includes/class-wc-breadcrumb.php
<?php
/**
* WC_Breadcrumb class.
*
* @package WooCommerce\Classes
* @version 2.3.0
*/
defined( 'ABSPATH' ) || exit;
/**
* Breadcrumb class.
*/
class WC_Breadcrumb {
/**
* Breadcrumb trail.
*
* @var array
*/
protected $crumbs = array();
/**
* Add a crumb so we don't get lost.
*
* @param string $name Name.
* @param string $link Link.
*/
public function add_crumb( $name, $link = '' ) {
$this->crumbs[] = array(
wp_strip_all_tags( $name ),
$link,
);
}
/**
* Reset crumbs.
*/
public function reset() {
$this->crumbs = array();
}
/**
* Get the breadcrumb.
*
* @return array
*/
public function get_breadcrumb() {
return apply_filters( 'woocommerce_get_breadcrumb', $this->crumbs, $this );
}
/**
* Generate breadcrumb trail.
*
* @return array of breadcrumbs
*/
public function generate() {
$conditionals = array(
'is_home',
'is_404',
'is_attachment',
'is_single',
'is_product_category',
'is_product_tag',
'is_shop',
'is_page',
'is_post_type_archive',
'is_category',
'is_tag',
'is_author',
'is_date',
'is_tax',
);
if ( ( ! is_front_page() && ! ( is_post_type_archive() && intval( get_option( 'page_on_front' ) ) === wc_get_page_id( 'shop' ) ) ) || is_paged() ) {
foreach ( $conditionals as $conditional ) {
if ( call_user_func( $conditional ) ) {
call_user_func( array( $this, 'add_crumbs_' . substr( $conditional, 3 ) ) );
break;
}
}
$this->search_trail();
$this->paged_trail();
return $this->get_breadcrumb();
}
return array();
}
/**
* Prepend the shop page to shop breadcrumbs.
*/
protected function prepend_shop_page() {
$permalinks = wc_get_permalink_structure();
$shop_page_id = wc_get_page_id( 'shop' );
$shop_page = get_post( $shop_page_id );
// If permalinks contain the shop page in the URI prepend the breadcrumb with shop.
if ( $shop_page_id && $shop_page && isset( $permalinks['product_base'] ) && strstr( $permalinks['product_base'], '/' . $shop_page->post_name ) && intval( get_option( 'page_on_front' ) ) !== $shop_page_id ) {
$this->add_crumb( get_the_title( $shop_page ), get_permalink( $shop_page ) );
}
}
/**
* Is home trail..
*/
protected function add_crumbs_home() {
$this->add_crumb( single_post_title( '', false ) );
}
/**
* 404 trail.
*/
protected function add_crumbs_404() {
$this->add_crumb( __( 'Error 404', 'woocommerce' ) );
}
/**
* Attachment trail.
*/
protected function add_crumbs_attachment() {
global $post;
$this->add_crumbs_single( $post->post_parent, get_permalink( $post->post_parent ) );
$this->add_crumb( get_the_title(), get_permalink() );
}
/**
* Single post trail.
*
* @param int $post_id Post ID.
* @param string $permalink Post permalink.
*/
protected function add_crumbs_single( $post_id = 0, $permalink = '' ) {
if ( ! $post_id ) {
global $post;
} else {
$post = get_post( $post_id ); // WPCS: override ok.
}
if ( ! $permalink ) {
$permalink = get_permalink( $post );
}
if ( 'product' === get_post_type( $post ) ) {
$this->prepend_shop_page();
$terms = wc_get_product_terms(
$post->ID,
'product_cat',
apply_filters(
'woocommerce_breadcrumb_product_terms_args',
array(
'orderby' => 'parent',
'order' => 'DESC',
)
)
);
if ( $terms ) {
$main_term = apply_filters( 'woocommerce_breadcrumb_main_term', $terms[0], $terms );
$this->term_ancestors( $main_term->term_id, 'product_cat' );
$this->add_crumb( $main_term->name, get_term_link( $main_term ) );
}
} elseif ( 'post' !== get_post_type( $post ) ) {
$post_type = get_post_type_object( get_post_type( $post ) );
if ( ! empty( $post_type->has_archive ) ) {
$this->add_crumb( $post_type->labels->singular_name, get_post_type_archive_link( get_post_type( $post ) ) );
}
} else {
$cat = current( get_the_category( $post ) );
if ( $cat ) {
$this->term_ancestors( $cat->term_id, 'category' );
$this->add_crumb( $cat->name, get_term_link( $cat ) );
}
}
$this->add_crumb( get_the_title( $post ), $permalink );
}
/**
* Page trail.
*/
protected function add_crumbs_page() {
global $post;
if ( $post->post_parent ) {
$parent_crumbs = array();
$parent_id = $post->post_parent;
while ( $parent_id ) {
$page = get_post( $parent_id );
$parent_id = $page->post_parent;
$parent_crumbs[] = array( get_the_title( $page->ID ), get_permalink( $page->ID ) );
}
$parent_crumbs = array_reverse( $parent_crumbs );
foreach ( $parent_crumbs as $crumb ) {
$this->add_crumb( $crumb[0], $crumb[1] );
}
}
$this->add_crumb( get_the_title(), get_permalink() );
$this->endpoint_trail();
}
/**
* Product category trail.
