"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var UserModel = /** @class */ (function () {
    function UserModel() {
        /**
      * @type {Observer[]} List of subscribers. In real life, the list of
      * subscribers can be stored more comprehensively (categorized by event
      * type, etc.).
      */
        this.observers = [];
        this.state = 0;
    }
    /**
     * The subscription management methods.
     */
    UserModel.prototype.attach = function (observer) {
        console.log('Subject: Attached an observer.');
        this.observers.push(observer);
    };
    UserModel.prototype.detach = function (observer) {
        var observerIndex = this.observers.indexOf(observer);
        this.observers.splice(observerIndex, 1);
        console.log('Subject: Detached an observer.');
    };
    /**
     * Trigger an update in each subscriber.
     */
    UserModel.prototype.notify = function () {
        console.log('Subject: Notifying observers...');
        for (var _i = 0, _a = this.observers; _i < _a.length; _i++) {
            var observer = _a[_i];
            observer.update(this.state);
        }
    };
    UserModel.prototype.someBusinessMethod = function () {
        console.log("Subject: My state has just changed to: " + this.state);
        this.notify();
    };
    return UserModel;
}());
exports.UserModel = UserModel;