<?php
function book_theme() {
return array(
'book_navigation' => array(
'arguments' => array('book_link' => NULL),
'template' => 'book-navigation',
),
'book_export_html' => array(
'arguments' => array('title' => NULL, 'contents' => NULL, 'depth' => NULL),
'template' => 'book-export-html',
),
'book_admin_table' => array(
'arguments' => array('form' => NULL),
),
'book_title_link' => array(
'arguments' => array('link' => NULL),
),
'book_all_books_block' => array(
'arguments' => array('book_menus' => array()),
'template' => 'book-all-books-block',
),
'book_node_export_html' => array(
'arguments' => array('node' => NULL, 'children' => NULL),
'template' => 'book-node-export-html',
),
);
}
function book_perm() {
return array('add content to books', 'administer book outlines', 'create new books', 'access printer-friendly version');
}
function book_link($type, $node = NULL, $teaser = FALSE) {
$links = array();
if ($type == 'node' && isset($node->book)) {
if (!$teaser) {
$child_type = variable_get('book_child_type', 'book');
if ((user_access('add content to books') || user_access('administer book outlines')) && node_access('create', $child_type) && $node->status == 1 && $node->book['depth'] < MENU_MAX_DEPTH) {
$links['book_add_child'] = array(
'title' => t('Add child page'),
'href' => "node/add/". str_replace('_', '-', $child_type),
'query' => "parent=". $node->book['mlid'],
);
}
if (user_access('access printer-friendly version')) {
$links['book_printer'] = array(
'title' => t('Printer-friendly version'),
'href' => 'book/export/html/'. $node->nid,
'attributes' => array('title' => t('Show a printer-friendly version of this book page and its sub-pages.'))
);
}
}
}
return $links;
}
function book_menu() {
$items['admin/content/book'] = array(
'title' => 'Books',
'description' => "Manage your site's book outlines.",
'page callback' => 'book_admin_overview',
'access arguments' => array('administer book outlines'),
'file' => 'book.admin.inc',
);
$items['admin/content/book/list'] = array(
'title' => 'List',
'type' => MENU_DEFAULT_LOCAL_TASK,
);
$items['admin/content/book/settings'] = array(
'title' => 'Settings',
'page callback' => 'drupal_get_form',
'page arguments' => array('book_admin_settings'),
'access arguments' => array('administer site configuration'),
'type' => MENU_LOCAL_TASK,
'weight' => 8,
'file' => 'book.admin.inc',
);
$items['admin/content/book/%node'] = array(
'title' => 'Re-order book pages and change titles',
'page callback' => 'drupal_get_form',
'page arguments' => array('book_admin_edit', 3),
'access callback' => '_book_outline_access',
'access arguments' => array(3),
'type' => MENU_CALLBACK,
'file' => 'book.admin.inc',
);
$items['book'] = array(
'title' => 'Books',
'page callback' => 'book_render',
'access arguments' => array('access content'),
'type' => MENU_SUGGESTED_ITEM,
'file' => 'book.pages.inc',
);
$items['book/export/%/%'] = array(
'page callback' => 'book_export',
'page arguments' => array(2, 3),
'access arguments' => array('access printer-friendly version'),
'type' => MENU_CALLBACK,
'file' => 'book.pages.inc',
);
$items['node/%node/outline'] = array(
'title' => 'Outline',
'page callback' => 'book_outline',
'page arguments' => array(1),
'access callback' => '_book_outline_access',
'access arguments' => array(1),
'type' => MENU_LOCAL_TASK,
'weight' => 2,
'file' => 'book.pages.inc',
);
$items['node/%node/outline/remove'] = array(
'title' => 'Remove from outline',
'page callback' => 'drupal_get_form',
'page arguments' => array('book_remove_form', 1),
'access callback' => '_book_outline_remove_access',
'access arguments' => array(1),
'type' => MENU_CALLBACK,
'file' => 'book.pages.inc',
);
$items['book/js/form'] = array(
