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<?php
/**
* CThemeManager class file.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.yiiframework.com/
* @copyright 2008-2013 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
/**
* CThemeManager manages the themes for the Web application.
*
* A theme is a collection of view/layout files and resource files
* (e.g. css, image, js files). When a theme is active, {@link CController}
* will look for the specified view/layout under the theme folder first.
* The corresponding view/layout files will be used if the theme provides them.
* Otherwise, the default view/layout files will be used.
*
* By default, each theme is organized as a directory whose name is the theme name.
* All themes are located under the "WebRootPath/themes" directory.
*
* To activate a theme, set the {@link CWebApplication::setTheme theme} property
* to be the name of that theme.
*
* Since a self-contained theme often contains resource files that are made
* Web accessible, please make sure the view/layout files are protected from Web access.
*
* @property array $themeNames List of available theme names.
* @property string $basePath The base path for all themes. Defaults to "WebRootPath/themes".
* @property string $baseUrl The base URL for all themes. Defaults to "/WebRoot/themes".
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package system.web
* @since 1.0
*/
class CThemeManager extends CApplicationComponent
{
/**
* default themes base path
*/
const DEFAULT_BASEPATH='themes';
/**
* @var string the name of the theme class for representing a theme.
* Defaults to {@link CTheme}. This can also be a class name in dot syntax.
*/
public $themeClass='CTheme';
private $_basePath=null;
private $_baseUrl=null;
/**
* @param string $name name of the theme to be retrieved
* @return CTheme the theme retrieved. Null if the theme does not exist.
*/
public function getTheme($name)
{
$themePath=$this->getBasePath().DIRECTORY_SEPARATOR.$name;
if(is_dir($themePath))
{
$class=Yii::import($this->themeClass, true);
return new $class($name,$themePath,$this->getBaseUrl().'/'.$name);
}
else
return null;
}
/**
* @return array list of available theme names
*/
public function getThemeNames()
{
static $themes;
if($themes===null)
{
$themes=array();
$basePath=$this->getBasePath();
$folder=@opendir($basePath);
while(($file=@readdir($folder))!==false)
{
if($file!=='.' && $file!=='..' && $file!=='.svn' && $file!=='.gitignore' && is_dir($basePath.DIRECTORY_SEPARATOR.$file))
$themes[]=$file;
}
closedir($folder);
sort($themes);
}
return $themes;
}
/**
* @return string the base path for all themes. Defaults to "WebRootPath/themes".
*/
public function getBasePath()
{
if($this->_basePath===null)
$this->setBasePath(dirname(Yii::app()->getRequest()->getScriptFile()).DIRECTORY_SEPARATOR.self::DEFAULT_BASEPATH);
return $this->_basePath;
}
/**
* @param string $value the base path for all themes.
* @throws CException if the base path does not exist
*/
public function setBasePath($value)
{
$this->_basePath=realpath($value);
if($this->_basePath===false || !is_dir($this->_basePath))
throw new CException(Yii::t('yii','Theme directory "{directory}" does not exist.',array('{directory}'=>$value)));
}
/**
* @return string the base URL for all themes. Defaults to "/WebRoot/themes".
*/
public function getBaseUrl()
{
if($this->_baseUrl===null)
$this->_baseUrl=Yii::app()->getBaseUrl().'/'.self::DEFAULT_BASEPATH;
return $this->_baseUrl;
}
/**
* @param string $value the base URL for all themes.
*/
public function setBaseUrl($value)
{
$this->_baseUrl=rtrim($value,'/');
}
}
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