functions.php

<?php
/**
 * @package Boss Child Theme
 * The parent theme functions are located at /boss/buddyboss-inc/theme-functions.php
 * Add your own functions in this file.
 */

if ( ! defined( 'BP_AVATAR_THUMB_WIDTH' ) ) define ( 'BP_AVATAR_THUMB_WIDTH', 150 );
if ( ! defined( 'BP_AVATAR_THUMB_HEIGHT' ) ) define ( 'BP_AVATAR_THUMB_HEIGHT', 150 );

add_filter( 'body_class', function( $classes ) {
	$classes = array_merge( $classes, array('page-template', 'page-template-page-no-buddypanel', 'page-template-page-no-buddypanel-php' ) );

	if ( $index = array_search( 'left-menu-open', $classes ) ) {
		unset( $classes[ $index ] );
	}

	return array_unique( $classes );
}, 11 );

add_action( 'wp_footer', 'no_buddypanel_all' );

/**
 * Sets up theme defaults
 *
 * @since Boss Child Theme 1.0.0
 */
function boss_child_theme_setup() {

	/**
	 * Makes child theme available for translation.
	 * Translations can be added into the /languages/ directory.
	 * Read more at: http://www.buddyboss.com/tutorials/language-translations/
	 */

	// Translate text from the PARENT theme.
	load_theme_textdomain( 'boss', get_stylesheet_directory() . '/languages' );

	// Translate text from the CHILD theme only.
	// Change 'boss' instances in all child theme files to 'boss_child_theme'.
	// load_theme_textdomain( 'boss_child_theme', get_stylesheet_directory() . '/languages' );
}
add_action( 'after_setup_theme', 'boss_child_theme_setup' );

/**
 * removes dynamic css (set in boss options admin page) from page output entirely,
 * since we include all necessary rules ourselves in this child theme
 */
function boss_child_theme_remove_dynamic_css( $reduxFramework ) {
	// remove both instances of dynamic css: one from redux, one from boss
	remove_action( 'wp_head', 'boss_generate_option_css', 99 );
	remove_action( 'wp_head', array( $reduxFramework, '_output_css' ), 150 );
}
add_action( 'wp_head', 'boss_child_theme_remove_dynamic_css' );

/**
 * Enqueues styles for child theme front-end.
 */
function boss_child_theme_enqueue_style() {
	if (
		class_exists( 'Humanities_Commons' ) &&
		! empty( Humanities_Commons::$society_id ) &&
		file_exists( get_stylesheet_directory() . '/css/' . Humanities_Commons::$society_id . '.css' )
	) {
		$ctime = filemtime( get_theme_file_path() . '/css/' . Humanities_Commons::$society_id . '.css' );
		wp_enqueue_style( 'boss-child-custom', get_stylesheet_directory_uri() . '/css/' . Humanities_Commons::$society_id . '.css', [], $ctime );
	} else {
		$ctime = filemtime( get_theme_file_path() . '/css/nc.css' );
		wp_enqueue_style( 'boss-child-custom', get_stylesheet_directory_uri() . '/css/nc.css', [], $ctime );
	}

}
// priority 200 to ensure this loads after redux which uses 150
add_action( 'wp_enqueue_scripts', 'boss_child_theme_enqueue_style', 200 );


/**
 * Enqueues scripts for child theme front-end.
 */
function boss_child_theme_enqueue_script() {
        $jtime = filemtime( get_theme_file_path() . '/js/boss-child.js' );
	wp_register_script( 'sweetalert', 'https://unpkg.com/sweetalert/dist/sweetalert.min.js' );
	wp_enqueue_script( 'boss-child-custom', get_stylesheet_directory_uri() . '/js/boss-child.js', [ 'jquery' ], $jtime );

	$user = wp_get_current_user();
	if ( $user->exists() && get_user_meta( $user->ID, 'shibboleth_account', true ) && ! get_user_meta( $user->ID, 'neu_username_updated', true ) ) {
		wp_enqueue_script( 'neu-onboarding', get_stylesheet_directory_uri() . '/js/onboarding.js', [ 'sweetalert', 'jquery', 'wp-util' ], $jtime, true );
	}
}
// priority 200 to ensure this loads after redux which uses 150
add_action( 'wp_enqueue_scripts', 'boss_child_theme_enqueue_script' );

