devextreme
Version:
JavaScript/TypeScript Component Suite for Responsive Web Development
51 lines (50 loc) • 1.41 kB
JavaScript
/**
* DevExtreme (esm/__internal/viz/vector_map/event_emitter.js)
* Version: 25.2.5
* Build date: Fri Feb 20 2026
*
* Copyright (c) 2012 - 2026 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import Callbacks from "../../../core/utils/callbacks";
const eventEmitterMethods = {
_initEvents() {
const names = this._eventNames;
let i;
const ii = names.length;
const events = this._events = {};
for (i = 0; i < ii; ++i) {
events[names[i]] = Callbacks()
}
},
_disposeEvents() {
const events = this._events;
let name;
for (name in events) {
events[name].empty()
}
this._events = null
},
on(handlers) {
const events = this._events;
let name;
for (name in handlers) {
events[name].add(handlers[name])
}
return function() {
for (name in handlers) {
events[name].remove(handlers[name])
}
}
},
_fire(name, arg) {
this._events[name].fire(arg)
}
};
export function makeEventEmitter(target) {
const proto = target.prototype;
let name;
for (name in eventEmitterMethods) {
proto[name] = eventEmitterMethods[name]
}
}