<?php

/**

 * Created by PhpStorm.

 * Date: 2016/5/25

 * Time: 15:23

 */

namespace vendor\animal;

use \yii\base\Component;//组件

use \yii\base\Event;//

class myEvent extends Event{

    public $message;

}

class Cat extends Component{

    public function shout(){

        echo "miao miao miao<br>";

        //$this->trigger('miao');//事件命名

        $me = new myEvent();

        $me->message = "hello my Event<br>";

        $this->trigger('miao',$me);

    }

}

<?php

/**

 * Created by PhpStorm.

 * Date: 2016/5/25

 * Time: 17:00

 */

namespace vendor\animal;

use frontend\behaviors\behavior1;

use yii\base\Component;//让一个类拥有接收行为的能力

class Dog extends  Component{

    public function behaviors(){

        return [

            Behavior1::className(),

        ];

    }

    public function look()

    {

       echo "I am looking!<br>";

    }

}

<?php

/**

 * Created by PhpStorm.

 * Date: 2016/5/25

 * Time: 15:23

 */

namespace vendor\animal;

class Mouse{

    public function run($e)

    {

        echo $e->message;

        echo "I am running!<br>";

    }

}

<?php

/**

 * Created by PhpStorm.

 * Date: 2016/5/25

 * Time: 15:27

 */

//YII事件绑定

namespace frontend\controllers;

use yii;

use yii\web\Controller;

use vendor\animal\Cat;

use vendor\animal\Mouse;

use vendor\animal\Dog;

use \yii\base\Event;//类级别的事件绑定必须

use frontend\behaviors\Behavior1;//对象的混合

class AnimalController extends Controller{

    public function actionIndex(){

        $cat = new Cat();

        $mouse = new Mouse();

        $dog = new Dog();

        //对象级别的事件绑定

        $cat->on('miao',[$mouse,'run']);

        $cat->on('miao',[$dog,'look']);

//

//        $cat->off('miao',[$dog,'look']);//取消关注

        //类级别的事件绑定

//        Event::on(Cat::className(),'miao',[$mouse,'run']);//所有的老鼠都会监听这个miao事件

//        Event::on(Cat::className(),'miao',function(){

//            echo "miao event has triggerd!<br>";

//        });

        $cat->shout();

        //\Yii::$app是YII实现的单例模式

//        Yii::$app->on(\yii\base\Application::EVENT_AFTER_REQUEST,function(){

//            echo "event after request";

//        });

    }

    public function actionBehavior()//类的混合

    {

        /*板块1

         * $dog = new Dog();

        $dog->look();

        $dog->eat();*/

        $dog=new Dog();

        $dog->trigger("wang");

    }

    public function actionObject()//对象的混合

    {

        $dog = new Dog();

        $behavior1 = new Behavior1();

        $dog->attachBehavior('beh1',$behavior1);//取个别名，防止冲突

        //$dog->detachBehavior('beh1');//移除对象

        $dog->eat();

    }

}