theatre-events/dist/current/src/event-dispatcher/synchronous-event-dispatcher.js

A full implementation of a standard event dispatcher for javascript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var event_listener_1 = require("./../event-listener");
/**
 * Dispatch events synchronously through your application.
 */
var SynchronousEventDispatcher = (function () {
    function SynchronousEventDispatcher() {
        this.eventListeners = new Map();
    }
    /**
     * {@inheritdoc}
     */
    SynchronousEventDispatcher.prototype.dispatch = function (name, payload) {
        var _this = this;
        if (!this.eventListeners.has(name)) {
            return payload;
        }
        var priorities = [];
        this.eventListeners.get(name).forEach(function (l, priority) {
            priorities.push(priority);
        });
        priorities.sort().map(function (priority) {
            _this.eventListeners.get(name).get(priority).map(function (l) { return l(payload); });
        });
        return payload;
    };
    /**
     * {@inheritdoc}
     */
    SynchronousEventDispatcher.prototype.addEventListener = function (name, listener) {
        listener.priority = listener.priority || event_listener_1.NORMAL_PRIORITY;
        if (!this.eventListeners.has(name)) {
            this.eventListeners.set(name, new Map());
        }
        if (!this.eventListeners.get(name).has(listener.priority)) {
            this.eventListeners.get(name).set(listener.priority, []);
        }
        this.eventListeners.get(name).get(listener.priority).push(listener);
    };
    /**
     * {@inheritdoc}
     */
    SynchronousEventDispatcher.prototype.removeEventListener = function (name, listener) {
        var _this = this;
        if (!this.eventListeners.has(name)) {
            return;
        }
        this.eventListeners.get(name).forEach(function (listeners, index) {
            listeners.map(function (registeredListener, i) {
                if (registeredListener !== listener) {
                    return;
                }
                listeners.splice(i, 1);
            });
            if (!listeners.length) {
                _this.eventListeners.get(name).delete(index);
            }
        });
        if (!this.eventListeners.get(name).size) {
            this.eventListeners.delete(name);
        }
    };
    /**
     * {@inheritdoc}
     */
    SynchronousEventDispatcher.prototype.clearEventListeners = function (name) {
        if (!name) {
            this.eventListeners.clear();
            return;
        }
        if (!this.eventListeners.has(name)) {
            return;
        }
        this.eventListeners.get(name).clear();
    };
    return SynchronousEventDispatcher;
}());
exports.default = SynchronousEventDispatcher;
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