import EventSystem from './EventSystem';


export default class Mouse extends EventSystem{
	constructor(container = window){
		super()
		this.container = container;
	}

	handler(e) {
		switch(e.button){
			case 0:
				this.emit('LeftDown',e);
				break;
			case 2:
				this.emit('RightDown',e);
				break;

			default:
				console.log('sss')
				break;
		}
	}
	dropHandler(event) {
		let data = event.dataTransfer.getData('MyObject');
		this.emit('Drop', {
			event,
			data
		});
	}
	droppable(droppable = true) {
		this.isDroppable = droppable;
		return this;
	}

	cancel(e) { e.preventDefault();	}
	listen(){
		this.container.addEventListener('mousedown', this.handler.bind(this));
		if(this.isDroppable) {
			this.container.addEventListener('dragover', this.cancel);
			this.container.addEventListener('drop', this.dropHandler.bind(this));
		}
		return this;
	}
}