WebSequenceDiagram.php

<?php
$wgExtensionCredits['parserhook'][] = array(
	'name'         => 'WebServiceSequenceDiagram',
	'version'      => '1.0',
	'author'       => 'Eddie Olsson', 
	'url'          => 'http://www.mediawiki.org/wiki/Extension:WebSequenceDiagram',
	'description'  => 'Render inline sequence diagrams using websequencediagrams.com'
);

if ( defined( 'MW_SUPPORTS_PARSERFIRSTCALLINIT' ) ) {
	$wgHooks['ParserFirstCallInit'][] = 'webSequenceDiagramSetup';
} else { // Otherwise do things the old fashioned way
	$wgExtensionFunctions[] = 'webSequenceDiagramSetup';
}
 
function webSequenceDiagramSetup() {
	global $wgParser;
	$wgParser->setHook( 'sequencediagram', 'webSequenceDiagramRender' );
       return true;
}
 
function webSequenceDiagramRender( $input, $args, $parser) {
	if( isset( $args['style'] ) )
		$style= $args['style'];
	else
		$style = 'default';

	$caption = '';
	if( isset( $args['caption'] ) )
		$caption = '<div class="thumbcaption">' . $args['caption'] . '</div>';

	return "\n" . 
		'<div class="thum tnone"><div class="thumbinner">' .
		'<div class=wsd wsd_style="' . $style . '"><pre>\n' .
		$input . "\n" . 
		'</pre></div>' . $caption . '</div><script type="text/javascript" src="//www.websequencediagrams.com/service.js"></script></div>';

}
?>