Initial code using Drupal 6.38
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4824608a33
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266
modules/book/book.pages.inc
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266
modules/book/book.pages.inc
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<?php
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/**
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* @file
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* User page callbacks for the book module.
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*/
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/**
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* Menu callback; prints a listing of all books.
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*/
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function book_render() {
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$book_list = array();
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foreach (book_get_books() as $book) {
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$book_list[] = l($book['title'], $book['href'], $book['options']);
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}
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return theme('item_list', $book_list);
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}
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/**
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* Menu callback; Generates various representation of a book page and its children.
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*
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* The function delegates the generation of output to helper functions.
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* The function name is derived by prepending 'book_export_' to the
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* given output type. So, e.g., a type of 'html' results in a call to
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* the function book_export_html().
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*
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* @param $type
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* A string encoding the type of output requested. The following
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* types are currently supported in book module:
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*
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* - html: HTML (printer friendly output)
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*
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* Other types may be supported in contributed modules.
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* @param $nid
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* An integer representing the node id (nid) of the node to export
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* @return
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* A string representing the node and its children in the book hierarchy
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* in a format determined by the $type parameter.
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*/
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function book_export($type, $nid) {
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// Check that the node exists and that the current user has access to it.
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$node = node_load($nid);
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if (!$node) {
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return MENU_NOT_FOUND;
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}
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if (!node_access('view', $node)) {
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return MENU_ACCESS_DENIED;
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}
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$type = drupal_strtolower($type);
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$export_function = 'book_export_'. $type;
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if (function_exists($export_function)) {
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print call_user_func($export_function, $nid);
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}
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else {
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drupal_set_message(t('Unknown export format.'));
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drupal_not_found();
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}
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}
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/**
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* This function is called by book_export() to generate HTML for export.
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*
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* The given node is /embedded to its absolute depth in a top level
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* section/. For example, a child node with depth 2 in the hierarchy
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* is contained in (otherwise empty) <div> elements
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* corresponding to depth 0 and depth 1. This is intended to support
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* WYSIWYG output - e.g., level 3 sections always look like level 3
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* sections, no matter their depth relative to the node selected to be
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* exported as printer-friendly HTML.
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*
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* @param $nid
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* An integer representing the node id (nid) of the node to export.
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* @return
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* A string containing HTML representing the node and its children in
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* the book hierarchy.
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*/
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function book_export_html($nid) {
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if (user_access('access printer-friendly version')) {
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$export_data = array();
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$node = node_load($nid);
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if (isset($node->book)) {
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$tree = book_menu_subtree_data($node->book);
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$contents = book_export_traverse($tree, 'book_node_export');
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return theme('book_export_html', $node->title, $contents, $node->book['depth']);
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}
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else {
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drupal_not_found();
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}
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}
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else {
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drupal_access_denied();
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}
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}
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/**
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* Menu callback; show the outline form for a single node.
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*/
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function book_outline($node) {
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drupal_set_title(check_plain($node->title));
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return drupal_get_form('book_outline_form', $node);
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}
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/**
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* Build the form to handle all book outline operations via the outline tab.
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*
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* @see book_outline_form_submit()
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* @see book_remove_button_submit()
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*
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* @ingroup forms
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*/
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function book_outline_form(&$form_state, $node) {
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if (!isset($node->book)) {
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// The node is not part of any book yet - set default options.
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$node->book = _book_link_defaults($node->nid);
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}
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else {
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$node->book['original_bid'] = $node->book['bid'];
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}
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// Find the depth limit for the parent select.
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if (!isset($node->book['parent_depth_limit'])) {
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$node->book['parent_depth_limit'] = _book_parent_depth_limit($node->book);
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}
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$form['#node'] = $node;
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$form['#id'] = 'book-outline';
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_book_add_form_elements($form, $node);
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$form['book']['#collapsible'] = FALSE;
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$form['update'] = array(
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'#type' => 'submit',
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'#value' => $node->book['original_bid'] ? t('Update book outline') : t('Add to book outline'),
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'#weight' => 15,
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);
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$form['remove'] = array(
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'#type' => 'submit',
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'#value' => t('Remove from book outline'),
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'#access' => $node->nid != $node->book['bid'] && $node->book['bid'],
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'#weight' => 20,
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'#submit' => array('book_remove_button_submit'),
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);
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return $form;
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}
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/**
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* Button submit function to redirect to removal confirm form.
