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<?php
/*
Copyright 2015-2024 John Havlik (email : john.havlik@mtekk.us)
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
require_once(dirname(__FILE__) . '/includes/block_direct_access.php');
//The trail class
class bcn_breadcrumb_trail
{
//Our member variables
const version = '7.3.0';
//An array of breadcrumbs
public $breadcrumbs = array();
public $trail = array();
//The options
public $opt;
//Default constructor
public function __construct()
{
//@see https://core.trac.wordpress.org/ticket/10527
if(!is_textdomain_loaded('breadcrumb-navxt'))
{
load_plugin_textdomain('breadcrumb-navxt', false, 'breadcrumb-navxt/languages');
}
$this->trail = &$this->breadcrumbs;
//Initilize with default option values
$this->opt = array(
//Should the mainsite be shown
'bmainsite_display' => true,
//The breadcrumb template for the main site
'Hmainsite_template' => bcn_breadcrumb::get_default_template(),
//The breadcrumb template for the main site, used when an anchor is not needed
'Hmainsite_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//Should the home page be shown
'bhome_display' => true,
//The breadcrumb template for the home page
'Hhome_template' => bcn_breadcrumb::get_default_template(),
//The breadcrumb template for the home page, used when an anchor is not needed
'Hhome_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//Should the blog page be shown globally
'bblog_display' => true,
//Separator that is placed between each item in the breadcrumb trial, but not placed before
//the first and not after the last breadcrumb
'hseparator' => ' > ',
//Separator that is placed between each item in the breadcrumb trial on the 2nd and higher dimensions, but not placed before
//the first and not after the last breadcrumb
'hseparator_higher_dim' => ', ',
//Whether or not we should trim the breadcrumb titles
'blimit_title' => false,
//The maximum title length
'amax_title_length' => 20,
//Current item options
'bcurrent_item_linked' => false,
//Static page options
//Should the trail include the hierarchy of the page
'bpost_page_hierarchy_display' => true,
//Should the post parent be followed first for this type, then fallback to the hierarchy type
'bpost_page_hierarchy_parent_first' => false,
//What hierarchy should be shown leading to the page
'Epost_page_hierarchy_type' => 'BCN_POST_PARENT',
//The anchor template for page breadcrumbs
'Hpost_page_template' => bcn_breadcrumb::get_default_template(),
//The anchor template for page breadcrumbs, used when an anchor is not needed
'Hpost_page_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//Just a link to the page on front property
'apost_page_root' => get_option('page_on_front'),
//Paged options
//The template for paged breadcrumb
'Hpaged_template' => sprintf('<span class="%%type%%">%1$s</span>', esc_attr__('Page %htitle%', 'breadcrumb-navxt')),
//Should we try filling out paged information
'bpaged_display' => false,
//The post options previously singleblogpost
//The breadcrumb template for post breadcrumbs
'Hpost_post_template' => bcn_breadcrumb::get_default_template(),
//The breadcrumb template for post breadcrumbs, used when an anchor is not needed
'Hpost_post_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//Just a link for the page for posts
'apost_post_root' => get_option('page_for_posts'),
//Should the trail include the hierarchy of the post
'bpost_post_hierarchy_display' => true,
//Should the post parent be followed first for this type, then fallback to the hierarchy type
'bpost_post_hierarchy_parent_first' => false,
//Should the trail reflect the referer taxonomy or not
'bpost_post_taxonomy_referer' => false,
//What hierarchy should be shown leading to the post, tag or category
'Epost_post_hierarchy_type' => 'category',
//Attachment settings
'bpost_attachment_archive_display' => false,
'bpost_attachment_hierarchy_display' => true,
//Should the post parent be followed first for this type, then fallback to the hierarchy type
'bpost_attachment_hierarchy_parent_first' => true,
//Should the trail reflect the referer taxonomy or not
'bpost_attachment_taxonomy_referer' => false,
//What hierarchy should be shown leading to the attachment
'Epost_attachment_hierarchy_type' => 'BCN_POST_PARENT',
//Give an invlaid page ID for the attachement root
'apost_attachment_root' => 0,
//The breadcrumb template for attachment breadcrumbs
'Hpost_attachment_template' => bcn_breadcrumb::get_default_template(),
//The breadcrumb template for attachment breadcrumbs, used when an anchor is not needed
'Hpost_attachment_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//404 page settings
//The template for 404 breadcrumbs
'H404_template' => bcn_breadcrumb::default_template_no_anchor,
//The text to be shown in the breadcrumb for a 404 page
'S404_title' => __('404', 'breadcrumb-navxt'),
//Search page options
//The breadcrumb template for search breadcrumbs
'Hsearch_template' => sprintf('<span property="itemListElement" typeof="ListItem"><span property="name">%1$s</span><meta property="position" content="%%position%%"></span>',
sprintf(esc_attr__('Search results for '%1$s'', 'breadcrumb-navxt'),
sprintf('<a property="item" typeof="WebPage" title="%1$s" href="%%link%%" class="%%type%%" bcn-aria-current>%%htitle%%</a>', esc_attr__('Go to the first page of search results for %title%.', 'breadcrumb-navxt')))),
//The breadcrumb template for search breadcrumbs, used when an anchor is not necessary
'Hsearch_template_no_anchor' => sprintf('<span class="%%type%%">%1$s</span>',
sprintf(esc_attr__('Search results for '%1$s'', 'breadcrumb-navxt'), '%htitle%')),
//Tag related stuff
//The breadcrumb template for tag breadcrumbs
'Htax_post_tag_template' => sprintf('<span property="itemListElement" typeof="ListItem"><a property="item" typeof="WebPage" title="%1$s" href="%%link%%" class="%%type%%" bcn-aria-current><span property="name">%%htitle%%</span></a><meta property="position" content="%%position%%"></span>', esc_attr__('Go to the %title% tag archives.', 'breadcrumb-navxt')),
//The breadcrumb template for tag breadcrumbs, used when an anchor is not necessary
'Htax_post_tag_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//Post format related stuff
//The breadcrumb template for post format breadcrumbs, used when an anchor is not necessary
