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<?php
/**
* DokuWiki Plugin mathjax (Action Component)
*
* @license GPL 2 http://www.gnu.org/licenses/gpl-2.0.html
* @author Mark Liffiton <liffiton@gmail.com>
*/
// must be run within Dokuwiki
if (!defined('DOKU_INC')) die();
/**
* Add scripts via an event handler
*/
class action_plugin_mathjax_enable extends DokuWiki_Action_Plugin {
/**
* Registers our handler for the TPL_METAHEADER_OUTPUT event
*/
public function register(Doku_Event_Handler $controller) {
$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'handle_tpl_metaheader_output');
}
/**
* Add <script> blocks to the headers:
* - One to load MathJax and one to configure it
* - Also add one block per configfile, if any are specified
* See https://docs.mathjax.org/en/latest/configuration.html#using-in-line-configuration-options
*
* @param Doku_Event $event
* @param $param
*/
public function handle_tpl_metaheader_output(Doku_Event &$event, $param) {
// Create main config block
$event->data['script'][] = array(
'type' => 'text/x-mathjax-config',
'_data' => $this->getConf('config'),
);
// Include config files, if any specified
$configfiles = $this->getConf('configfile');
$files = explode(';', $configfiles);
foreach ($files as $f) {
$f = trim($f);
if ($f == "" or !is_readable($f)) {
continue;
}
$contents = file_get_contents(DOKU_INC . $f);
if ($contents) {
$event->data['script'][] = array(
'type' => 'text/x-mathjax-config',
'_data' => "\n// " . $f . "\n" . $contents,
);
}
}
// Load MathJax itself
$event->data['script'][] = array(
'type' => 'text/javascript',
'charset' => 'utf-8',
'src' => $this->getConf('url'),
'_data' => '',
);
}
}
// vim:ts=4:sw=4:et:
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