mirror of
https://github.com/denoland/deno.git
synced 2024-10-31 09:14:20 -04:00
900953a65a
Co-authored-by: Yoshiya Hinosawa <stibium121@gmail.com>
1194 lines
28 KiB
JavaScript
1194 lines
28 KiB
JavaScript
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
|
||
|
||
// This module follows most of the WHATWG Living Standard for the DOM logic.
|
||
// Many parts of the DOM are not implemented in Deno, but the logic for those
|
||
// parts still exists. This means you will observe a lot of strange structures
|
||
// and impossible logic branches based on what Deno currently supports.
|
||
"use strict";
|
||
|
||
((window) => {
|
||
const eventData = new WeakMap();
|
||
|
||
function requiredArguments(
|
||
name,
|
||
length,
|
||
required,
|
||
) {
|
||
if (length < required) {
|
||
const errMsg = `${name} requires at least ${required} argument${
|
||
required === 1 ? "" : "s"
|
||
}, but only ${length} present`;
|
||
throw new TypeError(errMsg);
|
||
}
|
||
}
|
||
|
||
// accessors for non runtime visible data
|
||
|
||
function getDispatched(event) {
|
||
return Boolean(eventData.get(event)?.dispatched);
|
||
}
|
||
|
||
function getPath(event) {
|
||
return eventData.get(event)?.path ?? [];
|
||
}
|
||
|
||
function getStopImmediatePropagation(event) {
|
||
return Boolean(eventData.get(event)?.stopImmediatePropagation);
|
||
}
|
||
|
||
function setCurrentTarget(
|
||
event,
|
||
value,
|
||
) {
|
||
event.currentTarget = value;
|
||
}
|
||
|
||
function setIsTrusted(event, value) {
|
||
const data = eventData.get(event);
|
||
if (data) {
|
||
data.isTrusted = value;
|
||
}
|
||
}
|
||
|
||
function setDispatched(event, value) {
|
||
const data = eventData.get(event);
|
||
if (data) {
|
||
data.dispatched = value;
|
||
}
|
||
}
|
||
|
||
function setEventPhase(event, value) {
|
||
event.eventPhase = value;
|
||
}
|
||
|
||
function setInPassiveListener(event, value) {
|
||
const data = eventData.get(event);
|
||
if (data) {
|
||
data.inPassiveListener = value;
|
||
}
|
||
}
|
||
|
||
function setPath(event, value) {
|
||
const data = eventData.get(event);
|
||
if (data) {
|
||
data.path = value;
|
||
}
|
||
}
|
||
|
||
function setRelatedTarget(
|
||
event,
|
||
value,
|
||
) {
|
||
if ("relatedTarget" in event) {
|
||
event.relatedTarget = value;
|
||
}
|
||
}
|
||
|
||
function setTarget(event, value) {
|
||
event.target = value;
|
||
}
|
||
|
||
function setStopImmediatePropagation(
|
||
event,
|
||
value,
|
||
) {
|
||
const data = eventData.get(event);
|
||
if (data) {
|
||
data.stopImmediatePropagation = value;
|
||
}
|
||
}
|
||
|
||
// Type guards that widen the event type
|
||
|
||
function hasRelatedTarget(
|
||
event,
|
||
) {
|
||
return "relatedTarget" in event;
|
||
}
|
||
|
||
const isTrusted = Object.getOwnPropertyDescriptor({
|
||
get isTrusted() {
|
||
return eventData.get(this).isTrusted;
