function advanced_forum_theme_registry_alter in Advanced Forum 6.2

Same name and namespace in other branches

1. 6 advanced_forum.module \advanced_forum_theme_registry_alter()
2. 7.2 advanced_forum.module \advanced_forum_theme_registry_alter()

Implementation of hook_theme_registry_alter().

File

./advanced_forum.module, line 218

Enables the look and feel of other popular forum software.

Code

function advanced_forum_theme_registry_alter(&$theme_registry) {
  advanced_forum_load_style_includes();

  // Garland's phptemplate_comment_wrapper really sucks. Chances are, a theme
  // does NOT want to control this on forum nodes anyway, so we're going to take
  // it over:
  if (isset($theme_registry['comment_wrapper']['function']) && $theme_registry['comment_wrapper']['function'] == 'phptemplate_comment_wrapper') {
    $theme_registry['comment_wrapper']['function'] = 'advanced_forum_comment_wrapper';
  }

  // Optionally kill the next/previous forum topic navigation links because
  // it is a nasty query that can slow down the forums.
  if (!variable_get('advanced_forum_use_topic_navigation', FALSE)) {
    foreach ($theme_registry['forum_topic_navigation']['preprocess functions'] as $key => $value) {
      if ($value == 'template_preprocess_forum_topic_navigation') {
        unset($theme_registry['forum_topic_navigation']['preprocess functions'][$key]);
      }
    }
  }

  // Don't let core do its basic preprocess for forums, as we want to do
  // other stuff now.
  foreach ($theme_registry['forums']['preprocess functions'] as $key => $value) {
    if ($value == 'template_preprocess_forums') {
      unset($theme_registry['forums']['preprocess functions'][$key]);
    }
  }

  // We duplicate all of core's forum list preprocessing so no need to run
  // it twice. Running twice also causes problems with & in forum name.
  foreach ($theme_registry['forum_list']['preprocess functions'] as $key => $value) {
    if ($value == 'template_preprocess_forum_list') {
      unset($theme_registry['forum_list']['preprocess functions'][$key]);
    }
  }

  // Views handles the topic list pages so remove the core template preprocess.
  foreach ($theme_registry['forum_topic_list']['preprocess functions'] as $key => $value) {
    if ($value == 'template_preprocess_forum_topic_list') {
      unset($theme_registry['forum_topic_list']['preprocess functions'][$key]);
    }
  }

  // --- The following section manipulates the theme registry so the .tpl files
  // --- for the given templates can be found first in the (sub)theme directory
  // --- then in ancestor themes, if any, then in the active style directory
  // --- for advanced forum or any ancestor styles.
  // Affected templates
  $templates = array(
    'node',
    'comment',
    'comment_wrapper',
    'forums',
    'forum_list',
    'forum_topic_list',
    'forum_icon',
    'forum_submitted',
    'forum_topic_navigation',
    'author_pane',
    'advanced_forum_statistics',
    'advanced_forum_search_forum',
    'advanced_forum_search_topic',
    'advanced_forum_search_result',
    'advanced_forum_topic_list_view',
    'views_view_fields__advanced_forum_search',
    'views_view_fields__advanced_forum_search_topic',
    'views_view_forum_topic_list__advanced_forum_topic_list',
    'views_view_forum_topic_list__advanced_forum_group_topic_list',
    'views_view__advanced_forum_topic_list',
    'views_view__advanced_forum_group_topic_list',
    'advanced_forum_topic_legend',
    'advanced_forum_forum_legend',
    'advanced_forum_topic_header',
    'advanced_forum_active_poster',
  );

  // Find all our ancestor themes and put them in an array.
  global $theme;
  $themes = list_themes();
  $ancestor_paths = array();
  $ancestor = $theme;
  while ($ancestor && isset($themes[$ancestor]->base_theme)) {
    array_unshift($ancestor_paths, dirname($themes[$themes[$ancestor]->base_theme]->filename));
    $ancestor = $themes[$ancestor]->base_theme;
  }

  // Get the sequence of styles to look in for templates
  $lineage = advanced_forum_style_lineage();
  if (!array_key_exists('naked', $lineage)) {

    // Add naked in at the end of the line to prevent problems if a style
    // doesn't include all needed templates.
    $lineage['naked'] = drupal_get_path('module', 'advanced_forum') . '/styles/naked';
  }
  foreach ($templates as $template) {

    // Sanity check in case the template is not being used.
    if (!empty($theme_registry[$template])) {

      // If there was a path in there, store it.
      $existing_path = array_shift($theme_registry[$template]['theme paths']);

      // Add paths for our style and ancestors before the existing path, if any.
      foreach ($lineage as $style => $style_path) {
        array_unshift($theme_registry[$template]['theme paths'], $existing_path, $style_path);
        $existing_path = array_shift($theme_registry[$template]['theme paths']);
      }

      // If there are any ancestor paths (ie: we are in a subtheme, add those)
      foreach ($ancestor_paths as $ancestor_path) {
        $theme_registry[$template]['theme paths'][] = $ancestor_path;
      }

      // Put the active theme's path last since that takes precidence.
      $theme_registry[$template]['theme paths'][] = advanced_forum_path_to_theme();

      // Add preprocess functions if our style has them.
      $preprocess = array();
      foreach ($lineage as $key => $path) {
        if (function_exists('advanced_forum_' . $key . '_preprocess_' . $template)) {
          $preprocess[] = 'advanced_forum_' . $key . '_preprocess_' . $template;
        }
      }

      // There are preprocess functions to add, so figure out where we want to add
      // them.
      if ($preprocess) {
        $position = 0;
        foreach ($theme_registry[$template]['preprocess functions'] as $function) {
          $position++;

          // If we see either of these items, that means we can place our
          // preprocess functions after this.
          if (substr($function, 0, 25) == 'advanced_forum_preprocess' || substr($function, 0, 34) == 'template_preprocess_advanced_forum') {
            break;
          }
        }

        // Add in our new preprocess functions:
        array_splice($theme_registry[$template]['preprocess functions'], $position, 0, $preprocess);
      }
    }
  }
}