function _book_parent_select

Builds the parent selection form element for the node form or outline tab.

This function is also called when generating a new set of options during the Ajax callback, so an array is returned that can be used to replace an existing form element.

Parameters

$book_link: A fully loaded menu link that is part of the book hierarchy.

Return value

A parent selection form element.

File

modules/book/book.module, line 473

Code

function _book_parent_select($book_link) {
    if (variable_get('menu_override_parent_selector', FALSE)) {
        return array();
    }
    // Offer a message or a drop-down to choose a different parent page.
    $form = array(
        '#type' => 'hidden',
        '#value' => -1,
        '#prefix' => '<div id="edit-book-plid-wrapper">',
        '#suffix' => '</div>',
    );
    if ($book_link['nid'] === $book_link['bid']) {
        // This is a book - at the top level.
        if ($book_link['original_bid'] === $book_link['bid']) {
            $form['#prefix'] .= '<em>' . t('This is the top-level page in this book.') . '</em>';
        }
        else {
            $form['#prefix'] .= '<em>' . t('This will be the top-level page in this book.') . '</em>';
        }
    }
    elseif (!$book_link['bid']) {
        $form['#prefix'] .= '<em>' . t('No book selected.') . '</em>';
    }
    else {
        $form = array(
            '#type' => 'select',
            '#title' => t('Parent item'),
            '#default_value' => $book_link['plid'],
            '#description' => t('The parent page in the book. The maximum depth for a book and all child pages is !maxdepth. Some pages in the selected book may not be available as parents if selecting them would exceed this limit.', array(
                '!maxdepth' => MENU_MAX_DEPTH,
            )),
            '#options' => book_toc($book_link['bid'], $book_link['parent_depth_limit'], array(
                $book_link['mlid'],
            )),
            '#attributes' => array(
                'class' => array(
                    'book-title-select',
                ),
            ),
            '#prefix' => '<div id="edit-book-plid-wrapper">',
            '#suffix' => '</div>',
        );
    }
    return $form;
}