<?php

namespace DesignPattern;

/**
 * Description of FacadeDemo
 *
 * @author jm
 */
class FacadeDemo
{
    //put your code here
    public static function main()
    {
        $computer = new Computer();
        $computer->startup();
        $computer->shutdown();
            
    }
}

class CPU {  
      
    public function startup(){  
        print_r("cpu 启动！\n");  
    }  
      
    public function shutdown(){  
        print_r("cpu 关闭！\n");  
    }  
}  
class Memory {  
      
    public function startup(){  
        print_r("memory 启动！\n");  
    }  
      
    public function shutdown(){  
        print_r("memory 关闭！\n");  
    }  
}  

class Disk {  
      
    public function startup(){  
        print_r("disk 启动！\n");  
    }  
      
    public function shutdown(){  
        print_r("disk 关闭！\n");  
    }  
}  
class Computer {  
    private $_cpu;  
    private $_memory;  
    private $_disk;  
      
    public function __construct(){  
        $this->_cpu = new CPU();  
        $this->_memory = new Memory();  
        $this->_disk = new Disk();  
    }  
      
    public function startup(){  
        print_r("启动电脑！\n");  
        $this->_cpu->startup();  
        $this->_memory->startup();  
        $this->_disk->startup();  
        print_r("启动电脑结束！\n");  
    }  
      
    public function shutdown(){  
        print_r("准备关电脑！\n");  
        $this->_cpu->shutdown();  
        $this->_memory->shutdown();  
        $this->_disk->shutdown();  
        print_r("电脑已关闭！\n");  
    }  
}  

FacadeDemo::main();