*/
protected function add_crumbs_product_category() {
$current_term = $GLOBALS['wp_query']->get_queried_object();
$this->prepend_shop_page();
$this->term_ancestors( $current_term->term_id, 'product_cat' );
$this->add_crumb( $current_term->name, get_term_link( $current_term, 'product_cat' ) );
}
/**
* Product tag trail.
*/
protected function add_crumbs_product_tag() {
$current_term = $GLOBALS['wp_query']->get_queried_object();
$this->prepend_shop_page();
/* translators: %s: product tag */
$this->add_crumb( sprintf( __( 'Products tagged “%s”', 'woocommerce' ), $current_term->name ), get_term_link( $current_term, 'product_tag' ) );
}
/**
* Shop breadcrumb.
*/
protected function add_crumbs_shop() {
if ( intval( get_option( 'page_on_front' ) ) === wc_get_page_id( 'shop' ) ) {
return;
}
$_name = wc_get_page_id( 'shop' ) ? get_the_title( wc_get_page_id( 'shop' ) ) : '';
if ( ! $_name ) {
$product_post_type = get_post_type_object( 'product' );
$_name = $product_post_type->labels->name;
}
$this->add_crumb( $_name, get_post_type_archive_link( 'product' ) );
}
/**
* Post type archive trail.
*/
protected function add_crumbs_post_type_archive() {
$post_type = get_post_type_object( get_post_type() );
if ( $post_type ) {
$this->add_crumb( $post_type->labels->name, get_post_type_archive_link( get_post_type() ) );
}
}
/**
* Category trail.
*/
protected function add_crumbs_category() {
$this_category = get_category( $GLOBALS['wp_query']->get_queried_object() );
if ( 0 !== intval( $this_category->parent ) ) {
$this->term_ancestors( $this_category->term_id, 'category' );
}
$this->add_crumb( single_cat_title( '', false ), get_category_link( $this_category->term_id ) );
}
/**
* Tag trail.
*/
protected function add_crumbs_tag() {
$queried_object = $GLOBALS['wp_query']->get_queried_object();
/* translators: %s: tag name */
$this->add_crumb( sprintf( __( 'Posts tagged “%s”', 'woocommerce' ), single_tag_title( '', false ) ), get_tag_link( $queried_object->term_id ) );
}
/**
* Add crumbs for date based archives.
*/
protected function add_crumbs_date() {
if ( is_year() || is_month() || is_day() ) {
$this->add_crumb( get_the_time( 'Y' ), get_year_link( get_the_time( 'Y' ) ) );
}
if ( is_month() || is_day() ) {
$this->add_crumb( get_the_time( 'F' ), get_month_link( get_the_time( 'Y' ), get_the_time( 'm' ) ) );
}
if ( is_day() ) {
$this->add_crumb( get_the_time( 'd' ) );
}
}
/**
* Add crumbs for taxonomies
*/
protected function add_crumbs_tax() {
$this_term = $GLOBALS['wp_query']->get_queried_object();
$taxonomy = get_taxonomy( $this_term->taxonomy );
$this->add_crumb( $taxonomy->labels->name );
if ( 0 !== intval( $this_term->parent ) ) {
$this->term_ancestors( $this_term->term_id, $this_term->taxonomy );
}
$this->add_crumb( single_term_title( '', false ), get_term_link( $this_term->term_id, $this_term->taxonomy ) );
}
/**
* Add a breadcrumb for author archives.
*/
protected function add_crumbs_author() {
global $author;
$userdata = get_userdata( $author );
/* translators: %s: author name */
$this->add_crumb( sprintf( __( 'Author: %s', 'woocommerce' ), $userdata->display_name ) );
}
/**
* Add crumbs for a term.
*
* @param int $term_id Term ID.
* @param string $taxonomy Taxonomy.
*/
protected function term_ancestors( $term_id, $taxonomy ) {
$ancestors = get_ancestors( $term_id, $taxonomy );
$ancestors = array_reverse( $ancestors );
foreach ( $ancestors as $ancestor ) {
$ancestor = get_term( $ancestor, $taxonomy );
if ( ! is_wp_error( $ancestor ) && $ancestor ) {
$this->add_crumb( $ancestor->name, get_term_link( $ancestor ) );
}
}
}
/**
* Endpoints.
*/
protected function endpoint_trail() {
$action = isset( $_GET['action'] ) ? sanitize_text_field( wp_unslash( $_GET['action'] ) ) : '';
$endpoint = is_wc_endpoint_url() ? WC()->query->get_current_endpoint() : '';
$endpoint_title = $endpoint ? WC()->query->get_endpoint_title( $endpoint, $action ) : '';
if ( $endpoint_title ) {
$this->add_crumb( $endpoint_title );
}
}
/**
* Add a breadcrumb for search results.
*/
protected function search_trail() {
if ( is_search() ) {
/* translators: %s: search term */
$this->add_crumb( sprintf( __( 'Search results for “%s”', 'woocommerce' ), get_search_query() ), remove_query_arg( 'paged' ) );
}
}
/**
* Add a breadcrumb for pagination.
*/
protected function paged_trail() {
if ( get_query_var( 'paged' ) && 'subcategories' !== woocommerce_get_loop_display_mode() ) {
/* translators: %d: page number */
$this->add_crumb( sprintf( __( 'Page %d', 'woocommerce' ), get_query_var( 'paged' ) ) );
}
}
}