|
||
},
|
||
}, "isTrusted").get;
|
||
|
||
class Event {
|
||
#canceledFlag = false;
|
||
#stopPropagationFlag = false;
|
||
#attributes = {};
|
||
|
||
constructor(type, eventInitDict = {}) {
|
||
requiredArguments("Event", arguments.length, 1);
|
||
type = String(type);
|
||
this.#attributes = {
|
||
type,
|
||
bubbles: eventInitDict.bubbles ?? false,
|
||
cancelable: eventInitDict.cancelable ?? false,
|
||
composed: eventInitDict.composed ?? false,
|
||
currentTarget: null,
|
||
eventPhase: Event.NONE,
|
||
target: null,
|
||
timeStamp: Date.now(),
|
||
};
|
||
eventData.set(this, {
|
||
dispatched: false,
|
||
inPassiveListener: false,
|
||
isTrusted: false,
|
||
path: [],
|
||
stopImmediatePropagation: false,
|
||
});
|
||
Reflect.defineProperty(this, "isTrusted", {
|
||
enumerable: true,
|
||
get: isTrusted,
|
||
});
|
||
}
|
||
|
||
[Symbol.for("Deno.customInspect")](inspect) {
|
||
return buildCustomInspectOutput(this, EVENT_PROPS, inspect);
|
||
}
|
||
|
||
get bubbles() {
|
||
return this.#attributes.bubbles;
|
||
}
|
||
|
||
get cancelBubble() {
|
||
return this.#stopPropagationFlag;
|
||
}
|
||
|
||
set cancelBubble(value) {
|
||
this.#stopPropagationFlag = value;
|
||
}
|
||
|
||
get cancelable() {
|
||
return this.#attributes.cancelable;
|
||
}
|
||
|
||
get composed() {
|
||
return this.#attributes.composed;
|
||
}
|
||
|
||
get currentTarget() {
|
||
return this.#attributes.currentTarget;
|
||
}
|
||
|
||
set currentTarget(value) {
|
||
this.#attributes = {
|
||
type: this.type,
|
||
bubbles: this.bubbles,
|
||
cancelable: this.cancelable,
|
||
composed: this.composed,
|
||
currentTarget: value,
|
||
eventPhase: this.eventPhase,
|
||
target: this.target,
|
||
timeStamp: this.timeStamp,
|
||
};
|
||
}
|
||
|
||
get defaultPrevented() {
|
||
return this.#canceledFlag;
|
||
}
|
||
|
||
get eventPhase() {
|
||
return this.#attributes.eventPhase;
|
||
}
|
||
|
||
set eventPhase(value) {
|
||
this.#attributes = {
|
||
type: this.type,
|
||
bubbles: this.bubbles,
|
||
cancelable: this.cancelable,
|
||
composed: this.composed,
|
||
currentTarget: this.currentTarget,
|
||
eventPhase: value,
|
||
target: this.target,
|
||
timeStamp: this.timeStamp,
|
||
};
|
||
}
|
||
|
||
get initialized() {
|
||
return true;
|
||
}
|
||
|
||
get target() {
|
||
return this.#attributes.target;
|
||
}
|
||
|
||
set target(value) {
|
||
this.#attributes = {
|
||
type: this.type,
|
||
bubbles: this.bubbles,
|
||
cancelable: this.cancelable,
|
||
composed: this.composed,
|
||
currentTarget: this.currentTarget,
|
||
eventPhase: this.eventPhase,
|
||
target: value,
|
||
timeStamp: this.timeStamp,
|
||
};
|
||
}
|
||
|
||
get timeStamp() {
|
||
return this.#attributes.timeStamp;
|
||
}
|
||
|
||
get type() {
|
||
return this.#attributes.type;
|
||
}
|
||
|
||
composedPath() {
|
||
const path = eventData.get(this).path;