'page callback' => 'book_form_update',
'access arguments' => array('access content'),
'type' => MENU_CALLBACK,
'file' => 'book.pages.inc',
);
return $items;
}
function _book_outline_access($node) {
return user_access('administer book outlines') && node_access('view', $node);
}
function _book_outline_remove_access($node) {
return isset($node->book) && ($node->book['bid'] != $node->nid) && _book_outline_access($node);
}
function book_init() {
drupal_add_css(drupal_get_path('module', 'book') .'/book.css');
}
function book_block($op = 'list', $delta = 0, $edit = array()) {
$block = array();
switch ($op) {
case 'list':
$block[0]['info'] = t('Book navigation');
$block[0]['cache'] = BLOCK_CACHE_PER_PAGE | BLOCK_CACHE_PER_ROLE;
return $block;
case 'view':
$current_bid = 0;
if ($node = menu_get_object()) {
$current_bid = empty($node->book['bid']) ? 0 : $node->book['bid'];
}
if (variable_get('book_block_mode', 'all pages') == '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) {
$book_menus[$book_id] = menu_tree_output(menu_tree_all_data($node->book['menu_name'], $node->book));
}
else {
$book['in_active_trail'] = FALSE;
$pseudo_tree[0]['link'] = $book;
$book_menus[$book_id] = menu_tree_output($pseudo_tree);
}
}
$block['content'] = theme('book_all_books_block', $book_menus);
}
elseif ($current_bid) {
$title = db_result(db_query(db_rewrite_sql('SELECT n.title FROM {node} n WHERE n.nid = %d'), $node->book['bid']));
if ($title) {
$tree = menu_tree_all_data($node->book['menu_name'], $node->book);
$data = array_shift($tree);
$block['subject'] = theme('book_title_link', $data['link']);
$block['content'] = ($data['below']) ? menu_tree_output($data['below']) : '';
}
}
return $block;
case 'configure':
$options = array(
'all pages' => t('Show block on all pages'),
'book pages' => t('Show block only on book pages'),
);
$form['book_block_mode'] = array(
'#type' => 'radios',
'#title' => t('Book navigation block display'),
'#options' => $options,
'#default_value' => variable_get('book_block_mode', 'all pages'),
'#description' => t("If <em>Show block on all pages</em> is selected, the block will contain the automatically generated menus for all of the site's books. If <em>Show block only on book pages</em> is selected, the block will contain only the one menu corresponding to the current page's book. In this case, if the current page is not in a book, no block will be displayed. The <em>Page specific visibility settings</em> or other visibility settings can be used in addition to selectively display this block."),
);
return $form;
case 'save':
variable_set('book_block_mode', $edit['book_block_mode']);
break;
}
}
function theme_book_title_link($link) {
$link['options']['attributes']['class'] = 'book-title';
return l($link['title'], $link['href'], $link['options']);
}
function book_get_books() {
static $all_books;
if (!isset($all_books)) {
$all_books = array();
$result = db_query("SELECT DISTINCT(bid) FROM {book}");
$nids = array();
while ($book = db_fetch_array($result)) {
$nids[] = $book['bid'];
}
if ($nids) {
$result2 = db_query(db_rewrite_sql("SELECT n.type, n.title, b.*, ml.* FROM {book} b INNER JOIN {node} n on b.nid = n.nid INNER JOIN {menu_links} ml ON b.mlid = ml.mlid WHERE n.nid IN (". implode(',', $nids) .") AND n.status = 1 ORDER BY ml.weight, ml.link_title"));
while ($link = db_fetch_array($result2)) {
$link['href'] = $link['link_path'];
$link['options'] = unserialize($link['options']);
$all_books[$link['bid']] = $link;
}
}
}
return $all_books;
}
function book_form_alter(&$form, $form_state, $form_id) {
if (isset($form['type']) && isset($form['#node']) && $form['type']['#value'] .'_node_form' == $form_id) {
$node = $form['#node'];
