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<?php
/**
* Class Fusion_Breadcrumbs
*
* This file does the breadcrumbs handling for the fusion framework.
*
* @author ThemeFusion
* @copyright (c) Copyright by ThemeFusion
* @link http://theme-fusion.com
* @package FusionFramework
* @since Version 1.0
*/
// Do not allow directly accessing this file.
if ( ! defined( 'ABSPATH' ) ) {
exit( 'Direct script access denied.' );
}
/**
* Handle breadcrumbs.
*/
class Fusion_Breadcrumbs {
/**
* Current post object.
*
* @var mixed
*/
private $post;
/**
* Prefix for the breadcrumb path.
*
* @var string
*/
private $home_prefix;
/**
* Separator between single breadscrumbs.
*
* @var string
*/
private $separator;
/**
* True if terms should be shown in breadcrumb path.
*
* @var bool
*/
private $show_terms;
/**
* Label for the "Home" link.
*
* @var string
*/
private $home_label;
/**
* Prefix used for pages like date archive.
*
* @var string
*/
private $tag_archive_prefix;
/**
* Prefix used for search page.
*
* @var string
*/
private $search_prefix;
/**
* Prefix used for 404 page.
*
* @var string
*/
private $error_prefix;
/**
* Do ww want to show post-type archives?
*
* @var bool
*/
private $show_post_type_archive;
/**
* The HTML markup.
*
* @var string
*/
private $html_markup;
/**
* The one, true instance of this object.
*
* @static
* @access private
* @var null|object
*/
private static $instance = null;
/**
* Class Constructor.
*/
private function __construct() {
// Initialize object variables.
$this->post = get_post( get_queried_object_id() );
// Setup default array for changeable variables.
$defaults = array(
'home_prefix' => Avada()->settings->get( 'breacrumb_prefix' ) ? Avada()->settings->get( 'breacrumb_prefix' ) : '',
'separator' => Avada()->settings->get( 'breadcrumb_separator' ) ? Avada()->settings->get( 'breadcrumb_separator' ) : '',
'show_post_type_archive' => Avada()->settings->get( 'breadcrumb_show_post_type_archive' ) ? Avada()->settings->get( 'breadcrumb_show_post_type_archive' ) : '',
'show_terms' => Avada()->settings->get( 'breadcrumb_show_categories' ) ? Avada()->settings->get( 'breadcrumb_show_categories' ) : '',
'home_label' => esc_attr__( 'Home', 'Avada' ),
'tag_archive_prefix' => esc_attr__( 'Tag:', 'Avada' ),
'search_prefix' => esc_attr__( 'Search:', 'Avada' ),
'error_prefix' => esc_attr__( '404 - Page not Found', 'Avada' ),
);
// Setup a filter for changeable variables and merge it with the defaults.
$args = apply_filters( 'fusion_breadcrumbs_defaults', $defaults );
$defaults = wp_parse_args( $args, $defaults );
$this->home_prefix = $defaults['home_prefix'];
$this->separator = $defaults['separator'];
$this->show_post_type_archive = $defaults['show_post_type_archive'];
$this->show_terms = $defaults['show_terms'];
$this->home_label = $defaults['home_label'];
$this->tag_archive_prefix = $defaults['tag_archive_prefix'];
$this->search_prefix = $defaults['search_prefix'];
$this->error_prefix = $defaults['error_prefix'];
}
/**
* Get a unique instance of this object.
*
* @return object
*/
public static function get_instance() {
if ( null === self::$instance ) {
self::$instance = new Fusion_Breadcrumbs();
}
return self::$instance;
}
/**
* Publicly accessible function to get the full breadcrumb HTML markup.
*
* @return void
*/
public function get_breadcrumbs() {
// Get the Wordpres SEO options if activated; else will return FALSE.
$options = get_option( 'wpseo_internallinks' );
// Support for Yoast Breadcrumbs.
if ( function_exists( 'yoast_breadcrumb' ) && $options && true === $options['breadcrumbs-enable'] ) {
ob_start();
yoast_breadcrumb();
$this->html_markup = ob_get_clean();
} else { // ThemeFusion Breadcrumbs.
