学习php设计模式 php实现门面模式（Facade）

• 打开录像机
  */
  public function turnOn() {
  echo 'Turning on the camera.
  ';
  }

/**

• 关闭录像机
  */
  public function turnOff() {
  echo 'Turning off the camera.
  ';
  }

/**

• 转到录像机
• @param $degrees
  */
  public function rotate($degrees) {
  echo 'rotating the camera by ',$degrees,' degrees.
  ';
  }
  }

class Light {

/**

• 开灯
  */
  public function turnOn() {
  echo 'Turning on the light.
  ';
  }

/**

• 关灯
  */
  public function turnOff() {
  echo 'Turning off the light.
  ';
  }

/**

• 换灯泡
  */
  public function changeBulb() {
  echo 'changing the light-bulb.
  ';
  }
  }

class Sensor {

/**

• 启动感应器
  */
  public function activate() {
  echo 'Activating the sensor.
  ';
  }

/**

• 关闭感应器
  */
  public function deactivate() {
  echo 'Deactivating the sensor.
  ';
  }

/**

• 触发感应器
  */
  public function trigger() {
  echo 'The sensor has been trigged.
  ';
  }
  }

class Alarm {

/**

• 启动警报器
  */
  public function activate() {
  echo 'Activating the alarm.
  ';
  }

/**

• 关闭警报器
  */
  public function deactivate() {
  echo 'Deactivating the alarm.
  ';
  }

/**

• 拉响警报器
  */
  public function ring() {
  echo 'Ring the alarm.
  ';
  }

/**

• 停掉警报器
  */
  public function stopRing() {
  echo 'Stop the alarm.
  ';
  }
  }

/**

• 门面类
  */
  class SecurityFacade {

/ 录像机 /
private $_camera1,$_camera2;

/ 灯 /
private $_light1,$_light2,$_light3;

/ 感应器 /
private $_sensor;

/ 警报器 /
private $_alarm;

public function __construct() {
$this->_camera1 = new Camera();
$this->_camera2 = new Camera();

$this->_light1 = new Light();
$this->_light2 = new Light();
$this->_light3 = new Light();

$this->_sensor = new Sensor();
$this->_alarm = new Alarm();
}

public function activate() {
$this->_camera1->turnOn();
$this->_camera2->turnOn();

$this->_light1->turnOn();
$this->_light2->turnOn();
$this->_light3->turnOn();

$this->_sensor->activate();
$this->_alarm->activate();
}

public function deactivate() {
$this->_camera1->turnOff();
$this->_camera2->turnOff();

$this->_light1->turnOff();
$this->_light2->turnOff();
$this->_light3->turnOff();

$this->_sensor->deactivate();
$this->_alarm->deactivate();
}
}

/**

• 客户端
  */
  class Client {

private static $_security;
/**

• Main program.
  */
  public static function main() {
  self::$_security = new SecurityFacade();
  self::$_security->activate();
  }
  }

Client::main();
?>