'Htax_post_format_template' => sprintf('<span property="itemListElement" typeof="ListItem"><a property="item" typeof="WebPage" title="%1$s" href="%%link%%" class="%%type%%" bcn-aria-current><span property="name">%%htitle%%</span></a><meta property="position" content="%%position%%"></span>', esc_attr__('Go to the %title% archives.', 'breadcrumb-navxt')),
//The breadcrumb template for post format breadcrumbs
'Htax_post_format_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//Author page stuff
//The anchor template for author breadcrumbs
'Hauthor_template' => sprintf('<span property="itemListElement" typeof="ListItem"><span property="name">%1$s</span><meta property="position" content="%%position%%"></span>',
sprintf(esc_attr__('Articles by: %1$s', 'breadcrumb-navxt'),
sprintf('<a title="%1$s" href="%%link%%" class="%%type%%" bcn-aria-current>%%htitle%%</a>', esc_attr__('Go to the first page of posts by %title%.', 'breadcrumb-navxt')))),
//The anchor template for author breadcrumbs, used when anchors are not needed
'Hauthor_template_no_anchor' => sprintf('<span class="%%type%%">%1$s</span>',
sprintf(esc_attr__('Articles by: %1$s', 'breadcrumb-navxt'), '%htitle%')),
//Which of the various WordPress display types should the author breadcrumb display
'Eauthor_name' => 'display_name',
//Give an invlaid page ID for the author root
'aauthor_root' => 0,
//Category stuff
//The breadcrumb template for category breadcrumbs
'Htax_category_template' => sprintf('<span property="itemListElement" typeof="ListItem"><a property="item" typeof="WebPage" title="%1$s" href="%%link%%" class="%%type%%" bcn-aria-current><span property="name">%%htitle%%</span></a><meta property="position" content="%%position%%"></span>', esc_attr__('Go to the %title% category archives.', 'breadcrumb-navxt')),
//The breadcrumb template for category breadcrumbs, used when anchors are not needed
'Htax_category_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor,
//The breadcrumb template for date breadcrumbs
'Hdate_template' => sprintf('<span property="itemListElement" typeof="ListItem"><a property="item" typeof="WebPage" title="%1$s" href="%%link%%" class="%%type%%" bcn-aria-current><span property="name">%%htitle%%</span></a><meta property="position" content="%%position%%"></span>', esc_attr__('Go to the %title% archives.', 'breadcrumb-navxt')),
//The breadcrumb template for date breadcrumbs, used when anchors are not needed
'Hdate_template_no_anchor' => bcn_breadcrumb::default_template_no_anchor
);
}
/**
* Adds a breadcrumb to the breadcrumb trail
*
* @param bcn_breadcrumb $object Breadcrumb to add to the trail
*
* @return pointer to the just added Breadcrumb
*/
public function &add(bcn_breadcrumb $object)
{
$this->breadcrumbs[] = $object;
//Return the just added object
return $this->breadcrumbs[count($this->breadcrumbs) - 1];
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for a search page
*
* @param string $search_query The search query that was performed
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
*/
protected function do_search($search_query, $is_paged = false)
{
//Place the breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add( new bcn_breadcrumb(
$search_query,
$this->opt['Hsearch_template_no_anchor'],
array('search', 'current-item'),
get_search_link($search_query)));
//If we're paged, or allowing the current item to be linked, let's link to the first page
if($this->opt['bcurrent_item_linked'] || ($is_paged && $this->opt['bpaged_display']))
{
//Since we are paged and are linking the root breadcrumb, time to change to the regular template
$breadcrumb->set_template($this->opt['Hsearch_template']);
$breadcrumb->set_linked(true);
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for an author page
*
* @param string $author_data The author to generate the breadcrumb for
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
*/
protected function do_author($author_data, $is_paged = false)
{
//Setup array of valid author_name values
$valid_author_name = array('display_name', 'nickname', 'first_name', 'last_name');
//Make sure user picks only safe values
if(in_array($this->opt['Eauthor_name'], $valid_author_name))
{
//Place the breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
get_the_author_meta($this->opt['Eauthor_name'], $author_data->ID),
$this->opt['Hauthor_template_no_anchor'],
array('author', 'current-item'),
get_author_posts_url($author_data->ID),
$author_data->ID));
//If we're paged, or allowing the current item to be linked, let's link to the first page
if($this->opt['bcurrent_item_linked'] || ($is_paged && $this->opt['bpaged_display']))
{
//Set the template to our one containing an anchor
$breadcrumb->set_template($this->opt['Hauthor_template']);
$breadcrumb->set_linked(true);
}
}
}
/**
* Determines the taxonomy name represented by the specified query var
*
* @param string $query_var The query var to attempt to find the corresponding taxonomy
*
* @return string|bool Either the name of the taxonomy corresponding to the query_var or false if no taxonomy exists for the specified query_var
*/
protected function query_var_to_taxonomy($query_var)
{
global $wp_taxonomies;
foreach($wp_taxonomies as $taxonomy)
{
if($taxonomy->query_var === $query_var)
{
return $taxonomy->name;
}
}
return false;
}
/**
* Determines the referer taxonomy
*
* @return string|bool Either the name of the taxonomy to use or false if a referer taxonomy wasn't found
*/
protected function determine_taxonomy()
{
global $wp;
//Backup the server request variable
$bk_req = $_SERVER['REQUEST_URI'];
//Now set the request URL to the referrer URL
//Could just chain the [1] selection, but that's not PHP5.3 compatible
$url_split = explode(home_url(), esc_url(wp_get_referer()));
if(isset($url_split[1]))
{
$_SERVER['REQUEST_URI'] = $url_split[1];
}
else
{
return false;
}
//Create our own new instance of WP, and have it parse our faux request
$bcn_wp = new WP();
//Copy over the current global wp object's query_vars since CPTs and taxonomies are added directly to the global $wp
$bcn_wp->public_query_vars = $wp->public_query_vars;
$bcn_wp->parse_request();
$_SERVER['REQUEST_URI'] = $bk_req;
if(is_array($bcn_wp->query_vars))
{
foreach($bcn_wp->query_vars as $query_var => $value)
{
if($taxonomy = $this->query_var_to_taxonomy($query_var))
{
return $taxonomy;
}
}
}
return false;
}
/**
* This function selects the term that should be used for a post's hierarchy
*
* @param int $id The ID of the post to find the term for
* @param string $type The post type of the post to figure out the taxonomy for