$this->prepare_breadcrumb_html();
}
$this->wrap_breadcrumbs();
$this->output_breadcrumbs_html();
}
/**
* Prepare the full output of the breadcrumb path.
*
* @return void
*/
private function prepare_breadcrumb_html() {
// Add the path prefix.
$this->html_markup = $this->get_breadcrumb_prefix();
// Add the "Home" link.
$this->html_markup .= $this->get_breadcrumb_home();
// Woocommerce path prefix (e.g "Shop" ).
if ( class_exists( 'WooCommerce' ) && ( ( is_woocommerce() && is_archive() && ! is_shop() ) || is_cart() || is_checkout() || is_account_page() ) ) {
$this->html_markup .= $this->get_woocommerce_shop_page();
}
// Path prefix for bbPress (e.g "Forums" ).
if ( class_exists( 'bbPress' ) && is_bbpress() && ( bbp_is_topic_archive() || bbp_is_single_user() || bbp_is_search() ) ) {
$this->html_markup .= $this->get_bbpress_main_archive_page();
}
// Single Posts and Pages (of all post types).
if ( is_singular() ) {
// If the post type of the current post has an archive link, display the archive breadcrumb.
if ( isset( $this->post->post_type ) && get_post_type_archive_link( $this->post->post_type ) && $this->show_post_type_archive ) {
$this->html_markup .= $this->get_post_type_archive();
}
// If the post doesn't have parents.
if ( isset( $this->post->post_parent ) && 0 == $this->post->post_parent ) {
$this->html_markup .= $this->get_post_terms();
} // If there are parents; mostly for pages.
else {
$this->html_markup .= $this->get_post_ancestors();
}
$this->html_markup .= $this->get_breadcrumb_leaf_markup();
} else {
// Blog page is a dedicated page.
if ( is_home() && ! is_front_page() ) {
$posts_page = get_option( 'page_for_posts' );
$posts_page_title = get_the_title( $posts_page );
$this->html_markup .= $this->get_single_breadcrumb_markup( $posts_page_title );
}
// Custom post types archives.
if ( is_post_type_archive() ) {
$this->html_markup .= $this->get_post_type_archive( false );
// Search on custom post type (e.g. Woocommerce).
if ( is_search() ) {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'search' );
}
} // Taxonomy Archives.
elseif ( is_tax() || is_tag() || is_category() ) {
if ( is_tag() ) { // If we have a tag archive, add the tag prefix.
$this->html_markup .= $this->tag_archive_prefix;
}
$this->html_markup .= $this->get_taxonomies();
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'term' );
} // Date Archives.
elseif ( is_date() ) {
global $wp_locale;
// Set variables.
$year = esc_html( get_query_var( 'year' ) );
$month = get_query_var( 'monthnum' );
$month_name = $wp_locale->get_month( $month );
// Year Archive, only is a leaf.
if ( is_year() ) {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'year' );
} // Month Archive, needs year link and month leaf.
elseif ( is_month() ) {
$this->html_markup .= $this->get_single_breadcrumb_markup( $year, get_year_link( $year ) );
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'month' );
} // Day Archive, needs year and month link and day leaf.
elseif ( is_day() ) {
$this->html_markup .= $this->get_single_breadcrumb_markup( $year, get_year_link( $year ) );
$this->html_markup .= $this->get_single_breadcrumb_markup( $month_name, get_month_link( $year, $month ) );
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'day' );
}
} // Author Archives.
elseif ( is_author() ) {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'author' );
} // Search Page.
elseif ( is_search() ) {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'search' );
} // 404 Page.
elseif ( is_404() ) {
// Special treatment for Events Calendar to avoid 404 messages on list view.
if ( ( function_exists( 'tribe_is_event' ) && tribe_is_event() ) || Avada_Helper::is_events_archive() ) {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'events' );
} // Default case.
else {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( '404' );
}
} // bbPress.
elseif ( class_exists( 'bbPress' ) ) {
// Search Page.
if ( bbp_is_search() ) {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'bbpress_search' );
} // User page.
elseif ( bbp_is_single_user() ) {
$this->html_markup .= $this->get_breadcrumb_leaf_markup( 'bbpress_user' );
}
}
}
}
/**
* Wrap the breadcrumb path in a div.
