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// Copyright 2018 the Deno authors. All rights reserved. MIT license.
import * as domTypes from "./dom_types";
import * as event from "./event";
import { getPrivateValue } from "./util";
// WeakMaps are recommended for private attributes (see MDN link below)
// tslint:disable-next-line:max-line-length
// https://developer.mozilla.org/en-US/docs/Archive/Add-ons/Add-on_SDK/Guides/Contributor_s_Guide/Private_Properties#Using_WeakMaps
export const customEventAttributes = new WeakMap();
export class CustomEventInit extends event.EventInit
implements domTypes.CustomEventInit {
// tslint:disable-next-line:no-any
detail: any;
constructor({
bubbles = false,
cancelable = false,
composed = false,
detail = null
}: domTypes.CustomEventInit) {
super({ bubbles, cancelable, composed });
this.detail = detail;
}
}
export class CustomEvent extends event.Event implements domTypes.CustomEvent {
constructor(
type: string,
customEventInitDict: domTypes.CustomEventInit = {}
) {
super(type, customEventInitDict);
const { detail = null } = customEventInitDict;
customEventAttributes.set(this, { detail });
}
// tslint:disable-next-line:no-any
get detail(): any {
return getPrivateValue(this, customEventAttributes, "detail");
}
initCustomEvent(
type: string,
bubbles?: boolean,
cancelable?: boolean,
// tslint:disable-next-line:no-any
detail?: any
) {
if (this.dispatched) {
return;
}
customEventAttributes.set(this, { detail });
}
}
/** Built-in objects providing `get` methods for our
* interceptable JavaScript operations.
*/
Reflect.defineProperty(CustomEvent.prototype, "detail", { enumerable: true });
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