output_breadcrumbs();
}
/**
* コンストラクタ
*/
public function __construct() {
add_action( 'wp', array( $this, 'maybe_hook_breadcrumbs' ) );
}
/**
* 条件を満たす場合にヘッダーへフック
*/
public function maybe_hook_breadcrumbs() {
if ( ! $this->should_render() ) {
return;
}
add_action( 'wp_body_open', array( $this, 'render_block' ) );
add_action( 'tha_breadcrumb_top', array( $this, 'output_breadcrumbs' ) );
add_action( 'tha_breadcrumb_after', array( $this, 'close_block' ) );
add_action( 'tha_breadcrumb_bottom', array( $this, 'render_block' ) ); // fallback for theme structure
add_action( 'get_footer', array( $this, 'buffer_output' ) ); // fallback if no hook
}
/**
* パンくず有効判定
*
* @return bool
*/
private function should_render() {
if ( ! apply_filters( 'avc_ais_show_breadcrumbs', true ) ) {
return false;
}
if ( ! is_singular() && ! is_archive() && ! is_home() ) {
return false;
}
$options = get_option( 'avc_ais_options', array() );
if ( ! is_array( $options ) ) {
$options = array();
}
return $this->is_html_output_enabled( $options );
}
/**
* HTMLパンくず出力の有効判定
*
* @param array $options
* @return bool
*/
private function is_html_output_enabled( array $options ) {
if ( array_key_exists( 'avc_ais_breadcrumbs_html_enabled', $options ) ) {
return (bool) $options['avc_ais_breadcrumbs_html_enabled'];
}
if ( array_key_exists( 'enable_breadcrumbs', $options ) ) {
return (bool) $options['enable_breadcrumbs'];
}
return false;
}
/**
* フックのないテーマ向けの出力
*/
public function buffer_output() {
add_action(
'wp_footer',
function () {
if ( ! $this->should_render() ) {
return;
}
echo '';
},
5
);
}
/**
* コンテナを開始
*/
public function render_block() {
echo '';
}
/**
* コンテナを閉じる
*/
public function close_block() {
echo '
';
}
/**
* パンくずリストを出力する
*
* @return void
*/
public function output_breadcrumbs() {
if ( ! $this->should_render() ) {
return;
}
$items = $this->get_items();
if ( empty( $items ) ) {
return;
}
echo '';
}
/**
* 表示用／スキーマ用のパンくず配列を取得
*
* @param array $context コンテキスト（省略時は ContentResolver から取得）
* @return array
*/
public function get_items( array $context = array() ) {
$should_cache = empty( $context );
if ( null !== $this->cached_items && $should_cache ) {
return $this->cached_items;
}
if ( $should_cache ) {
$resolver = new AVC_AIS_ContentResolver();
$context = $resolver->resolve_page_context();
}
$items = $this->build_items( $context );
$items = apply_filters( 'avc_ais_breadcrumb_items', $items, $context );
if ( $should_cache ) {
$this->cached_items = $items;
}
return $items;
}
/**
* パンくず配列を構築
*
* @param array $context
* @return array
*/
private function build_items( array $context ) {
if ( isset( $context['type'] ) && 'front_page' === $context['type'] ) {
return array();
}
$items = array();
$home_label = apply_filters( 'avc_ais_breadcrumb_home_label', __( 'Home', 'aivec-ai-search-schema' ) );
$items[] = array(
'label' => $home_label,
'url' => home_url( '/' ),
);
if ( ! empty( $context['post_id'] ) ) {
$ancestors = array_reverse( get_post_ancestors( $context['post_id'] ) );
foreach ( $ancestors as $ancestor_id ) {
$items[] = array(
'label' => get_the_title( $ancestor_id ),
'url' => get_permalink( $ancestor_id ),
);
}
$items[] = array(
'label' => $context['title'],
'url' => $context['url'],
);
} elseif (
isset( $context['type'] )
&& in_array( $context['type'], array( 'category', 'tag', 'taxonomy' ), true )
&& ! empty( $context['term'] )
&& $context['term'] instanceof WP_Term
) {
$term = $context['term'];
if ( is_taxonomy_hierarchical( $term->taxonomy ) ) {
$ancestors = array_reverse( get_ancestors( $term->term_id, $term->taxonomy ) );
foreach ( $ancestors as $ancestor_id ) {
$ancestor = get_term( $ancestor_id, $term->taxonomy );
if ( $ancestor && ! is_wp_error( $ancestor ) ) {
$items[] = array(
'label' => $ancestor->name,
'url' => get_term_link( $ancestor ),
);
}
}
}
$items[] = array(
'label' => $context['title'],
'url' => $context['url'],
);
} elseif (
isset( $context['type'] )
&& in_array( $context['type'], array( 'search', 'author', 'archive', 'blog_home' ), true )
) {
$items[] = array(
'label' => $context['title'],
'url' => $context['url'],
);
} elseif ( ! is_front_page() ) {
$items[] = array(
'label' => $context['title'],
'url' => $context['url'],
);
}
return ( count( $items ) > 1 ) ? $items : array();
}
}