function book_menus_theme_registry_alter in Book Menus 7

Implements hook_theme_registry_alter().

Make our preprocess function run before book.module's.

File

./book_menus.module, line 202

Functionality for book_menus.module.

Code

function book_menus_theme_registry_alter(&$theme_registry) {

  // Make sure that the book navigation theme entry is present.
  if (!empty($theme_registry['book_navigation']['preprocess functions'])) {

    // Save the template function.
    $template_function = 'template_preprocess_book_navigation';

    // Get the current function order.
    $functions_old = $theme_registry['book_navigation']['preprocess functions'];

    // Make sure the one we want is in there.
    if (!in_array($template_function, $functions_old)) {

      // Functions not there, bail out.
      return NULL;
    }

    // Get the template function index.
    $index = array_search($template_function, $functions_old);

    // Set the new order.
    $theme_registry['book_navigation']['preprocess functions'] = array_merge(array_slice($functions_old, 0, $index), array(
      'book_menus_preprocess_book_navigation_before',
    ), array_slice($functions_old, $index));
  }
}