$access = user_access('administer book outlines');
if (!$access) {
if (user_access('add content to books') && ((!empty($node->book['mlid']) && !empty($node->nid)) || book_type_is_allowed($node->type))) {
$access = TRUE;
}
}
if ($access) {
_book_add_form_elements($form, $node);
$form['book']['pick-book'] = array(
'#type' => 'submit',
'#value' => t('Change book (update list of parents)'),
'#submit' => array('node_form_submit_build_node'),
'#weight' => 20,
);
}
}
}
function _book_parent_select($book_link) {
if (variable_get('menu_override_parent_selector', FALSE)) {
return array();
}
$form = array(
'#type' => 'hidden',
'#value' => -1,
'#prefix' => '<div id="edit-book-plid-wrapper">',
'#suffix' => '</div>',
);
if ($book_link['nid'] === $book_link['bid']) {
if ($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'], array($book_link['mlid']), $book_link['parent_depth_limit']),
'#attributes' => array('class' => 'book-title-select'),
);
}
return $form;
}
function _book_add_form_elements(&$form, $node) {
$form['#cache'] = TRUE;
drupal_add_js("if (Drupal.jsEnabled) { $(document).ready(function() { $('#edit-book-pick-book').css('display', 'none'); }); }", 'inline');
$form['book'] = array(
'#type' => 'fieldset',
'#title' => t('Book outline'),
'#weight' => 10,
'#collapsible' => TRUE,
'#collapsed' => TRUE,
'#tree' => TRUE,
'#attributes' => array('class' => 'book-outline-form'),
);
foreach (array('menu_name', 'mlid', 'nid', 'router_path', 'has_children', 'options', 'module', 'original_bid', 'parent_depth_limit') as $key) {
$form['book'][$key] = array(
'#type' => 'value',
'#value' => $node->book[$key],
);
}
$form['book']['plid'] = _book_parent_select($node->book);
$form['book']['weight'] = array(
'#type' => 'weight',
'#title' => t('Weight'),
'#default_value' => $node->book['weight'],
'#delta' => 15,
'#weight' => 5,
'#description' => t('Pages at a given level are ordered first by weight and then by title.'),
);
$options = array();
$nid = isset($node->nid) ? $node->nid : 'new';
if (isset($node->nid) && ($nid == $node->book['original_bid']) && ($node->book['parent_depth_limit'] == 0)) {
$options[$node->nid] = $node->title;
}
else {
foreach (book_get_books() as $book) {
$options[$book['nid']] = $book['title'];
}
}
if (user_access('create new books') && ($nid == 'new' || ($nid != $node->book['original_bid']))) {
$options = array($nid => '<'. t('create a new book') .'>') + $options;
}
if (!$node->book['mlid']) {
$options = array(0 => '<'. t('none') .'>') + $options;
}
$form['book']['bid'] = array(
'#type' => 'select',
'#title' => t('Book'),
'#default_value' => $node->book['bid'],
'#options' => $options,
'#access' => (bool)$options,
'#description' => t('Your page will be a part of the selected book.'),
'#weight' => -5,
'#attributes' => array('class' => 'book-title-select'),
'#ahah' => array(
'path' => 'book/js/form',
'wrapper' => 'edit-book-plid-wrapper',
'effect' => 'slide',
),
);
}
function _book_update_outline(&$node) {
if (empty($node->book['bid'])) {
return FALSE;
}
$new = empty($node->book['mlid']);
$node->book['link_path'] = 'node/'. $node->nid;
$node->book['link_title'] = $node->title;
$node->book['parent_mismatch'] = FALSE;
if ($node->book['bid'] == $node->nid) {
$node->book['plid'] = 0;
$node->book['menu_name'] = book_menu_name($node->nid);
}
else {
if (!empty($node->book['plid'])) {
$parent = db_fetch_array(db_query("SELECT * FROM {book} WHERE mlid = %d", $node->book['plid']));
}
if (empty($node->book['plid']) || !$parent || $parent['bid'] != $node->book['bid']) {
$node->book['plid'] = db_result(db_query("SELECT mlid FROM {book} WHERE nid = %d", $node->book['bid']));
$node->book['parent_mismatch'] = TRUE; }
}
if (menu_link_save($node->book)) {
