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("Entity"),

  'description' => t('Entity object.'),

  'context' => 'ctools_context_create_entity',

  'edit form' => 'ctools_context_entity_settings_form',

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

  'convert list' => 'ctools_context_entity_convert_list',

  'convert' => 'ctools_context_entity_convert',

  'placeholder form' => array(

    '#type' => 'textfield',

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

  ),

  // Tell ctools_context_get_context_from_context() how to interpret its $argument.

  'placeholder name' => 'entity_id',

  'get child' => 'ctools_context_entity_get_child',

  'get children' => 'ctools_context_entity_get_children',

);

function ctools_context_entity_get_child($plugin, $parent, $child) {

  $plugins = ctools_context_entity_get_children($plugin, $parent);

  return $plugins[$parent . ':' . $child];

}

function ctools_context_entity_get_children($plugin, $parent) {

  $entities = entity_get_info();

  $plugins = array();

  foreach ($entities as $entity_type => $entity) {

    $child_plugin = $plugin;

    $child_plugin['title'] = $entity['label'];

    $child_plugin['keyword'] = $entity_type;

    $child_plugin['context name'] = $entity_type;

    $child_plugin['name'] = $parent . ':' . $entity_type;

    $child_plugin['description'] = t('Creates @entity context from an entity ID.', array('@entity' => $entity_type));

    $child_plugin_id = $parent . ':' . $entity_type;

    drupal_alter('ctools_entity_context', $child_plugin, $entity, $child_plugin_id);

    $plugins[$child_plugin_id] = $child_plugin;

  }

  drupal_alter('ctools_entity_contexts', $plugins);

  return $plugins;

}

/**

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

 * are not always created from the UI.

 */

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

  $entity_type = $plugin['keyword'];

  $entity = entity_get_info($entity_type);

  $context = new ctools_context(array('entity:' . $entity_type, 'entity', $entity_type));

  $context->plugin = $plugin['name'];

  $context->keyword = $entity_type;

  if ($empty) {

    return $context;

  }

  // Attempt to retain compatibility with broken id:

  if (is_array($data) && !isset($data['entity_id']) && isset($data['id'])) {

    $id = $data['id'];

  }

  elseif (is_array($data) && isset($data['entity_id'])) {

    $id = $data['entity_id'];

  }

  elseif (is_object($data)) {

    $ids = entity_extract_ids($entity_type, $data);

    $id = $ids[0];

  }

  elseif (is_numeric($data)) {

    $id = $data;

    $data = entity_load($entity_type, array($id));

    $data = !empty($data[$id]) ? $data[$id] : FALSE;

  }

  if (is_array($data)) {

    $data = entity_load($entity_type, array($id));

    $data = !empty($data[$id]) ? $data[$id] : FALSE;

  }

  if (!empty($data)) {

    $context->data = $data;

    if (!empty($entity['entity keys']['label'])) {

      $context->title = $data->{$entity['entity keys']['label']};

    }

    $context->argument = $id;

    if ($entity['entity keys']['bundle']) {

      $context->restrictions['type'] = array($data->{$entity['entity keys']['bundle']});

    }

    return $context;

  }

}

function ctools_context_entity_settings_form($form, &$form_state) {

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

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

  $form['entity'] = array(

    '#title' => t('Enter the title or ID of a @entity entity', array('@entity' => $plugin['keyword'])),

    '#type' => 'textfield',

    '#maxlength' => 512,

    '#autocomplete_path' => 'ctools/autocomplete/' . $plugin['keyword'],

    '#weight' => -10,

  );

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

    $info = entity_load($plugin['keyword'], array($conf['entity_id']));

    $info = $info[$conf['entity_id']];

    if ($info) {

      $entity = entity_get_info($plugin['keyword']);

      $uri = entity_uri($plugin['keyword'], $info);

      if (is_array($uri) && $entity['entity keys']['label']) {

        $link = l(t("'%title' [%type id %id]", array('%title' => $info->{$entity['entity keys']['label']}, '%type' => $plugin['keyword'], '%id' => $conf['entity_id'])), $uri['path'], array('attributes' => array('target' => '_blank', 'title' => t('Open in new window')), 'html' => TRUE));

