高端品牌网站建设方案/安卓内核级优化神器

####状态设计模式

• 状态模式的作用是允许对象在状态改变时改变其行为
• 对象中频繁的状态非常依赖于条件语句,就自身来说条件语句并没有什么问题,不过,如果选项太多,以至于程序出现混乱,或者增加或改变选项需要太多的是时间。

<?php
/*** Created by PhpStorm.* User: gewenrui* Date: 16/3/12* Time: 下午3:57*/
header("Content-type: text/html; charset=utf-8");
class Context{private $offState;private $onState;private $brighterState;private $brightestState;private $currentState;public function  __construct(){$this->offState = new OffState($this);$this->onState = new Onstate($this);$this->brighterState = new BrighterState($this);$this->brightestState = new BrightestState($this);$this->currentState = $this->offState;}public function  turnOnLight(){$this->currentState->turnLightOn();}public function turnOffLight(){$this->currentState->turnLightOff();}public function turnBrighter(){$this->currentState->turnBrighter();}public function turnBrightest(){$this->currentState->turnBrightest();}public function setState(IState $state){$this->currentState = $state;}public function getOnState(){return $this->onState;}public function getOffState(){return $this->offState;}public function getBrighterState(){return $this->brighterState;}public function getBrightestState(){return $this->brightestState;}}
interface IState{public function turnLightOn();public function turnLightOff();public function turnBrighter();public function turnBrightest();
}class Onstate implements IState{private $context;public function __construct(Context $contextNew){$this->context = $contextNew;}public function turnLightOff(){echo "Lights off"."</br>";$this->context->setState($this->context->getOffState());}public function turnLightOn(){echo "Light is already on there is no action"."</br>";}public function turnBrighter(){echo "turn 明亮"."</br>";}public function turnBrightest(){echo "turn 最亮"."</br>";}
}
class OffState implements IState{private $context;public function __construct(Context $contextNew){$this->context = $contextNew;}public function turnLightOn(){echo "Lights On Now i can see"."</br>";$this->context->setState($this->context->getOnState());}public function turnLightOff(){echo "Light is already off"."</br>";}public function turnBrightest(){echo "turn 最亮"."</br>";}public function turnBrighter(){echo "turn 较亮"."</br>";}}
class BrighterState implements IState{private $context;public function __construct(Context $contextNow){$this->context = $contextNow;}public function turnBrighter(){echo "变暗了";}public function turnBrightest(){$this->context->setState($this->context->getBrighterState());}public function turnLightOff(){echo "关灯了";}public function turnLightOn(){echo "灯是亮的";}
}
class BrightestState implements IState{private $context;public function __construct(Context $contextNow){$this->context = $contextNow;}public function turnLightOff(){$this->context->setState($this->context->getOffState());}public function turnBrightest(){echo "this is brightest"."</br>";}public function turnBrighter(){echo "this is a little 暗淡"."</br>";}public function turnLightOn(){echo "there is no use"."</br>";}
}
class Client{private $context;public function __construct(){$this->context = new Context();$this->context->turnOnLight();$this->context->turnOnLight();$this->context->turnOffLight();$this->context->turnOffLight();$this->context->turnOnLight();$this->context->turnBrighter();$this->context->turnBrightest();$this->context->turnOffLight();}
}$data = new Client();