webmaster@1: <?php
webmaster@11: // $Id: node.pages.inc,v 1.28.2.2 2008/09/17 07:42:35 goba Exp $
webmaster@1: 
webmaster@1: /**
webmaster@1:  * @file
webmaster@1:  * Page callbacks for adding, editing, deleting, and revisions management for content.
webmaster@1:  */
webmaster@1: 
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Menu callback; presents the node editing form, or redirects to delete confirmation.
webmaster@1:  */
webmaster@1: function node_page_edit($node) {
webmaster@3:   drupal_set_title(check_plain($node->title));
webmaster@1:   return drupal_get_form($node->type .'_node_form', $node);
webmaster@1: }
webmaster@1: 
webmaster@1: function node_add_page() {
webmaster@1:   $item = menu_get_item();
webmaster@1:   $content = system_admin_menu_block($item);
webmaster@1:   return theme('node_add_list', $content);
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Display the list of available node types for node creation.
webmaster@1:  *
webmaster@1:  * @ingroup themeable
webmaster@1:  */
webmaster@1: function theme_node_add_list($content) {
webmaster@1:   $output = '';
webmaster@1: 
webmaster@1:   if ($content) {
webmaster@1:     $output = '<dl class="node-type-list">';
webmaster@1:     foreach ($content as $item) {
webmaster@1:       $output .= '<dt>'. l($item['title'], $item['href'], $item['options']) .'</dt>';
webmaster@1:       $output .= '<dd>'. filter_xss_admin($item['description']) .'</dd>';
webmaster@1:     }
webmaster@1:     $output .= '</dl>';
webmaster@1:   }
webmaster@1:   return $output;
webmaster@1: }
webmaster@1: 
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Present a node submission form or a set of links to such forms.
webmaster@1:  */
webmaster@1: function node_add($type) {
webmaster@1:   global $user;
webmaster@1: 
webmaster@1:   $types = node_get_types();
webmaster@1:   $type = isset($type) ? str_replace('-', '_', $type) : NULL;
webmaster@1:   // If a node type has been specified, validate its existence.
webmaster@1:   if (isset($types[$type]) && node_access('create', $type)) {
webmaster@1:     // Initialize settings:
webmaster@1:     $node = array('uid' => $user->uid, 'name' => (isset($user->name) ? $user->name : ''), 'type' => $type, 'language' => '');
webmaster@1: 
webmaster@1:     drupal_set_title(t('Create @name', array('@name' => $types[$type]->name)));
webmaster@1:     $output = drupal_get_form($type .'_node_form', $node);
webmaster@1:   }
webmaster@1: 
webmaster@1:   return $output;
webmaster@1: }
webmaster@1: 
webmaster@1: function node_form_validate($form, &$form_state) {
webmaster@1:   node_validate($form_state['values'], $form);
webmaster@1: }
webmaster@1: 
webmaster@1: function node_object_prepare(&$node) {
webmaster@1:   // Set up default values, if required.
webmaster@1:   $node_options = variable_get('node_options_'. $node->type, array('status', 'promote'));
webmaster@1:   // If this is a new node, fill in the default values.
webmaster@1:   if (!isset($node->nid)) {
webmaster@1:     foreach (array('status', 'promote', 'sticky') as $key) {
webmaster@1:       $node->$key = in_array($key, $node_options);
webmaster@1:     }
webmaster@1:     global $user;
webmaster@1:     $node->uid = $user->uid;
webmaster@1:     $node->created = time();
webmaster@1:   }
webmaster@1:   else {
webmaster@1:     $node->date = format_date($node->created, 'custom', 'Y-m-d H:i:s O');
webmaster@1:   }
webmaster@1:   // Always use the default revision setting.
webmaster@1:   $node->revision = in_array('revision', $node_options);
webmaster@1: 
webmaster@1:   node_invoke($node, 'prepare');
webmaster@1:   node_invoke_nodeapi($node, 'prepare');
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Generate the node add/edit form array.