|
||
if (path.length === 0) {
|
||
return [];
|
||
}
|
||
|
||
if (!this.currentTarget) {
|
||
throw new Error("assertion error");
|
||
}
|
||
const composedPath = [
|
||
{
|
||
item: this.currentTarget,
|
||
itemInShadowTree: false,
|
||
relatedTarget: null,
|
||
rootOfClosedTree: false,
|
||
slotInClosedTree: false,
|
||
target: null,
|
||
touchTargetList: [],
|
||
},
|
||
];
|
||
|
||
let currentTargetIndex = 0;
|
||
let currentTargetHiddenSubtreeLevel = 0;
|
||
|
||
for (let index = path.length - 1; index >= 0; index--) {
|
||
const { item, rootOfClosedTree, slotInClosedTree } = path[index];
|
||
|
||
if (rootOfClosedTree) {
|
||
currentTargetHiddenSubtreeLevel++;
|
||
}
|
||
|
||
if (item === this.currentTarget) {
|
||
currentTargetIndex = index;
|
||
break;
|
||
}
|
||
|
||
if (slotInClosedTree) {
|
||
currentTargetHiddenSubtreeLevel--;
|
||
}
|
||
}
|
||
|
||
let currentHiddenLevel = currentTargetHiddenSubtreeLevel;
|
||
let maxHiddenLevel = currentTargetHiddenSubtreeLevel;
|
||
|
||
for (let i = currentTargetIndex - 1; i >= 0; i--) {
|
||
const { item, rootOfClosedTree, slotInClosedTree } = path[i];
|
||
|
||
if (rootOfClosedTree) {
|
||
currentHiddenLevel++;
|
||
}
|
||
|
||
if (currentHiddenLevel <= maxHiddenLevel) {
|
||
composedPath.unshift({
|
||
item,
|
||
itemInShadowTree: false,
|
||
relatedTarget: null,
|
||
rootOfClosedTree: false,
|
||
slotInClosedTree: false,
|
||
target: null,
|
||
touchTargetList: [],
|
||
});
|
||
}
|
||
|
||
if (slotInClosedTree) {
|
||
currentHiddenLevel--;
|
||
|
||
if (currentHiddenLevel < maxHiddenLevel) {
|
||
maxHiddenLevel = currentHiddenLevel;
|
||
}
|
||
}
|
||
}
|
||
|
||
currentHiddenLevel = currentTargetHiddenSubtreeLevel;
|
||
maxHiddenLevel = currentTargetHiddenSubtreeLevel;
|
||
|
||
for (let index = currentTargetIndex + 1; index < path.length; index++) {
|
||
const { item, rootOfClosedTree, slotInClosedTree } = path[index];
|
||
|
||
if (slotInClosedTree) {
|
||
currentHiddenLevel++;
|
||
}
|
||
|
||
if (currentHiddenLevel <= maxHiddenLevel) {
|
||
composedPath.push({
|
||
item,
|
||
itemInShadowTree: false,
|
||
relatedTarget: null,
|
||
rootOfClosedTree: false,
|
||
slotInClosedTree: false,
|
||
target: null,
|
||
touchTargetList: [],
|
||
});
|
||
}
|
||
|
||
if (rootOfClosedTree) {
|
||
currentHiddenLevel--;
|
||
|
||
if (currentHiddenLevel < maxHiddenLevel) {
|
||
maxHiddenLevel = currentHiddenLevel;
|
||
}
|
||
}
|
||
}
|
||
return composedPath.map((p) => p.item);
|
||
}
|
||
|
||
preventDefault() {
|
||
if (this.cancelable && !eventData.get(this).inPassiveListener) {
|
||
this.#canceledFlag = true;
|
||
}
|
||
}
|
||
|
||
stopPropagation() {
|
||
this.#stopPropagationFlag = true;
|
||
}
|
||
|
||
stopImmediatePropagation() {
|
||
this.#stopPropagationFlag = true;
|
||
eventData.get(this).stopImmediatePropagation = true;
|
||
}
|
