=== Breadcrumb NavXT ===
Contributors: mtekk, hakre
Donate link: https://www.paypal.com/cgi-bin/webscr?cmd=_donations&business=FD5XEU783BR8U&lc=US&item_name=Breadcrumb%20NavXT%20Donation&currency_code=USD&bn=PP%2dDonationsBF%3abtn_donateCC_LG%2egif%3aNonHosted
Tags: breadcrumb, breadcrumbs, trail, navigation, menu, widget
Requires at least: 4.7
Tested up to: 4.9.8
Stable tag: 6.2.0
Requires PHP: 5.3
License: GPLv2 or later
Adds breadcrumb navigation showing the visitor's path to their current location.

== Description ==

Breadcrumb NavXT, the successor to the popular WordPress plugin Breadcrumb Navigation XT, was written from the ground up to be better than its ancestor. This plugin generates locational breadcrumb trails for your WordPress powered blog or website. These breadcrumb trails are highly customizable to suit the needs of just about any website running WordPress. The Administrative interface makes setting options easy, while a direct class access is available for theme developers and more adventurous users.

= PHP Requirements =
Breadcrumb NavXT 5.2 and newer require PHP5.3
Breadcrumb NavXT 5.1.1 and older require PHP5.2

= Features (non-exhaustive) =
* RDFa format Schema.org BreadcrumbList compatible breadcrumb generation.
* Extensive breadcrumb customization control via a settings page with appropriate default values for most use cases.
* Network admin settings page for managing breadcrumb settings for all subsites with [configurable global priority](http://mtekk.us/archives/guides/controlling-breadcrumb-navxt-settings-from-the-network-settings-page/ "Go to the article on configuring the network settings priority.").
* Built in WordPress Widget.
* Extensible via OOP and provided [actions](http://mtekk.us/code/breadcrumb-navxt/breadcrumb-navxt-doc/2/#action_reference "Go to the Breadcrumb NavXT Documentation's action reference.") and [filters](http://mtekk.us/code/breadcrumb-navxt/breadcrumb-navxt-doc/2/#filter_reference "Go to the Breadcrumb NavXT Documentation's filter reference.").
* WPML compatible (enhanced compatibility with WPML extensions plugin).
* Polylang compatible (enhanced compatibility with Polylang extensions plugin).
* bbPress compatible (enhanced compatibility with bbPress extensions plugin).
* BuddyPress compatible (enhanced compatibility with BuddyPress extensions plugin).

= Translations =

Breadcrumb NavXT now supports WordPress.org language packs. Want to translate Breadcrumb NavXT? Visit [Breadcrumb NavXT's WordPress.org translation project](https://translate.wordpress.org/projects/wp-plugins/breadcrumb-navxt/).

== Installation ==
Breadcrumb NavXT can be installed from within WordPress’ administration panel. After installing and activating the plugin, to get breadcrumb trails to display either use the included widget, or call the breadcrumb trail in your theme (or child theme). See the [Calling the Breadcrumb Trail](http://mtekk.us/archives/guides/calling-the-breadcrumb-trail "Read more on calling the breadcrumb trail") article for more information on calling the breadcrumb trail.

To customize the breadcrumb trail you may edit the default values for the options in the administrative interface. This is located in your administration panel under Settings > Breadcrumb NavXT.

Please visit [Breadcrumb NavXT's Documentation](http://mtekk.us/code/breadcrumb-navxt/breadcrumb-navxt-doc/ "Go to Breadcrumb NavXT's Documentation.") page for more information.

== Screenshots ==
1. This screenshot shows 5 different examples of breadcrumbs generated by Breadcrumb NavXT
2. A screenshot of the General tab of the settings page
3. A screenshot of the Post Types tab of the settings page
4. A screenshot of the Taxonomies tab of the settings page
5. A screenshot of the Miscellaneous tab of the settings page
6. A screenshot of the Settings Import/Export/Reset form under the Help menu

== Changelog ==

= 6.2.0 =
Release date: September, 24th 2018

* Behavior change: Cleaned up translations for default templates, simplifying and clarifying the translatable content.
* Behavior change: Default unlinked breadcrumb templates no longer contain Schema.org BreadcrumbList markup.
* Behavior change: Breadcrumb NavXT REST API endpoints are no longer enabled by default.
* New feature: Added `bcn_register_rest_endpoint` filter.
* New feature: Added `bcn_breadcrumb_assemble_json_ld_array` filter.
* New feature: Added support for following the post parent hierarchy first then falling back to a secondary hierarchy.
* Bug fix: Fixed issue where on loading the settings page immediately after migrating settings causes PHP warnings on CPT and custom taxonomy settings.
* Bug fix: Fixed issue that caused the settings reset option under the help drop down to not work.