*/
private function wrap_breadcrumbs() {
$this->html_markup = '<div class="fusion-breadcrumbs">' . $this->html_markup . '</div>';
}
/**
* Output the full breadcrumb HTML markup.
*
* @return void
*/
private function output_breadcrumbs_html() {
echo $this->html_markup;
}
/**
* Get the markup of the breadcrumb path prefix.
*
* @return string The HTML markup of the breadcrumb path prefix.
*/
private function get_breadcrumb_prefix() {
$prefix = '';
// If the home page is a real page.
if ( ! is_front_page() ) {
// Add chosen path prefix.
if ( $this->home_prefix ) {
$prefix = '<span class="fusion-breadcrumb-prefix">' . $this->home_prefix . ':</span>';
}
}
return $prefix;
}
/**
* Get the markup of the "Home" Link.
*
* @return string The HTML markup of the "Home" link.
*/
private function get_breadcrumb_home() {
$home_link = '';
// If the home page is a real page.
if ( ! is_front_page() ) {
$home_link = $this->get_single_breadcrumb_markup( $this->home_label, get_home_url() );
} elseif ( is_home() && Avada()->settings->get( 'blog_title' ) ) { // If the home page is the main blog page.
$home_link = $this->get_single_breadcrumb_markup( Avada()->settings->get( 'blog_title' ) );
}
return $home_link;
}
/**
* Construct the full post term tree path and add its HTML markup.
*
* @return string The HTML markup of the full term breadcrumb path.
*/
private function get_post_terms() {
$terms_markup = '';
// If terms are disabled, nothing is to do.
if ( ! $this->show_terms ) {
return $terms_markup;
}
// Get the post terms.
if ( 'post' == $this->post->post_type ) {
$taxonomy = 'category';
} // ThemeFusion Portfolio.
elseif ( 'avada_portfolio' == $this->post->post_type ) {
$taxonomy = 'portfolio_category';
} // Woocommerce.
elseif ( 'product' == $this->post->post_type && class_exists( 'WooCommerce' ) && is_woocommerce() ) {
$taxonomy = 'product_cat';
} // The Events Calendar.
elseif ( 'tribe_events' == $this->post->post_type ) {
$taxonomy = 'tribe_events_cat';
} // For other post types don't return a terms tree to reduce possible errors.
else {
return $terms_markup;
}
$terms = wp_get_object_terms( $this->post->ID, $taxonomy );
// If post does not have any terms assigned; possible e.g. portfolio posts.
if ( empty( $terms ) ) {
return $terms_markup;
}
// Check if the terms are all part of one term tree, i.e. only related terms are selected.
$terms_by_id = array();
foreach ( $terms as $term ) {
$terms_by_id[ $term->term_id ] = $term;
}
// Unset all terms that are parents of some term.
foreach ( $terms as $term ) {
unset( $terms_by_id[ $term->parent ] );
}
// If only one term is left, we have a single term tree.
if ( 1 == count( $terms_by_id ) ) {
unset( $terms );
$terms[0] = array_shift( $terms_by_id );
}
// The post is only in one term.
if ( 1 == count( $terms ) ) {
$term_parent = $terms[0]->parent;
// If the term has a parent we need its ancestors for a full tree.
if ( $term_parent ) {
// Get space separated string of term tree in slugs.
$term_tree = get_ancestors( $terms[0]->term_id, $taxonomy );
$term_tree = array_reverse( $term_tree );
$term_tree[] = get_term( $terms[0]->term_id, $taxonomy );
// Loop through the term tree.
foreach ( $term_tree as $term_id ) {
// Get the term object by its slug.
$term_object = get_term( $term_id, $taxonomy );
// Add it to the term breadcrumb markup string.
$terms_markup .= $this->get_single_breadcrumb_markup( $term_object->name, get_term_link( $term_object ) );
}
} // We have a single term, so put it out.
else {
$terms_markup = $this->get_single_breadcrumb_markup( $terms[0]->name, get_term_link( $terms[0] ) );
}
} // The post has multiple terms.
else {
// The lexicographically smallest term will be part of the breadcrump rich snippet path.
$terms_markup = $this->get_single_breadcrumb_markup( $terms[0]->name, get_term_link( $terms[0] ), false );
// Drop the first index.
array_shift( $terms );
// Loop through the rest of the terms, and add them to string comma separated.