webmaster@1:  */
webmaster@1: function node_form(&$form_state, $node) {
webmaster@1:   global $user;
webmaster@1: 
webmaster@1:   if (isset($form_state['node'])) {
webmaster@1:     $node = $form_state['node'] + (array)$node;
webmaster@1:   }
webmaster@1:   if (isset($form_state['node_preview'])) {
webmaster@1:     $form['#prefix'] = $form_state['node_preview'];
webmaster@1:   }
webmaster@1:   $node = (object)$node;
webmaster@1:   foreach (array('body', 'title', 'format') as $key) {
webmaster@1:     if (!isset($node->$key)) {
webmaster@1:       $node->$key = NULL;
webmaster@1:     }
webmaster@1:   }
webmaster@1:   if (!isset($form_state['node_preview'])) {
webmaster@1:     node_object_prepare($node);
webmaster@1:   }
webmaster@1:   else {
webmaster@1:     $node->build_mode = NODE_BUILD_PREVIEW;
webmaster@1:   }
webmaster@1: 
webmaster@1:   // Set the id of the top-level form tag
webmaster@1:   $form['#id'] = 'node-form';
webmaster@1: 
webmaster@1:   // Basic node information.
webmaster@1:   // These elements are just values so they are not even sent to the client.
webmaster@1:   foreach (array('nid', 'vid', 'uid', 'created', 'type', 'language') as $key) {
webmaster@1:     $form[$key] = array(
webmaster@1:       '#type' => 'value',
webmaster@1:       '#value' => isset($node->$key) ? $node->$key : NULL,
webmaster@1:     );
webmaster@1:   }
webmaster@1: 
webmaster@1:   // Changed must be sent to the client, for later overwrite error checking.
webmaster@1:   $form['changed'] = array(
webmaster@1:     '#type' => 'hidden',
webmaster@1:     '#default_value' => isset($node->changed) ? $node->changed : NULL,
webmaster@1:   );
webmaster@1:   // Get the node-specific bits.
webmaster@1:   if ($extra = node_invoke($node, 'form', $form_state)) {
webmaster@1:     $form = array_merge_recursive($form, $extra);
webmaster@1:   }
webmaster@1:   if (!isset($form['title']['#weight'])) {
webmaster@1:     $form['title']['#weight'] = -5;
webmaster@1:   }
webmaster@1: 
webmaster@1:   $form['#node'] = $node;
webmaster@1: 
webmaster@1:   // Add a log field if the "Create new revision" option is checked, or if the
webmaster@1:   // current user has the ability to check that option.
webmaster@1:   if (!empty($node->revision) || user_access('administer nodes')) {
webmaster@1:     $form['revision_information'] = array(
webmaster@1:       '#type' => 'fieldset',
webmaster@1:       '#title' => t('Revision information'),
webmaster@1:       '#collapsible' => TRUE,
webmaster@1:       // Collapsed by default when "Create new revision" is unchecked
webmaster@1:       '#collapsed' => !$node->revision,
webmaster@1:       '#weight' => 20,
webmaster@1:     );
webmaster@1:     $form['revision_information']['revision'] = array(
webmaster@1:       '#access' => user_access('administer nodes'),
webmaster@1:       '#type' => 'checkbox',
webmaster@1:       '#title' => t('Create new revision'),
webmaster@1:       '#default_value' => $node->revision,
webmaster@1:     );
webmaster@1:     $form['revision_information']['log'] = array(
webmaster@1:       '#type' => 'textarea',
webmaster@1:       '#title' => t('Log message'),
webmaster@1:       '#rows' => 2,
webmaster@1:       '#description' => t('An explanation of the additions or updates being made to help other authors understand your motivations.'),
webmaster@1:     );
webmaster@1:   }
webmaster@1: 
webmaster@1:   // Node author information for administrators
webmaster@1:   $form['author'] = array(
webmaster@1:     '#type' => 'fieldset',
webmaster@1:     '#access' => user_access('administer nodes'),
webmaster@1:     '#title' => t('Authoring information'),
webmaster@1:     '#collapsible' => TRUE,
webmaster@1:     '#collapsed' => TRUE,
webmaster@1:     '#weight' => 20,
