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class _domEventsHandler { constructor() { this.events = {} } attachEvent (object, event, callback) { var k = this, dispatch = function (b) { callback.call(object, k.getEvent(b)) }; object.attachEvent("on" + event, dispatch); return dispatch }; unlisten(eventName) { var presentEvent; this.events[eventName] && (presentEvent = this.events[eventName], this.events[eventName] = null, this.removeEventHandler(presentEvent.element, presentEvent.eventName, presentEvent.eventListener)); } listen(object, event, callback, eventName) { var presentEvent; if (eventName) { this.events[eventName] && (presentEvent = this.events[eventName], this.events[eventName] = null, this.removeEventHandler(presentEvent.element, presentEvent.eventName, presentEvent.eventListener)); if (object.addEventListener) { object.addEventListener(event, callback, !1); } else if (document.attachEvent) { callback = this.attachEvent(object, event, callback); } else { return null; } this.events[eventName] = {element: object, eventName: event, eventListener: callback}; return callback } }; removeEventHandler(object, event, listener) { document.removeEventListener ? object.removeEventListener(event, listener, !1) : object.detachEvent("on" + event, listener) }; getEvent(event) { var eventInstance = event || _this.event; if (!eventInstance) { for (event = this.getEvent.caller; event && (!(eventInstance = event.arguments[0]) || Event != eventInstance.constructor);) { event = event.caller }; } return eventInstance }; } const domEventsHandler = new _domEventsHandler(); export { domEventsHandler };
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