import {
	Vector2
} from '../../../build/three.module.js';

class SelectionHelper {

	constructor( selectionBox, renderer, cssClassName ) {

		this.element = document.createElement( 'div' );
		this.element.classList.add( cssClassName );
		this.element.style.pointerEvents = 'none';

		this.renderer = renderer;

		this.startPoint = new Vector2();
		this.pointTopLeft = new Vector2();
		this.pointBottomRight = new Vector2();

		this.isDown = false;

		this.renderer.domElement.addEventListener( 'pointerdown', function ( event ) {

			this.isDown = true;
			this.onSelectStart( event );

		}.bind( this ) );

		this.renderer.domElement.addEventListener( 'pointermove', function ( event ) {

			if ( this.isDown ) {

				this.onSelectMove( event );

			}

		}.bind( this ) );

		this.renderer.domElement.addEventListener( 'pointerup', function ( event ) {

			this.isDown = false;
			this.onSelectOver( event );

		}.bind( this ) );

	}

	onSelectStart( event ) {

		this.renderer.domElement.parentElement.appendChild( this.element );

		this.element.style.left = event.clientX + 'px';
		this.element.style.top = event.clientY + 'px';
		this.element.style.width = '0px';
		this.element.style.height = '0px';

		this.startPoint.x = event.clientX;
		this.startPoint.y = event.clientY;

	}

	onSelectMove( event ) {

		this.pointBottomRight.x = Math.max( this.startPoint.x, event.clientX );
		this.pointBottomRight.y = Math.max( this.startPoint.y, event.clientY );
		this.pointTopLeft.x = Math.min( this.startPoint.x, event.clientX );
		this.pointTopLeft.y = Math.min( this.startPoint.y, event.clientY );

		this.element.style.left = this.pointTopLeft.x + 'px';
		this.element.style.top = this.pointTopLeft.y + 'px';
		this.element.style.width = ( this.pointBottomRight.x - this.pointTopLeft.x ) + 'px';
		this.element.style.height = ( this.pointBottomRight.y - this.pointTopLeft.y ) + 'px';

	}

	onSelectOver() {

		this.element.parentElement.removeChild( this.element );

	}

}

export { SelectionHelper };

@@ -454,60 +454,26 @@
 his.
-render
+point
 er
-.
 do
-mElement.addEventListener( 'pointerdown',
+wnEvent =
  fun
@@ -553,34 +553,32 @@
 %0A%0A%09%09%7D.bind( this
- )
  );%0A%0A%09%09this.rend
@@ -577,47 +577,8 @@
 his.
-renderer.domElement.addEventListener( '
 poin
@@ -584,18 +584,23 @@
 ntermove
-',
+Event =
  functio
@@ -698,165 +698,649 @@
 is )
- );%0A%0A%09%09this.renderer.domElement.addEventListener( 'pointerup', function ( event 
+;%0A%0A%09%09this.pointerupEvent = function ( ) %7B%0A%0A%09%09%09this.isDown = false;%0A%09%09%09this.onSelectOver();%0A%0A%09%09%7D.bind( this );%0A%0A%09%09this.renderer.domElement.addEventListener( 'pointerdown', this.pointerdownEvent );%0A%0A%09%09this.renderer.domElement.addEventListener( 'pointermove', this.pointermoveEvent );%0A%0A%09%09this.renderer.domElement.addEventListener( 'pointerup', this.pointerupEvent );%0A%0A%09%7D%0A%0A%09dispose(
 ) %7B%0A%0A
-%09
 %09%09this.
-isDown = false;%0A%09
+renderer.domElement.removeEventListener( 'pointerdown', this.pointerdownEvent );%0A%0A
 %09%09this.
-onSelectOver( event );%0A%0A%09%09%7D.bind( this )
+renderer.domElement.removeEventListener( 'pointermove', this.pointermoveEvent );%0A%0A%09%09this.renderer.domElement.removeEventListener( 'pointerup', this.pointerupEvent
  );%0A

add dispose() for SelectionHelper (#22977)