webmaster@1:   );
webmaster@1:   $form['author']['name'] = array(
webmaster@1:     '#type' => 'textfield',
webmaster@1:     '#title' => t('Authored by'),
webmaster@1:     '#maxlength' => 60,
webmaster@1:     '#autocomplete_path' => 'user/autocomplete',
webmaster@1:     '#default_value' => $node->name ? $node->name : '',
webmaster@1:     '#weight' => -1,
webmaster@1:     '#description' => t('Leave blank for %anonymous.', array('%anonymous' => variable_get('anonymous', t('Anonymous')))),
webmaster@1:   );
webmaster@1:   $form['author']['date'] = array(
webmaster@1:     '#type' => 'textfield',
webmaster@1:     '#title' => t('Authored on'),
webmaster@1:     '#maxlength' => 25,
webmaster@1:     '#description' => t('Format: %time. Leave blank to use the time of form submission.', array('%time' => !empty($node->date) ? $node->date : format_date($node->created, 'custom', 'Y-m-d H:i:s O'))),
webmaster@1:   );
webmaster@1: 
webmaster@1:   if (isset($node->date)) {
webmaster@1:     $form['author']['date']['#default_value'] = $node->date;
webmaster@1:   }
webmaster@1: 
webmaster@1:   // Node options for administrators
webmaster@1:   $form['options'] = array(
webmaster@1:     '#type' => 'fieldset',
webmaster@1:     '#access' => user_access('administer nodes'),
webmaster@1:     '#title' => t('Publishing options'),
webmaster@1:     '#collapsible' => TRUE,
webmaster@1:     '#collapsed' => TRUE,
webmaster@1:     '#weight' => 25,
webmaster@1:   );
webmaster@1:   $form['options']['status'] = array(
webmaster@1:     '#type' => 'checkbox',
webmaster@1:     '#title' => t('Published'),
webmaster@1:     '#default_value' => $node->status,
webmaster@1:   );
webmaster@1:   $form['options']['promote'] = array(
webmaster@1:     '#type' => 'checkbox',
webmaster@1:     '#title' => t('Promoted to front page'),
webmaster@1:     '#default_value' => $node->promote,
webmaster@1:   );
webmaster@1:   $form['options']['sticky'] = array(
webmaster@1:     '#type' => 'checkbox',
webmaster@1:     '#title' => t('Sticky at top of lists'),
webmaster@1:     '#default_value' => $node->sticky,
webmaster@1:   );
webmaster@1: 
webmaster@1:   // These values are used when the user has no administrator access.
webmaster@1:   foreach (array('uid', 'created') as $key) {
webmaster@1:     $form[$key] = array(
webmaster@1:       '#type' => 'value',
webmaster@1:       '#value' => $node->$key,
webmaster@1:     );
webmaster@1:   }
webmaster@1: 
webmaster@1:   // Add the buttons.
webmaster@1:   $form['buttons'] = array();
webmaster@1:   $form['buttons']['submit'] = array(
webmaster@1:     '#type' => 'submit',
webmaster@11:     '#access' => !variable_get('node_preview', 0) || (!form_get_errors() && isset($form_state['node_preview'])),
webmaster@1:     '#value' => t('Save'),
webmaster@1:     '#weight' => 5,
webmaster@1:     '#submit' => array('node_form_submit'),
webmaster@1:   );
webmaster@1:   $form['buttons']['preview'] = array(
webmaster@1:     '#type' => 'submit',
webmaster@1:     '#value' => t('Preview'),
webmaster@1:     '#weight' => 10,
webmaster@1:     '#submit' => array('node_form_build_preview'),
webmaster@1:   );
webmaster@1:   if (!empty($node->nid) && node_access('delete', $node)) {
webmaster@1:     $form['buttons']['delete'] = array(
webmaster@1:       '#type' => 'submit',
webmaster@1:       '#value' => t('Delete'),
webmaster@1:       '#weight' => 15,
webmaster@1:       '#submit' => array('node_form_delete_submit'),
webmaster@1:     );
webmaster@1:   }
webmaster@1:   $form['#validate'][] = 'node_form_validate';
webmaster@1:   $form['#theme'] = array($node->type .'_node_form', 'node_form');
webmaster@1:   return $form;
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Return a node body field, with format and teaser.
