public function my_current_screen($screen)
 {
     if (defined('DOING_AJAX') && DOING_AJAX) {
         return $screen;
     }
     $this->post_types = apply_filters('wplb_post_type_feature', wplb_get_post_types(array(), array('attachment')));
     foreach ($this->post_types as $key => $val) {
         add_filter('views_edit-' . $key, array(&$this, 'add_views_link'));
     }
     return $screen;
 }
 protected function post_type($instance, $options)
 {
     $defaults = array('name' => '', 'label' => __('Select', 'wplb'), 'class' => '', 'desc' => '', 'options' => wplb_get_post_types(), 'std' => 'post', 'multiple' => false, 'size' => 5);
     $defaults = apply_filters('wplb_widgets_post_type_default_values', $defaults);
     $options = wp_parse_args($options, $defaults);
     return $this->select($instance, $options);
 }