/**
* Called after fields are loaded with data.
* @param object $obj Object from which data was loaded. May be null.
* @access private
*/
protected function _post_load_data($obj)
{
parent::_post_load_data($obj);
$this->set_enabled('thumbnail_size', $this->value_for('create_thumbnail'));
$this->set_enabled('day', !$this->value_for('read_exif'));
}