webmaster@1:  */
webmaster@1: function node_body_field(&$node, $label, $word_count) {
webmaster@1: 
webmaster@1:   // Check if we need to restore the teaser at the beginning of the body.
webmaster@1:   $include = !isset($node->teaser) || ($node->teaser == substr($node->body, 0, strlen($node->teaser)));
webmaster@1: 
webmaster@1:   $form = array(
webmaster@1:     '#after_build' => array('node_teaser_js', 'node_teaser_include_verify'));
webmaster@1: 
webmaster@1:   $form['#prefix'] = '<div class="body-field-wrapper">';
webmaster@1:   $form['#suffix'] = '</div>';
webmaster@1: 
webmaster@1:   $form['teaser_js'] = array(
webmaster@1:     '#type' => 'textarea',
webmaster@1:     '#rows' => 10,
webmaster@1:     '#teaser' => 'edit-body',
webmaster@1:     '#teaser_checkbox' => 'edit-teaser-include',
webmaster@1:     '#disabled' => TRUE,
webmaster@1:   );
webmaster@1: 
webmaster@1:   $form['teaser_include'] = array(
webmaster@1:     '#type' => 'checkbox',
webmaster@1:     '#title' => t('Show summary in full view'),
webmaster@1:     '#default_value' => $include,
webmaster@1:     '#prefix' => '<div class="teaser-checkbox">',
webmaster@1:     '#suffix' => '</div>',
webmaster@1:   );
webmaster@1: 
webmaster@1:   $form['body'] = array(
webmaster@1:     '#type' => 'textarea',
webmaster@1:     '#title' => check_plain($label),
webmaster@1:     '#default_value' => $include ? $node->body : ($node->teaser . $node->body),
webmaster@1:     '#rows' => 20,
webmaster@1:     '#required' => ($word_count > 0),
webmaster@1:   );
webmaster@1: 
webmaster@1:   $form['format'] = filter_form($node->format);
webmaster@1: 
webmaster@1:   return $form;
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Button sumit function: handle the 'Delete' button on the node form.
webmaster@1:  */
webmaster@1: function node_form_delete_submit($form, &$form_state) {
webmaster@1:   $destination = '';
webmaster@1:   if (isset($_REQUEST['destination'])) {
webmaster@1:     $destination = drupal_get_destination();
webmaster@1:     unset($_REQUEST['destination']);
webmaster@1:   }
webmaster@1:   $node = $form['#node'];
webmaster@1:   $form_state['redirect'] = array('node/'. $node->nid .'/delete', $destination);
webmaster@1: }
webmaster@1: 
webmaster@1: 
webmaster@1: function node_form_build_preview($form, &$form_state) {
webmaster@1:   $node = node_form_submit_build_node($form, $form_state);
webmaster@1:   $form_state['node_preview'] = node_preview($node);
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Present a node submission form.
webmaster@1:  *
webmaster@1:  * @ingroup themeable
webmaster@1:  */
webmaster@1: function theme_node_form($form) {
webmaster@1:   $output = "\n<div class=\"node-form\">\n";
webmaster@1: 
webmaster@1:   // Admin form fields and submit buttons must be rendered first, because
webmaster@1:   // they need to go to the bottom of the form, and so should not be part of
webmaster@1:   // the catch-all call to drupal_render().