* @param string $taxonomy The taxonomy to use
*
* @return WP_Term|bool The term object to use for the post hierarchy or false if no suitable term was found
*/
protected function pick_post_term($id, $type, $taxonomy)
{
//Fill a temporary object with the terms
$bcn_object = get_the_terms($id, $taxonomy);
$potential_parent = 0;
//Make sure we have an non-empty array
if(is_array($bcn_object))
{
//Now try to find the deepest term of those that we know of
$bcn_use_term = key($bcn_object);
foreach($bcn_object as $key => $object)
{
//Can't use the next($bcn_object) trick since order is unknown
if($object->parent > 0 && ($potential_parent === 0 || $object->parent === $potential_parent))
{
$bcn_use_term = $key;
$potential_parent = $object->term_id;
}
}
return $bcn_object[$bcn_use_term];
}
return false;
}
/**
* A Breadcrumb Trail Filling Function
*
* This function fills breadcrumbs for any post taxonomy
*
* @param int $id The id of the post to figure out the taxonomy for
* @param string $type The post type of the post to figure out the taxonomy for
* @param int $parent (optional) The id of the parent of the current post, used if hiearchal posts will be the "taxonomy" for the current post
*/
protected function post_hierarchy($id, $type, $parent = null)
{
//Check to see if breadcrumbs for the hierarchy of the post needs to be generated
if($this->opt['bpost_' . $type . '_hierarchy_display'])
{
//Check if we have a date 'taxonomy' request
if($this->opt['Epost_' . $type . '_hierarchy_type'] === 'BCN_DATE')
{
$post = get_post($id);
$this->do_day($post, $type, false, false);
$this->do_month($post, $type, false, false);
$this->do_year($post, $type, false, false);
}
//Handle the use of hierarchical posts as the 'taxonomy'
else if($this->opt['Epost_' . $type . '_hierarchy_type'] === 'BCN_POST_PARENT')
{
if($parent == null)
{
//We have to grab the post to find its parent, can't use $post for this one
$parent = get_post($id);
//TODO should we check that we have a WP_Post object here?
$parent = $parent->post_parent;
}
//Grab the frontpage, we'll need it shortly
$frontpage = get_option('page_on_front');
//If there is a parent page let's find it
if($parent > 0 && $id != $parent && $frontpage != $parent)
{
$parent = $this->post_parents($parent, $frontpage);
}
}
else
{
$taxonomy = $this->opt['Epost_' . $type . '_hierarchy_type'];
//Possibly let the referer influence the taxonomy used
if($this->opt['bpost_' . $type . '_taxonomy_referer'] && $referrer_taxonomy = $this->determine_taxonomy())
{
//See if there were any terms, if so, we can use the referrer influenced taxonomy
$terms = get_the_terms($id, $referrer_taxonomy);
if(is_array($terms))
{
$taxonomy = $referrer_taxonomy;
}
}
//Handle all hierarchical taxonomies, including categories
if(is_taxonomy_hierarchical($taxonomy))
{
//Filter the results of post_pick_term
$term = apply_filters('bcn_pick_post_term', $this->pick_post_term($id, $type, $taxonomy), $id, $type, $taxonomy);
//Only do something if we found a term
if($term instanceof WP_Term)
{
//Fill out the term hiearchy
$parent = $this->term_parents($term, $type);
}
}
//Handle the rest of the taxonomies, including tags
else
{
$this->post_terms($id, $taxonomy);
}
}
}
//If we never got a good parent for the type_archive, make it now
if(!($parent instanceof WP_Post))
{
$parent = get_post($id);
}
//Finish off with trying to find the type archive
$this->maybe_do_archive_by_post_type($parent->post_type);
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for the terms of a post
*
* @param int $id The id of the post to find the terms for
* @param string $taxonomy The name of the taxonomy that the term belongs to
*
* TODO Need to implement this cleaner
*/
protected function post_terms($id, $taxonomy)
{
//Apply a filter to the terms for the post referred to by ID
$bcn_terms = apply_filters('bcn_post_terms', get_the_terms($id, $taxonomy), $taxonomy, $id);
//Only process if we have terms
if(is_array($bcn_terms))
{
//For single terms, treat as if they are hierarchical
if(count($bcn_terms) === 1 && $bcn_terms[0] instanceof WP_Term)
{
return $this->term_parents($bcn_terms[0], get_post_type($id));
}
$title = '';
$is_first = true;
//Loop through all of the term results
foreach($bcn_terms as $term)
{
//Everything but the first term needs a comma separator
if($is_first == false)
{
$title .= ', ';
}
//This is a bit hackish, but it compiles the term anchor and appends it to the current breadcrumb title
$title .= str_replace(
array('%title%', '%link%', '%htitle%', '%type%'),
array($term->name, $this->maybe_add_post_type_arg(get_term_link($term), null, $term->taxonomy), $term->name, $term->taxonomy),
$this->opt['Htax_' . $term->taxonomy . '_template']);
$is_first = false;
}
//Place the breadcrumb in the trail, uses the constructor to set the title, template, and type, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb($title, '%htitle%', array('taxonomy', $taxonomy)));
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This recursive functions fills the trail with breadcrumbs for parent terms
*
* @param WP_Term $term The term object to generate breadcrumbs for
* @param string|null $type The post type string to use for determining whether or not to add the post type argument
*
* @return WP_Term|WP_Error The term we stopped at
*/
protected function term_parents($term, $type = null)
{
if($term instanceof WP_Term)
{
//Place the breadcrumb in the trail, uses the constructor to set the title, template, and type, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
$term->name, $this->opt['Htax_' . $term->taxonomy . '_template'],
array('taxonomy', $term->taxonomy),
$this->maybe_add_post_type_arg(get_term_link($term), $type, $term->taxonomy),
$term->term_id,
true));
//Make sure the id is valid, and that we won't end up spinning in a loop
if($term->parent && $term->parent != $term->term_id)
{
//Figure out the rest of the term hiearchy via recursion
$ret_term = $this->term_parents(get_term($term->parent, $term->taxonomy), $type);
//May end up with WP_Error, don't update the term if that's the case
if($ret_term instanceof WP_Term)
{
$term = $ret_term;
}
}
}
return $term;
}
/**
* A Breadcrumb Trail Filling Function
*
* This recursive functions fills the trail with breadcrumbs for parent posts/pages
*
* @param int $id The id of the parent page
* @param int $frontpage The id of the front page
*
* @return WP_Post The parent we stopped at
*/
protected function post_parents($id, $frontpage)
{