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*
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* @see book_outline_form()
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*/
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function book_remove_button_submit($form, &$form_state) {
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$form_state['redirect'] = 'node/'. $form['#node']->nid .'/outline/remove';
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}
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/**
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* Handles book outline form submissions from the outline tab.
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*
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* @see book_outline_form()
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*/
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function book_outline_form_submit($form, &$form_state) {
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$node = $form['#node'];
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$form_state['redirect'] = "node/". $node->nid;
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$book_link = $form_state['values']['book'];
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if (!$book_link['bid']) {
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drupal_set_message(t('No changes were made'));
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return;
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}
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$book_link['menu_name'] = book_menu_name($book_link['bid']);
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$node->book = $book_link;
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if (_book_update_outline($node)) {
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if ($node->book['parent_mismatch']) {
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// This will usually only happen when JS is disabled.
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drupal_set_message(t('The post has been added to the selected book. You may now position it relative to other pages.'));
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$form_state['redirect'] = "node/". $node->nid ."/outline";
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}
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else {
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drupal_set_message(t('The book outline has been updated.'));
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}
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}
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else {
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drupal_set_message(t('There was an error adding the post to the book.'), 'error');
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}
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}
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/**
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* Menu callback; builds a form to confirm removal of a node from the book.
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*
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* @see book_remove_form_submit()
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*
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* @ingroup forms
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*/
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function book_remove_form(&$form_state, $node) {
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$form['#node'] = $node;
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$title = array('%title' => $node->title);
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if ($node->book['has_children']) {
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$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.', $title);
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}
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else {
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$description = t('%title may be added to hierarchy again using the Outline tab.', $title);
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}
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return confirm_form($form, t('Are you sure you want to remove %title from the book hierarchy?', $title), 'node/'. $node->nid, $description, t('Remove'));
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}
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/**
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* Confirm form submit function to remove a node from the book.
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*
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* @see book_remove_form()
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*/
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function book_remove_form_submit($form, &$form_state) {
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$node = $form['#node'];
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if ($node->nid != $node->book['bid']) {
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// Only allowed when this is not a book (top-level page).
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menu_link_delete($node->book['mlid']);
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db_query('DELETE FROM {book} WHERE nid = %d', $node->nid);
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drupal_set_message(t('The post has been removed from the book.'));
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}
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$form_state['redirect'] = 'node/'. $node->nid;
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}
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/**
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* Renders a new parent page select element when the book selection changes.
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*
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* This function is called via AJAX when the selected book is changed on a node
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* or book outline form. It creates a new parent page select element, adds it
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* to the cached form, and then returns the rendered element so it can be
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* displayed on the form.
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*
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* @return
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* The rendered parent page select element.
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*/
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function book_form_update() {
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$bid = $_POST['book']['bid'];
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if ($form = form_get_cache($_POST['form_build_id'], $form_state)) {
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// Validate the bid.
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if (isset($form['book']['bid']['#options'][$bid])) {
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$book_link = $form['#node']->book;
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$book_link['bid'] = $bid;
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// Get the new options and update the cache.
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$form['book']['plid'] = _book_parent_select($book_link);
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form_set_cache($_POST['form_build_id'], $form, $form_state);
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// Build and render the new select element, then return it in JSON format.
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$form_state = array();
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$form['#post'] = array();
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$form = form_builder($form['form_id']['#value'] , $form, $form_state);
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$output = drupal_render($form['book']['plid']);
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drupal_json(array('status' => TRUE, 'data' => $output));
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}
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else {
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drupal_json(array('status' => FALSE, 'data' => ''));
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}
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}
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else {
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drupal_json(array('status' => FALSE, 'data' => ''));
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}
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exit();
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}
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