if ($new) {
db_query("INSERT INTO {book} (nid, mlid, bid) VALUES (%d, %d, %d)", $node->nid, $node->book['mlid'], $node->book['bid']);
}
else {
if ($node->book['bid'] != db_result(db_query("SELECT bid FROM {book} WHERE nid = %d", $node->nid))) {
book_update_bid($node->book);
}
}
return TRUE;
}
return FALSE;
}
function book_update_bid($book_link) {
for ($i = 1; $i <= MENU_MAX_DEPTH && $book_link["p$i"]; $i++) {
$match[] = "p$i = %d";
$args[] = $book_link["p$i"];
}
$result = db_query("SELECT mlid FROM {menu_links} WHERE ". implode(' AND ', $match), $args);
$mlids = array();
while ($a = db_fetch_array($result)) {
$mlids[] = $a['mlid'];
}
if ($mlids) {
db_query("UPDATE {book} SET bid = %d WHERE mlid IN (". implode(',', $mlids) .")", $book_link['bid']);
}
}
function book_get_flat_menu($book_link) {
static $flat = array();
if (!isset($flat[$book_link['mlid']])) {
$tree = menu_tree_all_data($book_link['menu_name'], $book_link);
$flat[$book_link['mlid']] = array();
_book_flatten_menu($tree, $flat[$book_link['mlid']]);
}
return $flat[$book_link['mlid']];
}
function _book_flatten_menu($tree, &$flat) {
foreach ($tree as $data) {
if (!$data['link']['hidden']) {
$flat[$data['link']['mlid']] = $data['link'];
if ($data['below']) {
_book_flatten_menu($data['below'], $flat);
}
}
}
}
function book_prev($book_link) {
if ($book_link['plid'] == 0) {
return NULL;
}
$flat = book_get_flat_menu($book_link);
$curr = NULL;
do {
$prev = $curr;
list($key, $curr) = each($flat);
} while ($key && $key != $book_link['mlid']);
if ($key == $book_link['mlid']) {
if ($prev['depth'] == $book_link['depth'] && $prev['has_children']) {
$data = array_shift(book_menu_subtree_data($prev));
while ($data['below']) {
$data = end($data['below']);
}
return $data['link'];
}
else {
return $prev;
}
}
}
function book_next($book_link) {
$flat = book_get_flat_menu($book_link);
do {
list($key, $curr) = each($flat);
} while ($key && $key != $book_link['mlid']);
if ($key == $book_link['mlid']) {
return current($flat);
}
}
function book_children($book_link) {
$flat = book_get_flat_menu($book_link);
$children = array();
if ($book_link['has_children']) {
do {
$link = array_shift($flat);
} while ($link && ($link['mlid'] != $book_link['mlid']));
while (($link = array_shift($flat)) && $link['plid'] == $book_link['mlid']) {
$data['link'] = $link;
$data['below'] = '';
$children[] = $data;
}
}
return $children ? menu_tree_output($children) : '';
}
function book_menu_name($bid) {
return 'book-toc-'. $bid;
}
function book_build_active_trail($book_link) {
static $trail;
if (!isset($trail)) {
$trail = array();
$trail[] = array('title' => t('Home'), 'href' => '<front>', 'localized_options' => array());
$tree = menu_tree_all_data($book_link['menu_name'], $book_link);
$curr = array_shift($tree);
while ($curr) {
if ($curr['link']['href'] == $book_link['href']) {
$trail[] = $curr['link'];
$curr = FALSE;
}
else {
if ($curr['below'] && $curr['link']['in_active_trail']) {
$trail[] = $curr['link'];
$tree = $curr['below'];
}
$curr = array_shift($tree);
}
}
}
return $trail;
}
function book_nodeapi(&$node, $op, $teaser, $page) {
switch ($op) {
case 'load':
$info['book'] = db_fetch_array(db_query('SELECT * FROM {book} b INNER JOIN {menu_links} ml ON b.mlid = ml.mlid WHERE b.nid = %d', $node->nid));
if ($info['book']) {
$info['book']['href'] = $info['book']['link_path'];
$info['book']['title'] = $info['book']['link_title'];
$info['book']['options'] = unserialize($info['book']['options']);
return $info;
}
break;
case 'view':
if (!$teaser) {
if (!empty($node->book['bid']) && $node->build_mode == NODE_BUILD_NORMAL) {
$node->content['book_navigation'] = array(
'#value' => theme('book_navigation', $node->book),
