public function testMemento()
{
$originator = new Originator();
$originator->setState("On");
$this->assertEquals("On", $originator->getState());
$memento = $originator->createMemento();
$this->assertInstanceOf('Behavioral\\Memento\\Memento', $memento);
$caretaker = new Caretaker();
$caretaker->setMemento($memento);
$originator->setState('Off');
$this->assertEquals("Off", $originator->getState());
$memento = $caretaker->getMemento();
$this->assertInstanceOf('Behavioral\\Memento\\Memento', $memento);
$originator->restore($memento);
$this->assertEquals("On", $originator->getState());
}
public function runCustomLogic()
{
$originator = new Originator();
//Setting state to State1
$originator->setState('State1');
//Setting state to State2
$originator->setState('State2');
//Saving State2 to Memento
$this->saveToHistory($originator->getStateAsMemento());
//Setting state to State3
$originator->setState('State3');
// We can request multiple mementos, and choose which one to roll back to.
// Saving State3 to Memento
$this->saveToHistory($originator->getStateAsMemento());
//Setting state to State4
$originator->setState('State4');
$originator->restoreFromMemento($this->getFromHistory(1));
//State after restoring from Memento: State3
return $originator->getStateAsMemento()->getState();
}
public static function run()
{
/* @var $savedStates Memento[] */
$savedStates = array();
$originator = new Originator();
//Setting state to State1
$originator->setState("State1");
//Setting state to State2
$originator->setState("State2");
//Saving State2 to Memento
$savedStates[] = $originator->saveToMemento();
//Setting state to State3
$originator->setState("State3");
// We can request multiple mementos, and choose which one to roll back to.
// Saving State3 to Memento
$savedStates[] = $originator->saveToMemento();
//Setting state to State4
$originator->setState("State4");
$originator->restoreFromMemento($savedStates[1]);
//State after restoring from Memento: State3
}
private $_state = null;
public function getState()
{
return $this->_state;
}
public function setState($state)
{
$this->_state = $state;
}
public function createMemento()
{
return new Memento($this->_state);
}
public function setMemento($memento)
{
$this->_state = $memento->getState();
}
public function display()
{
echo "state = " . $this->_state . "<br/>";
}
}
$objOriginator = new Originator();
$objOriginator->setState(0);
$objOriginator->display();
$objCareTaker = new CareTaker();
$objCareTaker->setMemento($objOriginator->createMemento());
$objOriginator->setState(1);
$objOriginator->display();
$objOriginator->setMemento($objCareTaker->getMemento());
$objOriginator->display();
{
// 负责人(Caretaker)角色
private $_memento;
public function getMemento()
{
return $this->_memento;
}
public function setMemento(Memento $memento)
{
$this->_memento = $memento;
}
}
// client
/* 创建目标对象 */
$org = new Originator();
$org->setState('open');
$org->showState();
/* 创建备忘 */
$memento = $org->createMemento();
/* 通过Caretaker保存此备忘 */
$caretaker = new Caretaker();
$caretaker->setMemento($memento);
/* 改变目标对象的状态 */
$org->setState('close');
$org->showState();
$org->restoreMemento($memento);
$org->showState();
/* 改变目标对象的状态 */
$org->setState('close');
$org->showState();
/* 还原操作 */
public static function main()
{
//创建目标对象
$orig = new Originator();
$orig->setState('open');
$orig->showState();
//创建备忘
$memento = $orig->createMemento();
//通过Caretaker保存此备忘
$caretaker = new Caretaker();
$caretaker->setMemento($memento);
//改变目标对象的状态
$orig->setState('close');
$orig->showState();
//还原操作
$orig->restoreMemento($caretaker->getMemento());
$orig->showState();
}
public function __construct()
{
$this->first = 'first';
$this->second = 'second';
$this->ct = new Caretaker();
$this->orig = new Originator();
$this->orig->setState($this->first);
$this->ct->addMemento($this->orig->createMemento());
$this->orig->setState($this->second);
$this->ct->addMemento($this->orig->createMemento());
$this->orig->setMemento($this->ct->getMemento(1));
echo $this->orig->state;
}
/*
* 管理员
*/
class caretaker
{
private $_mememto;
public function setMemento($memento)
{
$this->_mememto = $memento;
}
public function getMemento()
{
return $this->_mememto;
}
}
//客户端代码
//备份前的状态
$originator = new Originator();
$originator->setState('on');
$originator->showState();
//创建备忘录
$memento = $originator->createMemento();
//通过管理员保存此状态
$caretaker = new caretaker();
$caretaker->setMemento($memento);
//改变目前对象的状态
$originator->setState('off');
$originator->showState();
//还原操作
$originator->restoreMemento($caretaker->getMemento());
$originator->showState();