//Use WordPress API, though a bit heavier than the old method, this will ensure compatibility with other plug-ins
$parent = get_post($id);
//Only add the breadcrumb if it is non-private or we allow private posts in the breadcrumb trail
if(apply_filters('bcn_show_post_private', get_post_status($parent) !== 'private', $parent->ID))
{
//Place the breadcrumb in the trail, uses the constructor to set the title, template, and type, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
get_the_title($id),
$this->opt['Hpost_' . $parent->post_type . '_template'],
array('post', 'post-' . $parent->post_type),
get_permalink($id),
$id,
true));
}
//Make sure the id is valid, and that we won't end up spinning in a loop
if($parent->post_parent > 0 && $id != $parent->post_parent && $frontpage != $parent->post_parent)
{
//If valid, recursively call this function
$parent = $this->post_parents($parent->post_parent, $frontpage);
}
return $parent;
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for posts
*
* @param WP_Post $post Instance of WP_Post object to create a breadcrumb for
* @param bool $force_link Whether or not to force this breadcrumb to be linked
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
* @param bool $is_current_item Whether or not the breadcrumb being generated is the current item
*/
protected function do_post($post, $force_link = false, $is_paged = false, $is_current_item = true)
{
//If we did not get a WP_Post object, warn developer and return early
if(!($post instanceof WP_Post))
{
_doing_it_wrong(__CLASS__ . '::' . __FUNCTION__, __('$post global is not of type WP_Post', 'breadcrumb-navxt'), '5.1.1');
return;
}
//If this is the current item or if we're allowing private posts in the trail add a breadcrumb
if($is_current_item || apply_filters('bcn_show_post_private', get_post_status($post) !== 'private', $post->ID))
{
//Place the breadcrumb in the trail, uses the bcn_breadcrumb constructor to set the title, template, and type
$breadcrumb = $this->add(new bcn_breadcrumb(
get_the_title($post),
$this->opt['Hpost_' . $post->post_type . '_template_no_anchor'],
array('post', 'post-' . $post->post_type),
get_permalink($post),
$post->ID));
if($is_current_item)
{
$breadcrumb->add_type('current-item');
}
//Under a couple of circumstances we will want to link this breadcrumb
if($force_link || ($is_current_item && $this->opt['bcurrent_item_linked']) || ($is_paged && $this->opt['bpaged_display']))
{
//Change the template over to the normal, linked one
$breadcrumb->set_template($this->opt['Hpost_' . $post->post_type . '_template']);
//Add the link
$breadcrumb->set_linked(true);
}
}
//Done with the current item, now on to the parents
$frontpage = get_option('page_on_front');
//If we are to follow the hierarchy first (with hierarchy type backup), run through the post again
if($this->opt['bpost_' . $post->post_type. '_hierarchy_parent_first'] && $post->post_parent > 0 && $post->ID != $post->post_parent && $frontpage != $post->post_parent)
{
//Get the parent's information
$parent = get_post($post->post_parent);
//Take care of the parent's breadcrumb
$this->do_post($parent, true, false, false);
}
//Otherwise we need the follow the hiearchy tree
else
{
//Handle the post's hiearchy
$this->post_hierarchy($post->ID, $post->post_type, $post->post_parent);
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This function fills a breadcrumb for any taxonomy archive, was previously two separate functions
*
* @param WP_Term $term The term object to generate the breadcrumb for
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
*/
protected function do_archive_by_term($term, $is_paged = false)
{
if(!($term instanceof WP_Term))
{
_doing_it_wrong(__CLASS__ . '::' . __FUNCTION__, __('$term global is not of type WP_Term', 'breadcrumb-navxt'), '7.0.3');
return;
}
//Place the breadcrumb in the trail, uses the constructor to set the title, template, and type, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
$term->name,
$this->opt['Htax_' . $term->taxonomy . '_template_no_anchor'],
array('archive', 'taxonomy', $term->taxonomy, 'current-item'),
$this->maybe_add_post_type_arg(get_term_link($term), null, $term->taxonomy),
$term->term_id));
//If we're paged, let's link to the first page
if($this->opt['bcurrent_item_linked'] || ($is_paged && $this->opt['bpaged_display']))
{
$breadcrumb->set_template($this->opt['Htax_' . $term->taxonomy . '_template']);
//Figure out the anchor for current category
$breadcrumb->set_linked(true);
}
//Get parents of current term
if($term->parent)
{
$this->term_parents(get_term($term->parent, $term->taxonomy));
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for day date archives
*
* @param WP_Post $post Instance of WP_Post object to create a breadcrumb for
* @param string $type The name of the CPT to generate the archive breadcrumb for
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
* @param bool $is_current_item Whether or not the breadcrumb being generated is the current item
*/
protected function do_day($post, $type, $is_paged = false, $is_current_item = true)
{
//Place the breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
get_the_time(_x('d', 'day archive breadcrumb date format', 'breadcrumb-navxt'), $post),
$this->opt['Hdate_template_no_anchor'],
array('archive', 'date-day'),
$this->maybe_add_post_type_arg(get_day_link(get_the_time('Y'), get_the_time('m'), get_the_time('d')), $type)));
//If this is a day archive, add current-item type
if($is_current_item)
{
$breadcrumb->add_type('current-item');
}
//If we're paged, let's link to the first page
if(!$is_current_item || ($is_current_item && $this->opt['bcurrent_item_linked']) || ($is_paged && $this->opt['bpaged_display']))
{
//We're linking, so set the linked template
$breadcrumb->set_template($this->opt['Hdate_template']);
//Deal with the anchor
$breadcrumb->set_linked(true);
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for month date archives
*
* @param WP_Post $post Instance of WP_Post object to create a breadcrumb for
* @param string $type The name of the CPT to generate the archive breadcrumb for
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
* @param bool $is_current_item Whether or not the breadcrumb being generated is the current item
*/
protected function do_month($post, $type, $is_paged = false, $is_current_item = true)
{
//Place the breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