/**
 * Listener for username update modal
 *
 * @since  1.0.0
 *
 * @author Tanner Moushey
 */
function neu_update_username() {
	$user = wp_get_current_user();

	if ( ! $user->exists() ) {
		wp_send_json_error( 'user not logged in' );
	}

	if ( ! get_user_meta( $user->ID, 'shibboleth_account', true ) ) {
		wp_send_json_error( array( 'message' => 'not a shibboleth account', 'retry' => false ) );
	}

	if ( get_user_meta( $user->ID, 'neu_username_updated', true ) ) {
		wp_send_json_error( array( 'message' => 'username already updated', 'retry' => false ) );
	}

	$original_username = strtolower( $_POST['username'] );
	$username = neu_check_username( $original_username );

	if ( is_wp_error( $username ) ) {
		wp_send_json_error( array( 'message' => $username->get_error_message(), 'retry' => true ) );
	}

	if ( $username != $original_username ) {
		wp_send_json_error( array( 'message' => 'The username you entered is invalid. Please use only numbers, letters, and dashes.', 'retry' => true ) );
	}

	$user->user_nicename = $username;

	if ( $user->display_name === $user->user_login ) {
		$user->display_name = $username;
	}

	if ( xprofile_get_field_data( 'Name', $user->ID ) === $user->user_login ) {
		xprofile_set_field_data( 'Name', $user->ID, $user->display_name );
	}

	wp_update_user( $user );
	wp_cache_set( 'bp_user_username_' . $user->ID, $username, 'bp' );
	
	update_user_meta( $user->ID, 'neu_username_updated', true );

	wp_send_json_success( $username );
}
add_action( 'wp_ajax_neu_update_username', 'neu_update_username' );

/**
 * Validate username. Taken from wp_insert_user();
 *
 * @param $username
 * @see wp_insert_user()
 *
 * @return WP_Error | string
 * @author Tanner Moushey
 */
function neu_check_username( $username ) {
	global $wpdb;

	$username = apply_filters( 'pre_user_login', sanitize_user( $username, true ) );
	$username = trim( $username );
	$username = apply_filters( 'pre_user_nicename', sanitize_title( $username ) );

	// user_login must be between 0 and 60 characters.
	if ( empty( $username ) ) {
		return new WP_Error( 'empty_user_login', __( 'Cannot create a user with an empty login name.' ) );
	} elseif ( mb_strlen( $username ) > 60 ) {
		return new WP_Error( 'user_login_too_long', __( 'Username may not be longer than 60 characters.' ) );
	}

	if ( get_user_by( 'slug', $username ) ) {
		return new WP_Error( 'existing_user_login', __( 'Sorry, that username already exists!' ) );
	}

	/**
	 * Filters the list of blacklisted usernames.
	 *
	 * @since 4.4.0
	 *
	 * @param array $usernames Array of blacklisted usernames.
	 */
	$illegal_logins = (array) apply_filters( 'illegal_user_logins', array() );

	if ( in_array( strtolower( $username ), array_map( 'strtolower', $illegal_logins ) ) ) {
		return new WP_Error( 'invalid_username', __( 'Sorry, that username is not allowed.' ) );
	}

	return $username;
}

/**
 * some thumbnails have been generated with small dimensions due to
 * BP_AVATAR_THUMB_WIDTH being too small at the time. this is a temporary
 * workaround to prevent artifacts/blurriness where those thumbnails appear by
 * using the full avatar rather than the thumb.
 *
 * TODO once bad thumbnails have been replaced/removed, this filter should be
 * removed to improve performance.
 */
function hcommons_filter_bp_get_group_invite_user_avatar() {
	global $invites_template;
	return $invites_template->invite->user->avatar; // rather than avatar_thumb
}
add_filter( 'bp_get_group_invite_user_avatar', 'hcommons_filter_bp_get_group_invite_user_avatar' );

