public function register_shortcode($atts, $content = null)
 {
     $atts = shortcode_atts(array('layout' => 'block', 'order_number' => 1, 'order_number_from' => 1, 'order_number_to' => 3, 'show_more_link' => ''), $atts);
     $instance = array('type' => $atts['layout'], 'from' => absint($atts['order_number']), 'to' => absint($atts['order_number']), 'more_news' => $atts['show_more_link']);
     // If the inline layout is selected then set the from and to variables
     if ('inline' === $atts['layout']) {
         $instance['from'] = absint($atts['order_number_from']);
         $instance['to'] = absint($atts['order_number_to']);
     }
     // Bound from and to between 1 and max_post_number
     $instance['from'] = PW_Functions::bound($instance['from'], 1, $this->max_post_number);
     $instance['to'] = PW_Functions::bound($instance['to'], 1, $this->max_post_number);
     // to can't be lower than from
     if ($instance['from'] > $instance['to']) {
         $instance['to'] = $instance['from'];
     }
     ob_start();
     the_widget('PW_Latest_News', $instance);
     return ob_get_clean();
 }
 /**
  * Sanitize widget form values as they are saved.
  *
  * @param array $new_instance The new options
  * @param array $old_instance The previous options
  */
 public function update($new_instance, $old_instance)
 {
     $instance = array();
     $instance['type'] = sanitize_key($new_instance['type']);
     $instance['from'] = sanitize_text_field($new_instance['from']);
     $instance['to'] = sanitize_text_field($new_instance['to']);
     if (!empty($new_instance['more_news'])) {
         $instance['more_news'] = sanitize_text_field($new_instance['more_news']);
     } else {
         $instance['more_news'] = '';
     }
     // Bound from and to between 1 and max_post_number
     $instance['from'] = PW_Functions::bound($instance['from'], 1, $this->max_post_number);
     $instance['to'] = PW_Functions::bound($instance['to'], 1, $this->max_post_number);
     // to can't be lower than from
     if ($instance['from'] > $instance['to']) {
         $instance['to'] = $instance['from'];
     }
     $instance['read_more_text'] = sanitize_text_field($new_instance['read_more_text']);
     return $instance;
 }