get_the_time(_x('F', 'month archive breadcrumb date format', 'breadcrumb-navxt'), $post),
$this->opt['Hdate_template_no_anchor'],
array('archive', 'date-month'),
$this->maybe_add_post_type_arg(get_month_link(get_the_time('Y'), get_the_time('m')), $type)));
//If this is a month archive, add current-item type
if($is_current_item)
{
$breadcrumb->add_type('current-item');
}
//If we're paged, or not in the archive by month let's link to the first archive by month page
if(!$is_current_item || ($is_current_item && $this->opt['bcurrent_item_linked']) || ($is_paged && $this->opt['bpaged_display']))
{
//We're linking, so set the linked template
$breadcrumb->set_template($this->opt['Hdate_template']);
//Deal with the anchor
$breadcrumb->set_linked(true);
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for year date archives
*
* @param WP_Post $post Instance of WP_Post object to create a breadcrumb for
* @param string $type The name of the CPT to generate the archive breadcrumb for
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
* @param bool $is_current_item Whether or not the breadcrumb being generated is the current item
*/
protected function do_year($post, $type, $is_paged = false, $is_current_item = true)
{
//Place the year breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
get_the_time(_x('Y', 'year archive breadcrumb date format', 'breadcrumb-navxt'), $post),
$this->opt['Hdate_template_no_anchor'],
array('archive', 'date-year'),
$this->maybe_add_post_type_arg(get_year_link(get_the_time('Y')), $type)));
//If this is a year archive, add current-item type
if($is_current_item)
{
$breadcrumb->add_type('current-item');
}
//If we're paged, or not in the archive by year let's link to the first archive by year page
if(!$is_current_item || ($is_current_item && $this->opt['bcurrent_item_linked']) || ($is_paged && $this->opt['bpaged_display']))
{
//We're linking, so set the linked template
$breadcrumb->set_template($this->opt['Hdate_template']);
$breadcrumb->set_linked(true);
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for the front page
*
* @param bool $force_link Whether or not to force this breadcrumb to be linked
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
* @param bool $is_current_item Whether or not the breadcrumb being generated is the current item
*/
protected function do_home($force_link = false, $is_paged = false, $is_current_item = true)
{
global $current_site;
//Exit early if we're not displaying the home breadcrumb
if(!$this->opt['bhome_display'])
{
return;
}
//Get the site name
$site_name = get_option('blogname');
//Place the breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb($site_name, $this->opt['Hhome_template_no_anchor'], array('home'), get_home_url()));
if($is_current_item)
{
$breadcrumb->add_type('current-item');
}
//Under a couple of circumstances we will want to link this breadcrumb
if($force_link || ($is_current_item && $this->opt['bcurrent_item_linked']) || ($is_paged && $this->opt['bpaged_display']))
{
$breadcrumb->set_template($this->opt['Hhome_template']);
$breadcrumb->set_linked(true);
}
//If we have a multi site and are not on the main site we may need to add a breadcrumb for the main site
if($this->opt['bmainsite_display'] && !is_main_site())
{
//Get the site name
$site_name = get_site_option('site_name');
//Place the main site breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb($site_name, $this->opt['Hmainsite_template'], array('main-home'), get_home_url($current_site->blog_id), null, true));
}
}
/**
* A modified version of WordPress' function of the same name
*
* @param object $object the post or taxonomy object used to attempt to find the title
*
* @return string the title
*/
protected function post_type_archive_title($object)
{
if(isset($object->labels->name))
{
//Core filter use here is ok for time being
//TODO: Recheck validitiy prior to each release
return apply_filters('post_type_archive_title', $object->labels->name, $object->name);
}
}
/**
* Determines if a post type is a built in type or not
*
* @param string $post_type the name of the post type
*
* @return bool
*/
protected function is_builtin($post_type)
{
$type = get_post_type_object($post_type);
//If we get a null, that means either then type wasn't found, or we had 'any' as a type, treat as builtin
if($type === null)
{
return true;
}
else
{
return $type->_builtin;
}
}
/**
* Determines if the current location is a for a root page or not
*
* @param string $post_type the name of the post type
* @return bool
*
* TODO: Remove dependancies to current state (state should be passed in)
*/
protected function treat_as_root_page($post_type)
{
return (is_home() || (is_post_type_archive() && !$this->opt['bpost_' . $post_type . '_archive_display']));
}
/**
* Determines if a post type has archives enabled or not
*
* @param string $post_type the name of the post type
*
* @return bool
*/
protected function has_archive($post_type)
{
$type = get_post_type_object($post_type); //TODO need a check on this for WP_Error?
return $type->has_archive;
}
/**
* Retrieves the query var for 'post_type', sets default to post, and escapes
*
* @param string $default[optional] The default value to return if nothing was found/set or if post_type was an array
*
* @return string The post type string found in the post_type query var
*/
protected function get_type_string_query_var($default = 'post')
{
$type_str = get_query_var('post_type', $default);
if($type_str === '' || is_array($type_str))
{
//If we didn't get a type, or it was an array, try the the first post
$post = get_post();
if($post instanceof WP_Post)
{
$type_str = $post->post_type;
}
else
{
$type_str = $default;
}
}
return esc_attr($type_str);
}
/**
* Retrieves the query var for 'post_type', and returns whether or not it is an array
*
* @return bool Whether or not the post_type query var is an array
*/
protected function is_type_query_var_array()
{
return is_array(get_query_var('post_type'));
}
/**
* Adds the post type argument to the URL iff the passed in type is not post
*
* @param string $url The URL to possibly add the post_type argument to
* @param string $type[optional] The type to possibly add to the URL
* @param string $taxonomy[optional] If we're dealing with a taxonomy term, the taxonomy of that term
*
* @return string The possibly modified URL
*/
protected function maybe_add_post_type_arg($url, $type = null, $taxonomy = null)
{
global $wp_taxonomies;
//Rather than default to post, we should try to find the type
