From 8f69ebf8125ccc585031b11c550c86098e370add Mon Sep 17 00:00:00 2001
From: Andrea Fercia <a.fercia@gmail.com>
Date: Fri, 15 Mar 2019 14:54:52 +0000
Subject: [PATCH] Accessibility: Improve the semantics of "tabs" that are not
 real ARIA tabs.

Some "visual tabs" in the WordPress admin used links wrapped in a `h2` heading. While these tabs look like ARIA tabs, they're just navigation menus and should be marked-up as such to be correctly exposed to assistive technologies.
- changes the wrapping `<h2>` to a `<nav>` element: worth reminding `<nav>` elements also define ARIA landmarks
- adds an `aria-label` to the `<nav>` elements so they can be distinguished from other `<nav>` elements in the page
- adjusts the headings level in the Credits page

Props audrasjb, afercia.
Fixes #43398.

Built from https://develop.svn.wordpress.org/trunk@44905


git-svn-id: http://core.svn.wordpress.org/trunk@44736 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/about.php             | 4 ++--
 wp-admin/credits.php           | 6 +++---
 wp-admin/css/about-rtl.css     | 4 +++-
 wp-admin/css/about-rtl.min.css | 2 +-
 wp-admin/css/about.css         | 4 +++-
 wp-admin/css/about.min.css     | 2 +-
 wp-admin/freedoms.php          | 4 ++--
 wp-admin/includes/ms.php       | 4 ++--
 wp-admin/nav-menus.php         | 4 ++--
 wp-includes/version.php        | 2 +-
 10 files changed, 20 insertions(+), 16 deletions(-)

diff --git a/wp-admin/about.php b/wp-admin/about.php
index e8231ac826..68de892a54 100644
--- a/wp-admin/about.php
+++ b/wp-admin/about.php
@@ -27,12 +27,12 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 
 		<div class="wp-badge"><?php printf( __( 'Version %s' ), $display_version ); ?></div>
 
-		<h2 class="nav-tab-wrapper wp-clearfix">
+		<nav class="nav-tab-wrapper wp-clearfix" aria-label="<?php esc_attr_e( 'Secondary menu' ); ?>">
 			<a href="about.php" class="nav-tab nav-tab-active"><?php _e( 'What&#8217;s New' ); ?></a>
 			<a href="credits.php" class="nav-tab"><?php _e( 'Credits' ); ?></a>
 			<a href="freedoms.php" class="nav-tab"><?php _e( 'Freedoms' ); ?></a>
 			<a href="freedoms.php?privacy-notice" class="nav-tab"><?php _e( 'Privacy' ); ?></a>
-		</h2>
+		</nav>
 
 		<h2 class="feature-section-header"><?php _e( 'A Little Better Every Day' ); ?></h2>
 
diff --git a/wp-admin/credits.php b/wp-admin/credits.php
index 92073d9776..e9bd916fa8 100644
--- a/wp-admin/credits.php
+++ b/wp-admin/credits.php
@@ -24,12 +24,12 @@ include( ABSPATH . 'wp-admin/admin-header.php' );
 
 <div class="wp-badge"><?php printf( __( 'Version %s' ), $display_version ); ?></div>
 
-<h2 class="nav-tab-wrapper wp-clearfix">
+<nav class="nav-tab-wrapper wp-clearfix" aria-label="<?php esc_attr_e( 'Secondary menu' ); ?>">
 	<a href="about.php" class="nav-tab"><?php _e( 'What&#8217;s New' ); ?></a>
 	<a href="credits.php" class="nav-tab nav-tab-active"><?php _e( 'Credits' ); ?></a>
 	<a href="freedoms.php" class="nav-tab"><?php _e( 'Freedoms' ); ?></a>
 	<a href="freedoms.php?privacy-notice" class="nav-tab"><?php _e( 'Privacy' ); ?></a>
-</h2>
+</nav>
 
 <div class="about-wrap-content">
 <?php
@@ -72,7 +72,7 @@ foreach ( $credits['groups'] as $group_slug => $group_data ) {
 			$title = translate( $group_data['name'] );
 		}
 
