Club Drupal

  // Add link to toggle developer modules (performance).

  $saved_state = variable_get('admin_menu_devel_modules_enabled', NULL);

  $links['icon']['toggle-modules'] = array(

    '#title' => isset($saved_state) ? t('Enable developer modules') : t('Disable developer modules'),

    '#weight' => 88,

    '#access' => user_access('administer modules'),

    '#href' => 'admin_menu/toggle-modules',

    '#options' => array(

      'query' => $destination + array('token' => drupal_get_token('admin_menu/toggle-modules')),

    ),

  );

  // Fetch all available modules manually, since module_list() only returns

  // currently enabled modules, which makes this setting pointless if developer

  // modules are currently disabled.

  $all_modules = array();

  $result = db_query("SELECT name, filename, info FROM {system} WHERE type = 'module' ORDER BY name ASC");

  foreach ($result as $module) {

    if (file_exists($module->filename)) {

      $info = unserialize($module->info);

      $all_modules[$module->name] = $info['name'];

    }

  }

  $devel_modules = variable_get('admin_menu_devel_modules', _admin_menu_developer_modules());

  $devel_modules = array_intersect_key($all_modules, array_flip($devel_modules));

  $form['performance']['admin_menu_devel_modules_skip'] = array(

    '#type' => 'checkboxes',

    '#title' => t('Developer modules to keep enabled'),

    '#default_value' => variable_get('admin_menu_devel_modules_skip', array()),

    '#options' => $devel_modules,

    '#access' => !empty($devel_modules),

    '#description' => t('The selected modules will not be disabled when the link %disable-developer-modules below the icon in the menu is invoked.', array(

      '%disable-developer-modules' => t('Disable developer modules'),

    )),

  );

/**

 * Menu callback; Enable/disable developer modules.

 *

 * This can save up to 150ms on each uncached page request.

 */

function admin_menu_toggle_modules() {

  if (!isset($_GET['token']) || !drupal_valid_token($_GET['token'], current_path())) {

    return MENU_ACCESS_DENIED;

  }

  $rebuild = FALSE;

  $saved_state = variable_get('admin_menu_devel_modules_enabled', NULL);

  if (isset($saved_state)) {

    // Re-enable modules that were enabled before.

    module_enable($saved_state);

    variable_del('admin_menu_devel_modules_enabled');

    drupal_set_message(t('Enabled these modules: !module-list.', array('!module-list' => implode(', ', $saved_state))));

    $rebuild = TRUE;

  }

  else {

    // Allow site admins to override this variable via settings.php.

    $devel_modules = variable_get('admin_menu_devel_modules', _admin_menu_developer_modules());

    // Store currently enabled modules in a variable.

    $devel_modules = array_intersect(module_list(FALSE, FALSE), $devel_modules);

    $devel_modules = array_diff($devel_modules, variable_get('admin_menu_devel_modules_skip', array()));

    if (!empty($devel_modules)) {

      variable_set('admin_menu_devel_modules_enabled', $devel_modules);

      // Disable developer modules.

      module_disable($devel_modules);

      drupal_set_message(t('Disabled these modules: !module-list.', array('!module-list' => implode(', ', $devel_modules))));

      $rebuild = TRUE;

    }

    else {

      drupal_set_message(t('No developer modules are enabled.'));

    }

  }

  if ($rebuild) {

    // Make sure everything is rebuilt, basically a combination of the calls

    // from system_modules() and system_modules_submit().

    drupal_theme_rebuild();

    menu_rebuild();

    cache_clear_all('schema', 'cache');

    cache_clear_all();

    drupal_clear_css_cache();

    drupal_clear_js_cache();

    // Synchronize to catch any actions that were added or removed.

    actions_synchronize();

    // Finally, flush admin_menu's cache.

    admin_menu_flush_caches();

  }

  drupal_goto();

}

/**

 * Helper function to return a default list of developer modules.

 */

function _admin_menu_developer_modules() {

  return array(

    'admin_devel',

    'cache_disable',

    'coder',

    'content_copy',

    'context_ui',

    'debug',

    'delete_all',

    'demo',

    'devel',

    'devel_node_access',

    'devel_themer',

    'field_ui',

    'fontyourface_ui',

    'form_controller',

    'imagecache_ui',

    'journal',

    'l10n_client',

    'l10n_update',

    'macro',

    'rules_admin',

    'stringoverrides',

    'trace',

    'upgrade_status',

    'user_display_ui',

    'util',

    'views_ui',

    'views_theme_wizard',

  );

}