function system_themes_page

Menu callback; displays a listing of all themes.

File

drupal/core/modules/system/system.admin.inc, line 116

Admin page callbacks for the system module.

Code

function system_themes_page() {

  // Get current list of themes.
  $themes = system_rebuild_theme_data();
  uasort($themes, 'system_sort_modules_by_info_name');
  $theme_default = variable_get('theme_default', 'stark');
  $theme_groups = array();
  $admin_theme = variable_get('admin_theme', 0);
  foreach ($themes as &$theme) {
    if (!empty($theme->info['hidden'])) {
      continue;
    }
    $theme->is_default = $theme->name == $theme_default;

    // Identify theme screenshot.
    $theme->screenshot = NULL;

    // Create a list which includes the current theme and all its base themes.
    if (isset($themes[$theme->name]->base_themes)) {
      $theme_keys = array_keys($themes[$theme->name]->base_themes);
      $theme_keys[] = $theme->name;
    }
    else {
      $theme_keys = array(
        $theme->name,
      );
    }

    // Look for a screenshot in the current theme or in its closest ancestor.
    foreach (array_reverse($theme_keys) as $theme_key) {
      if (isset($themes[$theme_key]) && file_exists($themes[$theme_key]->info['screenshot'])) {
        $theme->screenshot = array(
          'uri' => $themes[$theme_key]->info['screenshot'],
          'alt' => t('Screenshot for !theme theme', array(
            '!theme' => $theme->info['name'],
          )),
          'title' => t('Screenshot for !theme theme', array(
            '!theme' => $theme->info['name'],
          )),
          'attributes' => array(
            'class' => array(
              'screenshot',
            ),
          ),
        );
        break;
      }
    }
    if (empty($theme->status)) {

      // Ensure this theme is compatible with this version of core.
      // Require the 'content' region to make sure the main page
      // content has a common place in all themes.
      $theme->incompatible_core = !isset($theme->info['core']) || $theme->info['core'] != DRUPAL_CORE_COMPATIBILITY || !isset($theme->info['regions']['content']);
      $theme->incompatible_php = version_compare(phpversion(), $theme->info['php']) < 0;

      // Confirmed that the base theme is available.
      $theme->incompatible_base = isset($theme->info['base theme']) && !isset($themes[$theme->info['base theme']]);

      // Confirm that the theme engine is available.
      $theme->incompatible_engine = isset($theme->info['engine']) && !isset($theme->owner);
    }
    $query['token'] = drupal_get_token('system-theme-operation-link');
    $theme->operations = array();
    if (!empty($theme->status) || !$theme->incompatible_core && !$theme->incompatible_php && !$theme->incompatible_base && !$theme->incompatible_engine) {

      // Create the operations links.
      $query['theme'] = $theme->name;
      if (drupal_theme_access($theme)) {
        $theme->operations[] = array(
          'title' => t('Settings'),
          'href' => 'admin/appearance/settings/' . $theme->name,
          'attributes' => array(
            'title' => t('Settings for !theme theme', array(
              '!theme' => $theme->info['name'],
            )),
          ),
        );
      }
      if (!empty($theme->status)) {
        if (!$theme->is_default) {
          if ($theme->name != $admin_theme) {
            $theme->operations[] = array(
              'title' => t('Disable'),
              'href' => 'admin/appearance/disable',
              'query' => $query,
              'attributes' => array(
                'title' => t('Disable !theme theme', array(
                  '!theme' => $theme->info['name'],
                )),
              ),
            );
          }
          $theme->operations[] = array(
            'title' => t('Set default'),
            'href' => 'admin/appearance/default',
            'query' => $query,
            'attributes' => array(
              'title' => t('Set !theme as default theme', array(
                '!theme' => $theme->info['name'],
              )),
            ),
          );
        }
        $admin_theme_options[$theme->name] = $theme->info['name'];
      }
      else {
        $theme->operations[] = array(
          'title' => t('Enable'),
          'href' => 'admin/appearance/enable',
          'query' => $query,
          'attributes' => array(
            'title' => t('Enable !theme theme', array(
              '!theme' => $theme->info['name'],
            )),
          ),
        );
        $theme->operations[] = array(
          'title' => t('Enable and set default'),
          'href' => 'admin/appearance/default',
          'query' => $query,
          'attributes' => array(
            'title' => t('Enable !theme as default theme', array(
              '!theme' => $theme->info['name'],
            )),
          ),
        );
      }
    }

    // Add notes to default and administration theme.
    $theme->notes = array();
    $theme->classes = array();
    if ($theme->is_default) {
      $theme->classes[] = 'theme-default';
      $theme->notes[] = t('default theme');
    }
    if ($theme->name == $admin_theme || $theme->is_default && $admin_theme == '0') {
      $theme->classes[] = 'theme-admin';
      $theme->notes[] = t('admin theme');
    }

    // Sort enabled and disabled themes into their own groups.
    $theme_groups[$theme->status ? 'enabled' : 'disabled'][] = $theme;
  }

  // There are two possible theme groups.
  $theme_group_titles = array(
    'enabled' => format_plural(count($theme_groups['enabled']), 'Enabled theme', 'Enabled themes'),
  );
  if (!empty($theme_groups['disabled'])) {
    $theme_group_titles['disabled'] = format_plural(count($theme_groups['disabled']), 'Disabled theme', 'Disabled themes');
  }
  uasort($theme_groups['enabled'], 'system_sort_themes');
  drupal_alter('system_themes_page', $theme_groups);
  $admin_form = drupal_get_form('system_themes_admin_form', $admin_theme_options);
  return theme('system_themes_page', array(
    'theme_groups' => $theme_groups,
    'theme_group_titles' => $theme_group_titles,
  )) . drupal_render($admin_form);
}