function overlay_init

Implements hook_init().

Determine whether the current page request is destined to appear in the parent window or in the overlay window, and format the page accordingly.

See also

overlay_set_mode()

File

modules/overlay/overlay.module, line 136

Code

function overlay_init() {
    global $user;
    $mode = overlay_get_mode();
    // Only act if the user has access to the overlay and a mode was not already
    // set. Other modules can also enable the overlay directly for other uses.
    $use_overlay = !isset($user->data['overlay']) || $user->data['overlay'];
    if (empty($mode) && user_access('access overlay') && $use_overlay) {
        $current_path = current_path();
        // After overlay is enabled on the modules page, redirect to
        // <front>#overlay=admin/modules to actually enable the overlay.
        if (isset($_SESSION['overlay_enable_redirect']) && $_SESSION['overlay_enable_redirect']) {
            unset($_SESSION['overlay_enable_redirect']);
            drupal_goto('<front>', array(
                'fragment' => 'overlay=' . $current_path,
            ));
        }
        if (isset($_GET['render']) && $_GET['render'] == 'overlay') {
            // If a previous page requested that we close the overlay, close it and
            // redirect to the final destination.
            if (isset($_SESSION['overlay_close_dialog'])) {
                call_user_func_array('overlay_close_dialog', $_SESSION['overlay_close_dialog']);
                unset($_SESSION['overlay_close_dialog']);
            }
            elseif (!path_is_admin($current_path)) {
                // Prevent open redirects by ensuring the current path is not an absolute URL.
                if (url_is_external($current_path)) {
                    $current_path = '<front>';
                }
                overlay_close_dialog($current_path, array(
                    'query' => drupal_get_query_parameters(NULL, array(
                        'q',
                        'render',
                    )),
                ));
            }
            // Indicate that we are viewing an overlay child page.
            overlay_set_mode('child');
            // Unset the render parameter to avoid it being included in URLs on the page.
            unset($_GET['render']);
        }
        elseif (!path_is_admin($current_path)) {
            // Otherwise add overlay parent code and our behavior.
            overlay_set_mode('parent');
        }
    }
}