if($type == null)
{
$type = $this->get_type_string_query_var();
}
$add_query_arg = false;
//Add a query arg if we are not on the default post type for the archive in question and the post type is not post
if($type !== 'post' && !($taxonomy
&& isset($wp_taxonomies[$taxonomy]->object_type[0])
&& $type === $wp_taxonomies[$taxonomy]->object_type[0]))
{
$add_query_arg = true;
}
//Filter the add_query_arg logic, only add the query arg if necessary
if(apply_filters('bcn_add_post_type_arg', $add_query_arg, $type, $taxonomy))
{
$url = add_query_arg(array('post_type' => $type), $url);
}
return $url;
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for a post type archive (WP 3.1 feature)
* @param string type_str The name of the CPT to generate the archive breadcrumb for
* @param bool $force_link Whether or not to force this breadcrumb to be linked
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
* @param bool $is_current_item Whether or not the breadcrumb being generated is the current item
*/
protected function do_archive_by_post_type($type_str, $force_link = false, $is_paged = false, $is_current_item = true)
{
//Place the breadcrumb in the trail, uses the constructor to set the title, prefix, and suffix, get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
$this->post_type_archive_title(get_post_type_object($type_str)),
$this->opt['Hpost_' . $type_str . '_template_no_anchor'],
array('archive', 'post-' . $type_str . '-archive'),
get_post_type_archive_link($type_str)));
if($is_current_item)
{
$breadcrumb->add_type('current-item');
}
//Under a couple of circumstances we will want to link this breadcrumb
if($force_link || ($is_current_item && $this->opt['bcurrent_item_linked']) || ($is_paged && $this->opt['bpaged_display']))
{
//Change the template over to the normal, linked one
$breadcrumb->set_template($this->opt['Hpost_' . $type_str. '_template']);
//Add the link
$breadcrumb->set_linked(true);
}
}
/**
* A wrapper function for do_archive_by_post_type which checks to ensure generating the post type archive is appropriate
*
* @param string $type_str The type string for the post type archive
*/
protected function maybe_do_archive_by_post_type($type_str)
{
//If this is a custom post type with a post type archive, add it
if(!$this->is_builtin($type_str) && $this->opt['bpost_' . $type_str . '_archive_display'] && $this->has_archive($type_str))
{
//Going farther down the rabbit hole here
$this->do_archive_by_post_type($type_str, true, false, false);
}
}
/**
* A Breadcrumb Trail Filling Function
*
* Deals with the post type archive and taxonomy archives
*
* @param WP_Post|WP_Taxonomy $type The post or taxonomy to generate the archive breadcrumb for
* @param string $type_str The type string for the archive
*/
protected function type_archive($type, $type_str = false)
{
//Not at taxonomy, and didn't get a type string, see if we can get the info from the query var
if(!isset($type->taxonomy) && $type_str === false) //TODO could probably check the class type here
{
$type_str = $this->get_type_string_query_var();
}
//Have a taxonomy, try to figure the type out from that
else if(isset($type->taxonomy) && isset($GLOBALS['wp_taxonomies'][$type->taxonomy]->object_type[0])
&& !$this->is_type_query_var_array()
&& apply_filters('bcn_show_type_term_archive', true, $type->taxonomy))
{
$type_str = apply_filters('bcn_type_archive_post_type', $this->get_type_string_query_var($GLOBALS['wp_taxonomies'][$type->taxonomy]->object_type[0]));
}
$this->maybe_do_archive_by_post_type($type_str);
return $type_str;
}
/**
* A Breadcrumb Trail Filling Function
*
* Handles only the root page stuff for post types, including the "page for posts"
*
* @param string $type_str The type string variable
* @param int $root_id The ID for the post type root
* @param bool $is_paged Whether or not the current resource is on a page other than page 1
* @param bool $is_current_item Whether or not the breadcrumb being generated is the current item
*/
protected function do_root($type_str, $root_id, $is_paged = false, $is_current_item = true)
{
//Nothing to do for the page post type, exit early
if($type_str === 'page')
{
return;
}
$frontpage_id = get_option('page_on_front');
//Retrieve the post for the root_id as we will need it eventually
$bcn_post = get_post($root_id);
//We'll have to check if this ID is valid, e.g. user has specified a posts page
if($bcn_post instanceof WP_Post && $root_id > 0 && $root_id != $frontpage_id)
{
//Place the breadcrumb in the trail, uses the constructor to set the title, template, and type, we get a pointer to it in return
$breadcrumb = $this->add(new bcn_breadcrumb(
get_the_title($root_id),
$this->opt['Hpost_' . $type_str . '_template_no_anchor'],
array($type_str . '-root', 'post', 'post-' . $type_str),
get_permalink($root_id),
$root_id));
//If we are at home, or any root page archive then we need to add the current item type
if($is_current_item)
{
$breadcrumb->add_type('current-item');
}
//If we're not on the current item we need to setup the anchor
if(!$is_current_item || ($is_current_item && $this->opt['bcurrent_item_linked']) || ($is_paged && $this->opt['bpaged_display']))
{
$breadcrumb->set_template($this->opt['Hpost_' . $type_str . '_template']);
$breadcrumb->set_linked(true);
}
//Done with the "root", now on to the parents
//If there is a parent post let's find it
if($bcn_post->post_parent > 0 && $bcn_post->ID != $bcn_post->post_parent && $frontpage_id != $bcn_post->post_parent)
{
$this->post_parents($bcn_post->post_parent, $frontpage_id);
}
}
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for 404 pages.
*/
protected function do_404()
{
//Place the breadcrumb in the trail, uses the bcn_breadcrumb constructor to set the title, prefix, and suffix
$this->breadcrumbs[] = new bcn_breadcrumb($this->opt['S404_title'], $this->opt['H404_template'], array('404', 'current-item'));
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for paged pages
*
* @param int $page_number The page number to create a breadcrumb for
*/
protected function do_paged($page_number)
{
//Place the breadcrumb in the trail, uses the bcn_breadcrumb constructor to set the title, prefix, and suffix
$this->breadcrumbs[] = new bcn_breadcrumb((string) $page_number, $this->opt['Hpaged_template'], array('paged'));
}
/**
* Breadcrumb Trail Filling Function
*
* @param bool $force Whether or not to force the fill function to run in the loop.
*
* This functions fills the breadcrumb trail.
