One class per file: framework/Web/UI/*.php (continue)

1 files changed, 183 insertions, 0 deletions

diff --git a/framework/Web/UI/TThemeManager.php b/framework/Web/UI/TThemeManager.php
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+<?php
+/**
+ * TThemeManager class
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @link http://www.pradosoft.com/
+ * @copyright Copyright &copy; 2005-2014 PradoSoft
+ * @license http://www.pradosoft.com/license/
+ * @package System.Web.UI
+ */
+
+Prado::using('System.Web.Services.TPageService');
+
+/**
+ * TThemeManager class
+ *
+ * TThemeManager manages the themes used in a Prado application.
+ *
+ * Themes are stored under the directory specified by the
+ * {@link setBasePath BasePath} property. The themes can be accessed
+ * via URL {@link setBaseUrl BaseUrl}. Each theme is represented by a subdirectory
+ * and all the files under that directory. The name of a theme is the name
+ * of the corresponding subdirectory.
+ * By default, the base path of all themes is a directory named "themes"
+ * under the directory containing the application entry script.
+ * To get a theme (normally you do not need to), call {@link getTheme}.
+ *
+ * TThemeManager may be configured within page service tag in application
+ * configuration file as follows,
+ * <module id="themes" class="System.Web.UI.TThemeManager"
+ *         BasePath="Application.themes" BaseUrl="/themes" />
+ * where {@link getCacheExpire CacheExpire}, {@link getCacheControl CacheControl}
+ * and {@link getBufferOutput BufferOutput} are configurable properties of THttpResponse.
+ *
+ * @author Qiang Xue <qiang.xue@gmail.com>
+ * @package System.Web.UI
+ * @since 3.0
+ */
+class TThemeManager extends TModule
+{
+	/**
+	 * default themes base path
+	 */
+	const DEFAULT_BASEPATH='themes';
+
+	/**
+	 * default theme class
+	 */
+	const DEFAULT_THEMECLASS = 'TTheme';
+
+	/**
+	 * @var string
+	 */
+	private $_themeClass=self::DEFAULT_THEMECLASS;
+
+	/**
+	 * @var boolean whether this module has been initialized
+	 */
+	private $_initialized=false;
+	/**
+	 * @var string the directory containing all themes
+	 */
+	private $_basePath=null;
+	/**
+	 * @var string the base URL for all themes
+	 */
+	private $_baseUrl=null;
+
+	/**
+	 * Initializes the module.
+	 * This method is required by IModule and is invoked by application.
+	 * @param TXmlElement module configuration
+	 */
+	public function init($config)
+	{
+		$this->_initialized=true;
+		$service=$this->getService();
+		if($service instanceof TPageService)
+			$service->setThemeManager($this);
+		else
+			throw new TConfigurationException('thememanager_service_unavailable');
+	}
+
+	/**
+	 * @param string name of the theme to be retrieved
+	 * @return TTheme the theme retrieved
+	 */
+	public function getTheme($name)
+	{
+		$themePath=$this->getBasePath().DIRECTORY_SEPARATOR.$name;
+		$themeUrl=rtrim($this->getBaseUrl(),'/').'/'.$name;
+		return Prado::createComponent($this->getThemeClass(), $themePath, $themeUrl);
+	}
+
+	/**
+	 * @param string|null $class Theme class name in namespace format
+	 */
+	public function setThemeClass($class) {
+		$this->_themeClass = $class===null ? self::DEFAULT_THEMECLASS : (string)$class;
+	}
+
+	/**
+	 * @return string Theme class name in namespace format. Defaults to {@link TThemeManager::DEFAULT_THEMECLASS DEFAULT_THEMECLASS}.
+	 */
+	public function getThemeClass() {
+		return $this->_themeClass;
+	}
+
+	/**
+	 * @return array list of available theme names
+	 */
+	public function getAvailableThemes()
+	{
+		$themes=array();
+		$basePath=$this->getBasePath();
+		$folder=@opendir($basePath);
+		while($file=@readdir($folder))
+		{
+			if($file!=='.' && $file!=='..' && $file!=='.svn' && is_dir($basePath.DIRECTORY_SEPARATOR.$file))
+				$themes[]=$file;
+		}
+		closedir($folder);
+		return $themes;
+	}
+
+	/**
+	 * @return string the base path for all themes. It is returned as an absolute path.
+	 * @throws TConfigurationException if base path is not set and "themes" directory does not exist.
+	 */
+	public function getBasePath()
+	{
+		if($this->_basePath===null)
+		{
+			$this->_basePath=dirname($this->getRequest()->getApplicationFilePath()).DIRECTORY_SEPARATOR.self::DEFAULT_BASEPATH;
+			if(($basePath=realpath($this->_basePath))===false || !is_dir($basePath))
+				throw new TConfigurationException('thememanager_basepath_invalid2',$this->_basePath);
+			$this->_basePath=$basePath;
+		}
+		return $this->_basePath;
+	}
+
+	/**
+	 * @param string the base path for all themes. It must be in the format of a namespace.
+	 * @throws TInvalidDataValueException if the base path is not a proper namespace.
+	 */
+	public function setBasePath($value)
+	{
+		if($this->_initialized)
+			throw new TInvalidOperationException('thememanager_basepath_unchangeable');
+		else
+		{
+			$this->_basePath=Prado::getPathOfNamespace($value);
+			if($this->_basePath===null || !is_dir($this->_basePath))
+				throw new TInvalidDataValueException('thememanager_basepath_invalid',$value);
+		}
+	}
+
+	/**
+	 * @return string the base URL for all themes.
+	 * @throws TConfigurationException If base URL is not set and a correct one cannot be determined by Prado.
+	 */
+	public function getBaseUrl()
+	{
+		if($this->_baseUrl===null)
+		{
+			$appPath=dirname($this->getRequest()->getApplicationFilePath());
+			$basePath=$this->getBasePath();
+			if(strpos($basePath,$appPath)===false)
+				throw new TConfigurationException('thememanager_baseurl_required');
+			$appUrl=rtrim(dirname($this->getRequest()->getApplicationUrl()),'/\\');
+			$this->_baseUrl=$appUrl.strtr(substr($basePath,strlen($appPath)),'\\','/');
+		}
+		return $this->_baseUrl;
+	}
+
+	/**
+	 * @param string the base URL for all themes.
+	 */
+	public function setBaseUrl($value)
+	{
+		$this->_baseUrl=rtrim($value,'/');
+	}
+}
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