class BasicWidget { /** * @param {AppContext} appContext */ constructor(appContext) { this.appContext = appContext; this.widgetId = `widget-${this.constructor.name}`; } render() { // actual rendering is async const $widget = this.doRender(); // $widget.attr('id', this.widgetId); return $widget; } /** * for overriding */ doRender() {} eventReceived(name, data) { const fun = this[name + 'Listener']; if (typeof fun === 'function') { fun.call(this, data); } } trigger(name, data) { this.appContext.trigger(name, data); } cleanup() {} } export default BasicWidget;