||
|
||
get NONE() {
|
||
return Event.NONE;
|
||
}
|
||
|
||
get CAPTURING_PHASE() {
|
||
return Event.CAPTURING_PHASE;
|
||
}
|
||
|
||
get AT_TARGET() {
|
||
return Event.AT_TARGET;
|
||
}
|
||
|
||
get BUBBLING_PHASE() {
|
||
return Event.BUBBLING_PHASE;
|
||
}
|
||
|
||
static get NONE() {
|
||
return 0;
|
||
}
|
||
|
||
static get CAPTURING_PHASE() {
|
||
return 1;
|
||
}
|
||
|
||
static get AT_TARGET() {
|
||
return 2;
|
||
}
|
||
|
||
static get BUBBLING_PHASE() {
|
||
return 3;
|
||
}
|
||
}
|
||
|
||
function buildCustomInspectOutput(object, keys, inspect) {
|
||
const inspectObject = Object.fromEntries(keys.map((k) => [k, object[k]]));
|
||
return `${object.constructor.name} ${inspect(inspectObject)}`;
|
||
}
|
||
|
||
function defineEnumerableProps(
|
||
Ctor,
|
||
props,
|
||
) {
|
||
for (const prop of props) {
|
||
Reflect.defineProperty(Ctor.prototype, prop, { enumerable: true });
|
||
}
|
||
}
|
||
|
||
const EVENT_PROPS = [
|
||
"bubbles",
|
||
"cancelable",
|
||
"composed",
|
||
"currentTarget",
|
||
"defaultPrevented",
|
||
"eventPhase",
|
||
"target",
|
||
"timeStamp",
|
||
"type",
|
||
];
|
||
|
||
defineEnumerableProps(Event, EVENT_PROPS);
|
||
|
||
// This is currently the only node type we are using, so instead of implementing
|
||
// the whole of the Node interface at the moment, this just gives us the one
|
||
// value to power the standards based logic
|
||
const DOCUMENT_FRAGMENT_NODE = 11;
|
||
|
||
// DOM Logic Helper functions and type guards
|
||
|
||
/** Get the parent node, for event targets that have a parent.
|
||
*
|
||
* Ref: https://dom.spec.whatwg.org/#get-the-parent */
|
||
function getParent(eventTarget) {
|
||
return isNode(eventTarget) ? eventTarget.parentNode : null;
|
||
}
|
||
|
||
function getRoot(eventTarget) {
|
||
return isNode(eventTarget)
|
||
? eventTarget.getRootNode({ composed: true })
|
||
: null;
|
||
}
|
||
|
||
function isNode(
|
||
eventTarget,
|
||
) {
|
||
return Boolean(eventTarget && "nodeType" in eventTarget);
|
||
}
|
||
|
||
// https://dom.spec.whatwg.org/#concept-shadow-including-inclusive-ancestor
|
||
function isShadowInclusiveAncestor(
|
||
ancestor,
|
||
node,
|
||
) {
|
||
while (isNode(node)) {
|
||
if (node === ancestor) {
|
||
return true;
|
||
}
|
||
|
||
if (isShadowRoot(node)) {
|
||
node = node && getHost(node);
|
||
} else {
|
||
node = getParent(node);
|
||
}
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
function isShadowRoot(nodeImpl) {
|
||
return Boolean(
|
||
nodeImpl &&
|
||
isNode(nodeImpl) &&
|
||
nodeImpl.nodeType === DOCUMENT_FRAGMENT_NODE &&
|
||
getHost(nodeImpl) != null,
|
||
);
|
||
}
|
||
|
||
function isSlotable(
|
||
nodeImpl,
|
||
) {
|
||
return Boolean(isNode(nodeImpl) && "assignedSlot" in nodeImpl);
|
||
}
|
||
|
||
// DOM Logic functions
|
||
|
||
/** Append a path item to an event's path.
