
|
||
}
|
||
|
||
return FunctionPrototypeCall(wrappedHandler.handler, this, evt);
|
||
}
|
||
wrappedHandler.handler = handler;
|
||
return wrappedHandler;
|
||
}
|
||
|
||
// `init` is an optional function that will be called the first time that the
|
||
// event handler property is set. It will be called with the object on which
|
||
// the property is set as its argument.
|
||
// `isSpecialErrorEventHandler` can be set to true to opt into the special
|
||
// behavior of event handlers for the "error" event in a global scope.
|
||
function defineEventHandler(
|
||
emitter,
|
||
name,
|
||
init = undefined,
|
||
isSpecialErrorEventHandler = false,
|
||
) {
|
||
// HTML specification section 8.1.7.1
|
||
ObjectDefineProperty(emitter, `on${name}`, {
|
||
get() {
|
||
if (!this[_eventHandlers]) {
|
||
return null;
|
||
}
|
||
|
||
return MapPrototypeGet(this[_eventHandlers], name)?.handler ?? null;
|
||
},
|
||
set(value) {
|
||
// All three Web IDL event handler types are nullable callback functions
|
||
// with the [LegacyTreatNonObjectAsNull] extended attribute, meaning
|
||
// anything other than an object is treated as null.
|
||
if (typeof value !== "object" && typeof value !== "function") {
|
||
value = null;
|
||
}
|
||
|
||
if (!this[_eventHandlers]) {
|
||
this[_eventHandlers] = new Map();
|
||
}
|
||
let handlerWrapper = MapPrototypeGet(this[_eventHandlers], name);
|
||
if (handlerWrapper) {
|
||
handlerWrapper.handler = value;
|
||
} else if (value !== null) {
|
||
handlerWrapper = makeWrappedHandler(
|
||
value,
|
||
isSpecialErrorEventHandler,
|
||
);
|
||
this.addEventListener(name, handlerWrapper);
|
||
init?.(this);
|
||
}
|
||
MapPrototypeSet(this[_eventHandlers], name, handlerWrapper);
|
||
},
|
||
configurable: true,
|
||
enumerable: true,
|
||
});
|
||
}
|
||
|
||
let reportExceptionStackedCalls = 0;
|
||
|
||
// https://html.spec.whatwg.org/#report-the-exception
|
||
function reportException(error) {
|
||
reportExceptionStackedCalls++;
|
||
const jsError = core.destructureError(error);
|
||
const message = jsError.exceptionMessage;
|
||
let filename = "";
|
||
let lineno = 0;
|
||
let colno = 0;
|
||
if (jsError.frames.length > 0) {
|
||
filename = jsError.frames[0].fileName;
|
||
lineno = jsError.frames[0].lineNumber;
|
||
colno = jsError.frames[0].columnNumber;
|
||
} else {
|
||
const jsError = core.destructureError(new Error());
|
||
for (const frame of jsError.frames) {
|
||
if (
|
||
typeof frame.fileName == "string" &&
|
||
!StringPrototypeStartsWith(frame.fileName, "deno:")
|
||
) {
|
||
filename = frame.fileName;
|
||
lineno = frame.lineNumber;
|
||
colno = frame.columnNumber;
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
const event = new ErrorEvent("error", {
|
||
cancelable: true,
|
||
message,
|
||
filename,
|
||
lineno,
|
||
colno,
|
||
error,
|
||
});
|
||
// Avoid recursing `reportException()` via error handlers more than once.
|
||
if (reportExceptionStackedCalls > 1 || window.dispatchEvent(event)) {
|
||
core.terminate(error);
|
||
}
|
||
reportExceptionStackedCalls--;
|
||
}
|
||
|
||
function checkThis(thisArg) {
|
||
if (thisArg !== null && thisArg !== undefined && thisArg !== globalThis) {
|
||
throw new TypeError("Illegal invocation");
|
||
}
|
||
}
|
||
|
||
// https://html.spec.whatwg.org/#dom-reporterror
|
||
function reportError(error) {
|
||
checkThis(this);
|
||
const prefix = "Failed to call 'reportError'";
|
||
webidl.requiredArguments(arguments.length, 1, { prefix });
|
||
reportException(error);
|
||
}
|
||
|
||
window[webidl.brand] = webidl.brand;
|
||
window.Event = Event;
|
||
window.EventTarget = EventTarget;
|
||
window.ErrorEvent = ErrorEvent;
|
||
window.CloseEvent = CloseEvent;
|
||
window.MessageEvent = MessageEvent;
|
||
window.CustomEvent = CustomEvent;
|
||
window.ProgressEvent = ProgressEvent;
|
||
window.dispatchEvent = EventTarget.prototype.dispatchEvent;
|
||
window.addEventListener = EventTarget.prototype.addEventListener;
|
||
window.removeEventListener = EventTarget.prototype.removeEventListener;
|
||
window.reportError = reportError;
|
||
window.__bootstrap.eventTarget = {
|
||
EventTarget,
|
||
setEventTargetData,
|
||
listenerCount,
|
||
};
|
||
window.__bootstrap.event = {
|
||
reportException,
|
||
setIsTrusted,
|
||
setTarget,
|
||
defineEventHandler,
|
||
};
|
||
})(this);
|