Added theme support.

1 files changed, 132 insertions, 28 deletions

diff --git a/framework/Web/UI/TTheme.php b/framework/Web/UI/TTheme.php
index 3d4d4e5d..452c473c 100644
--- a/framework/Web/UI/TTheme.php
+++ b/framework/Web/UI/TTheme.php
@@ -1,46 +1,129 @@
 <?php

 

-class TTheme extends TComponent

+class TThemeManager extends TComponent implements IModule

 {

-	private $_themePath;

-	private $_skins=array();

+	const THEME_CACHE_PREFIX='prado:theme:';

+	const DEFAULT_THEME_PATH='themes';

+	const THEME_FILE='theme.tpl';

+	/**

+	 * @var string module ID

+	 */

+	private $_id;

+	/**

+	 * @var boolean whether this module has been initialized

+	 */

+	private $_initialized=false;

+	/**

+	 * @var string the directory containing all themes

+	 */

+	private $_themePath=null;

+	/**

+	 * @var IApplication application

+	 */

+	private $_application;

 

-	public function __construct($name)

+	/**

+	 * Initializes the module.

+	 * This method is required by IModule and is invoked by application.

+	 * @param IApplication application

+	 * @param TXmlElement module configuration

+	 */

+	public function init($application,$config)

 	{

-		$this->_themePath=$name;

-		$this->initialize();

+		$this->_application=$application;

+		if($this->_themePath===null)

+			$this->_themePath=dirname($application->getConfigurationFile()).'/'.self::DEFAULT_THEME_PATH;

+

+		$this->_initialized=true;

 	}

 

-	private function initialize()

+	/**

+	 * @return string id of this module

+	 */

+	public function getID()

 	{

-		if(($theme=opendir($this->_themePath))===false)

-			throw new Exception("Invalid theme ".$this->_themePath);

-		while(($file=readdir($theme))!==false)

+		return $this->_id;

+	}

+

+	/**

+	 * @param string id of this module

+	 */

+	public function setID($value)

+	{

+		$this->_id=$value;

+	}

+

+	public function getTheme($name)

+	{

+		$themePath=realpath($this->_themePath.'/'.$name);

+		if($themePath===false || !is_dir($this->_themePath))

+			throw new TConfigurationException('thememanager_themepath_invalid',$themePath);

+		if(($cache=$this->_application->getCache())===null)

+			return new TTheme($themePath.'/'.self::THEME_FILE);

+		else

 		{

-			if(basename($file,'.skin')!==$file)

-				$this->parseSkinFile($this->_themePath.'/'.$file);

+			$themeFile=$themePath.'/'.self::THEME_FILE;

+			$array=$cache->get(self::THEME_CACHE_PREFIX.$themePath);

+			if(is_array($array))

+			{

+				list($theme,$timestamp)=$array;

+				if(filemtime($themeFile)<$timestamp)

+					return $theme;

+			}

+			$theme=new TTheme($themeFile);

+			$cache->set(self::THEME_CACHE_PREFIX.$themePath,array($theme,time()));

+			return $theme;

 		}

-		closedir($theme);

 	}

 

-	private function parseSkinFile($fileName)

+	public function getThemePath()

 	{

-		if(($skin=simplexml_load_file($fileName))===false)

-			throw new Exception("Parsing $fileName failed.");

-		foreach($skin->children() as $type=>$control)

+		return $this->_themePath;

+	}

+

+	public function setThemePath($value)

+	{

+		if($this->_initialized)

+			throw new TInvalidOperationException('thememanager_themepath_unchangeable');

+		else

+			$this->_themePath=$value;

+	}

+}

+

+class TTheme extends TTemplate

+{

+	private $_themePath;

+	private $_themeFile;

+	private $_skins=array();

+

+	public function __construct($themeFile)

+	{

+		$this->_themeFile=$themeFile;

+		$this->_themePath=dirname($themeFile);

+		if(is_file($themeFile) && is_readable($themeFile))

 		{

-			$attributes=array();

-			foreach($control->attributes() as $name=>$value)

+			$theme=&$this->parse(file_get_contents($themeFile));

+			foreach($theme as $skin)

 			{

-				$attributes[strtolower($name)]=(string)$value;

+				if($skin[0]!==0)

+					throw new TConfigurationException('theme_control_nested',$skin[1]);

+				else if(!isset($skin[2]))  // a text string, ignored

+					continue;

+				$type=$skin[1];

+				$id=isset($skin[2]['skinid'])?$skin[2]['skinid']:0;

+				unset($skin[2]['skinid']);

+				if(isset($this->_skins[$type][$id]))

+					throw new TConfigurationException('theme_skinid_duplicated',$type,$id);

+				foreach($skin[2] as $name=>$value)

+				{

+					if(is_array($value) && $value[0]===0)

+						throw new TConfigurationException('theme_databind_unsupported',$type,$id,$name);

+				}

+				$this->_skins[$type][$id]=$skin[2];

 			}

-			$skinID=isset($attributes['skinid'])?(string)$attributes['skinid']:0;

-			unset($attributes['skinid']);

-			if(isset($this->_skins[$type][$skinID]))

-				throw new Exception("Duplicated skin $type.$skinID");

-			else

-				$this->_skins[$type][$skinID]=$attributes;

 		}

+		else

+			throw new TIOException('theme_themefile_invalid',$themeFile);

 	}

 

 	public function applySkin($control)

@@ -52,11 +135,32 @@ class TTheme extends TComponent
 		{

 			foreach($this->_skins[$type][$id] as $name=>$value)

 			{

-				$control->setSubProperty($name,$value);

+				if(is_array($value))

+					$value=$this->evaluateExpression($value);

+				if(strpos($name,'.')===false)	// is simple property or custom attribute

+				{

+					if($control->hasProperty($name))

+					{

+						if($control->canSetProperty($name))

+						{

+							$setter='set'.$name;

+							$control->$setter($value);

+						}

+						else

+							throw new TConfigurationException('theme_property_readonly',get_class($control),$name);

+					}

+					else if($control->getAllowCustomAttributes())

+						$control->getAttributes()->add($name,$value);

+					else

+						throw new TConfigurationException('theme_property_undefined',get_class($control),$name);

+				}

+				else	// complex property

+					$control->setSubProperty($name,$value);

 			}

+			return true;

 		}

 		else

-			return;

+			return false;

 	}

 }