webmaster@1:   $admin = '';
webmaster@1:   if (isset($form['author'])) {
webmaster@1:     $admin .= "    <div class=\"authored\">\n";
webmaster@1:     $admin .= drupal_render($form['author']);
webmaster@1:     $admin .= "    </div>\n";
webmaster@1:   }
webmaster@1:   if (isset($form['options'])) {
webmaster@1:     $admin .= "    <div class=\"options\">\n";
webmaster@1:     $admin .= drupal_render($form['options']);
webmaster@1:     $admin .= "    </div>\n";
webmaster@1:   }
webmaster@1:   $buttons = drupal_render($form['buttons']);
webmaster@1: 
webmaster@1:   // Everything else gets rendered here, and is displayed before the admin form
webmaster@1:   // field and the submit buttons.
webmaster@1:   $output .= "  <div class=\"standard\">\n";
webmaster@1:   $output .= drupal_render($form);
webmaster@1:   $output .= "  </div>\n";
webmaster@1: 
webmaster@1:   if (!empty($admin)) {
webmaster@1:     $output .= "  <div class=\"admin\">\n";
webmaster@1:     $output .= $admin;
webmaster@1:     $output .= "  </div>\n";
webmaster@1:   }
webmaster@1:   $output .= $buttons;
webmaster@1:   $output .= "</div>\n";
webmaster@1: 
webmaster@1:   return $output;
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Generate a node preview.
webmaster@1:  */
webmaster@1: function node_preview($node) {
webmaster@1:   if (node_access('create', $node) || node_access('update', $node)) {
webmaster@1:     // Load the user's name when needed.
webmaster@1:     if (isset($node->name)) {
webmaster@1:       // The use of isset() is mandatory in the context of user IDs, because
webmaster@1:       // user ID 0 denotes the anonymous user.
webmaster@1:       if ($user = user_load(array('name' => $node->name))) {
webmaster@1:         $node->uid = $user->uid;
webmaster@1:         $node->picture = $user->picture;
webmaster@1:       }
webmaster@1:       else {
webmaster@1:         $node->uid = 0; // anonymous user
webmaster@1:       }
webmaster@1:     }
webmaster@1:     else if ($node->uid) {
webmaster@1:       $user = user_load(array('uid' => $node->uid));
webmaster@1:       $node->name = $user->name;
webmaster@1:       $node->picture = $user->picture;
webmaster@1:     }
webmaster@1: 
webmaster@1:     $node->changed = time();
webmaster@1: 
webmaster@1:     // Extract a teaser, if it hasn't been set (e.g. by a module-provided
webmaster@1:     // 'teaser' form item).
webmaster@1:     if (!isset($node->teaser)) {
webmaster@1:       $node->teaser = empty($node->body) ? '' : node_teaser($node->body, $node->format);
webmaster@1:       // Chop off the teaser from the body if needed.
webmaster@1:       if (!$node->teaser_include && $node->teaser == substr($node->body, 0, strlen($node->teaser))) {
webmaster@1:         $node->body = substr($node->body, strlen($node->teaser));
webmaster@1:       }
webmaster@1:     }
webmaster@1: 
webmaster@1:     // Display a preview of the node.
webmaster@1:     // Previewing alters $node so it needs to be cloned.
webmaster@1:     if (!form_get_errors()) {
webmaster@1:       $cloned_node = drupal_clone($node);
webmaster@1:       $cloned_node->build_mode = NODE_BUILD_PREVIEW;
webmaster@1:       $output = theme('node_preview', $cloned_node);
webmaster@1:     }
webmaster@1:     drupal_set_title(t('Preview'));
webmaster@1: 
webmaster@1:     return $output;
webmaster@1:   }
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Display a node preview for display during node creation and editing.
webmaster@1:  *
webmaster@1:  * @param $node
webmaster@1:  *   The node object which is being previewed.
