book-navigation.tpl.php

book_node_view in drupal/core/modules/book/book.module

Implements hook_node_view().

<?php

/**
 * @file
 * Default theme implementation to navigate books.
 *
 * Presented under nodes that are a part of book outlines.
 *
 * Available variables:
 * - $tree: The immediate children of the current node rendered as an unordered
 *   list.
 * - $current_depth: Depth of the current node within the book outline. Provided
 *   for context.
 * - $prev_url: URL to the previous node.
 * - $prev_title: Title of the previous node.
 * - $parent_url: URL to the parent node.
 * - $parent_title: Title of the parent node. Not printed by default. Provided
 *   as an option.
 * - $next_url: URL to the next node.
 * - $next_title: Title of the next node.
 * - $has_links: Flags TRUE whenever the previous, parent or next data has a
 *   value.
 * - $book_id: The book ID of the current outline being viewed. Same as the node
 *   ID containing the entire outline. Provided for context.
 * - $book_url: The book/node URL of the current outline being viewed. Provided
 *   as an option. Not used by default.
 * - $book_title: The book/node title of the current outline being viewed.
 *   Provided as an option. Not used by default.
 *
 * @see template_preprocess_book_navigation()
 *
 * @ingroup themeable
 */
if ($tree || $has_links) {
  ?>
  <nav id="book-navigation-<?php

  print $book_id;
  ?>" class="book-navigation">
    <?php

  print $tree;
  ?>
    <?php

  if ($has_links) {
    ?>
      <h2 class="element-invisible"><?php

    print t('Book Navigation');
    ?></h2>
      <ul class="book-pager">
      <?php

    if ($prev_url) {
      ?>
        <li class="previous">
          <a href="<?php

      print $prev_url;
      ?>" rel="prev" title="<?php

      print t('Go to previous page');
      ?>"><b><?php

      print t('‹');
      ?></b> <?php

      print $prev_title;
      ?></a>
        </li>
      <?php

    }
    ?>
      <?php

    if ($parent_url) {
      ?>
        <li class="up">
          <a href="<?php

      print $parent_url;
      ?>" title="<?php

      print t('Go to parent page');
      ?>"><?php

      print t('up');
      ?></a>
        </li>
      <?php

    }
    ?>
      <?php

    if ($next_url) {
      ?>
        <li class="next">
          <a href="<?php

      print $next_url;
      ?>" rel="next" title="<?php

      print t('Go to next page');
      ?>"><?php

      print $next_title;
      ?> <b><?php

      print t('›');
      ?></b></a>
        </li>
      <?php

    }
    ?>
    </ul>
    <?php

  }
  ?>
  </nav>
<?php

}