--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/modules/book/book.pages.inc	Tue Dec 23 14:28:28 2008 +0100
@@ -0,0 +1,263 @@
+<?php
+// $Id: book.pages.inc,v 1.5 2007/12/22 23:24:24 goba Exp $
+
+/**
+ * @file
+ * User page callbacks for the book module.
+ */
+
+/**
+ * Menu callback; prints a listing of all books.
+ */
+function book_render() {
+  $book_list = array();
+  foreach (book_get_books() as $book) {
+    $book_list[] = l($book['title'], $book['href'], $book['options']);
+  }
+
+  return theme('item_list', $book_list);
+}
+
+/**
+ * Menu callback; Generates various representation of a book page and its children.
+ *
+ * The function delegates the generation of output to helper functions.
+ * The function name is derived by prepending 'book_export_' to the
+ * given output type. So, e.g., a type of 'html' results in a call to
+ * the function book_export_html().
+ *
+ * @param $type
+ *   A string encoding the type of output requested. The following
+ *   types are currently supported in book module:
+ *
+ *   - html: HTML (printer friendly output)
+ *
+ *   Other types may be supported in contributed modules.
+ * @param $nid
+ *   An integer representing the node id (nid) of the node to export
+ * @return
+ *   A string representing the node and its children in the book hierarchy
+ *   in a format determined by the $type parameter.
+ */
+function book_export($type, $nid) {
+
+  $type = drupal_strtolower($type);
+
+  $export_function = 'book_export_'. $type;
+
+  if (function_exists($export_function)) {
+    print call_user_func($export_function, $nid);
+  }
+  else {
+    drupal_set_message(t('Unknown export format.'));
+    drupal_not_found();
+  }
+}
+
+/**
+ * This function is called by book_export() to generate HTML for export.
+ *
+ * The given node is /embedded to its absolute depth in a top level
+ * section/. For example, a child node with depth 2 in the hierarchy
+ * is contained in (otherwise empty) &lt;div&gt; elements
+ * corresponding to depth 0 and depth 1. This is intended to support
+ * WYSIWYG output - e.g., level 3 sections always look like level 3
+ * sections, no matter their depth relative to the node selected to be
+ * exported as printer-friendly HTML.
+ *
+ * @param $nid
+ *   An integer representing the node id (nid) of the node to export.
+ * @return
+ *   A string containing HTML representing the node and its children in
+ *   the book hierarchy.
+ */
+function book_export_html($nid) {
+  if (user_access('access printer-friendly version')) {
+    $export_data = array();
+    $node = node_load($nid);
+    if (isset($node->book)) {
+      $tree = book_menu_subtree_data($node->book);
+      $contents = book_export_traverse($tree, 'book_node_export');
+    }
+    return theme('book_export_html', $node->title, $contents, $node->book['depth']);
+  }
+  else {
+    drupal_access_denied();
+  }
+}
+
+/**
+ * Menu callback; show the outline form for a single node.
+ */
+function book_outline($node) {
+  drupal_set_title(check_plain($node->title));
+  return drupal_get_form('book_outline_form', $node);
+}
+
+/**
+ * Build the form to handle all book outline operations via the outline tab.
+ *
+ * @see book_outline_form_submit()
+ * @see book_remove_button_submit()
+ *
+ * @ingroup forms
+ */
+function book_outline_form(&$form_state, $node) {
+
+  if (!isset($node->book)) {
+    // The node is not part of any book yet - set default options.
+    $node->book = _book_link_defaults($node->nid);
+  }
+  else {
+    $node->book['original_bid'] = $node->book['bid'];
+  }
+  // Find the depth limit for the parent select.
+  if (!isset($node->book['parent_depth_limit'])) {
+    $node->book['parent_depth_limit'] = _book_parent_depth_limit($node->book);
+  }
+  $form['#node'] = $node;
+  $form['#id'] = 'book-outline';
+  _book_add_form_elements($form, $node);
+
+  $form['book']['#collapsible'] = FALSE;
+
+  $form['update'] = array(
+    '#type' => 'submit',
+    '#value' => $node->book['original_bid'] ? t('Update book outline') : t('Add to book outline'),
+    '#weight' => 15,
+  );
+
+  $form['remove'] = array(
+    '#type' => 'submit',
+    '#value' => t('Remove from book outline'),
+    '#access' => $node->nid != $node->book['bid'] && $node->book['bid'],
+    '#weight' => 20,
+    '#submit' => array('book_remove_button_submit'),
+  );
+
+  return $form;
+}
+
+/**
+ * Button submit function to redirect to removal confirm form.
