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<?php
/**
* THead class file
*
* @author Marcus Nyeholt <tanus@users.sourceforge.net> and 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
*/
/**
* THead class
*
* This component is used to provide access to the <head> HTML
* element through prado code. You can access it via the
*
* <code>
$this->Page->Head
</code>
* property.
*
* The THead component provides functionality that is also available through
* the TPage component (it will remain in the TPage component for cases where a THead
* component is not included on the page), including:
*
* - <b>registerScriptFile</b>
* - <b>registerStyleFile</b>
*
* Additionally, there are additional methods
*
* - <b>registerScriptBlock</b>
* <br/>Register script to be output between <script> tags
* - <b>registerStyleBlock</b>
* <br/>Register script to be output between <style> tags
* - <b>registerMetaInfo</b>
* <br/>Register information to be output in a <meta> tag
*
* Namespace: System.Web.UI.WebControls
*
* Properties
* - <b>Title</b>, string, kept in viewstate
* <br/>Gets or sets the <title> of the page
*
* Examples
* - On a page template file, insert the following line to create a THead component,
* <code>
* <com:THead Title="My Prado Page"/>
* </code>
* The checkbox will show "Agree" text on its right side. If the user makes any change
* to the <b>Checked</b> state, the checkAgree() method of the page class will be invoked automatically.
*
* @author Marcus Nyeholt <tanus@users.sourceforge.net> and Qiang Xue <qiang.xue@gmail.com>
* @version $Revision: $ $Date: $
* @package System.Web.UI.WebControls
* @since 3.0
*/
class THead extends TControl
{
/**
* @var array list of meta name tags to be loaded by {@link THead}
*/
private $_metaTags=array();
/**
* This method is invoked when the control enters 'Init' stage.
* The method raises 'Init' event.
* If you override this method, be sure to call the parent implementation
* so that the event handlers can be invoked.
* @param TEventParameter event parameter to be passed to the event handlers
*/
protected function onInit($param)
{
parent::onInit($param);
$this->getPage()->setHead($this);
}
/**
* @return string the page title.
*/
public function getTitle()
{
return $this->getPage()->getTitle();
}
/**
* @param string the page's title
*/
public function setTitle($value)
{
$this->getPage()->setTitle($value);
}
/**
* Registers a meta tag to be imported with the page body
* @param string a key that identifies the meta tag to avoid repetitive registration
* @param string the content of the meta tag
* @param string the language of the tag
* @see isTagRegistered()
*/
public function registerMetaTag($key,$metaTag)
{
$this->_metaTags[$key] = $metaTag;
}
/**
* Indicates whether the named meta tag has been registered before.
* @param string the name of tag
* @param string the lang of the tag
* @return boolean
* @see registerMetaTag()
*/
public function isMetaTagRegistered($key)
{
return isset($this->_metaTags[$key]);
}
/**
* Render the <head> tag
* @return the rendering result.
*/
public function render($writer)
{
$writer->write("<head>\n<title>".THttpUtility::htmlEncode($this->getTitle())."</title>\n");
foreach($this->_metaTags as $metaTag)
{
$metaTag->render($writer);
$writer->writeLine();
}
$cs=$this->getPage()->getClientScript();
$cs->renderStyleSheetFiles($writer);
$cs->renderStyleSheets($writer);
$cs->renderHeadScriptFiles($writer);
$cs->renderHeadScripts($writer);
parent::render($writer);
$writer->write("</head>\n");
}
}
class TMetaTag extends TComponent
{
private $_id='';
private $_httpEquiv='';
private $_name='';
private $_content='';
private $_scheme='';
public function getID()
{
return $this->_id;
}
public function setID($value)
{
$this->_id=$value;
}
public function getHttpEquiv()
{
return $this->_httpEquiv;
}
public function setHttpEquiv($value)
{
$this->_httpEquiv=$value;
}
public function getName()
{
return $this->_name;
}
public function setName($value)
{
$this->_name=$value;
}
public function getContent()
{
return $this->_content;
}
public function setContent($value)
{
$this->_content=$value;
}
public function getScheme()
{
return $this->_scheme;
}
public function setScheme($value)
{
$this->_scheme=$value;
}
public function render($writer)
{
if($this->_id!=='')
$writer->addAttribute('id',$this->_id);
if($this->_name!=='')
$writer->addAttribute('name',$this->_name);
if($this->_httpEquiv!=='')
$writer->addAttribute('http-equiv',$this->_name);
if($this->_scheme!=='')
$writer->addAttribute('scheme',$this->_name);
$writer->addAttribute('content',$this->_name);
$writer->renderBeginTag('meta');
$writer->renderEndTag();
}
}
?>
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