      }

      elseif (is_array($uri)) {

        $link = l(t("[%type id %id]", array('%type' => $plugin['keyword'], '%id' => $conf['entity_id'])), $uri['path'], array('attributes' => array('target' => '_blank', 'title' => t('Open in new window')), 'html' => TRUE));

      }

      elseif ($entity['entity keys']['label']) {

        $link = l(t("'%title' [%type id %id]", array('%title' => $info->{$entity['entity keys']['label']}, '%type' => $plugin['keyword'], '%id' => $conf['entity_id'])), file_create_url($uri), array('attributes' => array('target' => '_blank', 'title' => t('Open in new window')), 'html' => TRUE));

      }

      else {

        $link = t("[%type id %id]", array('%type' => $plugin['keyword'], '%id' => $conf['entity_id']));

      }

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

    }

  }

  $form['entity_id'] = array(

    '#type' => 'value',

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

  );

  $form['entity_type'] = array(

    '#type' => 'value',

    '#value' => $plugin['keyword'],

  );

  $form['set_identifier'] = array(

    '#type' => 'checkbox',

    '#default_value' => FALSE,

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

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

  );

  return $form;

}

/**

 * Validate a node.

 */

function ctools_context_entity_settings_form_validate($form, &$form_state) {

  // Validate the autocomplete.

  if (empty($form_state['values']['entity_id']) && empty($form_state['values']['entity'])) {

    form_error($form['entity'], t('You must select an entity.'));

    return;

  }

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

    return;

  }

  $id           = $form_state['values']['entity'];

  $preg_matches = array();

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

  if (!$match) {

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

  }

  if ($match) {

    $id = $preg_matches[1];

  }

  if (is_numeric($id)) {

    $entity = entity_load($form_state['values']['entity_type'], array($id));

    $entity = $entity[$id];

  }

  else {

    $entity_info = entity_get_info($form_state['values']['entity_type']);

    $field = $entity_info['entity keys']['label'];

    $entity = entity_load($form_state['values']['entity_type'], FALSE, array($field => $id));

  }

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

  // || (empty($node->status) && !(user_access('administer nodes'))) need a new sanity check at some point.

  if (!$entity) {

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

  }

  else {

    $entity_id = entity_extract_ids($form_state['values']['entity_type'], $entity);

    form_set_value($form['entity_id'], $entity_id[0], $form_state);

  }

}

function ctools_context_entity_settings_form_submit($form, &$form_state) {

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

    $entity_info = entity_get_info($form_state['values']['entity_type']);

    $entity = entity_load($form_state['values']['entity_type'], array($form_state['values']['entity_id']));

    $entity = $entity[$form_state['values']['entity_id']];

    $form_state['values']['identifier'] = $entity->{$entity_info['entity keys']['label']};

  }

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

  // validator.

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

}

/**

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

 */

function ctools_context_entity_convert_list($plugin) {

  $list = array();

  $entity = entity_get_info($plugin['context name']);

  if (isset($entity['token type'])) {

    $token = $entity['token type'];

  }

  else {

    $token = $plugin['context name'];

  }

  // Hack: we need either token.module or a core fix for this to work right,

  // until then, we just muscle it.

  if ($token == 'taxonomy_term') {

    $token = 'term';

  }

  $tokens = token_info();

  if (isset($tokens['tokens'][$token])) {

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

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

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

      }

    }

  }

  return $list;

}

/**

 * Convert a context into a string.

 */

function ctools_context_entity_convert($context, $type, $options = array()) {

  $entity_type = $context->type[2];

  $entity = entity_get_info($entity_type);

  if (isset($entity['token type'])) {

    $token = $entity['token type'];

  }

  else {

    $token = $entity_type;

  }

  // Hack: we need either token.module or a core fix for this to work right,

  // until then, we just muscle it.

  if ($token == 'taxonomy_term') {

    $token = 'term';

  }

  $tokens = token_info();

  $values = token_generate($token, array($type => $type), array($token => $context->data), $options);

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

    return $values[$type];

  }

}