webmaster@1:  *
webmaster@1:  * @ingroup themeable
webmaster@1:  */
webmaster@1: function theme_node_preview($node) {
webmaster@1:   $output = '<div class="preview">';
webmaster@1: 
webmaster@1:   $preview_trimmed_version = FALSE;
webmaster@1:   // Do we need to preview trimmed version of post as well as full version?
webmaster@1:   if (isset($node->teaser) && isset($node->body)) {
webmaster@1:     $teaser = trim($node->teaser);
webmaster@1:     $body = trim(str_replace('<!--break-->', '', $node->body));
webmaster@1: 
webmaster@1:     // Preview trimmed version if teaser and body will appear different;
webmaster@1:     // also (edge case) if both teaser and body have been specified by the user
webmaster@1:     // and are actually the same.
webmaster@1:     if ($teaser != $body || ($body && strpos($node->body, '<!--break-->') === 0)) {
webmaster@1:       $preview_trimmed_version = TRUE;
webmaster@1:     }
webmaster@1:   }
webmaster@1: 
webmaster@1:   if ($preview_trimmed_version) {
webmaster@1:     drupal_set_message(t('The trimmed version of your post shows what your post looks like when promoted to the main page or when exported for syndication.<span class="no-js"> You can insert the delimiter "&lt;!--break--&gt;" (without the quotes) to fine-tune where your post gets split.</span>'));
webmaster@1:     $output .= '<h3>'. t('Preview trimmed version') .'</h3>';
webmaster@1:     $output .= node_view(drupal_clone($node), 1, FALSE, 0);
webmaster@1:     $output .= '<h3>'. t('Preview full version') .'</h3>';
webmaster@1:     $output .= node_view($node, 0, FALSE, 0);
webmaster@1:   }
webmaster@1:   else {
webmaster@1:     $output .= node_view($node, 0, FALSE, 0);
webmaster@1:   }
webmaster@1:   $output .= "</div>\n";
webmaster@1: 
webmaster@1:   return $output;
webmaster@1: }
webmaster@1: 
webmaster@1: function node_form_submit($form, &$form_state) {
webmaster@1:   global $user;
webmaster@1: 
webmaster@1:   $node = node_form_submit_build_node($form, $form_state);
webmaster@1:   $insert = empty($node->nid);
webmaster@1:   node_save($node);
webmaster@1:   $node_link = l(t('view'), 'node/'. $node->nid);
webmaster@1:   $watchdog_args = array('@type' => $node->type, '%title' => $node->title);
webmaster@1:   $t_args = array('@type' => node_get_types('name', $node), '%title' => $node->title);
webmaster@1: 
webmaster@1:   if ($insert) {
webmaster@1:     watchdog('content', '@type: added %title.', $watchdog_args, WATCHDOG_NOTICE, $node_link);
webmaster@1:     drupal_set_message(t('@type %title has been created.', $t_args));
webmaster@1:   }
webmaster@1:   else {
webmaster@1:     watchdog('content', '@type: updated %title.', $watchdog_args, WATCHDOG_NOTICE, $node_link);
webmaster@1:     drupal_set_message(t('@type %title has been updated.', $t_args));
webmaster@1:   }
webmaster@1:   if ($node->nid) {
webmaster@1:     unset($form_state['rebuild']);
webmaster@1:     $form_state['nid'] = $node->nid;
webmaster@1:     $form_state['redirect'] = 'node/'. $node->nid;
webmaster@1:   }
webmaster@1:   else {
webmaster@1:     // In the unlikely case something went wrong on save, the node will be
webmaster@1:     // rebuilt and node form redisplayed the same way as in preview.
webmaster@1:     drupal_set_message(t('The post could not be saved.'), 'error');
webmaster@1:   }
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Build a node by processing submitted form values and prepare for a form rebuild.
