node_book_menu.inc

<?php


/**
 * @file
 */
if (module_exists('book')) {
    
    /**
     * Plugins are described by creating a $plugin array which will be used
     * by the system that includes this file.
     */
    $plugin = array(
        'single' => TRUE,
        'title' => t('Book navigation menu'),
        'icon' => drupal_get_path('module', 'ctools') . '/plugins/content_types/block/icon_core_block_menu.png',
        'description' => t('The book menu belonging to the current book node.'),
        'required context' => new ctools_context_required(t('Node'), 'node'),
        'category' => t('Node'),
    );
}
function ctools_node_book_menu_content_type_render($subtype, $conf, $panel_args, $context) {
    $node = isset($context->data) ? clone $context->data : NULL;
    $block = new stdClass();
    $block->module = 'book_menu';
    if ($conf['override_title']) {
        $block->title = t($conf['override_title_text']);
    }
    else {
        $block->title = t('Book navigation menu');
    }
    if ($node) {
        $block->delta = $node->nid;
        // TODO: the value is not available somehow?!?
        $book_block_mode = isset($conf['book_block_mode']) ? $conf['book_block_mode'] : 'book pages';
        // Code below is taken from function book_block_view().
        $current_bid = empty($node->book['bid']) ? 0 : $node->book['bid'];
        if ($book_block_mode === 'all pages') {
            $block->subject = t('Book navigation');
            $book_menus = array();
            $pseudo_tree = array(
                0 => array(
                    'below' => FALSE,
                ),
            );
            foreach (book_get_books() as $book_id => $book) {
                if ($book['bid'] === $current_bid) {
                    // If the current page is a node associated with a book, the menu
                    // needs to be retrieved.
                    $book_menus[$book_id] = menu_tree_output(menu_tree_all_data($node->book['menu_name'], $node->book));
                }
                else {
                    // Since we know we will only display a link to the top node, there
                    // is no reason to run an additional menu tree query for each book.
                    $book['in_active_trail'] = FALSE;
                    // Check whether user can access the book link.
                    $book_node = node_load($book['nid']);
                    $book['access'] = node_access('view', $book_node);
                    $pseudo_tree[0]['link'] = $book;
                    $book_menus[$book_id] = menu_tree_output($pseudo_tree);
                }
            }
            $book_menus['#theme'] = 'book_all_books_block';
            $block->content = $book_menus;
        }
        elseif ($current_bid) {
            // Only display this block when the user is browsing a book.
            $select = db_select('node', 'n')->fields('n', array(
                'title',
            ))
                ->condition('n.nid', $node->book['bid'])
                ->addTag('node_access');
            $title = $select->execute()
                ->fetchField();
            // Only show the block if the user has view access for the top-level node.
            if ($title) {
                $tree = menu_tree_all_data($node->book['menu_name'], $node->book);
                // There should only be one element at the top level.
                $data = array_shift($tree);
                // TODO: subject is not rendered.
                $block->subject = theme('book_title_link', array(
                    'link' => $data['link'],
                ));
                $block->content = $data['below'] ? menu_tree_output($data['below']) : '';
            }
        }
    }
    else {
        $block->content = t('Book navigation pager goes here.');
        $block->delta = 'unknown';
    }
    return $block;
}
function ctools_node_book_menu_content_type_admin_title($subtype, $conf, $context) {
    return t('"@s" book navigation pager', array(
        '@s' => $context->identifier,
    ));
}
function ctools_node_book_menu_content_type_edit_form($form, &$form_state) {
    // Grab block form from the book module.
    $block_form = book_block_configure($delta = '');
    // TODO: this does not work yet.
    //       See TODO in: ctools_node_book_menu_content_type_render.
    if (isset($form_state['input']['book_block_mode'])) {
        $block_form['book_block_mode']['#default_value'] = $form_state['input']['book_block_mode'];
    }
    $form += $block_form;
    return $form;
}