$max_index = count( $terms );
$i = 0;
foreach ( $terms as $term ) {
// For the last index also add the separator.
if ( ++$i == $max_index ) {
$terms_markup .= ', ' . $this->get_single_breadcrumb_markup( $term->name, get_term_link( $term ), true, false );
} else {
$terms_markup .= ', ' . $this->get_single_breadcrumb_markup( $term->name, get_term_link( $term ), false, false );
}
}
}
return $terms_markup;
}
/**
* Construct the full post ancestors tree path and add its HTML markup.
*
* @return string The HTML markup of the ancestors tree.
*/
private function get_post_ancestors() {
$ancestors_markup = '';
// Get the ancestor id, order needs to be reversed.
$post_ancestor_ids = array_reverse( get_post_ancestors( $this->post ) );
// Loop through the ids to get the full tree.
foreach ( $post_ancestor_ids as $post_ancestor_id ) {
$post_ancestor = get_post( $post_ancestor_id );
$ancestors_markup .= $this->get_single_breadcrumb_markup( $post_ancestor->post_title, get_permalink( $post_ancestor->ID ) );
}
return $ancestors_markup;
}
/**
* Construct the full term ancestors tree path and add its HTML markup.
*
* @return string The HTML markup of the term ancestors tree.
*/
private function get_taxonomies() {
global $wp_query;
$term = $wp_query->get_queried_object();
$terms_markup = '';
// Make sure we have hierarchical taxonomy and parents.
if ( 0 != $term->parent && is_taxonomy_hierarchical( $term->taxonomy ) ) {
$term_ancestors = get_ancestors( $term->term_id, $term->taxonomy );
$term_ancestors = array_reverse( $term_ancestors );
// Loop through ancestors to get the full tree.
foreach ( $term_ancestors as $term_ancestor ) {
$term_object = get_term( $term_ancestor, $term->taxonomy );
$terms_markup .= $this->get_single_breadcrumb_markup( $term_object->name, get_term_link( $term_object->term_id, $term->taxonomy ) );
}
}
return $terms_markup;
}
/**
* Adds the markup of a post type archive.
*
* @param string $linked Linked or not linked.
* @return string The HTML markup of the post type archive.
*/
private function get_post_type_archive( $linked = true ) {
global $wp_query;
$link = $archive_title = '';
$post_type = $wp_query->query_vars['post_type'];
if ( ! $post_type ) {
$post_type = get_post_type();
}
$post_type_object = get_post_type_object( $post_type );
// Check if we have a post type object.
if ( is_object( $post_type_object ) ) {
// Woocommerce: archive name should be same as shop page name.
if ( 'product' == $post_type && $woocommerce_shop_page = $this->get_woocommerce_shop_page( $linked ) ) {
return $woocommerce_shop_page;
}
// Make sure that the Forums slug and link are correct for bbPress.
if ( class_exists( 'bbPress' ) && 'topic' == $post_type ) {
$archive_title = bbp_get_forum_archive_title();
if ( $linked ) {
$link = get_post_type_archive_link( bbp_get_forum_post_type() );
}
return $this->get_single_breadcrumb_markup( $archive_title, $link );
}
// Use its name as fallback.
$archive_title = $post_type_object->name;
// Default case
// Check if the post type has a non empty label.
if ( isset( $post_type_object->label ) && '' !== $post_type_object->label ) {
$archive_title = $post_type_object->label;
} // Alternatively check for a non empty menu name.
elseif ( isset( $post_type_object->labels->menu_name ) && '' !== $post_type_object->labels->menu_name ) {
$archive_title = $post_type_object->labels->menu_name;
}
}
// Check if the breadcrumb should be linked.
if ( $linked ) {
$link = get_post_type_archive_link( $post_type );
}
return $this->get_single_breadcrumb_markup( $archive_title, $link );
}
/**
* Adds the markup of the woocommerce shop page.
*
* @param bool $linked Linked or not linked.
* @return string The HTML markup of the woocommerce shop page.