= 6.1.0 =
Release date: June, 1st 2018

* Behavior change: Links to generate support requests migrated to the WordPress.org forums.
* New feature: Added support for Schema.org BreadcrumbList (microdata format) in the included widget.
* New feature: Added new Root Page support for author archives.
* New feature: Added REST API endpoint for posts, terms, and author archives.
* Bug fix: Corrected label for the Schema.org BreadcrumbList (RDFa format) option in the included widget.
* Bug fix: Fixed issue where a PHP warning would be thrown due to `get_term()` returning something other than an instance of `WP_Term`.

= 6.0.4 =
Release date: January, 26th 2018

* Behavior change: Added auto migration of post type hierarchy settings to `bcn_display*()` functions.
* Bug fix: Fixed issue where a PHP notice would be generated on the page for posts when the blog breadcrumb display option is set to false.
* Bug fix: Fixed issue where a PHP notice would be generated on archive pages where attachments were included in the `wp_query` results.

= 6.0.3 =
Release date: January, 1st 2018

* Bug fix: Fixed issue where an improper breadcrumb would be generated in the trail for pages under some circumstances.
* Bug fix: Fixed issue where the post and page roots were not updating to track user changes in Settings > Reading.

= 6.0.2 =
Release date: December, 30th 2017

* Behavior change: Added warning alerting that `bcn_breadcrumb::type` must be an array.
* Bug fix: Changed Breadcrumb Separator and Paged Template from an input field to a textbox to reduce confusion caused by HTML entities.
* Bug fix: Fixed issue where the parents of a page may not show up in the breadcrumb trail.
* Bug fix: Fixed issue where the `$reverse` parameter for `bcn_display` and `bcn_display_list` did not work properly.
* Bug fix: Fixed issue where the `bcn_display_list` function did not include the `li` elements.

= 6.0.1 =
Release date: December, 28th 2017

* Behavior change: Removed unused Blog Template and Blog Template (Unlinked) from settings page.
* Bug fix: Fixed issue where changes to the hierarchy type for any post type would not save.
* Bug fix: Fixed issue where the blog display setting was ignored.

= 6.0.0 =
Release date: December, 26th 2017

* Behavior change: `bcn_breadcrumb_trail::display_list()` deprecated in favor of using the `$template` parameter in `bcn_breadcrumb_trail::display()`.
* Behavior change: `bcn_breadcrumb_trail::do_attachment()` deprecated in favor of calling `bcn_breadcrumb_trail::do_post()`.
* Behavior change: `bcn_breadcrumb_trail::do_front_page()` deprecated in favor of calling `bcn_breadcrumb_trail::do_home()`.
* Behavior change: `bcn_li_attributes` filter was deprecated in favor of `bcn_display_attributes`.
* Behavior change: `bcn_breadcrumb_trail::do_archive_by_date()` deprecated in favor of calling bcn_breadcrumb_trail::do_day()`, `bcn_breadcrumb_trail::do_month()`, and/or `bcn_breadcrumb_trail::do_year()`.
* Behavior change: `bcn_breadcrumb_trail::find_type()` deprecated and removed from bcn_breadcrumb_trail.
* Behavior change: Breadcrumb for 404 error pages changed to be a child of the front page.
* New feature: Added support for various HTML tags in the widget's pretext field.
* New feature: Added `bcn_default_hierarchy_display` filter.
* New feature: Added `bcn_default_hierarchy_type` filter.
* New feature: Added `$posttype_name` as the third parameter to `bcn_show_tax_private`.
* Bug fix: Fixed UI/UX issue in the settings screen where enabling/disabling settings groups for the Home, Blog, and Mainsite breadcrumb settings did not work.
* Bug fix: Fixed UI/UX issue in the settings screen where not including the paged breadcrumb still allowed the paged breadcrumb template to be edited.
* Bug fix: Removed use of `create_function` in registering the widget as it was deprecated in PHP 7.2.