'#weight' => 100,
);
if ($page) {
menu_set_active_trail(book_build_active_trail($node->book));
menu_set_active_menu_name($node->book['menu_name']);
}
}
}
break;
case 'presave':
if (!empty($node->book['bid']) && !user_access('administer nodes')) {
$node->revision = 1;
}
if (empty($node->nid)) {
$node->book['mlid'] = NULL;
}
break;
case 'insert':
case 'update':
if (!empty($node->book['bid'])) {
if ($node->book['bid'] == 'new') {
$node->book['bid'] = $node->nid;
}
$node->book['nid'] = $node->nid;
$node->book['menu_name'] = book_menu_name($node->book['bid']);
_book_update_outline($node);
}
break;
case 'delete':
if (!empty($node->book['bid'])) {
if ($node->nid == $node->book['bid']) {
$result = db_query("SELECT b.nid FROM {menu_links} ml INNER JOIN {book} b on b.mlid = ml.mlid WHERE ml.plid = %d", $node->book['mlid']);
while ($child = db_fetch_array($result)) {
$child_node = node_load($child['nid']);
$child_node->book['bid'] = $child_node->nid;
_book_update_outline($child_node);
}
}
menu_link_delete($node->book['mlid']);
db_query('DELETE FROM {book} WHERE mlid = %d', $node->book['mlid']);
}
break;
case 'prepare':
if (empty($node->book) && (user_access('add content to books') || user_access('administer book outlines'))) {
$node->book = array();
if (empty($node->nid) && isset($_GET['parent']) && is_numeric($_GET['parent'])) {
$parent = book_link_load($_GET['parent']);
if ($parent && $parent['access']) {
$node->book['bid'] = $parent['bid'];
$node->book['plid'] = $parent['mlid'];
$node->book['menu_name'] = $parent['menu_name'];
}
}
$node->book += _book_link_defaults(!empty($node->nid) ? $node->nid : 'new');
}
else {
if (isset($node->book['bid']) && !isset($node->book['original_bid'])) {
$node->book['original_bid'] = $node->book['bid'];
}
}
if (isset($node->book['bid']) && !isset($node->book['parent_depth_limit'])) {
$node->book['parent_depth_limit'] = _book_parent_depth_limit($node->book);
}
break;
}
}
function _book_parent_depth_limit($book_link) {
return MENU_MAX_DEPTH - 1 - (($book_link['mlid'] && $book_link['has_children']) ? menu_link_children_relative_depth($book_link) : 0);
}
function book_form_node_delete_confirm_alter(&$form, $form_state) {
$node = node_load($form['nid']['#value']);
if (isset($node->book) && $node->book['has_children']) {
$form['book_warning'] = array(
'#value' => '<p>'. t('%title is part of a book outline, and has associated child pages. If you proceed with deletion, the child pages will be relocated automatically.', array('%title' => $node->title)) .'</p>',
'#weight' => -10,
);
}
}
function _book_link_defaults($nid) {
return array('original_bid' => 0, 'menu_name' => '', 'nid' => $nid, 'bid' => 0, 'router_path' => 'node/%', 'plid' => 0, 'mlid' => 0, 'has_children' => 0, 'weight' => 0, 'module' => 'book', 'options' => array());
}
function template_preprocess_book_navigation(&$variables) {
$book_link = $variables['book_link'];
$variables['book_id'] = $book_link['bid'];
$variables['book_title'] = check_plain($book_link['link_title']);
$variables['book_url'] = 'node/'. $book_link['bid'];
$variables['current_depth'] = $book_link['depth'];
$variables['tree'] = '';
if ($book_link['mlid']) {
$variables['tree'] = book_children($book_link);
if ($prev = book_prev($book_link)) {
$prev_href = url($prev['href']);
drupal_add_link(array('rel' => 'prev', 'href' => $prev_href));
$variables['prev_url'] = $prev_href;
$variables['prev_title'] = check_plain($prev['title']);
}
if ($book_link['plid'] && $parent = book_link_load($book_link['plid'])) {
$parent_href = url($parent['href']);
drupal_add_link(array('rel' => 'up', 'href' => $parent_href));
$variables['parent_url'] = $parent_href;
