--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/book/book.admin.inc	Tue Dec 23 14:28:28 2008 +0100
@@ -0,0 +1,250 @@
+<?php
+// $Id: book.admin.inc,v 1.8 2008/01/08 10:35:41 goba Exp $
+
+/**
+ * @file
+ * Admin page callbacks for the book module.
+ */
+
+/**
+ * Returns an administrative overview of all books.
+ */
+function book_admin_overview() {
+  $rows = array();
+  foreach (book_get_books() as $book) {
+    $rows[] = array(l($book['title'], $book['href'], $book['options']), l(t('edit order and titles'), "admin/content/book/". $book['nid']));
+  }
+  $headers = array(t('Book'), t('Operations'));
+
+  return theme('table', $headers, $rows);
+}
+
+/**
+ * Builds and returns the book settings form.
+ *
+ * @see book_admin_settings_validate()
+ *
+ * @ingroup forms
+ */
+function book_admin_settings() {
+  $types = node_get_types('names');
+  $form['book_allowed_types'] = array(
+    '#type' => 'checkboxes',
+    '#title' => t('Allowed book outline types'),
+    '#default_value' => variable_get('book_allowed_types', array('book')),
+    '#options' => $types,
+    '#description' => t('Select content types which users with the %add-perm permission will be allowed to add to the book hierarchy. Users with the %outline-perm permission can add all content types.', array('%add-perm' => t('add content to books'),  '%outline-perm' => t('administer book outlines'))),
+    '#required' => TRUE,
+  );
+  $form['book_child_type'] = array(
+    '#type' => 'radios',
+    '#title' => t('Default child page type'),
+    '#default_value' => variable_get('book_child_type', 'book'),
+    '#options' => $types,
+    '#description' => t('The content type for the %add-child link must be one of those selected as an allowed book outline type.', array('%add-child' => t('Add child page'))),
+    '#required' => TRUE,
+  );
+  $form['array_filter'] = array('#type' => 'value', '#value' => TRUE);
+  $form['#validate'][] = 'book_admin_settings_validate';
+  return system_settings_form($form);
+}
+
+/**
+ * Validate the book settings form.
+ *
+ * @see book_admin_settings()
+ */
+function book_admin_settings_validate($form, &$form_state) {
+  $child_type = $form_state['values']['book_child_type'];
+  if (empty($form_state['values']['book_allowed_types'][$child_type])) {
+    form_set_error('book_child_type', t('The content type for the %add-child link must be one of those selected as an allowed book outline type.', array('%add-child' => t('Add child page'))));
+  }
+}
+
+/**
+ * Build the form to administrate the hierarchy of a single book.
+ *
+ * @see book_admin_edit_submit()
+ *
+ * @ingroup forms.
+ */
+function book_admin_edit($form_state, $node) {
+  drupal_set_title(check_plain($node->title));
+  $form = array();
+  $form['#node'] = $node;
+  $form['table'] = _book_admin_table($node);
+  $form['save'] = array(
+    '#type' => 'submit',
+    '#value' => t('Save book pages'),
+  );
+  return $form;
+}
+
+/**
+ * Handle submission of the book administrative page form.
+ *
+ * This function takes care to save parent menu items before their children.
+ * Saving menu items in the incorrect order can break the menu tree.
+ *
+ * @see book_admin_edit()
+ * @see menu_overview_form_submit()
+ */
+function book_admin_edit_submit($form, &$form_state) {
+  // Save elements in the same order as defined in post rather than the form.
+  // This ensures parents are updated before their children, preventing orphans.
+  $order = array_flip(array_keys($form['#post']['table']));
+  $form['table'] = array_merge($order, $form['table']);
+
+  foreach (element_children($form['table']) as $key) {
+    if ($form['table'][$key]['#item']) {
+      $row = $form['table'][$key];
+      $values = $form_state['values']['table'][$key];
+
+      // Update menu item if moved.
+      if ($row['plid']['#default_value'] != $values['plid'] || $row['weight']['#default_value'] != $values['weight']) {
+        $row['#item']['plid'] = $values['plid'];
+        $row['#item']['weight'] = $values['weight'];
+        menu_link_save($row['#item']);
+      }
+
+      // Update the title if changed.
+      if ($row['title']['#default_value'] != $values['title']) {
+        $node = node_load($values['nid'], FALSE);
+        $node->title = $values['title'];
+        $node->book['link_title'] = $values['title'];
+        $node->revision = 1;
+        $node->log = t('Title changed from %original to %current.', array('%original' => $node->title, '%current' => $values['title']));
+        node_save($node);
+        watchdog('content', 'book: updated %title.', array('%title' => $node->title), WATCHDOG_NOTICE, l(t('view'), 'node/'. $node->nid));
+      }
+    }
+  }
+
+  drupal_set_message(t('Updated book %title.', array('%title' => $form['#node']->title)));
+}
+
+/**
+ * Build the table portion of the form for the book administration page.
