materio-base-d7/sites/all/modules/contrib/localisation/tmgmt/sources/node/tmgmt_node.module

<?php

/**
 * @file
 * Source plugin for the Translation Management system that handles nodes.
 */

/**
 * Implements hook_tmgmt_source_plugin_info().
 */
function tmgmt_node_tmgmt_source_plugin_info() {
  $info['node'] = array(
    'label' => t('Node'),
    'description' => t('Source handler for nodes.'),
    'plugin controller class' => 'TMGMTNodeSourcePluginController',
    'ui controller class' => 'TMGMTNodeSourceUIController',
    'views controller class' => 'TMGMTNodeSourceViewsController',
    'item types' => array(),
  );
  foreach (node_type_get_names() as $type => $name) {
    if (translation_supported_type($type)) {
      $info['node']['item types'][$type] = $name;
    }
  }
  return $info;
}

/**
 * Form element validator for the missing target language views field handler.
 */
function tmgmt_node_views_exposed_target_language_validate($form, &$form_state) {
  if (!empty($form_state['values']['tmgmt_node_missing_translation']) && $form_state['values']['language_1'] == $form_state['values']['tmgmt_node_missing_translation']) {
    form_set_error('tmgmt_node_missing_translation', t('The source and target languages must not be the same.'));
  }
}