<?php

// $Id: node.pages.inc,v 1.28.2.4 2009/04/27 11:35:01 goba Exp $

/**

 * @file

 * Page callbacks for adding, editing, deleting, and revisions management for content.

 */

/**

 * Menu callback; presents the node editing form, or redirects to delete confirmation.

 */

function node_page_edit($node) {

  drupal_set_title(check_plain($node->title));

  return drupal_get_form($node->type .'_node_form', $node);

}

function node_add_page() {

  $item = menu_get_item();

  $content = system_admin_menu_block($item);

  return theme('node_add_list', $content);

}

/**

 * Display the list of available node types for node creation.

 *

 * @ingroup themeable

 */

function theme_node_add_list($content) {

  $output = '';

  if ($content) {

    $output = '<dl class="node-type-list">';

    foreach ($content as $item) {

      $output .= '<dt>'. l($item['title'], $item['href'], $item['localized_options']) .'</dt>';      

      $output .= '<dd>'. filter_xss_admin($item['description']) .'</dd>';

    }

    $output .= '</dl>';

  }

  return $output;

}

/**

 * Present a node submission form or a set of links to such forms.

 */

function node_add($type) {

  global $user;

  $types = node_get_types();

  $type = isset($type) ? str_replace('-', '_', $type) : NULL;

  // If a node type has been specified, validate its existence.

  if (isset($types[$type]) && node_access('create', $type)) {

    // Initialize settings:

    $node = array('uid' => $user->uid, 'name' => (isset($user->name) ? $user->name : ''), 'type' => $type, 'language' => '');

    drupal_set_title(t('Create @name', array('@name' => $types[$type]->name)));

    $output = drupal_get_form($type .'_node_form', $node);

  }

  return $output;

}

function node_form_validate($form, &$form_state) {

  node_validate($form_state['values'], $form);

}

function node_object_prepare(&$node) {

  // Set up default values, if required.

  $node_options = variable_get('node_options_'. $node->type, array('status', 'promote'));

  // If this is a new node, fill in the default values.

  if (!isset($node->nid)) {

    foreach (array('status', 'promote', 'sticky') as $key) {

      $node->$key = in_array($key, $node_options);

    }

    global $user;

    $node->uid = $user->uid;

    $node->created = time();

  }

  else {

    $node->date = format_date($node->created, 'custom', 'Y-m-d H:i:s O');

    // Remove the log message from the original node object.

    $node->log = NULL;

  }

  // Always use the default revision setting.

  $node->revision = in_array('revision', $node_options);

  node_invoke($node, 'prepare');

  node_invoke_nodeapi($node, 'prepare');

}

/**

 * Generate the node add/edit form array.

 */

function node_form(&$form_state, $node) {

  global $user;

  if (isset($form_state['node'])) {

    $node = $form_state['node'] + (array)$node;

  }

  if (isset($form_state['node_preview'])) {

    $form['#prefix'] = $form_state['node_preview'];

  }

  $node = (object)$node;

  foreach (array('body', 'title', 'format') as $key) {

    if (!isset($node->$key)) {

      $node->$key = NULL;

    }

  }

  if (!isset($form_state['node_preview'])) {

    node_object_prepare($node);

  }

  else {

    $node->build_mode = NODE_BUILD_PREVIEW;

  }

  // Set the id of the top-level form tag

  $form['#id'] = 'node-form';

  // Basic node information.

  // These elements are just values so they are not even sent to the client.

  foreach (array('nid', 'vid', 'uid', 'created', 'type', 'language') as $key) {

    $form[$key] = array(

      '#type' => 'value',

      '#value' => isset($node->$key) ? $node->$key : NULL,

    );

  }

  // Changed must be sent to the client, for later overwrite error checking.

