77 lines
2.1 KiB
JavaScript
77 lines
2.1 KiB
JavaScript
/* jslint node: true */
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'use strict';
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const events = require('events');
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const Log = require('./logger.js').log;
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const SystemEvents = require('./system_events.js');
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// deps
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const _ = require('lodash');
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module.exports = new class Events extends events.EventEmitter {
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constructor() {
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super();
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this.setMaxListeners(64); // :TODO: play with this...
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}
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getSystemEvents() {
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return SystemEvents;
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}
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addListener(event, listener) {
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Log.trace( { event : event }, 'Registering event listener');
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return super.addListener(event, listener);
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}
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emit(event, ...args) {
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Log.trace( { event : event }, 'Emitting event');
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return super.emit(event, ...args);
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}
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on(event, listener) {
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Log.trace( { event : event }, 'Registering event listener');
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return super.on(event, listener);
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}
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once(event, listener) {
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Log.trace( { event : event }, 'Registering single use event listener');
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return super.once(event, listener);
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}
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//
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// Listen to multiple events for a single listener.
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// Called with: listener(event, eventName)
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//
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// The returned object must be used with removeMultipleEventListener()
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//
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addMultipleEventListener(events, listener) {
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Log.trace( { events }, 'Registering event listeners');
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const listeners = [];
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events.forEach(eventName => {
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const listenWrapper = _.partial(listener, _, eventName);
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this.on(eventName, listenWrapper);
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listeners.push( { eventName, listenWrapper } );
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});
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return listeners;
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}
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removeMultipleEventListener(listeners) {
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Log.trace( { events }, 'Removing listeners');
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listeners.forEach(listener => {
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this.removeListener(listener.eventName, listener.listenWrapper);
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});
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}
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removeListener(event, listener) {
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Log.trace( { event : event }, 'Removing listener');
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return super.removeListener(event, listener);
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}
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startup(cb) {
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return cb(null);
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}
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};
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