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<?php
/**
* Joomla! Content Management System
*
* @copyright (C) 2015 Open Source Matters, Inc.
<https://www.joomla.org>
* @license GNU General Public License version 2 or later; see
LICENSE.txt
*/
namespace Joomla\CMS\Document\Renderer\Html;
defined('JPATH_PLATFORM') or die;
use Joomla\CMS\Document\DocumentRenderer;
use Joomla\CMS\Helper\TagsHelper;
use Joomla\CMS\Uri\Uri;
use Joomla\Utilities\ArrayHelper;
/**
* HTML document renderer for the document `<head>` element
*
* @since 3.5
*/
class HeadRenderer extends DocumentRenderer
{
/**
* Renders the document head and returns the results as a string
*
* @param string $head (unused)
* @param array $params Associative array of values
* @param string $content The script
*
* @return string The output of the script
*
* @since 3.5
*/
public function render($head, $params = array(), $content = null)
{
return $this->fetchHead($this->_doc);
}
/**
* Generates the head HTML and return the results as a string
*
* @param JDocumentHtml $document The document for which the head will
be created
*
* @return string The head hTML
*
* @since 3.5
* @deprecated 4.0 Method code will be moved into the render method
*/
public function fetchHead($document)
{
// Convert the tagids to titles
if (isset($document->_metaTags['name']['tags']))
{
$tagsHelper = new TagsHelper;
$document->_metaTags['name']['tags'] =
implode(', ',
$tagsHelper->getTagNames($document->_metaTags['name']['tags']));
}
if ($document->getScriptOptions())
{
\JHtml::_('behavior.core');
}
// Trigger the onBeforeCompileHead event
$app = \JFactory::getApplication();
$app->triggerEvent('onBeforeCompileHead');
// Get line endings
$lnEnd = $document->_getLineEnd();
$tab = $document->_getTab();
$tagEnd = ' />';
$buffer = '';
$mediaVersion = $document->getMediaVersion();
// Generate charset when using HTML5 (should happen first)
if ($document->isHtml5())
{
$buffer .= $tab . '<meta charset="' .
$document->getCharset() . '" />' . $lnEnd;
}
// Generate base tag (need to happen early)
$base = $document->getBase();
if (!empty($base))
{
$buffer .= $tab . '<base href="' . $base .
'" />' . $lnEnd;
}
// Generate META tags (needs to happen as early as possible in the head)
foreach ($document->_metaTags as $type => $tag)
{
foreach ($tag as $name => $content)
{
if ($type == 'http-equiv' &&
!($document->isHtml5() && $name == 'content-type'))
{
$buffer .= $tab . '<meta http-equiv="' . $name .
'" content="' . htmlspecialchars($content, ENT_COMPAT,
'UTF-8') . '" />' . $lnEnd;
}
elseif ($type != 'http-equiv' && !empty($content))
{
if (is_array($content))
{
foreach ($content as $value)
{
$buffer .= $tab . '<meta ' . $type .
'="' . $name . '" content="' .
htmlspecialchars($value, ENT_COMPAT, 'UTF-8') . '"
/>' . $lnEnd;
}
}
else
{
$buffer .= $tab . '<meta ' . $type . '="'
. $name . '" content="' . htmlspecialchars($content,
ENT_COMPAT, 'UTF-8') . '" />' . $lnEnd;
}
}
}
}
// Don't add empty descriptions
$documentDescription = $document->getDescription();
if ($documentDescription)
{
$buffer .= $tab . '<meta name="description"
content="' . htmlspecialchars($documentDescription, ENT_COMPAT,
'UTF-8') . '" />' . $lnEnd;
}
// Don't add empty generators
$generator = $document->getGenerator();
if ($generator)
{
$buffer .= $tab . '<meta name="generator"
content="' . htmlspecialchars($generator, ENT_COMPAT,
'UTF-8') . '" />' . $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'] . '="'
. $linkAtrr['relation'] . '"';
if (is_array($linkAtrr['attribs']))
{
if ($temp = ArrayHelper::toString($linkAtrr['attribs']))
{
$buffer .= ' ' . $temp;
}
}
$buffer .= ' />' . $lnEnd;
}
$defaultCssMimes = array('text/css');
// Generate stylesheet links
foreach ($document->_styleSheets as $src => $attribs)
{
// Check if stylesheet uses IE conditional statements.
$conditional = isset($attribs['options']) &&
isset($attribs['options']['conditional']) ?
$attribs['options']['conditional'] : null;
// Check if script uses media version.
if (isset($attribs['options']['version']) &&
$attribs['options']['version'] && strpos($src,
'?') === false
&& ($mediaVersion ||
$attribs['options']['version'] !== 'auto'))
{
$src .= '?' .
($attribs['options']['version'] === 'auto' ?
