carousel_id = 'appw-carousel-' . self::$instance_id ; $this->carousel_inner_items = '' ; $this->number_of_inner_items = 0 ; $this->carousel_indicators = '' ; $this->slide_to_index = 0 ; self::$instance_id++; } public function add_post_markup( $post_markup ) { $this->append_post_markup_to_inner_items( $post_markup ) ; $this->append_to_carousel_indicators() ; $this->number_of_inner_items++ ; } private function append_post_markup_to_inner_items( $post_markup ) { $is_active = (0 == $this->slide_to_index ) ? 'active' : '' ; $this->carousel_inner_items .= "
{$post_markup}
\n" ; } private function append_to_carousel_indicators(){ $is_active = (0 == $this->slide_to_index ) ? 'active' : '' ; $this->carousel_indicators .= "
  • " ; $this->slide_to_index++ ; } private function maybe_get_controls() { if ( $this->number_of_inner_items > 1 ) { return " " ; } } private function maybe_get_indicators() { if ( $this->number_of_inner_items > 1 ) { return "
      {$this->carousel_indicators}
    \n" ; } } public function get() { $controls = $this->maybe_get_controls() ; $indicators = $this->maybe_get_indicators() ; return " \n" ; } }