playcanvas/build/playcanvas.prf/src/framework/components/scrollbar/system.js

PlayCanvas WebGL game engine

import { ComponentSystem } from '../system.js';
import { ScrollbarComponent } from './component.js';
import { ScrollbarComponentData } from './data.js';

const _schema = [
		{
				name: 'enabled',
				type: 'boolean'
		},
		{
				name: 'orientation',
				type: 'number'
		},
		{
				name: 'value',
				type: 'number'
		},
		{
				name: 'handleSize',
				type: 'number'
		}
];
class ScrollbarComponentSystem extends ComponentSystem {
		constructor(app){
				super(app);
				this.id = 'scrollbar';
				this.ComponentType = ScrollbarComponent;
				this.DataType = ScrollbarComponentData;
				this.schema = _schema;
				this.on('add', this._onAddComponent, this);
				this.on('beforeremove', this._onRemoveComponent, this);
		}
		initializeComponentData(component, data, properties) {
				super.initializeComponentData(component, data, _schema);
				component.handleEntity = data.handleEntity;
		}
		_onAddComponent(entity) {
				entity.fire('scrollbar:add');
		}
		_onRemoveComponent(entity, component) {
				component.onRemove();
		}
}

export { ScrollbarComponentSystem };