import {Directive, Input} from '@angular/core';
import {ScrollerContentOptions} from 'primeng/scroller';

interface CoolScrollerContentOptions<T extends object> extends ScrollerContentOptions {
  items?: T[];
}

interface TableRowTemplateContext<T extends object> {
  $implicit: T;
  options: CoolScrollerContentOptions<T>;
}

@Directive({
  selector: 'ng-template[appVirtualScroll]'
})
export class VirtualScrollDirective<T extends object>{

  @Input('appVirtualScroll') items!: T[];

  static ngTemplateContextGuard<E extends object>(
    _dir: VirtualScrollDirective<E>,
    _ctx: unknown
  ): _ctx is TableRowTemplateContext<E> {
    return true;
  }
}