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<?php
/**
* @package Joomla.Platform
* @subpackage Document
*
* @copyright Copyright (C) 2005 - 2014 Open Source Matters, Inc. All rights reserved.
* @license GNU General Public License version 2 or later; see LICENSE
*/
defined('JPATH_PLATFORM') or die;
/**
* JDocument head renderer
*
* @package Joomla.Platform
* @subpackage Document
* @since 11.1
*/
class JDocumentRendererHead extends JDocumentRenderer
{
/**
* Renders the document head and returns the results as a string
*
* @param string $head (unused)
* @param array $params Associative array of values
* @param string $content The script
*
* @return string The output of the script
*
* @since 11.1
*
* @note Unused arguments are retained to preserve backward compatibility.
*/
public function render($head, $params = array(), $content = null)
{
ob_start();
echo $this->fetchHead($this->_doc);
$buffer = ob_get_contents();
ob_end_clean();
return $buffer;
}
/**
* Generates the head HTML and return the results as a string
*
* @param JDocument &$document The document for which the head will be created
*
* @return string The head hTML
*
* @since 11.1
*/
public function fetchHead(&$document)
{
// Trigger the onBeforeCompileHead event (skip for installation, since it causes an error)
$app = JFactory::getApplication();
$app->triggerEvent('onBeforeCompileHead');
// Get line endings
$lnEnd = $document->_getLineEnd();
$tab = $document->_getTab();
$tagEnd = ' />';
$buffer = '';
// Generate base tag (need to happen first)
$base = $document->getBase();
if (!empty($base))
{
$buffer .= $tab . '<base href="' . $document->getBase() . '" />' . $lnEnd;
}
// Generate META tags (needs to happen as early as possible in the head)
foreach ($document->_metaTags as $type => $tag)
{
foreach ($tag as $name => $content)
{
if ($type == 'http-equiv')
{
$content .= '; charset=' . $document->getCharset();
$buffer .= $tab . '<meta http-equiv="' . $name . '" content="' . htmlspecialchars($content) . '" />' . $lnEnd;
}
elseif ($type == 'standard' && !empty($content))
{
$buffer .= $tab . '<meta name="' . $name . '" content="' . htmlspecialchars($content) . '" />' . $lnEnd;
}
}
}
// Don't add empty descriptions
$documentDescription = $document->getDescription();
if ($documentDescription)
{
$buffer .= $tab . '<meta name="description" content="' . htmlspecialchars($documentDescription) . '" />' . $lnEnd;
}
// Don't add empty generators
$generator = $document->getGenerator();
if ($generator)
{
$buffer .= $tab . '<meta name="generator" content="' . htmlspecialchars($generator) . '" />' . $lnEnd;
}
$buffer .= $tab . '<title>' . htmlspecialchars($document->getTitle(), ENT_COMPAT, 'UTF-8') . '</title>' . $lnEnd;
// Generate link declarations
foreach ($document->_links as $link => $linkAtrr)
{
$buffer .= $tab . '<link href="' . $link . '" ' . $linkAtrr['relType'] . '="' . $linkAtrr['relation'] . '"';
if ($temp = JArrayHelper::toString($linkAtrr['attribs']))
{
$buffer .= ' ' . $temp;
}
$buffer .= ' />' . $lnEnd;
}
// Generate stylesheet links
foreach ($document->_styleSheets as $strSrc => $strAttr)
{
$buffer .= $tab . '<link rel="stylesheet" href="' . $strSrc . '" type="' . $strAttr['mime'] . '"';
if (!is_null($strAttr['media']))
{
$buffer .= ' media="' . $strAttr['media'] . '" ';
}
if ($temp = JArrayHelper::toString($strAttr['attribs']))
{
$buffer .= ' ' . $temp;
}
$buffer .= $tagEnd . $lnEnd;
}
// Generate stylesheet declarations
foreach ($document->_style as $type => $content)
{
$buffer .= $tab . '<style type="' . $type . '">' . $lnEnd;
// This is for full XHTML support.
if ($document->_mime != 'text/html')
{
$buffer .= $tab . $tab . '<![CDATA[' . $lnEnd;
}
$buffer .= $content . $lnEnd;
// See above note
if ($document->_mime != 'text/html')
{
$buffer .= $tab . $tab . ']]>' . $lnEnd;
}
$buffer .= $tab . '</style>' . $lnEnd;
}
// Generate script file links
foreach ($document->_scripts as $strSrc => $strAttr)
{
$buffer .= $tab . '<script src="' . $strSrc . '"';
if (!is_null($strAttr['mime']))
{
$buffer .= ' type="' . $strAttr['mime'] . '"';
}
if ($strAttr['defer'])
{
$buffer .= ' defer="defer"';
}
if ($strAttr['async'])
{
$buffer .= ' async="async"';
}
$buffer .= '></script>' . $lnEnd;
}
// Generate script declarations
foreach ($document->_script as $type => $content)
{
$buffer .= $tab . '<script type="' . $type . '">' . $lnEnd;
// This is for full XHTML support.
if ($document->_mime != 'text/html')
{
$buffer .= $tab . $tab . '<![CDATA[' . $lnEnd;
}
$buffer .= $content . $lnEnd;
// See above note
if ($document->_mime != 'text/html')
{
$buffer .= $tab . $tab . ']]>' . $lnEnd;
}
$buffer .= $tab . '</script>' . $lnEnd;
}
// Generate script language declarations.
if (count(JText::script()))
{
$buffer .= $tab . '<script type="text/javascript">' . $lnEnd;
$buffer .= $tab . $tab . '(function() {' . $lnEnd;
$buffer .= $tab . $tab . $tab . 'var strings = ' . json_encode(JText::script()) . ';' . $lnEnd;
$buffer .= $tab . $tab . $tab . 'if (typeof Joomla == \'undefined\') {' . $lnEnd;
$buffer .= $tab . $tab . $tab . $tab . 'Joomla = {};' . $lnEnd;
$buffer .= $tab . $tab . $tab . $tab . 'Joomla.JText = strings;' . $lnEnd;
$buffer .= $tab . $tab . $tab . '}' . $lnEnd;
$buffer .= $tab . $tab . $tab . 'else {' . $lnEnd;
$buffer .= $tab . $tab . $tab . $tab . 'Joomla.JText.load(strings);' . $lnEnd;
$buffer .= $tab . $tab . $tab . '}' . $lnEnd;
$buffer .= $tab . $tab . '})();' . $lnEnd;
$buffer .= $tab . '</script>' . $lnEnd;
}
foreach ($document->_custom as $custom)
{
$buffer .= $tab . $custom . $lnEnd;
}
return $buffer;
}
}