-		echo '<h3 class="wp-people-group">' . esc_html( $title ) . "</h3>\n";
+		echo '<h2 class="wp-people-group">' . esc_html( $title ) . "</h2>\n";
 	}
 
 	if ( ! empty( $group_data['shuffle'] ) ) {
diff --git a/wp-admin/css/about-rtl.css b/wp-admin/css/about-rtl.css
index aa94402a4d..2b9d2f65fb 100644
--- a/wp-admin/css/about-rtl.css
+++ b/wp-admin/css/about-rtl.css
@@ -401,11 +401,13 @@
 
 /* Credits */
 
-.about-wrap h3.wp-people-group {
+.about-wrap h2.wp-people-group {
 	margin: 2.6em 0 1.33em;
 	padding: 0;
 	font-size: 16px;
 	line-height: inherit;
+	font-weight: 600;
+	text-align: right;
 }
 
 .about-wrap .wp-people-group {
diff --git a/wp-admin/css/about-rtl.min.css b/wp-admin/css/about-rtl.min.css
index 156df540f0..adc084cc15 100644
--- a/wp-admin/css/about-rtl.min.css
+++ b/wp-admin/css/about-rtl.min.css
@@ -1,2 +1,2 @@
 /*! This file is auto-generated */
-.about-wrap{position:relative;margin:25px 20px 0 40px;max-width:1050px;font-size:15px}.about-wrap.full-width-layout{max-width:1200px}.about-wrap-content{max-width:1050px}.about-wrap .notice,.about-wrap div.error,.about-wrap div.updated{display:none!important}.about-wrap hr{border:0;height:0;margin:3em 0 0;border-top:1px solid rgba(0,0,0,.1)}.about-wrap img{margin:0;width:100%;height:auto;vertical-align:middle}.about-wrap figure{position:relative;margin:0}.about-wrap .feature-section figure img{margin-bottom:0}.about-wrap figcaption{position:absolute;bottom:0;width:100%;padding:40px 10px 15px;overflow:auto;box-sizing:border-box;background:linear-gradient(0deg,rgba(0,0,0,.7),rgba(0,0,0,.3) 60%,transparent);font-weight:600;text-shadow:0 0 5px rgba(0,0,0,.75)}.about-wrap .jetpack-video-wrapper{margin-bottom:0}.wp-badge{background:#0073aa url(../images/w-logo-white.png?ver=20160308) no-repeat;background-position:center 25px;background-size:80px 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p{font-size:14px;font-weight:400}.about-wrap figcaption{font-size:13px;text-align:center;color:#fff;text-overflow:ellipsis}.about-wrap .about-description,.about-wrap .about-text{margin-top:1.4em;font-weight:400;line-height:1.6em;font-size:19px}.about-wrap .about-text{margin:1em 0 1em 200px;color:#555d66}.about-wrap [class$="-col"]{display:flex;justify-content:space-between;flex-wrap:wrap}.about-wrap .one-col{margin:0 auto;max-width:680px}.about-wrap .one-col.is-wide{max-width:760px}.about-wrap .under-the-hood{margin:auto;max-width:1020px}.about-wrap .inline-svg img{max-width:100%;width:100%;height:auto}.about-wrap .inline-svg.full-width{margin-bottom:120px}.about-wrap .under-the-hood .inline-svg{margin-right:100px}.about-wrap [class$="-col"] .col{flex:1;align-self:flex-start}.about-wrap [class$="-col"] .col+.col{margin-right:20px}.about-wrap [class$="-col"] .is-span-two{flex:2}.about-wrap .one-col img{margin:1em 0 2em}.about-wrap .one-col .alignright img{margin-top:0}.about-wrap 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.wp-people-group{padding:0 5px;margin:0 -5px 0 -15px}.about-wrap .compact{margin-bottom:0}.about-wrap .wp-person{display:inline-block;vertical-align:top;margin-left:10px;padding-bottom:15px;height:70px;width:280px}.about-wrap .compact .wp-person{height:auto;width:180px;padding-bottom:0;margin-bottom:0}.about-wrap .wp-person .gravatar{float:right;margin:0 0 10px 10px;padding:1px;width:60px;height:60px}.about-wrap .compact .wp-person .gravatar{width:30px;height:30px}.about-wrap .wp-person .web{margin:6px 0 2px;font-size:16px;font-weight:400;line-height:2em;text-decoration:none}.about-wrap .wp-person .title{display:block}.about-wrap #wp-people-group-validators+p.wp-credits-list{margin-top:0}.about-wrap p.wp-credits-list a{white-space:nowrap}.freedoms-php .about-wrap ol{margin:40px 60px}.freedoms-php .about-wrap ol li{list-style-type:decimal;font-weight:600}.freedoms-php .about-wrap ol p{font-weight:400;margin:.6em 0}.freedoms-php .about-wrap .col 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.inline-svg.full-width{margin-bottom:60px}}@media only screen and (max-width:320px){.about-wrap .one-col .alignright{float:none;margin:0 auto}.about-wrap .one-col .alignright img{margin:0 0 1em}}
\ No newline at end of file
+.about-wrap{position:relative;margin:25px 20px 0 40px;max-width:1050px;font-size:15px}.about-wrap.full-width-layout{max-width:1200px}.about-wrap-content{max-width:1050px}.about-wrap .notice,.about-wrap div.error,.about-wrap div.updated{display:none!important}.about-wrap hr{border:0;height:0;margin:3em 0 0;border-top:1px solid rgba(0,0,0,.1)}.about-wrap img{margin:0;width:100%;height:auto;vertical-align:middle}.about-wrap figure{position:relative;margin:0}.about-wrap .feature-section figure img{margin-bottom:0}.about-wrap figcaption{position:absolute;bottom:0;width:100%;padding:40px 10px 15px;overflow:auto;box-sizing:border-box;background:linear-gradient(0deg,rgba(0,0,0,.7),rgba(0,0,0,.3) 60%,transparent);font-weight:600;text-shadow:0 0 5px rgba(0,0,0,.75)}.about-wrap .jetpack-video-wrapper{margin-bottom:0}.wp-badge{background:#0073aa url(../images/w-logo-white.png?ver=20160308) no-repeat;background-position:center 25px;background-size:80px 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p{font-weight:400;margin:.6em 0}.freedoms-php .about-wrap .col .freedoms-image{background-image:url(https://s.w.org/wp-content/themes/pub/wporg-main/images/freedoms-2x.png);background-size:100%;padding-top:100%}.freedoms-php .about-wrap .col:nth-of-type(2) .freedoms-image{background-position:100% 34%}.freedoms-php .about-wrap .col:nth-of-type(3) .freedoms-image{background-position:100% 66%}.freedoms-php .about-wrap .col:nth-of-type(4) .freedoms-image{background-position:100% 100%}@media screen and (max-width:782px){.about-wrap .two-col-text{column-count:1}.about-wrap .one-col .alignright{margin-right:20px;max-width:150px}.about-wrap .four-col .col,.about-wrap .three-col .col,.about-wrap .two-col .col{min-width:48%!important;max-width:48%!important;margin-right:0!important}.about-wrap .eight-col .col{min-width:24%!important}.about-wrap .eight-col img,.about-wrap .four-col img,.about-wrap .three-col img{display:block;margin:0 auto}.about-wrap 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img+h3{margin-top:1.25em}.about-wrap .under-the-hood .inline-svg{display:none}.about-wrap .inline-svg.full-width{margin-bottom:60px}}@media only screen and (max-width:320px){.about-wrap .one-col .alignright{float:none;margin:0 auto}.about-wrap .one-col .alignright img{margin:0 0 1em}}
\ No newline at end of file
diff --git a/wp-admin/css/about.css b/wp-admin/css/about.css
index 35d8a4691d..07ebffd90f 100644
--- a/wp-admin/css/about.css
+++ b/wp-admin/css/about.css
@@ -401,11 +401,13 @@
 