  $form['changed'] = array(

    '#type' => 'hidden',

    '#default_value' => isset($node->changed) ? $node->changed : NULL,

  );

  // Get the node-specific bits.

  if ($extra = node_invoke($node, 'form', $form_state)) {

    $form = array_merge_recursive($form, $extra);

  }

  if (!isset($form['title']['#weight'])) {

    $form['title']['#weight'] = -5;

  }

  $form['#node'] = $node;

  // Add a log field if the "Create new revision" option is checked, or if the

  // current user has the ability to check that option.

  if (!empty($node->revision) || user_access('administer nodes')) {

    $form['revision_information'] = array(

      '#type' => 'fieldset',

      '#title' => t('Revision information'),

      '#collapsible' => TRUE,

      // Collapsed by default when "Create new revision" is unchecked

      '#collapsed' => !$node->revision,

      '#weight' => 20,

    );

    $form['revision_information']['revision'] = array(

      '#access' => user_access('administer nodes'),

      '#type' => 'checkbox',

      '#title' => t('Create new revision'),

      '#default_value' => $node->revision,

    );

    $form['revision_information']['log'] = array(

      '#type' => 'textarea',

      '#title' => t('Log message'),

      '#default_value' => (isset($node->log) ? $node->log : ''),

      '#rows' => 2,

      '#description' => t('An explanation of the additions or updates being made to help other authors understand your motivations.'),

    );

  }

  // Node author information for administrators

  $form['author'] = array(

    '#type' => 'fieldset',

    '#access' => user_access('administer nodes'),

    '#title' => t('Authoring information'),

    '#collapsible' => TRUE,

    '#collapsed' => TRUE,

    '#weight' => 20,

  );

  $form['author']['name'] = array(

    '#type' => 'textfield',

    '#title' => t('Authored by'),

    '#maxlength' => 60,

    '#autocomplete_path' => 'user/autocomplete',

    '#default_value' => $node->name ? $node->name : '',

    '#weight' => -1,

    '#description' => t('Leave blank for %anonymous.', array('%anonymous' => variable_get('anonymous', t('Anonymous')))),

  );

  $form['author']['date'] = array(

    '#type' => 'textfield',

    '#title' => t('Authored on'),

    '#maxlength' => 25,

    '#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'))),

  );

  if (isset($node->date)) {

    $form['author']['date']['#default_value'] = $node->date;

  }

  // Node options for administrators

  $form['options'] = array(

    '#type' => 'fieldset',

    '#access' => user_access('administer nodes'),

    '#title' => t('Publishing options'),

    '#collapsible' => TRUE,

    '#collapsed' => TRUE,

    '#weight' => 25,

  );

  $form['options']['status'] = array(

    '#type' => 'checkbox',

    '#title' => t('Published'),

    '#default_value' => $node->status,

  );

  $form['options']['promote'] = array(

    '#type' => 'checkbox',

    '#title' => t('Promoted to front page'),

    '#default_value' => $node->promote,

  );

  $form['options']['sticky'] = array(

    '#type' => 'checkbox',

    '#title' => t('Sticky at top of lists'),

    '#default_value' => $node->sticky,

  );

  // These values are used when the user has no administrator access.

  foreach (array('uid', 'created') as $key) {

    $form[$key] = array(

      '#type' => 'value',

      '#value' => $node->$key,

    );

  }

  // Add the buttons.

  $form['buttons'] = array();

  $form['buttons']['submit'] = array(

    '#type' => 'submit',

    '#access' => !variable_get('node_preview', 0) || (!form_get_errors() && isset($form_state['node_preview'])),

    '#value' => t('Save'),

    '#weight' => 5,

    '#submit' => array('node_form_submit'),

  );

  $form['buttons']['preview'] = array(

    '#type' => 'submit',

    '#value' => t('Preview'),

    '#weight' => 10,

    '#submit' => array('node_form_build_preview'),

  );

  if (!empty($node->nid) && node_access('delete', $node)) {

    $form['buttons']['delete'] = array(

      '#type' => 'submit',

      '#value' => t('Delete'),

      '#weight' => 15,

      '#submit' => array('node_form_delete_submit'),

    );

  }

  $form['#validate'][] = 'node_form_validate';

  $form['#theme'] = array($node->type .'_node_form', 'node_form');

  return $form;

}

/**

 * Return a node body field, with format and teaser.

 */

function node_body_field(&$node, $label, $word_count) {

  // Check if we need to restore the teaser at the beginning of the body.