webmaster@1:  */
webmaster@1: function node_form_submit_build_node($form, &$form_state) {
webmaster@1:   // Unset any button-level handlers, execute all the form-level submit
webmaster@1:   // functions to process the form values into an updated node.
webmaster@1:   unset($form_state['submit_handlers']);
webmaster@1:   form_execute_handlers('submit', $form, $form_state);
webmaster@1:   $node = node_submit($form_state['values']);
webmaster@1:   $form_state['node'] = (array)$node;
webmaster@1:   $form_state['rebuild'] = TRUE;
webmaster@1:   return $node;
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Menu callback -- ask for confirmation of node deletion
webmaster@1:  */
webmaster@1: function node_delete_confirm(&$form_state, $node) {
webmaster@1:   $form['nid'] = array(
webmaster@1:     '#type' => 'value',
webmaster@1:     '#value' => $node->nid,
webmaster@1:   );
webmaster@1: 
webmaster@1:   return confirm_form($form,
webmaster@1:     t('Are you sure you want to delete %title?', array('%title' => $node->title)),
webmaster@1:     isset($_GET['destination']) ? $_GET['destination'] : 'node/'. $node->nid,
webmaster@1:     t('This action cannot be undone.'),
webmaster@1:     t('Delete'),
webmaster@1:     t('Cancel')
webmaster@1:   );
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Execute node deletion
webmaster@1:  */
webmaster@1: function node_delete_confirm_submit($form, &$form_state) {
webmaster@1:   if ($form_state['values']['confirm']) {
webmaster@1:     node_delete($form_state['values']['nid']);
webmaster@1:   }
webmaster@1: 
webmaster@1:   $form_state['redirect'] = '<front>';
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Generate an overview table of older revisions of a node.
webmaster@1:  */
webmaster@1: function node_revision_overview($node) {
webmaster@1:   drupal_set_title(t('Revisions for %title', array('%title' => $node->title)));
webmaster@1: 
webmaster@1:   $header = array(t('Revision'), array('data' => t('Operations'), 'colspan' => 2));
webmaster@1: 
webmaster@1:   $revisions = node_revision_list($node);
webmaster@1: 
webmaster@1:   $rows = array();
webmaster@1:   $revert_permission = FALSE;
webmaster@1:   if ((user_access('revert revisions') || user_access('administer nodes')) && node_access('update', $node)) {
webmaster@1:     $revert_permission = TRUE;
webmaster@1:   }
webmaster@1:   $delete_permission = FALSE;
webmaster@1:   if ((user_access('delete revisions') || user_access('administer nodes')) && node_access('delete', $node)) {
webmaster@1:     $delete_permission = TRUE;
webmaster@1:   }
webmaster@1:   foreach ($revisions as $revision) {
webmaster@1:     $row = array();
webmaster@1:     $operations = array();
webmaster@1: 
webmaster@1:     if ($revision->current_vid > 0) {
webmaster@1:       $row[] = array('data' => t('!date by !username', array('!date' => l(format_date($revision->timestamp, 'small'), "node/$node->nid"), '!username' => theme('username', $revision)))
webmaster@1:                                . (($revision->log != '') ? '<p class="revision-log">'. filter_xss($revision->log) .'</p>' : ''),
webmaster@1:                      'class' => 'revision-current');
webmaster@1:       $operations[] = array('data' => theme('placeholder', t('current revision')), 'class' => 'revision-current', 'colspan' => 2);
webmaster@1:     }
webmaster@1:     else {
webmaster@1:       $row[] = t('!date by !username', array('!date' => l(format_date($revision->timestamp, 'small'), "node/$node->nid/revisions/$revision->vid/view"), '!username' => theme('username', $revision)))
webmaster@1:                . (($revision->log != '') ? '<p class="revision-log">'. filter_xss($revision->log) .'</p>' : '');
webmaster@1:       if ($revert_permission) {
webmaster@1:         $operations[] = l(t('revert'), "node/$node->nid/revisions/$revision->vid/revert");
webmaster@1:       }
webmaster@1:       if ($delete_permission) {
webmaster@1:         $operations[] = l(t('delete'), "node/$node->nid/revisions/$revision->vid/delete");
webmaster@1:       }
webmaster@1:     }
webmaster@1:     $rows[] = array_merge($row, $operations);
webmaster@1:   }
webmaster@1: 
webmaster@1:   return theme('table', $header, $rows);
webmaster@1: }
webmaster@1: 
webmaster@1: /**
webmaster@1:  * Ask for confirmation of the reversion to prevent against CSRF attacks.