$variables['parent_title'] = check_plain($parent['title']);
}
if ($next = book_next($book_link)) {
$next_href = url($next['href']);
drupal_add_link(array('rel' => 'next', 'href' => $next_href));
$variables['next_url'] = $next_href;
$variables['next_title'] = check_plain($next['title']);
}
}
$variables['has_links'] = FALSE;
$links = array('prev_url', 'prev_title', 'parent_url', 'parent_title', 'next_url', 'next_title');
foreach ($links as $link) {
if (isset($variables[$link])) {
$variables['has_links'] = TRUE;
}
else {
$variables[$link] = '';
}
}
}
function _book_toc_recurse($tree, $indent, &$toc, $exclude, $depth_limit) {
foreach ($tree as $data) {
if ($data['link']['depth'] > $depth_limit) {
break;
}
if (!in_array($data['link']['mlid'], $exclude)) {
$toc[$data['link']['mlid']] = $indent .' '. truncate_utf8($data['link']['title'], 30, TRUE, TRUE);
if ($data['below']) {
_book_toc_recurse($data['below'], $indent .'--', $toc, $exclude, $depth_limit);
}
}
}
}
function book_toc($bid, $exclude = array(), $depth_limit) {
$tree = menu_tree_all_data(book_menu_name($bid));
$toc = array();
_book_toc_recurse($tree, '', $toc, $exclude, $depth_limit);
return $toc;
}
function template_preprocess_book_export_html(&$variables) {
global $base_url, $language;
$variables['title'] = check_plain($variables['title']);
$variables['base_url'] = $base_url;
$variables['language'] = $language;
$variables['language_rtl'] = ($language->direction == LANGUAGE_RTL);
$variables['head'] = drupal_get_html_head();
}
function book_export_traverse($tree, $visit_func) {
$output = '';
foreach ($tree as $data) {
if ($node = node_load($data['link']['nid'], FALSE)) {
$children = '';
if ($data['below']) {
$children = book_export_traverse($data['below'], $visit_func);
}
if (function_exists($visit_func)) {
$output .= call_user_func($visit_func, $node, $children);
}
else {
$output .= book_node_export($node, $children);
}
}
}
return $output;
}
function book_node_export($node, $children = '') {
$node->build_mode = NODE_BUILD_PRINT;
$node = node_build_content($node, FALSE, FALSE);
$node->body = drupal_render($node->content);
return theme('book_node_export_html', $node, $children);
}
function template_preprocess_book_node_export_html(&$variables) {
$variables['depth'] = $variables['node']->book['depth'];
$variables['title'] = check_plain($variables['node']->title);
$variables['content'] = $variables['node']->body;
}
function book_type_is_allowed($type) {
return in_array($type, variable_get('book_allowed_types', array('book')));
}
function book_node_type($op, $type) {
switch ($op) {
case 'update':
if (!empty($type->old_type) && $type->old_type != $type->type) {
$allowed_types = variable_get('book_allowed_types', array('book'));
$key = array_search($type->old_type, $allowed_types);
if ($key !== FALSE) {
$allowed_types[$type->type] = $allowed_types[$key] ? $type->type : 0;
unset($allowed_types[$key]);
variable_set('book_allowed_types', $allowed_types);
}
if (variable_get('book_child_type', 'book') == $type->old_type) {
variable_set('book_child_type', $type->type);
}
}
break;
}
}
function book_help($path, $arg) {
switch ($path) {
case 'admin/help#book':
$output = '<p>'. t('The book module is suited for creating structured, multi-page hypertexts such as site resource guides, manuals, and Frequently Asked Questions (FAQs). It permits a document to have chapters, sections, subsections, etc. Authors with suitable permissions can add pages to a collaborative book, placing them into the existing document by adding them to a table of contents menu.') .'</p>';
