controller.js

import { Mixin } from "ember-metal/mixin";
import alias from 'ember-metal/alias';
import ActionHandler from "ember-runtime/mixins/action_handler";
import ControllerContentModelAliasDeprecation from "ember-runtime/mixins/controller_content_model_alias_deprecation";

/**
  `Ember.ControllerMixin` provides a standard interface for all classes that
  compose Ember's controller layer: `Ember.Controller`,
  `Ember.ArrayController`, and `Ember.ObjectController`.

  @class ControllerMixin
  @namespace Ember
  @uses Ember.ActionHandler
  @private
*/
export default Mixin.create(ActionHandler, ControllerContentModelAliasDeprecation, {
  /* ducktype as a controller */
  isController: true,

  /**
    The object to which actions from the view should be sent.

    For example, when a Handlebars template uses the `{{action}}` helper,
    it will attempt to send the action to the view's controller's `target`.

    By default, the value of the target property is set to the router, and
    is injected when a controller is instantiated. This injection is defined
    in Ember.Application#buildContainer, and is applied as part of the
    applications initialization process. It can also be set after a controller
    has been instantiated, for instance when using the render helper in a
    template, or when a controller is used as an `itemController`. In most
    cases the `target` property will automatically be set to the logical
    consumer of actions for the controller.

    @property target
    @default null
    @private
  */
  target: null,

  container: null,

  parentController: null,

  store: null,

  /**
    The controller's current model. When retrieving or modifying a controller's
    model, this property should be used instead of the `content` property.

    @property model
    @public
   */
  model: null,

  /**
    @private
  */
  content: alias('model')

});