/* -----------------------------------
 *
 * IEvents
 *
 * -------------------------------- */

export type IEvents = Registry;

/* -----------------------------------
 *
 * IEvent
 *
 * -------------------------------- */

export interface IEvent {
   type: string;
   handler: EventListener;
}

/* -----------------------------------
 *
 * IHandler
 *
 * -------------------------------- */

export type IHandler = (ev: Event, el: HTMLElement) => void;

/* -----------------------------------
 *
 * Registry
 *
 * -------------------------------- */

export class Registry {
   private list: IEvent[];

   public constructor() {
      this.list = [];
   }

   public find(ev: string) {
      const { list } = this;

      return list.filter(_ev => _ev.type === ev);
   }

   public add(ev: IEvent) {
      this.list.push(ev);
   }

   public remove(ev: string) {
      const { list } = this;

      this.list = list.filter(_ev => _ev.type !== ev);
   }
}

/* -----------------------------------
 *
 * Function
 *
 * -------------------------------- */

function registry() {
   return new Registry();
}

/* -----------------------------------
 *
 * Export
 *
 * -------------------------------- */

export { registry };