|
||
*
|
||
* Ref: https://dom.spec.whatwg.org/#concept-event-path-append
|
||
*/
|
||
function appendToEventPath(
|
||
eventImpl,
|
||
target,
|
||
targetOverride,
|
||
relatedTarget,
|
||
touchTargets,
|
||
slotInClosedTree,
|
||
) {
|
||
const itemInShadowTree = isNode(target) && isShadowRoot(getRoot(target));
|
||
const rootOfClosedTree = isShadowRoot(target) &&
|
||
getMode(target) === "closed";
|
||
|
||
getPath(eventImpl).push({
|
||
item: target,
|
||
itemInShadowTree,
|
||
target: targetOverride,
|
||
relatedTarget,
|
||
touchTargetList: touchTargets,
|
||
rootOfClosedTree,
|
||
slotInClosedTree,
|
||
});
|
||
}
|
||
|
||
function dispatch(
|
||
targetImpl,
|
||
eventImpl,
|
||
targetOverride,
|
||
) {
|
||
let clearTargets = false;
|
||
let activationTarget = null;
|
||
|
||
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 = targetListeners[type].slice();
|
||
|
||
for (let i = 0; i < handlers.length; i++) {
|
||
const listener = handlers[i];
|
||
|
||
let capture, once, passive, signal;
|
||
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 (!targetListeners[type].includes(listener)) {
|
||
continue;
|
||
}
|
||
|
||
found = true;
|
||
|
||
if (
|
||
(eventImpl.eventPhase === Event.CAPTURING_PHASE && !capture) ||
|
||
(eventImpl.eventPhase === Event.BUBBLING_PHASE && capture)
|
||
) {
|
||
continue;
|
||
}
|
||
|
||
if (once) {
|
||
targetListeners[type].splice(
|
||
targetListeners[type].indexOf(listener),
|
||
1,
|
||
);
|
||
}
|
||
|
||
if (passive) {
|
||
setInPassiveListener(eventImpl, true);
|
||
}
|
||
|
||
if (typeof listener.callback === "object") {
|
||
if (typeof listener.callback.handleEvent === "function") {
|
||
listener.callback.handleEvent(eventImpl);
|
||
}
|
||
} else {
|
||
listener.callback.call(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 = path.indexOf(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);
|
||
|
||
innerInvokeEventListeners(eventImpl, getListeners(tuple.item));
|
||
}
|
||
|
||
function normalizeAddEventHandlerOptions(
|
||
options,
|
||
) {
|
||
if (typeof options === "boolean" || typeof options === "undefined") {
|
||
return {
|
||
capture: Boolean(options),
|
||
once: false,
|
||
passive: false,
|
||
};
|
||
} else {
|
||
return options;
|
||
}
|
||
}
|
||
|
||
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 = new WeakMap();
|
||
|
||
function setEventTargetData(value) {
|
||
eventTargetData.set(value, getDefaultTargetData());
|
||
}
|
||
|
||
function getAssignedSlot(target) {
|
||
return Boolean(eventTargetData.get(target)?.assignedSlot);
|
||
}
|
||
|
||
function getHasActivationBehavior(target) {
|
||
return Boolean(
|
||
eventTargetData.get(target)?.hasActivationBehavior,
|
||
);
|
||
}
|
||
|
||
function getHost(target) {
|
||
return eventTargetData.get(target)?.host ?? null;
|
||
}
|
||
|
||
function getListeners(target) {
|
||
return eventTargetData.get(target)?.listeners ?? {};
|
||
}
|
||
|
||
function getMode(target) {
|
||
return eventTargetData.get(target)?.mode ?? null;
|
||
}
|
||
|
||
function getDefaultTargetData() {
|
||
return {
|
||
assignedSlot: false,
|
||
hasActivationBehavior: false,
|
||
host: null,
|
||
listeners: Object.create(null),
|
||
mode: "",
|
||
};
|
||
}
|
||
|
||
class EventTarget {
|
||
constructor() {
|
||
eventTargetData.set(this, getDefaultTargetData());
|
||
}
|
||
|
||
addEventListener(
|
||
type,
|
||
callback,
|
||
options,
|
||
) {
|
||
requiredArguments("EventTarget.addEventListener", arguments.length, 2);
|
||
if (callback === null) {
|
||
return;
|
||
}
|
||
|
||
options = normalizeAddEventHandlerOptions(options);
|
||
const { listeners } = eventTargetData.get(this ?? globalThis);
|
||
|
||
if (!(type in listeners)) {
|
||
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", () => {
