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Diffstat (limited to 'framework/Web/UI/TTemplateManager.php')
| -rw-r--r-- | framework/Web/UI/TTemplateManager.php | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/framework/Web/UI/TTemplateManager.php b/framework/Web/UI/TTemplateManager.php new file mode 100644 index 00000000..7dd406c7 --- /dev/null +++ b/framework/Web/UI/TTemplateManager.php @@ -0,0 +1,131 @@ +<?php +/** + * TTemplateManager and TTemplate class file + * + * @author Qiang Xue <qiang.xue@gmail.com> + * @link http://www.pradosoft.com/ + * @copyright Copyright © 2005-2014 PradoSoft + * @license http://www.pradosoft.com/license/ + * @package System.Web.UI + */ + +/** + * Includes TOutputCache class file + */ +Prado::using('System.Web.UI.WebControls.TOutputCache'); + +/** + * TTemplateManager class + * + * TTemplateManager manages the loading and parsing of control templates. + * + * There are two ways of loading a template, either by the associated template + * control class name, or the template file name. + * The former is via calling {@link getTemplateByClassName}, which tries to + * locate the corresponding template file under the directory containing + * the class file. The name of the template file is the class name with + * the extension '.tpl'. To load a template from a template file path, + * call {@link getTemplateByFileName}. + * + * By default, TTemplateManager is registered with {@link TPageService} as the + * template manager module that can be accessed via {@link TPageService::getTemplateManager()}. + * + * @author Qiang Xue <qiang.xue@gmail.com> + * @package System.Web.UI + * @since 3.0 + */ +class TTemplateManager extends TModule +{ + /** + * Template file extension + */ + const TEMPLATE_FILE_EXT='.tpl'; + /** + * Prefix of the cache variable name for storing parsed templates + */ + const TEMPLATE_CACHE_PREFIX='prado:template:'; + + /** + * Initializes the module. + * This method is required by IModule and is invoked by application. + * It starts output buffer if it is enabled. + * @param TXmlElement module configuration + */ + public function init($config) + { + $this->getService()->setTemplateManager($this); + } + + /** + * Loads the template corresponding to the specified class name. + * @return ITemplate template for the class name, null if template doesn't exist. + */ + public function getTemplateByClassName($className) + { + $class=new ReflectionClass($className); + $tplFile=dirname($class->getFileName()).DIRECTORY_SEPARATOR.$className.self::TEMPLATE_FILE_EXT; + return $this->getTemplateByFileName($tplFile); + } + + /** + * Loads the template from the specified file. + * @return ITemplate template parsed from the specified file, null if the file doesn't exist. + */ + public function getTemplateByFileName($fileName) + { + if(($fileName=$this->getLocalizedTemplate($fileName))!==null) + { + Prado::trace("Loading template $fileName",'System.Web.UI.TTemplateManager'); + if(($cache=$this->getApplication()->getCache())===null) + return new TTemplate(file_get_contents($fileName),dirname($fileName),$fileName); + else + { + $array=$cache->get(self::TEMPLATE_CACHE_PREFIX.$fileName); + if(is_array($array)) + { + list($template,$timestamps)=$array; + if($this->getApplication()->getMode()===TApplicationMode::Performance) + return $template; + $cacheValid=true; + foreach($timestamps as $tplFile=>$timestamp) + { + if(!is_file($tplFile) || filemtime($tplFile)>$timestamp) + { + $cacheValid=false; + break; + } + } + if($cacheValid) + return $template; + } + $template=new TTemplate(file_get_contents($fileName),dirname($fileName),$fileName); + $includedFiles=$template->getIncludedFiles(); + $timestamps=array(); + $timestamps[$fileName]=filemtime($fileName); + foreach($includedFiles as $includedFile) + $timestamps[$includedFile]=filemtime($includedFile); + $cache->set(self::TEMPLATE_CACHE_PREFIX.$fileName,array($template,$timestamps)); + return $template; + } + } + else + return null; + } + + /** + * Finds a localized template file. + * @param string template file. + * @return string|null a localized template file if found, null otherwise. + */ + protected function getLocalizedTemplate($filename) + { + if(($app=$this->getApplication()->getGlobalization(false))===null) + return is_file($filename)?$filename:null; + foreach($app->getLocalizedResource($filename) as $file) + { + if(($file=realpath($file))!==false && is_file($file)) + return $file; + } + return null; + } +}
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