= 5.7.1 =
Release date: June 30th, 2017

* Bug fix: Fixed erroneous use of `$linked` that caused a PHP warning in `bcn_display_json_ld()`.
* Bug fix: Fixed issue where removing a breadcrumb from the trail could cause one or more breadcrumb separators to inappropriately disappear.

= 5.7.0 =
Release date: April 21st, 2017

* New feature: Added `bcn_display_json_ld(`) function for producing Schema.org BreadcrumbList compliant JSON-LD markup.
* Bug fix: Fixed issue where the uninstaller caused PHP Errors when ran from WP CLI.
* Bug fix: Fixed issue where `bcn_breadcrumb_trail::find_type()` caused a PHP Warnings in certain circumstances.
* Bug fix: Fixed typo in the administrative interface.

= 5.6.0 =
Release date: December 23rd, 2016

* New feature: Added fourth parameter, `$force`, to `bcn_display()`, and `bcn_display_list()` allowing the internal caching mechanism to be bypassed.
* New feature: Moved to multiple line text boxes rather than regular single line text inputs for the breadcrumb templates in the settings page to enhance visibility.
* Bug fix: Fixed issue where general searches had the blog breadcrumb in the breadcrumb trail.
* Bug fix: Fixed issue where the blog breadcrumb options were erroneously made available when a Posts Page was not set.

= 5.5.2 =
Release date: September 30th, 2016

* Bug fix: Fixed issue where the “blog breadcrumb” setting does not affect the inclusion of the blog breadcrumb in the breadcrumb trail.

= 5.5.1 =
Release date: August 13th, 2016

* Bug fix: Fixed issue in `bcn_breadcrumb_trail::find_type()` that identified pages as posts, causing the erroneous inclusion of the post root in the breadcrumb trail for pages. 

= 5.5.0 =
Release date: August 12th, 2016

* Behavior change: Internal mechanics to handle post parents as the hierarchy for a post (of any post type) has changed to use 'BCN_POST_PARENT' rather than 'page' for the taxonomy_type.
* Behavior change: Internal mechanics to handle dates as the hierarchy for a post (of any post type) has changed to use 'BCN_DATE' rather than 'date' for the taxonomy_type.
* Behavior change: Taxonomy term hierarchy selection logic in `bcn_breadcrumb_trail::pick_post_term()` has changed to picking the deepest known child of the first hierarchy found in the list of terms returned by `get_the_terms()` rather than the first term with a child.
* New feature: Added support for referer influenced taxonomy selection for a post's (any post type) breadcrumb trail.
* New feature: Added `translate` and `lang` as valid attributes for tags within breadcrumb templates.
* New feature: Added `srcset` and `sizes` as valid attributes for `img` tags within breadcrumb templates.
* New feature: Added `itemprop` as a valid attribute for the `meta` tags within breadcrumb templates.
* Bug fix: Fixed various issues caused by other plugins/themes modifying the `$post` global.
* Bug fix: Fixed issue where WPML Extensions would cause a CPT without a set root page to use the Post post type's root page.

= 5.4.0 =
Release date: March 15th, 2016

* Behavior change: Migrated to new adminKit version, some functions previously in the admin classes are now handled upstream.
* New feature: Added `bcn_post_terms` filter to `bcn_breadcrumb_trail::post_terms()` to control the terms included in a non-hierarchical term breadcrumb for a post.
* New feature: Added `bcn_add_post_type_arg` filter to `bcn_breadcrumb_trail::maybe_add_post_type_arg()` to control when the post_type argument is added to URLs for archives.
* New feature: Added `bcn_pick_post_term` filter to `bcn_breadcrumb_trail::post_hierarchy()` to allow overriding Breadcrumb NavXT’s default term selection behavior.
* Bug fix: Fixed issue with untranslatable title on the settings page.
* Bug fix: Cleanup of several trivial differences between `bcn_admin` and `bcn_network_admin`.
* Bug fix: Fixed improper display of “Your settings are out of date. Migrate now.” message on fresh installs.
* Bug fix: Clarified verbiage in regards to the paged breadcrumb.
* Bug fix: Added translation wrappers for date format strings in `bcn_breadcrumb_trail::do_archive_by_date()`.
* Bug fix: Fixed issue where `bcn_breadcrumb_trail::is_builtin()` would cause PHP warnings when the passed in post type was not an actual post type.
* Bug fix: Fixed issue that would cause a PHP error if `WP_Widget` is unavailable.