$mediaVersion : $attribs['options']['version']);
}
$buffer .= $tab;
// This is for IE conditional statements support.
if (!is_null($conditional))
{
$buffer .= '<!--[if ' . $conditional . ']>';
}
$relation = isset($attribs['rel']) ? $attribs['rel']
: 'stylesheet';
$buffer .= '<link href="' . $src . '"
rel="' . $relation . '"';
// Add script tag attributes.
foreach ($attribs as $attrib => $value)
{
// Don't add the 'options' attribute. This attribute is
for internal use (version, conditional, etc).
if ($attrib === 'options')
{
continue;
}
// Don't add type attribute if document is HTML5 and it's a
default mime type. 'mime' is for B/C.
if (in_array($attrib, array('type', 'mime'))
&& $document->isHtml5() && in_array($value,
$defaultCssMimes))
{
continue;
}
// Don't add type attribute if document is HTML5 and it's a
default mime type. 'mime' is for B/C.
if ($attrib === 'mime')
{
$attrib = 'type';
}
// Add attribute to script tag output.
$buffer .= ' ' . htmlspecialchars($attrib, ENT_COMPAT,
'UTF-8');
// Json encode value if it's an array.
$value = !is_scalar($value) ? json_encode($value) : $value;
$buffer .= '="' . htmlspecialchars($value, ENT_COMPAT,
'UTF-8') . '"';
}
$buffer .= $tagEnd;
// This is for IE conditional statements support.
if (!is_null($conditional))
{
$buffer .= '<![endif]-->';
}
$buffer .= $lnEnd;
}
// Generate stylesheet declarations
foreach ($document->_style as $type => $content)
{
$buffer .= $tab . '<style';
if (!is_null($type) && (!$document->isHtml5() ||
!in_array($type, $defaultCssMimes)))
{
$buffer .= ' type="' . $type . '"';
}
$buffer .= '>' . $lnEnd;
// This is for full XHTML support.
if ($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 scripts options
$scriptOptions = $document->getScriptOptions();
if (!empty($scriptOptions))
{
$buffer .= $tab . '<script type="application/json"
class="joomla-script-options new">';
$prettyPrint = (JDEBUG && defined('JSON_PRETTY_PRINT')
? JSON_PRETTY_PRINT : false);
$jsonOptions = json_encode($scriptOptions, $prettyPrint);
$jsonOptions = $jsonOptions ? $jsonOptions : '{}';
$buffer .= $jsonOptions;
$buffer .= '</script>' . $lnEnd;
}
$defaultJsMimes = array('text/javascript',
'application/javascript', 'text/x-javascript',
'application/x-javascript');
$html5NoValueAttributes = array('defer', 'async');
// Generate script file links
foreach ($document->_scripts as $src => $attribs)
{
// Check if script uses IE conditional statements.
$conditional = isset($attribs['options']) &&
isset($attribs['options']['conditional']) ?
$attribs['options']['conditional'] : null;
// Check if script uses media version.
if (isset($attribs['options']['version']) &&
$attribs['options']['version'] && strpos($src,
'?') === false
&& ($mediaVersion ||
$attribs['options']['version'] !== 'auto'))
{
$src .= '?' .
($attribs['options']['version'] === 'auto' ?
$mediaVersion : $attribs['options']['version']);
}
$buffer .= $tab;
// This is for IE conditional statements support.
if (!is_null($conditional))
{
$buffer .= '<!--[if ' . $conditional . ']>';
}
$buffer .= '<script src="' . $src .
'"';
// Add script tag attributes.
foreach ($attribs as $attrib => $value)
{
// Don't add the 'options' attribute. This attribute is
for internal use (version, conditional, etc).
if ($attrib === 'options')
{
continue;
}
// Don't add type attribute if document is HTML5 and it's a
default mime type. 'mime' is for B/C.
if (in_array($attrib, array('type', 'mime'))
&& $document->isHtml5() && in_array($value,
$defaultJsMimes))
{
continue;
}
// B/C: If defer and async is false or empty don't render the
attribute.
if (in_array($attrib, array('defer', 'async'))
&& !$value)
{
continue;
}
// Don't add type attribute if document is HTML5 and it's a
default mime type. 'mime' is for B/C.
if ($attrib === 'mime')
{
$attrib = 'type';
}
// B/C defer and async can be set to yes when using the old method.
elseif (in_array($attrib, array('defer', 'async'))
&& $value === true)
{
$value = $attrib;
}
// Add attribute to script tag output.
$buffer .= ' ' . htmlspecialchars($attrib, ENT_COMPAT,
'UTF-8');
if (!($document->isHtml5() && in_array($attrib,
$html5NoValueAttributes)))
{
// Json encode value if it's an array.
$value = !is_scalar($value) ? json_encode($value) : $value;
$buffer .= '="' . htmlspecialchars($value, ENT_COMPAT,
'UTF-8') . '"';
}
}
$buffer .= '></script>';
// This is for IE conditional statements support.
if (!is_null($conditional))
{
$buffer .= '<![endif]-->';
}
$buffer .= $lnEnd;
}
// Generate script declarations
foreach ($document->_script as $type => $content)
{
$buffer .= $tab . '<script';
if (!is_null($type) && (!$document->isHtml5() ||
!in_array($type, $defaultJsMimes)))
{
$buffer .= ' type="' . $type . '"';
}
$buffer .= '>' . $lnEnd;
// This is for full XHTML support.
if ($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>' . $lnEnd;
}
// Output the custom tags - array_unique makes sure that we don't
output the same tags twice
foreach (array_unique($document->_custom) as $custom)
{
$buffer .= $tab . $custom . $lnEnd;
}
return ltrim($buffer, $tab);
}
}