+ *
+ * @see book_outline_form()
+ */
+function book_remove_button_submit($form, &$form_state) {
+  $form_state['redirect'] = 'node/'. $form['#node']->nid .'/outline/remove';
+}
+
+/**
+ * Handles book outline form submissions from the outline tab.
+ *
+ * @see book_outline_form()
+ */
+function book_outline_form_submit($form, &$form_state) {
+  $node = $form['#node'];
+  $form_state['redirect'] = "node/". $node->nid;
+  $book_link = $form_state['values']['book'];
+  if (!$book_link['bid']) {
+    drupal_set_message(t('No changes were made'));
+    return;
+  }
+
+  $book_link['menu_name'] = book_menu_name($book_link['bid']);
+  $node->book = $book_link;
+  if (_book_update_outline($node)) {
+    if ($node->book['parent_mismatch']) {
+      // This will usually only happen when JS is disabled.
+      drupal_set_message(t('The post has been added to the selected book. You may now position it relative to other pages.'));
+      $form_state['redirect'] = "node/". $node->nid ."/outline";
+    }
+    else {
+      drupal_set_message(t('The book outline has been updated.'));
+    }
+  }
+  else {
+    drupal_set_message(t('There was an error adding the post to the book.'), 'error');
+  }
+}
+
+/**
+ * Menu callback; builds a form to confirm removal of a node from the book.
+ *
+ * @see book_remove_form_submit()
+ *
+ * @ingroup forms
+ */
+function book_remove_form(&$form_state, $node) {
+  $form['#node'] = $node;
+  $title = array('%title' => $node->title);
+
+  if ($node->book['has_children']) {
+    $description = t('%title has associated child pages, which will be relocated automatically to maintain their connection to the book. To recreate the hierarchy (as it was before removing this page), %title may be added again using the Outline tab, and each of its former child pages will need to be relocated manually.', $title);
+  }
+  else {
+    $description = t('%title may be added to hierarchy again using the Outline tab.', $title);
+  }
+
+  return confirm_form($form, t('Are you sure you want to remove %title from the book hierarchy?', $title), 'node/'. $node->nid, $description, t('Remove'));
+}
+
+/**
+ * Confirm form submit function to remove a node from the book.
+ *
+ * @see book_remove_form()
+ */
+function book_remove_form_submit($form, &$form_state) {
+  $node = $form['#node'];
+  if ($node->nid != $node->book['bid']) {
+    // Only allowed when this is not a book (top-level page).
+    menu_link_delete($node->book['mlid']);
+    db_query('DELETE FROM {book} WHERE nid = %d', $node->nid);
+    drupal_set_message(t('The post has been removed from the book.'));
+  }
+  $form_state['redirect'] = 'node/'. $node->nid;
+}
+
+/**
+ * AJAX callback to replace the book parent select options.
+ *
+ * This function is called when the selected book is changed.  It updates the
+ * cached form (either the node form or the book outline form) and returns
+ * rendered output to be used to replace the select containing the possible
+ * parent pages in the newly selected book.
+ *
+ * @param $build_id
+ *   The form's build_id.
+ * @param $bid
+ *   A bid from from among those in the form's book select.
+ * @return
+ *   Prints the replacement HTML in JSON format.
+ */
+function book_form_update() {
+  $cid = 'form_'. $_POST['form_build_id'];
+  $bid = $_POST['book']['bid'];
+  $cache = cache_get($cid, 'cache_form');
+  if ($cache) {
+    $form = $cache->data;
+
+    // Validate the bid.
+    if (isset($form['book']['bid']['#options'][$bid])) {
+      $book_link = $form['#node']->book;
+      $book_link['bid'] = $bid;
+      // Get the new options and update the cache.
+      $form['book']['plid'] = _book_parent_select($book_link);
+      cache_set($cid, $form, 'cache_form', $cache->expire);
+
+      // Build and render the new select element, then return it in JSON format.
+      $form_state = array();
+      $form['#post'] = array();
+      $form = form_builder($form['form_id']['#value'] , $form, $form_state);
+      $output = drupal_render($form['book']['plid']);
+      drupal_json(array('status' => TRUE, 'data' => $output));
+    }
+    else {
+      drupal_json(array('status' => FALSE, 'data' => ''));
+    }
+  }
+  else {
+    drupal_json(array('status' => FALSE, 'data' => ''));
+  }
+  exit();
+}