From 453ef7f1c64d18f39f7a8c288bba654146930fab Mon Sep 17 00:00:00 2001
From: Andrea Fercia <afercia@git.wordpress.org>
Date: Thu, 8 Mar 2018 21:30:29 +0000
Subject: [PATCH] Accessibility: Themes: use `aria-current` for the
 `Walker_Nav_Menu` current link.

The `aria-current` attribute is a simple, effective way to help assistive
technologies users orientate themselves within a list of items. Continues the
introduction in core of `aria-current` after [42440], [41683], [41359], and [41371].

Props williampatton, chetan200891, sami.keijonen.
Fixes #43191.


git-svn-id: https://develop.svn.wordpress.org/trunk@42808 602fd350-edb4-49c9-b593-d223f7449a82
---
 src/wp-includes/class-walker-nav-menu.php | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

diff --git a/src/wp-includes/class-walker-nav-menu.php b/src/wp-includes/class-walker-nav-menu.php
index 5e2335a512..eb452e3db6 100644
--- a/src/wp-includes/class-walker-nav-menu.php
+++ b/src/wp-includes/class-walker-nav-menu.php
@@ -169,11 +169,12 @@ class Walker_Nav_Menu extends Walker {
 
 		$output .= $indent . '<li' . $id . $class_names . '>';
 
-		$atts           = array();
-		$atts['title']  = ! empty( $item->attr_title ) ? $item->attr_title : '';
-		$atts['target'] = ! empty( $item->target ) ? $item->target : '';
-		$atts['rel']    = ! empty( $item->xfn ) ? $item->xfn : '';
-		$atts['href']   = ! empty( $item->url ) ? $item->url : '';
+		$atts                 = array();
+		$atts['title']        = ! empty( $item->attr_title ) ? $item->attr_title : '';
+		$atts['target']       = ! empty( $item->target ) ? $item->target : '';
+		$atts['rel']          = ! empty( $item->xfn ) ? $item->xfn : '';
+		$atts['href']         = ! empty( $item->url ) ? $item->url : '';
+		$atts['aria-current'] = $item->current ? 'page' : '';
 
 		/**
 		 * Filters the HTML attributes applied to a menu item's anchor element.
@@ -184,10 +185,11 @@ class Walker_Nav_Menu extends Walker {
 		 * @param array $atts {
 		 *     The HTML attributes applied to the menu item's `<a>` element, 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.
+		 *     @type string $title        Title attribute.
+		 *     @type string $target       Target attribute.
+		 *     @type string $rel          The rel attribute.
+		 *     @type string $href         The href attribute.
+		 *     @type string $aria_current The aria-current attribute.
 		 * }
 		 * @param WP_Post  $item  The current menu item.
 		 * @param stdClass $args  An object of wp_nav_menu() arguments.