<?php
/**
 * @file
 * Filters which may be used from xml
 */

/**
 * A configuration function for generating an active status in a list
 * item corresponding to the currently active 'name'
 *
 * @param $input the string to be processed
 * @param $options Options for this file
 */
function activeNav($input, $options)
{
  $name = $options->getName();
  if (!$name)
    $name = $options->getInputDefault('name');
  $lang = $options->getLang();
  $pattern = "/<li id=\"${name}\"\s?([^>]*)>/is";
  $replacement = "<li id=\"${name}\" class=\"active\" $1>";
  $output = preg_replace($pattern, $replacement, $input);

  $pattern = '/<li id="([^"]+)"\s?([^>]*)>(.*?)<\/li>/is';
  $replacement = "<li id=\"\$1\" \$2><a href=\"%URL-$1%\">\$3</a></li>";

  $output = preg_replace_callback($pattern,
	function($matches) use ($options){
          $opt = $options->getUrlParams();
          $baseUrl = $options->getBaseUrl();
          $g=genUrl($opt, array("name" => $matches[1]), array("lang", "name") );
	  return "<li id=\"$matches[1]\" $matches[2]><a href=\"$baseUrl" . $g . "\">$matches[3]</a></li>";
	},
	$output);

  return $output;
}

/**
 * A configuration function for generating a language bar.
 *
 * @param $input the string to be processed
 * @param $options Options for this file
 * @param $languages array of alternative languages
 */
function addLangBar($input, $options, $languages)
{
  $name = $options->getName();
  $lang = $options->getLang();
  $langbar='<ul id="language-select">';

  foreach($languages as $l) {
    $active = ($l == $lang) ? 0 : 1;
    $langbar.= "
	    <li class=\"${l}\">";
    if ($active)
      $langbar .= '<a href="'.genUrl($options->getUrlParams(), array( 'lang' => $l), array('lang', 'name') ) . '">';

    $flagUrl = $options->getFlagUrl();

    $langbar .= "
	      <img src=\"${flagUrl}?lang=${l}&amp;active=${active}\" width=\"20\" height=\"16\" alt=\"Norsk versjon - inaktiv\" title=\"Norsk\"/>";
    if ($active)
      $langbar .= "</a>";

    $langbar .= "
	    </li>
";

  }
  $langbar.='</ul>';
  $pattern = '/<ul id="language-select"\/>/';
  $replacement = $langbar;
  $output = preg_replace($pattern, $replacement, $input);

  return $output;
}
?>