head.php

Aller à la documentation de ce fichier.

<?php
/**
 * @package     Joomla.Platform
 * @subpackage  Document
 *
 * @copyright   Copyright (C) 2005 - 2013 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)
        {
                // Convert the tagids to titles
                if (isset($document->_metaTags['standard']['tags']))
                {
                        $tagsHelper = new JHelperTags;
                        $document->_metaTags['standard']['tags'] = implode(', ', $tagsHelper->getTagNames($document->_metaTags['standard']['tags']));
                }

                // Trigger the onBeforeCompileHead event
                $app = JFactory::getApplication();
                $app->triggerEvent('onBeforeCompileHead');

                // Get line endings
                $lnEnd = $document->_getLineEnd();
                $tab = $document->_getTab();
                $tagEnd = ' />';
                $buffer = '';

                // 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="' . $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' && !($document->isHtml5() && $name == 'content-type'))
                                {
                                        $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;
        }
}