 /* Credits */
 
-.about-wrap h3.wp-people-group {
+.about-wrap h2.wp-people-group {
 	margin: 2.6em 0 1.33em;
 	padding: 0;
 	font-size: 16px;
 	line-height: inherit;
+	font-weight: 600;
+	text-align: left;
 }
 
 .about-wrap .wp-people-group {
diff --git a/wp-admin/css/about.min.css b/wp-admin/css/about.min.css
index c8303e678e..ea9a45eb6d 100644
--- a/wp-admin/css/about.min.css
+++ b/wp-admin/css/about.min.css
@@ -1,2 +1,2 @@
 /*! This file is auto-generated */
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\ No newline at end of file
diff --git a/wp-admin/freedoms.php b/wp-admin/freedoms.php
index 6fe3e690ac..dc81a5baf2 100644
--- a/wp-admin/freedoms.php
+++ b/wp-admin/freedoms.php
@@ -34,12 +34,12 @@ if ( $is_privacy_notice ) {
 
 <div class="wp-badge"><?php printf( __( 'Version %s' ), $display_version ); ?></div>
 
-<h2 class="nav-tab-wrapper wp-clearfix">
+<nav class="nav-tab-wrapper wp-clearfix" aria-label="<?php esc_attr_e( 'Secondary menu' ); ?>">
 	<a href="about.php" class="nav-tab"><?php _e( 'What&#8217;s New' ); ?></a>
 	<a href="credits.php" class="nav-tab"><?php _e( 'Credits' ); ?></a>
 	<a href="freedoms.php" class="nav-tab<?php echo $freedoms_class; ?>"><?php _e( 'Freedoms' ); ?></a>
 	<a href="freedoms.php?privacy-notice" class="nav-tab<?php echo $privacy_class; ?>"><?php _e( 'Privacy' ); ?></a>
-</h2>
+</nav>
 
 <?php if ( $is_privacy_notice ) : ?>
 
diff --git a/wp-admin/includes/ms.php b/wp-admin/includes/ms.php
index 9187d0d689..4cae500402 100644
--- a/wp-admin/includes/ms.php
+++ b/wp-admin/includes/ms.php
@@ -1130,9 +1130,9 @@ function network_edit_site_nav( $args = array() ) {
 	}
 
 	// All done!
-	echo '<h2 class="nav-tab-wrapper wp-clearfix">';
+	echo '<nav class="nav-tab-wrapper wp-clearfix" aria-label="' . esc_attr__( 'Secondary menu' ) . '">';
 	echo implode( '', $screen_links );
-	echo '</h2>';
+	echo '</nav>';
 }
 
 /**
diff --git a/wp-admin/nav-menus.php b/wp-admin/nav-menus.php
index 4051791949..5d336398ff 100644
--- a/wp-admin/nav-menus.php
+++ b/wp-admin/nav-menus.php
@@ -627,7 +627,7 @@ require_once( ABSPATH . 'wp-admin/admin-header.php' );
 
 	<hr class="wp-header-end">
 
-	<h2 class="nav-tab-wrapper wp-clearfix">
+	<nav class="nav-tab-wrapper wp-clearfix" aria-label="<?php esc_attr_e( 'Secondary menu' ); ?>">
 		<a href="<?php echo admin_url( 'nav-menus.php' ); ?>" class="nav-tab<?php echo $nav_tab_active_class; ?>"><?php esc_html_e( 'Edit Menus' ); ?></a>
 		<?php
 		if ( $num_locations && $menu_count ) {
@@ -640,7 +640,7 @@ require_once( ABSPATH . 'wp-admin/admin-header.php' );
 			<?php
 		}
 		?>
-	</h2>
+	</nav>
 	<?php
 	foreach ( $messages as $message ) :
 		echo $message . "\n";
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 7a3166c791..03f0b9eceb 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -13,7 +13,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '5.2-alpha-44904';
+$wp_version = '5.2-alpha-44905';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.