*/
private function get_woocommerce_shop_page( $linked = true ) {
global $wp_query;
$post_type = 'product';
$post_type_object = get_post_type_object( $post_type );
$shop_page_markup = $link = '';
// Make sure we are on a woocommerce page.
if ( is_object( $post_type_object ) && class_exists( 'WooCommerce' ) && ( is_woocommerce() || is_cart() || is_checkout() || is_account_page() ) ) {
// Get shop page id and then its name.
$shop_page_name = wc_get_page_id( 'shop' ) ? get_the_title( wc_get_page_id( 'shop' ) ) : '';
// Use the archive name if no shop page was set.
if ( ! $shop_page_name ) {
$shop_page_name = $post_type_object->labels->name;
}
// Check if the breadcrumb should be linked.
if ( $linked ) {
$link = get_post_type_archive_link( $post_type );
}
$shop_page_markup = $this->get_single_breadcrumb_markup( $shop_page_name, $link );
}
return $shop_page_markup;
}
/**
* Adds the markup of the bbpress main forum archive.
*
* @return string The HTML markup of the bbpress main forum archive.
*/
private function get_bbpress_main_archive_page() {
global $wp_query;
return $this->get_single_breadcrumb_markup( bbp_get_forum_archive_title(), get_post_type_archive_link( 'forum' ) );
}
/**
* Adds the markup of the breadcrumb leaf.
*
* @param string $object_type ID of the current query object.
*
* @return string The HTML markup of the breadcrumb leaf.
*/
private function get_breadcrumb_leaf_markup( $object_type = '' ) {
global $wp_query, $wp_locale;
switch ( $object_type ) {
case 'term':
$term = $wp_query->get_queried_object();
$title = $term->name;
break;
case 'year':
$title = esc_html( get_query_var( 'year' ) );
break;
case 'month':
$title = $wp_locale->get_month( get_query_var( 'monthnum' ) );
break;
case 'day':
$title = get_query_var( 'day' );
break;
case 'author':
$user = $wp_query->get_queried_object();
$title = $user->display_name;
break;
case 'search':
$title = $this->search_prefix . ' ' . esc_html( get_search_query() );
break;
case '404':
$title = $this->error_prefix;
break;
case 'bbpress_search':
$title = $this->search_prefix . ' ' . urldecode( esc_html( get_query_var( 'bbp_search' ) ) );
break;
case 'bbpress_user':
$current_user_id = bbp_get_user_id( 0, true, false );
$current_user = get_userdata( $current_user_id );
$title = $current_user->display_name;
break;
case 'events':
$title = tribe_get_events_title();
break;
default:
$title = get_the_title( $this->post->ID );
break;
}
return '<span class="breadcrumb-leaf">' . $title . '</span>';
}
/**
* Adds the markup of a single breadcrumb.
*
* @param string $title The title that should be displayed.
* @param string $link The URL of the breadcrumb.
* @param boolean $separator Set to TRUE to show the separator at the end of the breadcrumb.
* @param boolean $microdata Set to FALSE to make sure we get a link not being part of the breadcrumb microdata path.
*
* @return string The HTML markup of a single breadcrumb.
*/
private function get_single_breadcrumb_markup( $title, $link = '', $separator = true, $microdata = true ) {
// Init vars.
$microdata_itemscope = $microdata_url = $microdata_title = $separator_markup = '';
// Setup the elements attributes for breadcrumb microdata rich snippets.
if ( $microdata && Avada()->settings->get( 'disable_date_rich_snippet_pages' ) ) {
$microdata_itemscope = 'itemscope itemtype="http://data-vocabulary.org/Breadcrumb"';
$microdata_url = 'itemprop="url"';
$microdata_title = 'itemprop="title"';
}
$breadcrumb_content = '<span ' . $microdata_title . '>' . $title . '</span>';
// If a link is set add its markup.
if ( $link ) {
$breadcrumb_content = '<a ' . $microdata_url . ' href="' . $link . '">' . $breadcrumb_content . '</a>';
}
// If a separator should be added, do it.
if ( $separator ) {
$separator_markup = '<span class="fusion-breadcrumb-sep">' . $this->separator . '</span>';
}
return '<span ' . $microdata_itemscope . '>' . $breadcrumb_content . '</span>' . $separator_markup;
}
}
/* Omit closing PHP tag to avoid "Headers already sent" issues. */