var merge = require('react/lib/merge');
var EventEmitter = require('events').EventEmitter;

var _state = {};
var _EVENT_CHANGE = 'testing:change';

module.exports = merge(EventEmitter.prototype, {
  get: function(name) {
    return name ? _state[name] : _state;
  },
  set: function(name, value) {
    _state[name] = value;
    var arg = {};
    arg[name] = value;
    this.emitChange(arg);
  },
  addChangeListener: function(callback) {
    this.on(_EVENT_CHANGE, callback);
  },
  removeChangeListener: function(callback) {
    this.removeListener(_EVENT_CHANGE, callback);
  },
  emitChange: function(arg) {
    this.emit(_EVENT_CHANGE, arg);
  }
});