webmaster@1:  */
webmaster@1: function node_revision_revert_confirm($form_state, $node_revision) {
webmaster@1:   $form['#node_revision'] = $node_revision;
webmaster@1:   return confirm_form($form, t('Are you sure you want to revert to the revision from %revision-date?', array('%revision-date' => format_date($node_revision->revision_timestamp))), 'node/'. $node_revision->nid .'/revisions', '', t('Revert'), t('Cancel'));
webmaster@1: }
webmaster@1: 
webmaster@1: function node_revision_revert_confirm_submit($form, &$form_state) {
webmaster@1:   $node_revision = $form['#node_revision'];
webmaster@1:   $node_revision->revision = 1;
webmaster@1:   $node_revision->log = t('Copy of the revision from %date.', array('%date' => format_date($node_revision->revision_timestamp)));
webmaster@1:   if (module_exists('taxonomy')) {
webmaster@1:     $node_revision->taxonomy = array_keys($node_revision->taxonomy);
webmaster@1:   }
webmaster@1: 
webmaster@1:   node_save($node_revision);
webmaster@1: 
webmaster@1:   watchdog('content', '@type: reverted %title revision %revision.', array('@type' => $node_revision->type, '%title' => $node_revision->title, '%revision' => $node_revision->vid));
webmaster@1:   drupal_set_message(t('@type %title has been reverted back to the revision from %revision-date.', array('@type' => node_get_types('name', $node_revision), '%title' => $node_revision->title, '%revision-date' => format_date($node_revision->revision_timestamp))));
webmaster@1:   $form_state['redirect'] = 'node/'. $node_revision->nid .'/revisions';
webmaster@1: }
webmaster@1: 
webmaster@1: function node_revision_delete_confirm($form_state, $node_revision) {
webmaster@1:   $form['#node_revision'] = $node_revision;
webmaster@1:   return confirm_form($form, t('Are you sure you want to delete the revision from %revision-date?', array('%revision-date' => format_date($node_revision->revision_timestamp))), 'node/'. $node_revision->nid .'/revisions', t('This action cannot be undone.'), t('Delete'), t('Cancel'));
webmaster@1: }
webmaster@1: 
webmaster@1: function node_revision_delete_confirm_submit($form, &$form_state) {
webmaster@1:   $node_revision = $form['#node_revision'];
webmaster@1:   db_query("DELETE FROM {node_revisions} WHERE nid = %d AND vid = %d", $node_revision->nid, $node_revision->vid);
webmaster@1:   node_invoke_nodeapi($node_revision, 'delete revision');
webmaster@1:   watchdog('content', '@type: deleted %title revision %revision.', array('@type' => $node_revision->type, '%title' => $node_revision->title, '%revision' => $node_revision->vid));
webmaster@1:   drupal_set_message(t('Revision from %revision-date of @type %title has been deleted.', array('%revision-date' => format_date($node_revision->revision_timestamp), '@type' => node_get_types('name', $node_revision), '%title' => $node_revision->title)));
webmaster@1:   $form_state['redirect'] = 'node/'. $node_revision->nid;
webmaster@1:   if (db_result(db_query('SELECT COUNT(vid) FROM {node_revisions} WHERE nid = %d', $node_revision->nid)) > 1) {
webmaster@1:     $form_state['redirect'] .= '/revisions';
webmaster@1:   }
webmaster@1: }