@deepkit/core
Version:
Deepkit core library
70 lines • 2.47 kB
JavaScript
;
/*
* Deepkit Framework
* Copyright (C) 2021 Deepkit UG, Marc J. Schmidt
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the MIT License.
*
* You should have received a copy of the MIT License along with this program.
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.AsyncEventEmitter = exports.AsyncEmitterEvent = exports.__ΩAsyncEventSubscription = void 0;
const array_js_1 = require("./array.js");
const __ΩAsyncSubscriber = ['T', 'event', '', 'b!Pe"!2"P$`$J/#'];
const __ΩAsyncEventSubscription = ['', 'unsubscribe', 'PP$/!4"M'];
exports.__ΩAsyncEventSubscription = __ΩAsyncEventSubscription;
let asyncId = 0;
class AsyncEmitterEvent {
constructor() {
this.id = asyncId++;
this.stopped = false;
this.propagationStopped = false;
}
/**
* Stop propagating the event to subsequent event listeners.
*/
stopPropagation() {
this.propagationStopped = true;
}
/**
* Signal the emitter that you want to abort.
* Subsequent event listeners will still be called.
*/
stop() {
this.stopped = true;
}
}
exports.AsyncEmitterEvent = AsyncEmitterEvent;
AsyncEmitterEvent.__type = ['stopPropagation', 'stop', 'P"0!P"0"5'];
class AsyncEventEmitter {
constructor(parent) {
this.parent = parent;
this.subscribers = [];
}
subscribe(callback) {
this.subscribers.push(callback);
return {
unsubscribe: () => {
(0, array_js_1.arrayRemoveItem)(this.subscribers, callback);
}
};
}
async emit(event) {
if (this.parent)
await this.parent.emit(event);
if (event.propagationStopped)
return;
for (const subscriber of this.subscribers) {
await subscriber(event);
if (event.propagationStopped)
return;
}
}
hasSubscriptions() {
return this.subscribers.length > 0;
}
}
exports.AsyncEventEmitter = AsyncEventEmitter;
AsyncEventEmitter.__type = ['T', () => __ΩAsyncSubscriber, 'subscribers', function () { return []; }, () => AsyncEventEmitter, 'parent', 'constructor', () => __ΩAsyncSubscriber, 'callback', () => __ΩAsyncEventSubscription, 'subscribe', 'event', 'emit', 'hasSubscriptions', 'b!e!!o""F3#<>$PP"7%2&8<"0\'Pe"!o("2)n*0+Pe"!2,$`0-P)0.5'];
//# sourceMappingURL=emitter.js.map