= 5.3.1 =
Release date: December 14th, 2015

* Bug fix: Fixed alignment issue of the main content of the settings page on WordPress 4.4.
* Bug fix: Fixed error caused by options upgrading not re-establishing new settings.
* Bug fix: Fixed PHP error caused by `bcn_breadcrumb_trail::get_type_string_query_var()` returning an array when the post_type query variable is an array.

= 5.3.0 =
Release date: November 12th, 2015

* Behavior change: Breadcrumb NavXT will no longer default to setting the root page for CPTs.
* Behavior change: Breadcrumb NavXT will no longer inject a breadcrumb for a CPT archive page if a root page is set for that CPT.
* Behavior change: Breadcrumb NavXT now defaults to `BCN_SETTINGS_USE_LOCAL` rather than `BCN_SETTINGS_USE_NETWORK` if all of the `BCN_SETTINGS_*` globals are not defined.
* Behavior change: The included widget now supports RDFA style, Schema.org BreadcrumbList format rather than the deprecated Google Breadcrumbs format.
* Behavior change: Default settings for breadcrumb templates now conform to RDFA style, Schema.org BreadcrumbList format rather than the deprecated Google Breadcrumbs format.
* New feature: Added `bcn_widget_display_trail` action to enhance the included widget’s extensibility.
* New feature: Added `bcn_widget_display_types` action to enhance the included widget’s extensibility.
* New feature: The plugin uninstaller has been re-factored, includes support for uninstalling in PHP5.2.
* New feature: Unit tests added for all non-deprecated features in bcn_breadcrumb.
* New feature: Unit tests added for the uninstaller.
* New feature: Date based hierarchies are now available for CPTs.
* New feature: Date archives restricted by CPT are now supported.
* New feature: Taxonomy archives restricted by CPT are now supported.
* Bug fix: Fixed issue where the multibyte supplicant functions were not always being included due to WordPress shipping with its own subset of theses functions.
* Bug fix: Fixed issue where on an archive for a post type the archive breadcrumb would appear twice.

= 5.2.2 =
Release date: June 1st, 2015

* Bug fix: Fixed issue where the current item would use a built in default template rather than the breadcrumb template in the settings.
* Bug fix: Updated currently distributed translations set and list to match the current set of translations that achieve the 90% completeness threshold for inclusion.
* Bug fix: Fixed issue where a PHP warning would be displayed when BCN_SETTINGS_USE_NETWORK is defined.

= 5.2.1 =
Release date: May 25th, 2015

* Bug fix: Added additional checks for empty URLs and templates within `bcn_breadcrumb` to prevent various bugs when empty URLs and/or templates are passed in.
* Bug fix: Move away from building URLs for search breadcrumbs and instead using `get_search_link()` to fix support for pretty permalinks.
* Bug fix: Fixed issue where media items (attachments) that have not been attached to a post yet would cause an incorrect breadcrumb trail to be generated.
* Bug fix: Fixed issue where attachments of the front page would cause PHP Warnings.
* Bug fix: Fixed issue where attachments of the front page would have duplicate breadcrumbs for the home page.
* Bug fix: Fixed issue where attachments of pages would have an extraneous breadcrumb relating to the page for posts.
* Bug fix: Fixed issue with the text domain/domain path in the plugin header.

= 5.2.0 =
Release date: January 9th, 2015

* Deprecated: The Max Breadcrumb Length setting has been deprecated in favor of [using CSS styling to perform the length limiting](http://mtekk.us/archives/guides/trimming-breadcrumb-title-lengths-with-css/ "Go to the article presenting how to shorten the breadcrumb title length using CSS").
* Behavior change: The archive page for a post type is now generated for the top ancestor post rather than for the current page when "post parent" is used as the post's hierarchy.
* Behavior change: Now requires PHP5.3 or newer.
* New feature: Added `bcn_type_archive_post_type` filter.
* New feature: Settings depending on another setting to be enabled are disabled when the dependency setting is disabled.
* New feature: More descriptive messages on settings saving (notify user on success, failure, and no changes to save).
* Bug fix: Fixed awkward wording in the settings page for post hierarchy settings.
* Bug fix: Fixed missed default templates for post formats when all taxonomy settings had the tax_ prefix added in 5.1.
* Bug fix: Fixed bulk of compatibility issues with bbPress.

= 5.1.1 =
Release date: July 29th, 2014

* Bug fix: Fixed issue where attachments and their parents have the same link when 'link current item' is enabled.
* Bug fix: Pass the same parameters into the widget title and (pre) text filters as the default WordPress widgets.
* Bug fix: Fixed issue where PHP warnings would be thrown on author pages for authors that do not have any posts.
* Bug fix: Reduced severity of `$post` global not being of type `WP_Post`, will silently exit on non-WP_DEBUG enabled sites.

= 5.1.0 =
Release date: June 9th, 2014

* Behavior change: `bcn_breadcrumb_trail::do_post()` now expects to be passed in a valid WP_Post object.
* Behavior change: `breadcrumb_navxt::version` changed to a constant to allow uninstantiated access of the plugin version.
* New feature: Support Google's RDFa Breadcrumbs microformat by default.
* New feature: Added `bcn_opts_update_prebk` filter.
* Bug fix: Validate HTML5 options on tab traversal.
* Bug fix: Fixed issue where the settings importer parsed the version string incorrectly.
* Bug fix: Added 'typeof' to list of valid HTML tag attributes.
* Bug fix: Prefixed all taxonomies with 'tax_' to prevent name collisions.
* Bug fix: Added ID to Post and Taxonomy Term Elements in `bcn_breadcrumb_trail::do_root()` as is done everywhere else.
* Bug fix: Fixed issue with `bcn_breadcrumb_trail::do_author()` returning the incorrect user under some circumstances.
* Bug fix: Fixed issue where saving twice on a tab in the settings page would cause the next page load to open the general tab rather than the current tab.
* Bug fix: Added bcn_breadcrumb_template filter back into `bcn_breadcrumb::set_template()`, was a regression in 5.0 from 4.4.
* Bug fix: Fixed issue where the included widget did not check against default settings, causing PHP Warnings to show up on the frontend under some circumstances.
* Bug fix: Fixed issue where we didn't handle `WP_POST::has_archive` correctly when it was a string, causing issues with CPTs generated by some plugins.
* Bug fix: Fixed issue where the default taxonomy selected for a CPT could be a non-public taxonomy.
* Bug fix: Attachments get their own title within the settings page now.
* Bug fix: Filter the title and pre text in the widget.

= 5.0.1 = 
Release date: December 31st, 2013

* Behavior Change: Notify multisite users when settings may be overridden by the network settings and vice versa.
* Bug fix: Updated tab style to match WordPress 3.8 look and feel.
* Bug fix: Fixed issue where `bcn_breadcrumb_trail::display_list()` would produce multiple instances of the class attribute.
* Bug fix: Fixed several issues with the uninstaller.

= 5.0.0 =
Release date: November 20th, 2013

* Behavior Change: Moved `bcn_breadcrumb_trail::trail` to `bcn_breadcrumb_trail::breadcrumbs`
* Behavior Change: When WordPress is in multisite/network mode, the settings set in the network settings page take priority over subsite settings.
* New feature: Added `bcn_breadcrumb_trail_object` filter.
* New feature: Added `bcn_li_attributes` filter.
* New feature: Added `bcn_breadcrumb_types` filter.
* New feature: Added Network Admin Settings page.
* New feature: Added `xmlns:v` and `property` to the valid tag attributes.
* Bug fix: The current_item breadcrumb for search results should result in a valid HTTPS link when appropriate.

== Upgrade Notice ==
= 6.0.0 =
This version requires PHP5.3 or newer. This version introduces three new filters and deprecates a filter.

= 5.6.0 =
This version requires PHP5.3 or newer. This version introduces a new 4th optional parameter to `bcn_display()` and `bcn_display_list()` that bypasses the internal caching mechanism.