+ *
+ * @see book_admin_edit()
+ */
+function _book_admin_table($node) {
+  $form = array(
+    '#theme' => 'book_admin_table',
+    '#tree' => TRUE,
+  );
+
+  $tree = book_menu_subtree_data($node->book);
+  $tree = array_shift($tree); // Do not include the book item itself.
+  if ($tree['below']) {
+    _book_admin_table_tree($tree['below'], $form);
+  }
+  return $form;
+}
+
+/**
+ * Recursive helper to build the main table in the book administration page form.
+ *
+ * @see book_admin_edit()
+ */
+function _book_admin_table_tree($tree, &$form) {
+  foreach ($tree as $key => $data) {
+    $form[$key] = array(
+      '#item' => $data['link'],
+      'nid' => array('#type' => 'value', '#value' => $data['link']['nid']),
+      'depth' => array('#type' => 'value', '#value' => $data['link']['depth']),
+      'href' => array('#type' => 'value', '#value' => $data['link']['href']),
+      'title' => array(
+        '#type' => 'textfield',
+        '#default_value' => $data['link']['link_title'],
+        '#maxlength' => 255,
+        '#size' => 40,
+      ),
+      'weight' => array(
+        '#type' => 'weight',
+        '#default_value' => $data['link']['weight'],
+        '#delta' => 15,
+      ),
+      'plid' => array(
+        '#type' => 'textfield',
+        '#default_value' => $data['link']['plid'],
+        '#size' => 6,
+      ),
+      'mlid' => array(
+        '#type' => 'hidden',
+        '#default_value' => $data['link']['mlid'],
+      ),
+    );
+    if ($data['below']) {
+      _book_admin_table_tree($data['below'], $form);
+    }
+  }
+
+  return $form;
+}
+
+/**
+ * Theme function for the book administration page form.
+ *
+ * @ingroup themeable
+ * @see book_admin_table()
+ */
+function theme_book_admin_table($form) {
+  drupal_add_tabledrag('book-outline', 'match', 'parent', 'book-plid', 'book-plid', 'book-mlid', TRUE, MENU_MAX_DEPTH - 2);
+  drupal_add_tabledrag('book-outline', 'order', 'sibling', 'book-weight');
+
+  $header = array(t('Title'), t('Weight'), t('Parent'), array('data' => t('Operations'), 'colspan' => '3'));
+
+  $rows = array();
+  $destination = drupal_get_destination();
+  $access = user_access('administer nodes');
+  foreach (element_children($form) as $key) {
+    $nid = $form[$key]['nid']['#value'];
+    $href = $form[$key]['href']['#value'];
+
+    // Add special classes to be used with tabledrag.js.
+    $form[$key]['plid']['#attributes']['class'] = 'book-plid';
+    $form[$key]['mlid']['#attributes']['class'] = 'book-mlid';
+    $form[$key]['weight']['#attributes']['class'] = 'book-weight';
+
+    $data = array(
+      theme('indentation', $form[$key]['depth']['#value'] - 2) . drupal_render($form[$key]['title']),
+      drupal_render($form[$key]['weight']),
+      drupal_render($form[$key]['plid']) . drupal_render($form[$key]['mlid']),
+      l(t('view'), $href),
+      $access ? l(t('edit'), 'node/'. $nid .'/edit', array('query' => $destination)) : '&nbsp',
+      $access ? l(t('delete'), 'node/'. $nid .'/delete', array('query' => $destination) )  : '&nbsp',
+    );
+    $row = array('data' => $data);
+    if (isset($form[$key]['#attributes'])) {
+      $row = array_merge($row, $form[$key]['#attributes']);
+    }
+    $row['class'] = empty($row['class']) ? 'draggable' : $row['class'] .' draggable';
+    $rows[] = $row;
+  }
+
+  return theme('table', $header, $rows, array('id' => 'book-outline'));
+}
+
+/**
+ * Recursive helper to sort each layer of a book tree by weight.
+ */
+function _book_admin_sort_tree(&$tree) {
+  uasort($tree, '_book_admin_compare');
+  foreach ($tree as $key => $subtree) {
+    if (!empty($tree[$key]['below'])) {
+      _book_admin_sort_tree($tree[$key]['below']);
+    }
+  }
+}
+
+/**
+ * Used by uasort() in _book_admin_sort_tree() to compare items in a book tree.
+ */
+function _book_admin_compare($a, $b) {
+  $weight = $a['link']['weight'] - $b['link']['weight'];
+  if ($weight) {
+    return $weight;
+  }
+  return strncmp($a['link']['title'], $b['link']['title']);
+}