playcanvas
Version:
Open-source WebGL/WebGPU 3D engine for the web
48 lines (47 loc) • 1.35 kB
JavaScript
import { ComponentSystem } from "../system.js";
import { ScrollbarComponent } from "./component.js";
const _properties = ["orientation", "value", "handleSize", "handleEntity"];
class ScrollbarComponentSystem extends ComponentSystem {
/**
* Create a new ScrollbarComponentSystem.
*
* @param {AppBase} app - The application.
* @ignore
*/
constructor(app) {
super(app);
this.id = "scrollbar";
this.ComponentType = ScrollbarComponent;
this.on("add", this._onAddComponent, this);
this.on("beforeremove", this.onBeforeRemove, this);
}
initializeComponentData(component, data, properties) {
for (let i = 0; i < _properties.length; i++) {
const property = _properties[i];
if (data.hasOwnProperty(property)) {
component[property] = data[property];
}
}
super.initializeComponentData(component, data);
}
cloneComponent(entity, clone) {
const c = entity.scrollbar;
const data = {
enabled: c.enabled
};
for (let i = 0; i < _properties.length; i++) {
const property = _properties[i];
data[property] = c[property];
}
return this.addComponent(clone, data);
}
_onAddComponent(entity) {
entity.fire("scrollbar:add");
}
onBeforeRemove(entity, component) {
component.onBeforeRemove();
}
}
export {
ScrollbarComponentSystem
};