<?php

function unl_wdn_preprocess_html(&$vars, $hook)
{
  /**
   * Change the <title> tag to UNL format: UNL | Department | Section | Page
   */
  $head_title[] = 'Home';
  
  $trail = menu_get_active_trail();
  foreach ($trail as $item) {
    if ($item['type'] & MENU_VISIBLE_IN_BREADCRUMB) {
      if (isset($item['title']) && !empty($item['title'])) {
          $head_title[] = $item['title'];
      }
      if (isset($item['page_arguments'],
                $item['page_arguments'][0],
                $item['page_arguments'][0]->title)) {
          $head_title[] = $item['page_arguments'][0]->title;
      }
    }
  }
  
  // Change 'Home' to be $site_name
  array_unshift($head_title, str_replace( 'Home', variable_get('site_name', 'Department'), array_shift($head_title)));
  
  //Prepend UNL
  array_unshift($head_title, 'UNL');
  
  $vars['head_title'] = implode(' | ', $head_title);
}

function unl_wdn_get_instance()
{
    static $instance;
    if (!$instance) {
        set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/lib/php');
        require_once "UNL/Templates.php";
        
        UNL_Templates::$options['version'] = UNL_Templates::VERSION3;
        if (theme_get_setting('toggle_main_menu')) {
            $instance = UNL_Templates::factory('Fixed');
        } else {
            $instance = UNL_Templates::factory('Document');
        }
    }
    
    return $instance;
}

require_once dirname(__FILE__) . '/includes/form.inc';

function unl_wdn_breadcrumb($variables)
{
    $breadcrumbs = $variables['breadcrumb'];
    
    if (count($breadcrumbs) == 0) {
        $breadcrumbs[] = '<a href="">' . unl_get_site_name_abbreviated() . '</a>';
    } else {
        //Change 'Home' to be $site_name
        array_unshift($breadcrumbs,
                      str_replace('Home', unl_get_site_name_abbreviated(),
                      array_shift($breadcrumbs)));
    }
    
    //Add the intermediate breadcrumb if it exists
    $intermediateBreadcrumbText = theme_get_setting('intermediate_breadcrumb_text');
    $intermediateBreadcrumbHref = theme_get_setting('intermediate_breadcrumb_href');
    if ($intermediateBreadcrumbText && $intermediateBreadcrumbHref) {
        array_unshift($breadcrumbs, '<a href="' . $intermediateBreadcrumbHref . '">' . $intermediateBreadcrumbText . '</a>');
    }
    
    //Prepend UNL
    array_unshift($breadcrumbs, '<a href="http://www.unl.edu/">UNL</a>');
    
    //Append title of current page -- http://drupal.org/node/133242
    if (!drupal_is_front_page()) {
        $breadcrumbs[] = drupal_get_title();
    }
    
    $html = '<ul>' . PHP_EOL;
    foreach ($breadcrumbs as $breadcrumb) {
        $html .= '<li>' .  $breadcrumb . '</li>';
    }
    $html .= '</ul>';
    
    return $html;
}

function unl_wdn_menu_item($link, $has_children, $menu = '', $in_active_trail = FALSE, $extra_class = NULL)
{
    if ($extra_class) {
        return '<li class="' . $extra_class . '">' . $link . $menu . '</li>' . "\n";
    } else {
        return '<li>' . $link . $menu . '</li>' . PHP_EOL;
    }
}

function unl_wdn_menu_tree($variables)
{
    $tree = $variables['tree'];
    return '<ul>' . $tree . '</ul>' . PHP_EOL;
}

function unl_wdn_menu_local_tasks()
{
    $output = array();
    
    if ($primary = menu_primary_local_tasks()) {
        $primary['#prefix'] = '<ul class="wdn_tabs disableSwitching">';
        $primary['#suffix'] = '</ul>';
        $output[] = $primary;
    }
    if ($secondary = menu_secondary_local_tasks()) {
        $secondary['#prefix'] = '<ul class="wdn_tabs disableSwitching">';
        $secondary['#suffix'] = '</ul>';
        $output[] = $secondary;
    }
    
    return $output;
}

function unl_wdn_menu_local_task($variables)
{
    $link = $variables['element']['#link'];
    $link_text = $link['title'];

    if (!empty($variables['element']['#active'])) {
        // If the link does not contain HTML already, check_plain() it now.
        // After we set 'html'=TRUE the link will not be sanitized by l().
        if (empty($link['localized_options']['html'])) {
            $link['title'] = check_plain($link['title']);
        }
        $link['localized_options']['html'] = TRUE;
        $link_text = t('!local-task-title !active', array('!local-task-title' => $link['title'], '!active' => ''));
    }
    return '<li' . (!empty($variables['element']['#active']) ? ' class="selected"' : '') . '>' . l($link_text, $link['href'], $link['localized_options']) . "</li>\n";
}

function unl_wdn_status_messages($variables)
{
    $display = $variables['display'];
    
    $output = '';
    foreach (drupal_get_messages($display) as $type => $messages) {
        $type = ucfirst($type);
        $output .= <<<EOF
<div class="wdn_notice">
    <div class="close">
        <a href="#" title="Close this notice">Close this notice</a>
    </div>
    <div class="message">
        <h3>$type</h3>
EOF;
        if (count($messages) > 1) {
            $output .= '<ul>' . PHP_EOL;
            foreach ($messages as $message) {
                $output .= '<li>' . $message . '</li>' . PHP_EOL;
            }
            $output .= '</ul>' . PHP_EOL;
        } else {
            $output .= $messages[0];
        }
        $output .= <<<EOF
    </div>
</div>
EOF;
    }
    
    if (!$output) {
        return '';
    }
    
    $output = <<<EOF
<script type="text/javascript">
WDN.initializePlugin('notice');
</script>
$output
EOF;
    
    return $output;
}

/**
 * Return the abbreviated site name, assuming it has been set and we're not on the front page.
 * Otherwise, it returns the full site name.
 */
function unl_get_site_name_abbreviated()
{
	if (!drupal_is_front_page() && theme_get_setting('site_name_abbreviation')) {
        return theme_get_setting('site_name_abbreviation');
	} else {
        return variable_get('site_name', 'Department');
	}
}