@animech-public/playcanvas/build/playcanvas.dbg/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'
}];

/**
 * Manages creation of {@link ScrollbarComponent}s.
 *
 * @category User Interface
 */
class ScrollbarComponentSystem extends ComponentSystem {
  /**
   * Create a new ScrollbarComponentSystem.
   *
   * @param {import('../../app-base.js').AppBase} app - The application.
   * @ignore
   */
  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 };