*/
public function fill($force = false)
{
global $wpdb, $wp_query, $wp, $wp_taxonomies;
//Check to see if the trail is already populated
if(count($this->breadcrumbs) > 0)
{
//Exit early since we have breadcrumbs in the trail
return null;
}
if($this->opt['bblog_display'])
{
$this->opt['apost_post_root'] = get_option('page_for_posts');
}
else
{
$this->opt['apost_post_root'] = false;
}
//Do any actions if necessary, we past through the current object instance to keep life simple
do_action('bcn_before_fill', $this);
$type = $wp_query->get_queried_object();
//Do specific opperations for the various page types
//Check if this isn't the first of a multi paged item
if($this->opt['bpaged_display'] && (is_paged() || is_singular() && get_query_var('page') > 1))
{
//Need to switch between paged and page for archives and singular (posts)
if(get_query_var('paged') > 0)
{
//Can use simple type hinting here to int since we already checked for greater than 0
$page_number = (int) abs(get_query_var('paged'));
}
else
{
$page_number = (int) abs(get_query_var('page'));
}
$this->do_paged($page_number);
}
//For the front page, as it may also validate as a page, do it first
if(is_front_page() && !$force && !in_the_loop())
{
//Must have two seperate branches so that we don't evaluate it as a page
if($this->opt['bhome_display'])
{
$this->do_home(false, is_paged());
}
}
//For posts
else if(is_singular() || ($force && in_the_loop()))
{
//Could use the $post global, but we can't really trust it
$type = get_post();
$this->do_post($type, false, (get_query_var('page') > 1));
//If this is an attachment then we need to change the queried object to the parent post
if(is_attachment())
{
$type = get_post($type->post_parent); //TODO check for WP_Error?
}
if($type instanceof WP_Post)
{
$this->do_root($type->post_type, $this->opt['apost_' . $type->post_type . '_root'], is_paged(), false);
}
}
//For searches
else if(is_search())
{
$this->do_search(get_search_query(), is_paged());
}
//For author pages
else if(is_author() && $type instanceof WP_User)
{
$this->do_author($type, is_paged());
$this->do_root('post', $this->opt['aauthor_root'], is_paged(), false);
}
//For archives
else if(is_archive())
{
//We need the type for later, so save it
$type_str = get_query_var('post_type');
//May be an array, if so, rewind the iterator and grab first item
if(is_array($type_str))
{
$type_str = reset($type_str);
}
//For date based archives
if(is_date())
{
$type_str = $this->get_type_string_query_var();
//First deal with the day breadcrumb
if(is_day())
{
$this->do_day(get_post(), $type_str, is_paged(), true);
}
//Now deal with the month breadcrumb
if(is_month() || is_day())
{
$this->do_month(get_post(), $type_str, is_paged(), is_month());
}
$this->do_year(get_post(), $type_str, is_paged(), is_year());
$this->maybe_do_archive_by_post_type($type_str);
}
//If we have a post type archive, and it does not have a root page generate the archive
else if(is_post_type_archive() && !isset($type->taxonomy)
&& (!is_numeric($this->opt['apost_' . $type_str . '_root']) || $this->opt['bpost_' . $type_str . '_archive_display']))
{
$this->do_archive_by_post_type($this->get_type_string_query_var(), false, is_paged(), true);
}
//For taxonomy based archives
else if((is_category() || is_tag() || is_tax()) && $type instanceof WP_Term)
{
$this->do_archive_by_term($type, is_paged());
$type_str = $this->type_archive($type);
}
else
{
$this->type_archive($type);
}
//Occasionally, we may end up with garbage for the type string, if so, skip the root
if(isset($this->opt['apost_' . $type_str . '_root']))
{
$this->do_root($type_str, $this->opt['apost_' . $type_str . '_root'], is_paged(), $this->treat_as_root_page($type_str));
}
}
//For 404 pages
else if(is_404())
{
$this->do_404();
}
else
{
//If it looks, walks, and quacks like a taxonomy, treat is as one
if(isset($type->taxonomy))
{
$this->do_archive_by_term($type, is_paged());
$type_str = $this->type_archive($type);
}
//Otherwise, it's likely the blog page
else if($this->opt['bblog_display'] || is_home())
{
$type_str = 'post';
}
if(isset($type_str) && isset($this->opt['apost_' . $type_str . '_root']))
{
$this->do_root($type_str, $this->opt['apost_' . $type_str . '_root'], is_paged(), $this->treat_as_root_page($type_str));
}
}
//We always do the home link last, unless on the frontpage
if(!is_front_page())
{
$this->do_home(true, false, false);
}
//Do any actions if necessary, we past through the current object instance to keep life simple
do_action('bcn_after_fill', $this);
}
public function fill_REST($item)
{
if($item instanceof WP_Error || $item === null)
{
return;
}
//Handle Posts
if($item instanceof WP_Post)
{
$this->do_post($item, false);
$this->do_root($item->post_type, $this->opt['apost_' . $item->post_type . '_root'], false, false);
}
//Handle Terms
else if($item instanceof WP_Term)
{
$this->do_archive_by_term($item);
$type_str = $this->type_archive($item);
$this->do_root($type_str, $this->opt['apost_' . $type_str . '_root'], is_paged(), $this->treat_as_root_page($type_str));
}
//Handle Author Archives
else if($item instanceof WP_User)
{
$this->do_author($item);
$this->do_root('post', $this->opt['aauthor_root'], false, false);
}
$this->do_home(true, false, false);
}
/**
* This function will either set the order of the trail to reverse key
* order, or make sure it is forward key ordered.
*
* @param bool $reverse[optional] Whether to reverse the trail or not.
*/
protected function order($reverse = false)
{
if($reverse)
{
//Since there may be multiple calls our trail may be in a non-standard order
ksort($this->breadcrumbs);
}
else
{
//For normal opperation we must reverse the array by key
krsort($this->breadcrumbs);
}
}
/**
* This functions outputs or returns the breadcrumb trail in string form.
*
* @param bool $linked[optional] Whether to allow hyperlinks in the trail or not.
* @param bool $reverse[optional] Whether to reverse the output or not.
* @param string $template The template to use for the string output.
* @param string $outer_template The template to place an entire dimension of the trail into for all dimensions higher than 1.
*
* @return void Void if Option to print out breadcrumb trail was chosen.
* @return string String-Data of breadcrumb trail.
*/
public function display($linked = true, $reverse = false, $template = '%1$s%2$s', $outer_template = '<span>%1$s</span>%2$s')
{
//Set trail order based on reverse flag
$this->order($reverse);
//The main compiling loop
$trail_str = $this->display_loop($this->breadcrumbs, $linked, $reverse, $template, $outer_template, $this->opt['hseparator']);
return $trail_str;
}
/**
* This function assembles the breadcrumbs in the breadcrumb trail in accordance with the passed in template
*
* @param array $breadcrumbs Array containing bcn_breadcrumb objects to render
* @param bool $linked Whether to allow hyperlinks in the trail or not.
* @param bool $reverse Whether to reverse the output or not.
