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<?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.
* - $book_title: The book/node title of the current outline being viewed.
* Provided as an option. Not used by default.
*
* @see template_preprocess_book_navigation()
*/
?>
<?php if ($tree || $has_links): ?>
<div id="book-navigation-<?php print $book_id; ?>" class="book-navigation">
<?php print $tree; ?>
<?php if ($has_links): ?>
<div class="page-links clearfix">
<?php if ($prev_url) : ?>
<a href="<?php print $prev_url; ?>" class="page-previous" title="<?php print t('Go to previous page'); ?>"><?php print t('‹ ') . $prev_title; ?></a>
<?php endif; ?>
<?php if ($parent_url) : ?>
<a href="<?php print $parent_url; ?>" class="page-up" title="<?php print t('Go to parent page'); ?>"><?php print t('up'); ?></a>
<?php endif; ?>
<?php if ($next_url) : ?>
<a href="<?php print $next_url; ?>" class="page-next" title="<?php print t('Go to next page'); ?>"><?php print $next_title . t(' ›'); ?></a>
<?php endif; ?>
</div>
<?php endif; ?>
</div>
<?php endif; ?>
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