carousel_id = 'appw-carousel-' . self::$instance_id; self::$instance_id++; $this->carousel_inner_items = ''; $this->number_of_inner_items = 0; $this->carousel_indicators = ''; $this->slide_to_index = 0; } /** * Add the post markup to the carousel container. * * @param string $post_preview_container Markup for the post preview. * @return void. */ public function add_post_markup( $post_preview_container ) { foreach ( $post_preview_container as $post_preview ) { $this->append_post_markup_to_inner_items( $post_preview ); $this->append_to_carousel_indicators(); $this->number_of_inner_items++; } } /** * Add Bootstrap inner items markup for each post. * * @param string $post_markup Markup to append to the carousel inner items. * @return void. */ public function append_post_markup_to_inner_items( $post_markup ) { $is_active = ( 0 === $this->slide_to_index ) ? 'active' : ''; $this->carousel_inner_items .= '
' . wp_kses_post( $post_markup ) . '
'; } /** * Add markup to carousel indicators for each post. * * @return void. */ public function append_to_carousel_indicators() { $is_active = ( 0 === $this->slide_to_index ) ? 'active' : ''; $list_item = '
  • '; $this->carousel_indicators .= $list_item; $this->slide_to_index++; } /** * Conditionally get the carousel controls. * * @return string $control_markup Bootstrap carousel control markup. */ public function maybe_get_controls() { if ( $this->has_more_than_one_post() ) { return ' '; } else { return ''; } } /** * Conditionally return Bootstrap indicator markup. * * @return string $indicator_markup Bootstrap carousel indicator markup. */ public function maybe_get_indicators() { if ( $this->has_more_than_one_post() ) { return '
      ' . $this->carousel_indicators . '
    '; } else { return ''; } } /** * Get the full markup of the Bootstrap carousel. * * @return string $markup Full Bootstrap carousel markup, with the posts. */ public function get() { return ''; } /** * Whether the carousel has more than a single post. * * @return boolean $has_more_than_one Whether the Bootstrap carousel has more than one post. */ public function has_more_than_one_post() { return ( 1 < $this->number_of_inner_items ); } }