/**
 * affects boss mobile right-hand main/top user menu
 */
function boss_child_change_profile_edit_to_view_in_adminbar() {
	global $wp_admin_bar;

	if ( is_user_logged_in() ) {
		// the item which has the user's name/avatar as title and links to "edit"
		$user_info_clone = $wp_admin_bar->get_node( 'user-info' );
		// the item which has "Profile" as title and links to "view"
		$my_account_xprofile_clone = $wp_admin_bar->get_node( 'my-account-xprofile' );

		// use "view" url for the name/avatar item
		$user_info_clone->href = $my_account_xprofile_clone->href;
		$wp_admin_bar->add_menu( $user_info_clone );

		// remove the second, now redundant, item
		$wp_admin_bar->remove_menu( 'edit-profile' );
	}
}
// priority 1000 to override boss buddyboss_strip_unnecessary_admin_bar_nodes()
add_action( 'admin_bar_menu', 'boss_child_change_profile_edit_to_view_in_adminbar', 1000 );


/**
 * Handles ajax for the boss-child theme
 * @return void
 */
function boss_child_theme_ajax() {

	//this is for settings-general ajax
	$user = wp_get_current_user();
	$nonce = wp_create_nonce('settings_general_nonce');
	wp_localize_script( 'boss-child-custom', 'settings_general_req', [ 'user' => $user, 'nonce' => $nonce ], ['jquery'] );

}

add_action('wp_enqueue_scripts', 'boss_child_theme_ajax');

function boss_child_fix_redux_script_paths() {
	global $wp_scripts;
	foreach ( $wp_scripts->registered as &$registered ) {
		$registered->src = str_replace( '/srv/www/commons/current/web', '', $registered->src );
	}
}
add_action( 'admin_enqueue_scripts', 'boss_child_fix_redux_script_paths' );

function boss_child_turn_off_redux_ajax_save( $data ) {
	$data['args']['ajax_save'] = false;
	return $data;
}
add_filter( 'redux/boss_options/localize', 'boss_child_turn_off_redux_ajax_save' );

/**
 * Adds support for user at-mentions to the Suggestions API.
 */
class MLA_Name_Suggestions extends BP_Suggestions {

        /**
        * Default arguments for this suggestions service.
        *
        * @since BuddyPress (2.1.0)
        * @var array $args {
        *     @type int $limit Maximum number of results to display. Default: 200.
        *     @type string $term The suggestion service will try to find results that contain this string.
        *           Mandatory.
        * }
        */
        protected $default_args = array(
                'limit'        => 200,
                'term'         => '',
                'type'         => '',
        );

        /**
        * Validate and sanitise the parameters for the suggestion service query.
        *
        * @return true|WP_Error If validation fails, return a WP_Error object. On success, return true (bool).
        * @since BuddyPress (2.1.0)
        */
        public function validate() {
                $this->args = apply_filters( 'mla_name_suggestions_args', $this->args, $this );

                // Check for invalid or missing mandatory parameters.
                if ( empty( $this->args['term'] ) || ! is_user_logged_in()  ) {
                        return new WP_Error( 'missing_requirement' );
                }

                return apply_filters( 'mla_name_suggestions_validate_args', parent::validate(), $this );
        }

        /**
        * Find and return a list of user name suggestions that match the query.
        *
        * @return array|WP_Error Array of results. If there were problems, returns a WP_Error object.
        * @since BuddyPress (2.1.0)
        */
        public function get_suggestions() {

                $user_query = array(
                        'count_total'     => '',  // Prevents total count
                        'populate_extras' => false,
                        'type'            => 'alphabetical',

                        'page'            => 1,
                        'per_page'        => $this->args['limit'],
                        'search_terms'    => $this->args['term'],
                        'search_wildcard' => 'right',
                );

                $user_query = apply_filters( 'mla_suggestions_query_args', $user_query, $this );

                if ( is_wp_error( $user_query ) ) {
                        return $user_query;
                }

                add_action( 'bp_pre_user_query', array( $this, 'mla_query_users_by_name' ) );

                $user_query = new BP_User_Query( $user_query );

                $results = array();
                foreach ( $user_query->results as $user ) {
                        $result        = new stdClass();
                        $result->ID    = $user->user_nicename;
                        $result->image = bp_core_fetch_avatar( array( 'html' => false, 'item_id' => $user->ID ) );
                        $result->name  = bp_core_get_user_displayname( $user->ID );

                        $results[] = $result;
                }

                return apply_filters( 'mla_name_suggestions_get_suggestions', $results, $this );
        }

        /**
        * Query users by name
        *
        * @param BP_User_Query $bp_user_query
        */
        public function mla_query_users_by_name( $bp_user_query ) {

                global $wpdb;
                $society_id = get_network_option( '', 'society_id' );

        if ( ! empty( $bp_user_query->query_vars['search_terms'] ) ) {
                        $bp_user_query->uid_clauses['where'] = " WHERE u.ID IN ( SELECT tr.object_id FROM {$wpdb->users} us, wp_1000360_terms t, wp_1000360_term_relationships tr, wp_1000360_term_taxonomy tt where t.term_id = tt.term_id and tt.term_taxonomy_id = tr.term_taxonomy_id and tt.taxonomy='bp_member_type' and t.slug='{$society_id}' and tr.object_id = us.ID and us.spam = 0 AND us.deleted = 0 AND us.user_status = 0 AND ( us.display_name LIKE '%" . ucfirst( strtolower(  $bp_user_query->query_vars['search_terms'] ) ) ."%' OR us.user_login LIKE '%" . strtolower( $bp_user_query->query_vars['search_terms'] ) . "%' ) )";
                        $bp_user_query->uid_clauses['orderby'] = "ORDER BY u.display_name";
                }

        }

}
add_filter( 'bp_suggestions_services', function() { return 'MLA_Name_Suggestions'; } );

/**
 * Override BP AJAX endpoint for Suggestions API lookups.
 *
 * @since BuddyPress (2.1.0)
 */
function mla_ajax_get_suggestions() {
        if ( ! bp_is_user_active() || empty( $_GET['term'] ) || empty( $_GET['type'] ) ) {
                wp_send_json_error( 'missing_parameter' );
                exit;
        }

        $results = bp_core_get_suggestions( array(
                'term' => sanitize_text_field( $_GET['term'] ),
                'type' => 'mla_members',
                'limit' => '200',
        ) );

        if ( is_wp_error( $results ) ) {
                wp_send_json_error( $results->get_error_message() );
                exit;
        }

        wp_send_json_success( $results );
}
remove_action( 'wp_ajax_bp_get_suggestions', 'bp_ajax_get_suggestions' );
add_action( 'wp_ajax_bp_get_suggestions', 'mla_ajax_get_suggestions' );

/**
 * Enqueue @mentions JS.
 *
*/
function mla_member_mentions_script() {
        if ( ! bp_activity_maybe_load_mentions_scripts() ) {
                return;
        }

        // Special handling for New/Edit screens in wp-admin
        if ( is_admin() ) {
                if (
                        ! get_current_screen() ||
                        ! in_array( get_current_screen()->base, array( 'page', 'post' ) ) ||
                        ! post_type_supports( get_current_screen()->post_type, 'editor' ) ) {
                        return;
                }
        }

	$min = '';
        //$min = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';

        wp_enqueue_script( 'mla-mentions', get_stylesheet_directory_uri() . "/js/mentions{$min}.js", array( 'jquery', 'jquery-atwho' ), bp_get_version(), true );
	wp_enqueue_style( 'mla-mentions-css', get_stylesheet_directory_uri() . "/css/mentions{$min}.css", array(), bp_get_version() );

}
remove_action( 'bp_enqueue_scripts', 'bp_activity_mentions_script' );
remove_action( 'bp_admin_enqueue_scripts', 'bp_activity_mentions_script' );
add_action( 'bp_enqueue_scripts', 'mla_member_mentions_script' );
add_action( 'bp_admin_enqueue_scripts', 'mla_member_mentions_script' );

function mla_mentions_script_enable( $current_status ) {
        return $current_status || bp_is_groups_component();
}
add_filter( 'bp_activity_maybe_load_mentions_scripts', 'mla_mentions_script_enable' );

/**
 * @param boolean $load
 * @param $mentions_enabled
 * @return boolean enabled ot not?
 */
function buddydev_enable_mention_autosuggestions_on_compose( $load, $mentions_enabled ) {

        if ( ! $mentions_enabled ) {
                return $load; //activity mention is  not enabled, so no need to bother
        }
        //modify this condition to suit yours
        if( is_user_logged_in() && bp_is_messages_compose_screen() ) {
                $load = true;
        }

        return $load;
}
add_filter( 'bp_activity_maybe_load_mentions_scripts', 'buddydev_enable_mention_autosuggestions_on_compose', 10, 2 );

/**
 * Removes autocomplete js and css so mentions.js can be used in compose screen for autocomplete
 *
 * @return void
 */
function remove_messages_add_autocomplete_js_css() {
        remove_action( 'bp_enqueue_scripts', 'messages_add_autocomplete_js' );
        remove_action( 'wp_head', 'messages_add_autocomplete_css' );
}

add_action( 'init', 'remove_messages_add_autocomplete_js_css' );

/**
 * This is dequeued by remove_messages_add_autocomplete_js_css(),
 * but Boss adds it back in buddyboss_scripts_styles().
 * Remove it on that action again.
 */
function hcommons_dequeue_bgiframe() {
	wp_dequeue_script( 'bp-jquery-bgiframe' );
}
add_action( 'wp_enqueue_scripts', 'hcommons_dequeue_bgiframe', 20 );

/**
 * Fixes css in admin for discussion forum metabox
 *
 * @return void
 */
function groups_discussion_admin_metabox() {

        echo '<style type="text/css">';
        echo '#bbpress_group_admin_ui_meta_box .field-group, #bbpress_group_admin_ui_meta_box p { max-width: 65% !important; float: left !important; }';
        echo '</style>';

}

add_action( 'admin_head', 'groups_discussion_admin_metabox' );

/**
 * Circumvent the signup allowed option to always show the register button in the header.
 * @uses Humanities_Commons
 */
function hcommons_filter_bp_get_signup_allowed( $allowed ) {
	if ( class_exists( 'Humanities_Commons' ) && Humanities_Commons::backtrace_contains( 'file', '/srv/www/commons/current/web/app/themes/boss/header.php' ) ) {
		$allowed = true;
	}

	return $allowed;
}
//add_filter( 'bp_get_signup_allowed', 'hcommons_filter_bp_get_signup_allowed' );

/**
 * overriding parent function to use group/member avatars in search results
 * TODO use group/member avatars in search results
 */
function buddyboss_entry_meta( $show_author = true, $show_date = true, $show_comment_info = true ) {
	global $post;

	// Translators: used between list items, there is a space after the comma.
	$categories_list = get_the_category_list( __( ', ', 'boss' ) );

	// Translators: used between list items, there is a space after the comma.
	$tag_list = get_the_tag_list( '', __( ', ', 'boss' ) );

	$date = sprintf( '<a href="%1$s" title="%2$s" rel="bookmark" class="post-date fa fa-clock-o"><time class="entry-date" datetime="%3$s">%4$s</time></a>', esc_url( get_permalink() ), esc_attr( get_the_time() ), esc_attr( get_the_date( 'c' ) ), esc_html( get_the_date() )
	);

	$author = sprintf( '<span class="author vcard"><a class="url fn n" href="%1$s" title="%2$s" rel="author">%3$s</a></span>', esc_url( get_author_posts_url( get_the_author_meta( 'ID' ) ) ), esc_attr( sprintf( __( 'View %s', 'boss' ), get_the_author() ) ), get_the_author()
	);

	// for bp avatars
	$args = [
		'item_id' => get_the_id(),
		'height' => 65,
		'width' => 65,
	];

	switch ( $post->post_type ) {
		case EP_BP_API::GROUP_TYPE_NAME:
			$args['type'] = 'group';
			$args = array_merge( $args, [
				'avatar_dir' => 'group-avatars',
				'object'     => 'group',
			] );
			$avatar = sprintf( '<a href="%1$s" rel="bookmark">%2$s</a>', esc_url( $post->permalink ), bp_core_fetch_avatar( $args ) );
			break;
		case 'reply':
		case 'topic':
		case 'humcore_deposit':
			$args['item_id'] = $post->post_author;
		case EP_BP_API::MEMBER_TYPE_NAME:
			$args['type'] = 'user';
			$avatar = sprintf( '<a href="%1$s" rel="bookmark">%2$s</a>', esc_url( $post->permalink ), bp_core_fetch_avatar( $args ) );
			break;
	}

	if ( empty( $avatar ) && function_exists( 'get_avatar' ) ) {
		$avatar = sprintf( '<a href="%1$s" rel="bookmark">%2$s</a>', esc_url( get_permalink() ), get_avatar( get_the_author_meta( 'email' ), 55 )
		);
	}

	if ( $show_author ) {
		echo '<span class="post-author">';
		echo $avatar;
		echo $author;
		echo '</span>';
	}

	if ( $show_date ) {
		echo $date;
	}

	if ( $show_comment_info ) {
		if ( comments_open() ) :
?>
				<!-- reply link -->
				<span class="comments-link fa fa-comment-o">
					<?php comments_popup_link( '<span class="leave-reply">' . __( '0 comments', 'boss' ) . '</span>', __( '1 comment', 'boss' ), __( '% comments', 'boss' ) ); ?>
				</span><!-- .comments-link -->
<?php
			endif; // comments_open()
	}
}
//display bbPress search form above sinle topics and forums
function mla_bbp_search_form(){

    if ( bbp_allow_search()) {
        ?>
        <div class="bbp-search-form">

            <?php bbp_get_template_part( 'form', 'search' ); ?>

        </div>
        <?php
    }
}

add_action( 'bbp_template_before_single_forum', 'mla_bbp_search_form' );


function mla_bbp_filter_search_results( $r ){

    $r['ep_integrate'] = false;

    //Get the submitted forum ID (added in gethub > bbpress > form-search.php)
    $forum_id = sanitize_title_for_query( $_GET['bbp_search_forum_id'] );

    //If the forum ID exits, filter the query
    if( $forum_id && is_numeric( $forum_id ) ){

        $r['meta_query'] = array(
            array(
                'key' => '_bbp_forum_id',
                'value' => $forum_id,
                'compare' => '=',
            )
        );

        $group_id = bbp_get_forum_group_ids( $forum_id );
        if( groups_is_user_member( bp_loggedin_user_id(), $group_id[0] ) )
        {
            function mla_allow_all_forums () { return true; }
            add_filter( 'bbp_include_all_forums', 'mla_allow_all_forums' );
        }
    }

    return $r;
}

add_filter( 'bbp_after_has_search_results_parse_args' , 'mla_bbp_filter_search_results' );


add_filter( 'body_class', 'mla_search_body_class' );

function mla_search_body_class( $classes ) {

   $name = null;
   if(bbp_is_search()) {
       $name = 'groups single-item';
   }

   return array_merge( $classes, array($name ) );
}

function mla_search_results_pagination( $args ) {
   global $wp_rewrite;

   $base = trailingslashit( get_permalink() );
   $group_slug = bp_get_current_group_slug();

   $base = $base . 'groups/' .  $group_slug . '/forum/search-forum/' .  user_trailingslashit( $wp_rewrite->pagination_base . '/%#%/' );
   $args['base'] = $base;

   return $args;
}

add_filter('bbp_search_results_pagination', 'mla_search_results_pagination');

/**
 * Filters the Groups Blog subnav label
 *
 * @param $name
 *
 * @return string
 */
function nucommons_groupblog_label( $name ) {
	return 'Blog';
}
add_filter('bp_groupblog_subnav_item_name','nucommons_groupblog_label');

/**
 * Temporarily force BuddyPress to use wp_mail
 */
 add_filter( 'bp_email_use_wp_mail', __return_true() );

/**
 * Filter the wp_mail arguments to statically set the to address.
 *
 * @param $atts
 *
 * @return mixed
 */
function nucommons_redirect_emails( $atts ) {
	$atts['to'] = array( 'dusty@dustyf.com', 'p.yott@northeastern.edu', 'support@iwitnessdesign.com' );
	return $atts;
}
add_filter( 'wp_mail', 'nucommons_redirect_emails' );


/**
 * Add @handle to forum replies
 *
 * @since Boss 1.0.0
 *
 */
function nucommons_add_handle() {
	remove_action( 'bbp_theme_after_reply_author_details', 'buddyboss_add_handle' );

	if ( bbp_get_reply_id() ) {
		$bb_username = get_userdata( bbp_get_reply_author_id( bbp_get_reply_id() ) );
		echo '<span class="bbp-user-nicename"><span class="handle-sign">@</span>' . $bb_username->user_nicename . '</span>';
	}
}
add_action( 'bbp_theme_after_reply_author_details', 'nucommons_add_handle', 9 );

/**
 * Custom Walker for left panel menu
 *
 * @since Boss 1.0.0
 *
 */
class NEUHeaderWalker extends Walker {

	/**
	 * What the class handles.
	 *
	 * @see Walker::$tree_type
	 * @since Boss 1.0.0
	 * @var string
	 */
	public $tree_type = array( 'post_type', 'taxonomy', 'custom' );

	/**
	 * Database fields to use.
	 *
	 * @see Walker::$db_fields
	 * @since Boss 1.0.0
	 * @todo Decouple this.
	 * @var array
	 */
	public $db_fields = array( 'parent' => 'menu_item_parent', 'id' => 'db_id' );

	/**
	 * Starts the list before the elements are added.
	 *
	 * @see Walker::start_lvl()
	 *
	 * @since Boss 1.0.0
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param int    $depth  Depth of menu item. Used for padding.
	 * @param array  $args   An array of arguments. @see wp_nav_menu()
	 */
	public function start_lvl( &$output, $depth = 0, $args = array() ) {
		$indent	 = str_repeat( "\t", $depth );
		$output	 .= "\n$indent<div class='sub-menu-wrap'><ul class=\"sub-menu\">\n";
	}

	/**
	 * Ends the list of after the elements are added.
	 *
	 * @see Walker::end_lvl()
	 *
	 * @since Boss 1.0.0
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param int    $depth  Depth of menu item. Used for padding.
	 * @param array  $args   An array of arguments. @see wp_nav_menu()
	 */
	public function end_lvl( &$output, $depth = 0, $args = array() ) {
		$indent	 = str_repeat( "\t", $depth );
		$output	 .= "$indent</ul></div>\n";
	}

	/**
	 * Start the element output.
	 *
	 * @see Walker::start_el()
	 *
	 * @since Boss 1.0.0
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param object $item   Menu item data object.
	 * @param int    $depth  Depth of menu item. Used for padding.
	 * @param array  $args   An array of arguments. @see wp_nav_menu()
	 * @param int    $id     Current item ID.
	 */
	public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
		$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

		$icon_classes = array();
		$registered_icon_classes = array( 'bp-blogs-nav', 'bp-activity-nav', 'bp-profile-nav', 'bp-notifications-nav', 'bp-messages-nav', 'bp-friends-nav', 'bp-followers-nav', 'bp-following-nav', 'bp-groups-nav', 'bp-forums-nav', 'bp-settings-nav', 'bp-logout-nav', 'bp-login-nav', 'bp-register-nav', 'bp-courses-nav', 'bp-achievements-nav' );
		$in_registered_icon_classes = false;

		foreach ( $item->classes as $key => $value ) {
			if ( substr( $value, 0, 3 ) === 'fa-' || substr( $value, 0, 2 ) === 'fa' || substr( $value, 0, 3 ) === 'fab' || substr( $value, 0, 3 ) === 'far' ) {
				$icon_classes[] = $value;
			}
			if ( substr( $value, 0, 2 ) === 'fa' ) {
				unset( $item->classes[ $key ] );
			}
			if( in_array( $value, $registered_icon_classes ) ) {
				$in_registered_icon_classes = true;
				break;
            }
		}

		if ( $item->menu_item_parent === '0' && empty( $icon_classes ) ) {
			$icon_classes[] = 'fa fa-file';
		}

		if ( $in_registered_icon_classes ) {
			$icon_classes = array();
        }

		$classes	 = empty( $item->classes ) ? array() : (array) $item->classes;
		$classes[]	 = 'menu-item-' . $item->ID;

		/**
		 * Filter the CSS class(es) applied to a menu item's <li>.
		 *
		 * @since Boss 1.0.0
		 *
		 * @see wp_nav_menu()
		 *
		 * @param array  $classes The CSS classes that are applied to the menu item's <li>.
		 * @param object $item    The current menu item.
		 * @param array  $args    An array of wp_nav_menu() arguments.
		 */
		$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) );
		$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';

		/**
		 * Filter the ID applied to a menu item's <li>.
		 *
		 * @since Boss 1.0.0
		 *
		 * @see wp_nav_menu()
		 *
		 * @param string $menu_id The ID that is applied to the menu item's <li>.
		 * @param object $item    The current menu item.
		 * @param array  $args    An array of wp_nav_menu() arguments.
		 */
		$id	 = apply_filters( 'nav_menu_item_id', 'menu-item-' . $item->ID, $item, $args );
		$id	 = $id ? ' id="' . esc_attr( $id ) . '"' : '';

		$output .= $indent . '<li' . $id . $class_names . '>';

		$atts				 = array();
		$atts[ 'title' ]	 = !empty( $item->attr_title ) ? $item->attr_title : $item->title;
		$atts[ 'target' ]	 = !empty( $item->target ) ? $item->target : '';
		$atts[ 'rel' ]		 = !empty( $item->xfn ) ? $item->xfn : '';
		$atts[ 'href' ]		 = !empty( $item->url ) ? $item->url : '';

		/**
		 * Filter the HTML attributes applied to a menu item's <a>.
		 *
		 * @since Boss 1.0.0
		 *
		 * @see wp_nav_menu()
		 *
		 * @param array $atts {
		 *     The HTML attributes applied to the menu item's <a>, empty strings are ignored.
		 *
		 *     @type string $title  Title attribute.
		 *     @type string $target Target attribute.
		 *     @type string $rel    The rel attribute.
		 *     @type string $href   The href attribute.
		 * }
		 * @param object $item The current menu item.
		 * @param array  $args An array of wp_nav_menu() arguments.
		 */
		$archor_classes = join( ' ', $icon_classes );
		$archor_classes = 'class="' . esc_attr( $archor_classes ) . '"';

		$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args );

		$attributes = '';
		foreach ( $atts as $attr => $value ) {
			if ( !empty( $value ) ) {
				$value		 = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
				$attributes	 .= ' ' . $attr . '="' . $value . '"';
			}
		}

		$item_output = $args->before;
		$item_output .= '<a' . $attributes . '>';
		if ( ! empty( $icon_classes ) && ! empty( $args->theme_location ) ) {
			$item_output .= '<i ' . $archor_classes . '></i> <strong>' . $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after . '</strong>';
		} else {
			$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
		}
		$item_output .= '</a>';
		$item_output .= $args->after;

		/**
		 * Filter a menu item's starting output.
		 *
		 * The menu item's starting output only includes $args->before, the opening <a>,
		 * the menu item's title, the closing </a>, and $args->after. Currently, there is
		 * no filter for modifying the opening and closing <li> for a menu item.
		 *
		 * @since Boss 1.0.0
		 *
		 * @see wp_nav_menu()
		 *
		 * @param string $item_output The menu item's starting HTML output.
		 * @param object $item        Menu item data object.
		 * @param int    $depth       Depth of menu item. Used for padding.
		 * @param array  $args        An array of wp_nav_menu() arguments.
		 */
		$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
	}

	/**
	 * Ends the element output, if needed.
	 *
	 * @see Walker::end_el()
	 *
	 * @since Boss 1.0.0
	 *
	 * @param string $output Passed by reference. Used to append additional content.
	 * @param object $item   Page data object. Not used.
	 * @param int    $depth  Depth of page. Not Used.
	 * @param array  $args   An array of arguments. @see wp_nav_menu()
	 */
	public function end_el( &$output, $item, $depth = 0, $args = array() ) {
		$output .= "</li>\n";
	}

}