Club Drupal

<?php

/**

 * @file

 * Handle rendering entity fields as panes.

 */

$plugin = array(

  'title' => t('Entity field'),

  'defaults' => array('label' => '', 'formatter' => ''),

  'content type' => 'ctools_entity_form_field_content_type_content_type',

);

/**

 * Just one subtype.

 *

 * Ordinarily this function is meant to get just one subtype. However, we are

 * using it to deal with the fact that we have changed the subtype names. This

 * lets us translate the name properly.

 */

function ctools_entity_form_field_content_type_content_type($subtype) {

  $types = ctools_entity_form_field_content_type_content_types();

  if (isset($types[$subtype])) {

    return $types[$subtype];

  }

}

/**

 * Return all field content types available.

 */

function ctools_entity_form_field_content_type_content_types() {

  // This will hold all the individual field content types.

  $types = &drupal_static(__FUNCTION__);

  if (isset($types)) {

    return $types;

  }

  $types = array();

  $content_types = array();

  $entities = entity_get_info();

  $field_instances = field_info_instances();

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

    foreach ($entity['bundles'] as $type => $bundle) {

      if (!isset($field_instances[$entity_type][$type])) {

        continue;

      }

      foreach ($field_instances[$entity_type][$type] as $field_name => $field) {

        if (!isset($types[$entity_type . ':' . $field_name])) {

          $types[$entity_type . ':' . $field_name] = array(

            'category' => t('Form'),

            'icon' => 'icon_field.png',

            'title' => t('Field form: @widget_label', array(

              '@widget_label' => t($field['label']),

            )),

            'description' => t('Field on the referenced entity.'),

          );

        }

        $content_types[$entity_type . ':' . $field_name]['types'][$type] = $bundle['label'];

      }

    }

  }

  if (module_exists('field_group')) {

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

      foreach ($entity['bundles'] as $type => $bundle) {

        if ($group_info = field_group_info_groups($entity_type, $type, "form")) {

          foreach ($group_info as $group_name => $group) {

            if (!isset($types[$entity_type . ':' . $group_name])) {

              $types[$entity_type . ':' . $group_name] = array(

                'category' => t('Form'),

                'icon' => 'icon_field.png',

                'title' => t('Group form: @widget_label', array('@widget_label' => $group->label)),

                'description' => t('Field group on the referenced entity.'),

              );

            }

            $content_types[$entity_type . ':' . $group_name]['types'][$type] = $bundle['label'];

          }

        }

      }

    }

  }

  // Create the required context for each field related to the bundle types.

  foreach ($types as $key => $field_content_type) {

    list($entity_type, $field_name) = explode(':', $key, 2);

    $types[$key]['required context'] = new ctools_context_required(t(ucfirst($entity_type)), $entity_type, array(

      'form' => array('form'),

      'type' => array_keys($content_types[$key]['types']),

    ));

    unset($content_types[$key]['types']);

  }

  return $types;

}

/**

 * Render the custom content type.

 */

function ctools_entity_form_field_content_type_render($subtype, $conf, $panel_args, $context) {

  if (empty($context) || empty($context->data)) {

    return;

  }

  // Get a shortcut to the entity.

  $entity = $context->data;

  list($entity_type, $field_name) = explode(':', $subtype, 2);

  // Load the entity type's information for this field.

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

  $field = field_info_instance($entity_type, $field_name, $ids[2]);

  // Check for field groups.

  if (empty($field) && module_exists('field_group')) {

    $groups = field_group_info_groups($entity_type, $entity->type, "form");

    $group = !empty($groups[$field_name]) ? $groups[$field_name] : NULL;

  }

  // Do not render if the entity type does not have this field or group.

  if (empty($field) && empty($group)) {

    return;

  }

  $block = new stdClass();

  if (isset($context->form)) {

    $block->content = array();

    if (!empty($field)) {

      $block->content[$field_name] = $context->form[$field_name];

      unset($context->form[$field_name]);

    }

    else {

      // Pre-render the form to populate field groups.

      if (isset($context->form['#pre_render'])) {

        foreach ($context->form['#pre_render'] as $function) {

          if (function_exists($function)) {

            $context->form = $function($context->form);

          }

        }

        unset($context->form['#pre_render']);

      }

      $block->content[$field_name] = $context->form[$field_name];

      unset($context->form[$field_name]);

    }

  }

  else {

    $block->content = t('Entity info.');

  }

  return $block;

}

/**

 * Returns the administrative title for a type.

 */

function ctools_entity_form_field_content_type_admin_title($subtype, $conf, $context) {

  // Return early because we don't have context to build this field from.

  if (!$context || !isset($context->identifier)) {

    watchdog('ctools_entity_form_field_content_type_admin_title', 'Context is missing for field: @name', array('@name' => $subtype), WATCHDOG_NOTICE);

    return t('Deleted/missing field @name', array('@name' => $subtype));

  }

  list($entity_type, $field_name) = explode(':', $subtype, 2);

  if (!empty($context->restrictions)) {

    $field = field_info_instance($entity_type, $field_name, $context->restrictions['type'][0]);

  }

  else {

    $field = array('label' => $subtype);

  }

  return t('"@s" @field form', array('@s' => $context->identifier, '@field' => $field['label']));

}

function ctools_entity_form_field_content_type_edit_form($form, &$form_state) {

  // Provide a blank form so we have a place to have context setting.

  return $form;

}