Club Drupal

<?php

/**

 * @file

 * Plugin to provide a node context. A node context is a node wrapped in a

 * context object that can be utilized by anything that accepts contexts.

 */

/**

 * Plugins are described by creating a $plugin array which will be used

 * by the system that includes this file.

 */

$plugin = array(

  'title' => t("Node"),

  'description' => t('A node object.'),

  'context' => 'ctools_context_create_node',

  'edit form' => 'ctools_context_node_settings_form',

  'defaults' => array('nid' => ''),

  'keyword' => 'node',

  'context name' => 'node',

  'convert list' => 'ctools_context_node_convert_list',

  'convert' => 'ctools_context_node_convert',

  'placeholder form' => array(

    '#type' => 'textfield',

    '#description' => t('Enter the node ID of a node for this context.'),

  ),

  // This context is deprecated and should not be usable in the UI.

  'no ui' => TRUE,

  'no required context ui' => TRUE,

  'superceded by' => 'entity:node',

);

/**

 * It's important to remember that $conf is optional here, because contexts

 * are not always created from the UI.

 */

function ctools_context_create_node($empty, $data = NULL, $conf = FALSE) {

  $context = new ctools_context('node');

  $context->plugin = 'node';

  if ($empty) {

    return $context;

  }

  if ($conf) {

    $nid = is_array($data) && isset($data['nid']) ? $data['nid'] : (is_object($data) ? $data->nid : 0);

    if (module_exists('translation')) {

      if ($translation = module_invoke('translation', 'node_nid', $nid, $GLOBALS['language']->language)) {

        $nid = $translation;

        $reload = TRUE;

      }

    }

    if (is_array($data) || !empty($reload)) {

      $data = node_load($nid);

    }

  }

  if (!empty($data)) {

    $context->data     = $data;

    $context->title    = $data->title;

    $context->argument = $data->nid;

    $context->restrictions['type'] = array($data->type);

    return $context;

  }

}

function ctools_context_node_settings_form($form, &$form_state) {

  $conf = &$form_state['conf'];

  $form['node'] = array(

    '#title' => t('Enter the title or NID of a node'),

    '#type' => 'textfield',

    '#maxlength' => 512,

    '#autocomplete_path' => 'ctools/autocomplete/node',

    '#weight' => -10,

  );

  if (!empty($conf['nid'])) {

    $info = db_query('SELECT * FROM {node} WHERE nid = :nid', array(':nid' => $conf['nid']))->fetchObject();

    if ($info) {

      $link = l(t("'%title' [node id %nid]", array('%title' => $info->title, '%nid' => $info->nid)), "node/$info->nid", array('attributes' => array('target' => '_blank', 'title' => t('Open in new window')), 'html' => TRUE));

      $form['node']['#description'] = t('Currently set to !link', array('!link' => $link));

    }

  }

  $form['nid'] = array(

    '#type' => 'value',

    '#value' => $conf['nid'],

  );

  $form['set_identifier'] = array(

    '#type' => 'checkbox',

    '#default_value' => FALSE,

    '#title' => t('Reset identifier to node title'),

    '#description' => t('If checked, the identifier will be reset to the node title of the selected node.'),

  );

  return $form;

}

/**

 * Validate a node.

 */

function ctools_context_node_settings_form_validate($form, &$form_state) {

  // Validate the autocomplete.

  if (empty($form_state['values']['nid']) && empty($form_state['values']['node'])) {

    form_error($form['node'], t('You must select a node.'));

    return;

  }

  if (empty($form_state['values']['node'])) {

    return;

  }

  $nid          = $form_state['values']['node'];

  $preg_matches = array();

  $match        = preg_match('/\[id: (\d+)\]/', $nid, $preg_matches);

  if (!$match) {

    $match = preg_match('/^id: (\d+)/', $nid, $preg_matches);

  }

  if ($match) {

    $nid = $preg_matches[1];

  }

  if (is_numeric($nid)) {

    $node = db_query('SELECT nid, status FROM {node} WHERE nid = :nid', array(':nid' => $nid))->fetchObject();

  }

  else {

    $node = db_query('SELECT nid, status FROM {node} WHERE LOWER(title) = LOWER(:title)', array(':title' => $nid))->fetchObject();

  }

  // Do not allow unpublished nodes to be selected by unprivileged users.

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

    form_error($form['node'], t('Invalid node selected.'));

  }

  else {

    form_set_value($form['nid'], $node->nid, $form_state);

  }

}

function ctools_context_node_settings_form_submit($form, &$form_state) {

  if ($form_state['values']['set_identifier']) {

    $node = node_load($form_state['values']['nid']);

    $form_state['values']['identifier'] = $node->title;

  }

  // This will either be the value set previously or a value set by the

  // validator.

  $form_state['conf']['nid'] = $form_state['values']['nid'];

}

/**

 * Provide a list of ways that this context can be converted to a string.

 */

function ctools_context_node_convert_list() {

  $tokens = token_info();

  foreach ($tokens['tokens']['node'] as $id => $info) {

    if (!isset($list[$id])) {

      $list[$id] = $info['name'];

    }

  }

  return $list;

}

/**

 * Convert a context into a string.

 */

function ctools_context_node_convert($context, $type) {

  $tokens = token_info();

  if (isset($tokens['tokens']['node'][$type])) {

    $values = token_generate('node', array($type => $type), array('node' => $context->data));

    if (isset($values[$type])) {

      return $values[$type];

    }

  }

}