$output .= '<p>'. t('Pages in the book hierarchy have navigation elements at the bottom of the page for moving through the text. These links lead to the previous and next pages in the book, and to the level above the current page in the book\'s structure. More comprehensive navigation may be provided by enabling the <em>book navigation block</em> on the <a href="@admin-block">blocks administration page</a>.', array('@admin-block' => url('admin/build/block'))) .'</p>';
$output .= '<p>'. t('Users can select the <em>printer-friendly version</em> link visible at the bottom of a book page to generate a printer-friendly display of the page and all of its subsections. ') .'</p>';
$output .= '<p>'. t("Users with the <em>administer book outlines</em> permission can add a post of any content type to a book, by selecting the appropriate book while editing the post or by using the interface available on the post's <em>outline</em> tab.") .'</p>';
$output .= '<p>'. t('Administrators can view a list of all books on the <a href="@admin-node-book">book administration page</a>. The <em>Outline</em> page for each book allows section titles to be edited or rearranged.', array('@admin-node-book' => url('admin/content/book'))) .'</p>';
$output .= '<p>'. t('For more information, see the online handbook entry for <a href="@book">Book module</a>.', array('@book' => 'http://drupal.org/handbook/modules/book/')) .'</p>';
return $output;
case 'admin/content/book':
return '<p>'. t('The book module offers a means to organize a collection of related posts, collectively known as a book. When viewed, these posts automatically display links to adjacent book pages, providing a simple navigation system for creating and reviewing structured content.') .'</p>';
case 'node/%/outline':
return '<p>'. t('The outline feature allows you to include posts in the <a href="@book">book hierarchy</a>, as well as move them within the hierarchy or to <a href="@book-admin">reorder an entire book</a>.', array('@book' => url('book'), '@book-admin' => url('admin/content/book'))) .'</p>';
}
}
function book_link_load($mlid) {
if ($item = db_fetch_array(db_query("SELECT * FROM {menu_links} ml INNER JOIN {book} b ON b.mlid = ml.mlid LEFT JOIN {menu_router} m ON m.path = ml.router_path WHERE ml.mlid = %d", $mlid))) {
_menu_link_translate($item);
return $item;
}
return FALSE;
}
function book_menu_subtree_data($item) {
static $tree = array();
$cid = 'links:'. $item['menu_name'] .':subtree-cid:'. $item['mlid'];
if (!isset($tree[$cid])) {
$cache = cache_get($cid, 'cache_menu');
if ($cache && isset($cache->data)) {
$cache = cache_get($cache->data, 'cache_menu');
if ($cache && isset($cache->data)) {
$data = $cache->data;
}
}
if (!isset($data)) {
$match = array("menu_name = '%s'");
$args = array($item['menu_name']);
$i = 1;
while ($i <= MENU_MAX_DEPTH && $item["p$i"]) {
$match[] = "p$i = %d";
$args[] = $item["p$i"];
$i++;
}
$sql = "
SELECT b.*, m.load_functions, m.to_arg_functions, m.access_callback, m.access_arguments, m.page_callback, m.page_arguments, m.title, m.title_callback, m.title_arguments, m.type, ml.*
FROM {menu_links} ml INNER JOIN {menu_router} m ON m.path = ml.router_path
INNER JOIN {book} b ON ml.mlid = b.mlid
WHERE ". implode(' AND ', $match) ."
ORDER BY p1 ASC, p2 ASC, p3 ASC, p4 ASC, p5 ASC, p6 ASC, p7 ASC, p8 ASC, p9 ASC";
$data['tree'] = menu_tree_data(db_query($sql, $args), array(), $item['depth']);
$data['node_links'] = array();
menu_tree_collect_node_links($data['tree'], $data['node_links']);
$tree_cid = 'links:'. $item['menu_name'] .':subtree-data:'. md5(serialize($data));
if (!cache_get($tree_cid, 'cache_menu')) {
cache_set($tree_cid, $data, 'cache_menu');
}
cache_set($cid, $tree_cid, 'cache_menu');
}
menu_tree_check_access($data['tree'], $data['node_links']);
$tree[$cid] = $data['tree'];
}
return $tree[$cid];
}