php设计模式 Composite (组合模式)_PHP教程

企鹅博客 2019年7月14日07:53:22 发表评论 233 views
摘要

php设计模式 Composite (组合模式)。复制代码 代码如下: ?php /** * 组合模式 * * 将对象组合成树形结构以表示

复制代码 代码如下:

/**

* 组合模式

*

* 将对象组合成树形结构以表示"部分-整体"的层次结构,使得客户对单个对象和复合对象的使用具有一致性

*/

abstract class MenuComponent

{

public function add($component){}

public function remove($component){}

public function getName(){}

public function getUrl(){}

public function display(){}

}

class Menu extends MenuComponent

{

private $_items = array();

private $_name = null;

public function __construct($name)

{

$this->_name = $name;

}

public function add($component)

{

$this->_items[] = $component;

}

public function remove($component)

{

$key = array_search($component,$this->_items);

if($key !== false) unset($this->_items[$key]);

}

public function display()

{

echo "-- ".$this->_name." ---------

";

foreach($this->_items as $item)

{

$item->display();

}

}

}

class Item extends MenuComponent

{

private $_name = null;

private $_url = null;

public function __construct($name,$url)

{

$this->_name = $name;

$this->_url = $url;

}

public function display()

{

echo $this->_name."#".$this->_url."

";

}

}

class Client

{

private $_menu = null;

public function __construct($menu)

{

$this->_menu = $menu;

}

public function setMenu($menu)

{

$this->_menu = $menu;

}

public function displayMenu()

{

$this->_menu->display();

}

}

// 实例一下

// 创建menu

$subMenu1 = new Menu("sub menu1");

$subMenu2 = new Menu("sub menu2");

$subMenu3 = new Menu("sub menu3");

$item1 = new Item("163","www.163.com");

$item2 = new Item("sina","www.sina.com");

$subMenu1->add($item1);

$subMenu1->add($item2);

$item3 = new Item("baidu","www.baidu.com");

$item4 = new Item("google","www.google.com");

$subMenu2->add($item3);

$subMenu2->add($item4);

$allMenu = new Menu("All Menu");

$allMenu->add($subMenu1);

$allMenu->add($subMenu2);

$allMenu->add($subMenu3);

$objClient = new Client($allMenu);

$objClient->displayMenu();

$objClient->setMenu($subMenu2);

$objClient->displayMenu();

除非注明,否则均为@企鹅博客原创文章,转载必须以链接形式标明本文链接

本文链接:https://www.qieseo.com/311494.html

weinxin
欢迎加入中国SEO站长博客之家
本站的所有资源都会上传分享到博客之家,希望大家互相学习交流进步。
企鹅博客

发表评论

:?: :razz: :sad: :evil: :!: :smile: :oops: :grin: :eek: :shock: :???: :cool: :lol: :mad: :twisted: :roll: :wink: :idea: :arrow: :neutral: :cry: :mrgreen: