import * as $ from "jquery";
import { Mixin } from "../Mixin";
import * as _util_Observer from "../util/Observer";

export namespace mixin {

    /**
     * Observable Class
     */
    export class Observable extends Mixin {

        public subscribes: Object = {};

        /**
         * The on method is alias for addListener.
         */
        public on(ev: any, callback?: Function, scope?: any) {

            let observer = ev;

            if (typeof ev == "string") {

                let fn = callback || function () { };

                observer = new _util_Observer.util.Observer(ev, fn);

            }

            this.subscribes[observer.name] = this.subscribes[observer.name] || [];
            this.subscribes[observer.name].push(observer);

        }



        /*
                public un(ev: string, callback: Function) {
               //     $(this).unbind(ev, callback);
                }
                */

        public fireEvent(ev: string) {

            let subscribers = this.subscribes[ev] || [];
            let args = Array.prototype.slice.call(arguments, 1);

            args.splice(0, 0, null);

            for (let i = 0; i < subscribers.length; i++) {
                setTimeout(Function.prototype.bind.apply(subscribers[i].fn, args), 0);
            }

        }
    }

}

// EOF