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<?php
/**
* TTemplateColumn class file
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005 PradoSoft
* @license http://www.pradosoft.com/license/
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
*/
/**
* TDataGridColumn class file
*/
Prado::using('System.Web.UI.WebControls.TDataGridColumn');
/**
* TTemplateColumn class
*
* TTemplateColumn customizes the layout of controls in the column with templates.
* In particular, you can specify <b>ItemTemplate</b>, <b>EditItemTemplate</b>
* <b>HeaderTemplate</b> and <b>FooterTemplate</b> to customize specific
* type of cells in the column.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
* @since 3.0
*/
class TTemplateColumn extends TDataGridColumn
{
/**
* Number of seconds that a cached template will expire after
*/
const CACHE_EXPIRY=18000;
/**
* Various item templates
* @var string
*/
private $_itemTemplate='';
private $_editItemTemplate='';
private $_headerTemplate='';
private $_footerTemplate='';
private static $_templates=array();
/**
* @return string the edit item template string
*/
public function getEditItemTemplate()
{
return $this->_editItemTemplate;
}
/**
* Sets the edit item template string
* @param string the edit item template
*/
public function setEditItemTemplate($value)
{
$this->_editItemTemplate=$value;
}
/**
* @return string the template string for the item
*/
public function getItemTemplate()
{
return $this->_itemTemplate;
}
/**
* Sets the template string for the item
* @param string the item template
*/
public function setItemTemplate($value)
{
$this->_itemTemplate=$value;
}
/**
* @return string the header template string
*/
public function getHeaderTemplate()
{
return $this->_headerTemplate;
}
/**
* Sets the header template.
* The template will be parsed immediately.
* @param string the header template
*/
public function setHeaderTemplate($value)
{
$this->_headerTemplate=$value;
}
/**
* @return string the footer template string
*/
public function getFooterTemplate()
{
return $this->_footerTemplate;
}
/**
* Sets the footer template.
* The template will be parsed immediately.
* @param string the footer template
*/
public function setFooterTemplate($value)
{
$this->_footerTemplate=$value;
}
/**
* Initializes the specified cell to its initial values.
* This method overrides the parent implementation.
* It initializes the cell based on different templates
* (ItemTemplate, EditItemTemplate, HeaderTemplate, FooterTemplate).
* @param TTableCell the cell to be initialized.
* @param integer the index to the Columns property that the cell resides in.
* @param string the type of cell (Header,Footer,Item,AlternatingItem,EditItem,SelectedItem)
*/
public function initializeCell($cell,$columnIndex,$itemType)
{
parent::initializeCell($cell,$columnIndex,$itemType);
$tplContent='';
switch($itemType)
{
case 'Header':
$tplContent=$this->_headerTemplate;
break;
case 'Footer':
$tplContent=$this->_footerTemplate;
break;
case 'Item':
case 'AlternatingItem':
case 'SelectedItem':
$tplContent=$this->_itemTemplate;
break;
case 'EditItem':
$tplContent=$this->_editItemTemplate===''?$this->_itemTemplate:$this->_editItemTemplate;
break;
}
if($tplContent!=='')
{
$cell->setText('');
$cell->getControls()->clear();
$this->createTemplate($tplContent)->instantiateIn($cell);
}
}
/**
* Parses item template.
* This method uses caching technique to accelerate template parsing.
* @param string template string
* @return ITemplate parsed template object
*/
protected function createTemplate($str)
{
$key=md5($str);
if(isset(self::$_templates[$key]))
return self::$_templates[$key];
else
{
$contextPath=$this->getOwner()->getTemplateControl()->getTemplate()->getContextPath();
if(($cache=$this->getApplication()->getCache())!==null)
{
if(($template=$cache->get($key))===null)
{
$template=new TTemplate($str,$contextPath);
$cache->set($key,$template,self::CACHE_EXPIRY);
}
}
else
$template=new TTemplate($str,$contextPath);
self::$_templates[$key]=$template;
return $template;
}
}
}
?>
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