<?php
/**
 * CTheme class file.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @link http://www.yiiframework.com/
 * @copyright Copyright &copy; 2008-2010 Yii Software LLC
 * @license http://www.yiiframework.com/license/
 */

/**
 * CTheme represents an application theme.
 *
 * @author Qiang Xue <qiang.xue@gmail.com>
 * @version $Id: CTheme.php 1678 2010-01-07 21:02:00Z qiang.xue $
 * @package system.web
 * @since 1.0
 */
class CTheme extends CComponent
{
	private $_name;
	private $_basePath;
	private $_baseUrl;

	/**
	 * Constructor.
	 * @param string name of the theme
	 * @param string base theme path
	 * @param string base theme URL
	 */
	public function __construct($name,$basePath,$baseUrl)
	{
		$this->_name=$name;
		$this->_baseUrl=$baseUrl;
		$this->_basePath=$basePath;
	}

	/**
	 * @return string theme name
	 */
	public function getName()
	{
		return $this->_name;
	}

	/**
	 * @return string the relative URL to the theme folder (without ending slash)
	 */
	public function getBaseUrl()
	{
		return $this->_baseUrl;
	}

	/**
	 * @return string the file path to the theme folder
	 */
	public function getBasePath()
	{
		return $this->_basePath;
	}

	/**
	 * @return string the path for controller views. Defaults to 'ThemeRoot/views'.
	 */
	public function getViewPath()
	{
		return $this->_basePath.DIRECTORY_SEPARATOR.'views';
	}

	/**
	 * @return string the path for system views. Defaults to 'ThemeRoot/views/system'.
	 */
	public function getSystemViewPath()
	{
		return $this->getViewPath().DIRECTORY_SEPARATOR.'system';
	}

	/**
	 * @return string the path for widget skins. Defaults to 'ThemeRoot/views/skins'.
	 * @since 1.1
	 */
	public function getSkinPath()
	{
		return $this->getViewPath().DIRECTORY_SEPARATOR.'skins';
	}

	/**
	 * Finds the view file for the specified controller's view.
	 * @param CController the controller
	 * @param string the view name
	 * @return string the view file path. False if the file does not exist.
	 */
	public function getViewFile($controller,$viewName)
	{
		return $controller->resolveViewFile($viewName,$this->getViewPath().'/'.$controller->getUniqueId(),$this->getViewPath());
	}

	/**
	 * Finds the layout file for the specified controller's layout.
	 * @param CController the controller
	 * @param string the layout name
	 * @return string the layout file path. False if the file does not exist.
	 */
	public function getLayoutFile($controller,$layoutName)
	{
		$basePath=$this->getViewPath();
		if(empty($layoutName))
		{
			$module=$controller->getModule();
			while($module!==null)
			{
				if($module->layout===false)
					return false;
				if(!empty($module->layout))
					break;
				$module=$module->getParentModule();
			}
			if($module===null)
				return $controller->resolveViewFile(Yii::app()->layout,$basePath.'/layouts',$basePath);
			else
			{
				$basePath.='/'.$module->getId();
				return $controller->resolveViewFile($module->layout,$basePath.'/layouts',$basePath);
			}
		}
		else
		{
			if(($module=$controller->getModule())!==null)
				$basePath.='/'.$module->getId();
			return $controller->resolveViewFile($layoutName,$basePath.'/layouts',$basePath);
		}
	}
}