* @param string $template The template to use for the string output of each breadcrumb. Also known as the inner template.
* @param string $outer_template The template to place an entire dimension of the trail into for all dimensions higher than 1.
* @param string $separator The separator to use at this level of the breadcrumb trail
* @param int $depth The iteration depth
*
* @return string Compiled string version of breadcrumb trail ready for display.
*/
protected function display_loop($breadcrumbs, $linked, $reverse, $template, $outer_template, $separator, $depth = 1)
{
$position = 1;
$breadcrumbs = apply_filters('bcn_before_loop', $breadcrumbs);
$last_position = count($breadcrumbs);
if($reverse)
{
$position = $last_position;
}
//Initilize the string which will hold the assembled trail
$trail_str = '';
foreach($breadcrumbs as $key => $breadcrumb)
{
//Blank the separator if we are dealing with what is the last breadcrumb in the assembled trail
if((!$reverse && ($position >= $last_position)) || ($reverse && $position == 1))
{
$separator = '';
}
if(is_array($breadcrumb))
{
$trail_str .= sprintf($outer_template,
$this->display_loop($breadcrumb, $linked, $reverse, $template, $outer_template, $this->opt['hseparator_higher_dim'], $depth + 1), $separator);
}
else if($breadcrumb instanceof bcn_breadcrumb)
{
$types = $breadcrumb->get_types();
array_walk($types, 'sanitize_html_class');
$attrib_array = array('class' => $types);
$attribs = '';
//Allow others to hook into the attribute array
$attrib_array = apply_filters('bcn_display_attribute_array', $attrib_array, $breadcrumb->get_types(), $breadcrumb->get_id());
//Stringify the array
foreach($attrib_array as $attrib => $value)
{
$attribs .= sprintf(' %1$s="%2$s"', esc_attr($attrib), esc_attr(implode(' ', $value)));
}
//Filter li_attributes adding attributes to the li element
//TODO: Remove the bcn_li_attributes filter
$attribs = apply_filters_deprecated('bcn_li_attributes', array($attribs, $breadcrumb->get_types(), $breadcrumb->get_id()), '6.0.0', 'bcn_display_attributes');
//TODO: Deprecate this filter in favor of just using bcn_display_attributes_array
$attribs = apply_filters('bcn_display_attributes', $attribs, $breadcrumb->get_types(), $breadcrumb->get_id());
$separator = apply_filters('bcn_display_separator', $separator, $position, $last_position, $depth);
//Assemble the breadcrumb
$trail_str .= sprintf($template, $breadcrumb->assemble($linked, $position, ($key === 0)), $separator, $attribs);
}
if($reverse)
{
$position--;
}
else
{
$position++;
}
}
return $trail_str;
}
/**
* This functions outputs or returns the breadcrumb trail in Schema.org BreadcrumbList compliant JSON-LD
*
* @param bool $reverse[optional] Whether to reverse the output or not.
*
* @return void Void if option to print out breadcrumb trail was chosen.
* @return object basic object version of the breadcrumb trail ready for json_encode.
*/
public function display_json_ld($reverse = false)
{
//Set trail order based on reverse flag
$this->order($reverse);
$trail_str = (object)array(
'@context' => 'http://schema.org',
'@type' => 'BreadcrumbList',
'itemListElement' => $this->json_ld_loop($reverse));
return $trail_str;
}
/**
* This function assembles all of the breadcrumbs into an object ready for json_encode
*
* @param bool $reverse[optional] Whether to reverse the output or not.
* @return array The array of breadcrumbs prepared for JSON-LD
*/
protected function json_ld_loop($reverse = false)
{
$position = 1;
if($reverse)
{
$position = count($this->breadcrumbs);
}
$breadcrumbs = array();
//Loop around our breadcrumbs, call the JSON-LD assembler
foreach($this->breadcrumbs as $breadcrumb)
{
$breadcrumbs[] = $breadcrumb->assemble_json_ld($position);
if($reverse)
{
$position--;
}
else
{
$position++;
}
}
return $breadcrumbs;
}
/**
* Deprecated functions, don't use these
*/
/**
* This returns the internal version
*
* @deprecated 5.2.0 No longer needed, superceeded bcn_breadcrumb_trail::version
*
* @return string internal version of the Breadcrumb trail
*/
public function get_version()
{
_deprecated_function( __FUNCTION__, '5.2', 'bcn_breadcrumb_trail::version' );
return self::version;
}
/**
* A Breadcrumb Trail Filling Function
*
* @deprecated 6.0.0 No longer needed, superceeded by do_post
*
* This functions fills a breadcrumb for an attachment page.
*/
protected function do_attachment()
{
_deprecated_function( __FUNCTION__, '6.0', 'bcn_breadcrumb_trail::do_post');
$this->do_post(get_post());
}
/**
* A Breadcrumb Trail Filling Function
*
* This functions fills a breadcrumb for a date archive.
*
* @param string $type The type to restrict the date archives to
*
* @deprecated 6.0.0 No longer needed, superceeded by do_day, do_month, and/or do_year
*/
protected function do_archive_by_date($type)
{
_deprecated_function( __FUNCTION__, '6.0', 'bcn_breadcrumb_trail::do_day, bcn_breadcrumb_trail::do_month, and/or bcn_breadcrumb_trail::do_year');
//First deal with the day breadcrumb
if(is_day() || is_single())
{
$this->do_day(get_post(), $type, is_paged(), is_day());
}
//Now deal with the month breadcrumb
if(is_month() || is_day() || is_single())
{
$this->do_month(get_post(), $type, is_paged(), is_month());
}
$this->do_year(get_post(), $type, is_paged(), is_year());
}
/**
* This functions outputs or returns the breadcrumb trail in list form.
*
* @deprecated 6.0.0 No longer needed, superceeded by $template parameter in display
*
* @param bool $linked[optional] Whether to allow hyperlinks in the trail or not.
* @param bool $reverse[optional] Whether to reverse the output or not.
*
* @return void Void if option to print out breadcrumb trail was chosen.
* @return string String version of the breadcrumb trail.
*/
public function display_list($linked = true, $reverse = false)
{
_deprecated_function( __FUNCTION__, '6.0', 'bcn_breadcrumb_trail::display');
return $this->display($linked, $reverse, "<li%3\$s>%1\$s</li>\n");
}
}