/**
 * 广播
 *
 * Created by GUY on 2015/12/23.
 * @class
 */
import { Controller } from "./0.controller";
export class BroadcastController extends Controller {
    init() {
        this._broadcasts = {};
    }

    on(name, fn) {
        if (!this._broadcasts[name]) {
            this._broadcasts[name] = [];
        }
        this._broadcasts[name].push(fn);
        return () => this.remove(name, fn);
    }

    send(name) {
        const args = [].slice.call(arguments, 1);
        BI.each(this._broadcasts[name], (i, fn) => fn.apply(null, args));
    }

    remove(name, fn) {
        if (fn) {
            BI.remove(this._broadcasts[name], (index, cb) => fn === cb);
            if (this._broadcasts[name].length === 0) {
                delete this._broadcasts[name];
            }
        } else {
            delete this._broadcasts[name];
        }
        return this;
    }
}