  $include = !isset($node->teaser) || ($node->teaser == substr($node->body, 0, strlen($node->teaser)));

  $form = array(

    '#after_build' => array('node_teaser_js', 'node_teaser_include_verify'));

  $form['#prefix'] = '<div class="body-field-wrapper">';

  $form['#suffix'] = '</div>';

  $form['teaser_js'] = array(

    '#type' => 'textarea',

    '#rows' => 10,

    '#teaser' => 'edit-body',

    '#teaser_checkbox' => 'edit-teaser-include',

    '#disabled' => TRUE,

  );

  $form['teaser_include'] = array(

    '#type' => 'checkbox',

    '#title' => t('Show summary in full view'),

    '#default_value' => $include,

    '#prefix' => '<div class="teaser-checkbox">',

    '#suffix' => '</div>',

  );

  $form['body'] = array(

    '#type' => 'textarea',

    '#title' => check_plain($label),

    '#default_value' => $include ? $node->body : ($node->teaser . $node->body),

    '#rows' => 20,

    '#required' => ($word_count > 0),

  );

  $form['format'] = filter_form($node->format);

  return $form;

}

/**

 * Button sumit function: handle the 'Delete' button on the node form.

 */

function node_form_delete_submit($form, &$form_state) {

  $destination = '';

  if (isset($_REQUEST['destination'])) {

    $destination = drupal_get_destination();

    unset($_REQUEST['destination']);

  }

  $node = $form['#node'];

  $form_state['redirect'] = array('node/'. $node->nid .'/delete', $destination);

}

function node_form_build_preview($form, &$form_state) {

  $node = node_form_submit_build_node($form, $form_state);

  $form_state['node_preview'] = node_preview($node);

}

/**

 * Present a node submission form.

 *

 * @ingroup themeable

 */

function theme_node_form($form) {

  $output = "\n<div class=\"node-form\">\n";

  // Admin form fields and submit buttons must be rendered first, because

  // they need to go to the bottom of the form, and so should not be part of

  // the catch-all call to drupal_render().

  $admin = '';

  if (isset($form['author'])) {

    $admin .= "    <div class=\"authored\">\n";

    $admin .= drupal_render($form['author']);

    $admin .= "    </div>\n";

  }

  if (isset($form['options'])) {

    $admin .= "    <div class=\"options\">\n";

    $admin .= drupal_render($form['options']);

    $admin .= "    </div>\n";

  }

  $buttons = drupal_render($form['buttons']);

  // Everything else gets rendered here, and is displayed before the admin form

  // field and the submit buttons.

  $output .= "  <div class=\"standard\">\n";

  $output .= drupal_render($form);

  $output .= "  </div>\n";

  if (!empty($admin)) {

    $output .= "  <div class=\"admin\">\n";

    $output .= $admin;

    $output .= "  </div>\n";

  }

  $output .= $buttons;

  $output .= "</div>\n";

  return $output;

}

/**

 * Generate a node preview.

 */

function node_preview($node) {

  if (node_access('create', $node) || node_access('update', $node)) {

    // Load the user's name when needed.

    if (isset($node->name)) {

      // The use of isset() is mandatory in the context of user IDs, because

      // user ID 0 denotes the anonymous user.

      if ($user = user_load(array('name' => $node->name))) {

        $node->uid = $user->uid;

        $node->picture = $user->picture;

      }

      else {

        $node->uid = 0; // anonymous user

      }

    }

    else if ($node->uid) {

      $user = user_load(array('uid' => $node->uid));

      $node->name = $user->name;

      $node->picture = $user->picture;

    }

    $node->changed = time();

    // Extract a teaser, if it hasn't been set (e.g. by a module-provided

    // 'teaser' form item).

    if (!isset($node->teaser)) {

      $node->teaser = empty($node->body) ? '' : node_teaser($node->body, $node->format);

      // Chop off the teaser from the body if needed.

      if (!$node->teaser_include && $node->teaser == substr($node->body, 0, strlen($node->teaser))) {

        $node->body = substr($node->body, strlen($node->teaser));

      }

    }

    // Display a preview of the node.

    // Previewing alters $node so it needs to be cloned.

    if (!form_get_errors()) {

      $cloned_node = drupal_clone($node);

      $cloned_node->build_mode = NODE_BUILD_PREVIEW;

      $output = theme('node_preview', $cloned_node);

    }

    drupal_set_title(t('Preview'));

    return $output;

  }

}

/**

 * Display a node preview for display during node creation and editing.

 *

 * @param $node

 *   The node object which is being previewed.

 *

 * @ingroup themeable

 */

function theme_node_preview($node) {