|
||
this.removeEventListener(type, callback, options);
|
||
});
|
||
}
|
||
}
|
||
listeners[type].push({ callback, options });
|
||
}
|
||
|
||
removeEventListener(
|
||
type,
|
||
callback,
|
||
options,
|
||
) {
|
||
requiredArguments("EventTarget.removeEventListener", arguments.length, 2);
|
||
|
||
const listeners = eventTargetData.get(this ?? globalThis).listeners;
|
||
if (callback !== null && type in listeners) {
|
||
listeners[type] = listeners[type].filter(
|
||
(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
|
||
) {
|
||
listeners[type].splice(i, 1);
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
dispatchEvent(event) {
|
||
requiredArguments("EventTarget.dispatchEvent", arguments.length, 1);
|
||
const self = this ?? globalThis;
|
||
|
||
const listeners = eventTargetData.get(self).listeners;
|
||
if (!(event.type in listeners)) {
|
||
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);
|
||
}
|
||
|
||
get [Symbol.toStringTag]() {
|
||
return "EventTarget";
|
||
}
|
||
|
||
getParent(_event) {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
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 = null,
|
||
} = {},
|
||
) {
|
||
super(type, {
|
||
bubbles: bubbles,
|
||
cancelable: cancelable,
|
||
composed: composed,
|
||
});
|
||
|
||
this.#message = message;
|
||
this.#filename = filename;
|
||
this.#lineno = lineno;
|
||
this.#colno = colno;
|
||
this.#error = error;
|
||
}
|
||
|
||
get [Symbol.toStringTag]() {
|
||
return "ErrorEvent";
|
||
}
|
||
|
||
[Symbol.for("Deno.customInspect")](inspect) {
|
||
return buildCustomInspectOutput(this, [
|
||
...EVENT_PROPS,
|
||
"message",
|
||
"filename",
|
||
"lineno",
|
||
"colno",
|
||
"error",
|
||
], inspect);
|
||
}
|
||
}
|
||
|
||
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;
|
||
}
|
||
|
||
[Symbol.for("Deno.customInspect")](inspect) {
|
||
return buildCustomInspectOutput(this, [
|
||
...EVENT_PROPS,
|
||
"wasClean",
|
||
"code",
|
||
"reason",
|
||
], inspect);
|
||
}
|
||
}
|
||
|
||
class MessageEvent extends Event {
|
||
constructor(type, eventInitDict) {
|
||
super(type, {
|
||
bubbles: eventInitDict?.bubbles ?? false,
|
||
cancelable: eventInitDict?.cancelable ?? false,
|
||
composed: eventInitDict?.composed ?? false,
|
||
});
|
||
|
||
this.data = eventInitDict?.data ?? null;
|
||
this.origin = eventInitDict?.origin ?? "";
|
||
this.lastEventId = eventInitDict?.lastEventId ?? "";
|
||
}
|
||
|
||
[Symbol.for("Deno.customInspect")](inspect) {
|
||
return buildCustomInspectOutput(this, [
|
||
...EVENT_PROPS,
|
||
"data",
|
||
"origin",
|
||
"lastEventId",
|
||
], inspect);
|
||
}
|
||
}
|
||
|
||
class CustomEvent extends Event {
|
||
#detail = null;
|
||
|
||
constructor(type, eventInitDict = {}) {
|
||
super(type, eventInitDict);
|
||
requiredArguments("CustomEvent", arguments.length, 1);
|
||
const { detail } = eventInitDict;
|
||
this.#detail = detail;
|
||
}
|
||
|
||
get detail() {
|
||
return this.#detail;
|
||
}
|
||
|
||
get [Symbol.toStringTag]() {
|
||
return "CustomEvent";
|
||
}
|
||
|
||
[Symbol.for("Deno.customInspect")](inspect) {
|
||
return buildCustomInspectOutput(this, [
|
||
...EVENT_PROPS,
|
||
"detail",
|
||
], inspect);
|
||
}
|
||
}
|
||
|
||
Reflect.defineProperty(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;
|
||
}
|
||
|
||
[Symbol.for("Deno.customInspect")](inspect) {
|
||
return buildCustomInspectOutput(this, [
|
||
...EVENT_PROPS,
|
||
"lengthComputable",
|
||
"loaded",
|
||
"total",
|
||
], inspect);
|
||
}
|
||
}
|
||
|
||
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.__bootstrap = (window.__bootstrap || {});
|
||
window.__bootstrap.eventTarget = {
|
||
setEventTargetData,
|
||
};
|
||
window.__bootstrap.event = {
|
||
setIsTrusted,
|
||
};
|
||
})(this);
|