<?php

/**

 * Menu class: Generates the menu by XML.

 *

 * @package Bengine

 * @copyright Copyright protected by / Urheberrechtlich geschützt durch "Sebastian Noll" <snoll@4ym.org>

 * @version $Id: Menu.php 8 2010-10-17 20:55:04Z secretchampion $

 */



class Bengine_Game_Menu implements IteratorAggregate

{

	/**

	 * Holds the menu items.

	 *

	 * @var array

	 */

	protected $menu = array();



	/**

	 * @var array

	 */

	protected $data = array();



	/**

	 * Constructor.

	 *

	 * @return \Bengine_Game_Menu

	 */

	public function __construct()

	{

		$meta = Game::getMeta();

		$this->setData($meta["config"]["menu"]);

		$this->generateMenu();

	}



	/**

	 * Generates the menu items.

	 *

	 * @return Bengine_Game_Menu

	 */

	protected function generateMenu()

	{

		$this->menu = array();

		uasort($this->data, array($this, "sort"));

		foreach($this->data as $first)

		{

			uasort($first["items"], array($this, "sort"));

			$subMenu = array();

			foreach($first["items"] as $second)

			{

				$subMenu[] = array(

					"attributes" => isset($second["attributes"]) ? $this->getHtmlAttributesFromArray($second["attributes"]) : "",

					"link" => $this->getLink($second)

				);

			}

			$this->menu[] = array(

				"attributes" => isset($first["attributes"]) ? $this->getHtmlAttributesFromArray($first["attributes"]) : "",

				"link" => isset($first["label"]) ? $this->getLabel($first["label"]) : "",

				"children" => $subMenu

			);

		}

		Hook::event("GenerateMenu", array(&$this->menu, $this));

		return $this;

	}



	/**

	 * @param array $x

	 * @param array $y

	 * @return bool

	 */

	protected function sort(array $x, array $y)

	{

		if(!isset($x["sort"]))

		{

			return -1;

		}

		if(!isset($y["sort"]))

		{

			return 1;

		}

		return $x["sort"] < $y["sort"] ? -1 : 1;

	}



	/**

	 * Generates the label of a menu item.

	 *

	 * @param array|string $labelConfig

	 * @return string

	 */

	protected function getLabel($labelConfig)

	{

		if(is_array($labelConfig))

		{

			if(isset($labelConfig["special"]))

			{

				$params = isset($labelConfig["special"]["params"]) ? $labelConfig["special"]["params"] : null;

				$label = $this->func($labelConfig["special"]["function"], $params);

			}

			else

			{

				$label = isset($labelConfig["value"]) ? $labelConfig["value"] : "";

				if(!empty($item["label"]["noLangVar"]))

				{

					$label = Core::getLang()->get($label);

				}

			}

		}

		else

		{

			$label = Core::getLang()->get($labelConfig);

		}

		return $label;

	}



	/**

	 * Generates a link from XML element.

	 *

	 * @param array $item

	 * @throws Recipe_Exception_Generic

	 * @return string

	 */

	protected function getLink(array $item)

	{

		$title = "";

		$class = "";

		$attachments = "";

		if(isset($item["link"]["attributes"]))

		{

			if(isset($item["link"]["attributes"]["title"]))

			{

				$title = $item["link"]["attributes"]["title"];

				unset($item["link"]["attributes"]["title"]);

			}

			if(isset($item["link"]["attributes"]["class"]))

			{

				$class = $item["link"]["attributes"]["class"];

				unset($item["link"]["attributes"]["class"]);

			}

			$attachments = $this->getHtmlAttributesFromArray($item["link"]["attributes"]);

		}

		$name = $this->getLabel($item["label"]);

		$refdir = isset($item["link"]["external"]) ? $item["link"]["external"] : false;

		if(!is_array($item["link"]))

		{

			throw new Recipe_Exception_Generic("Menu link must be an array.");

		}

		if(isset($item["link"]["href"]))

		{

			$link = $item["link"]["href"];

		}

		else

		{

			$package = isset($item["link"]["package"]) ? $item["link"]["package"] : "game";

			$controller = $item["link"]["controller"];

			$action = isset($item["link"]["action"]) ? "/".$item["link"]["action"] : "";

			$link = $package."/".SID."/".$controller.$action;

		}

		return Link::get($link, $name, $title, $class, $attachments, false, false, $refdir);

	}



	/**

	 * Returns the menu items.

	 *

	 * @return array

	 */

	public function getMenu()

	{

		if($this->menu === null)

		{

			$this->generateMenu();

		}

		return $this->menu;

	}



	/**

	 * @param string $function

	 * @param string $param

	 *

	 * @return string

	 */

	protected function func($function, $param = null)

	{

		$function = strtolower($function);

		switch($function)

		{

			case "version":

				return "v".Game::getVersion();

			break;

			case "const":

				return constant($param);

			break;

			case "config":

				return Core::getConfig()->get($param);

			break;

			case "user":

				return Core::getUser()->get($param);

			break;

			case "cookie":

				return Core::getRequest()->getCOOKIE($param);

			break;

			case "image":

				return Image::getImage($param, "");

			break;

			case "callback":

				return call_user_func_array($param["function"], $param["arguments"]);

			break;

		}

		return "";

	}



	/**

	 * Retrieves an external iterator.

	 *

	 * @return ArrayIterator

	 */

	public function getIterator()

	{

		return new ArrayIterator($this->getMenu());

	}



	/**

	 * @param array $data

	 */

	public function setData(array $data)

	{

		$this->data = $data;

	}



	/**

	 * @return array

	 */

	public function getData()

	{

		return $this->data;

	}



	/**

	 * @param array $assoc

	 * @return string

	 */

	protected function getHtmlAttributesFromArray(array $assoc)

	{

		$attributes = array();

		foreach($assoc as $attribute => $value)

		{

			$attributes[] = "$attribute=\"$value\"";

		}

		return " ".implode(" ", $attributes);

	}

}

?>