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Toolbar: Allow 0 as a value for the `tabindex` property of a menu item. 

To enhance accessibility for items without a link you can now define `tabindex="0"`, which makes descendant dropdowns accessible.

Props joedolson, afercia, ocean90.
Fixes #32495.
Built from https://develop.svn.wordpress.org/trunk@38035


git-svn-id: http://core.svn.wordpress.org/trunk@37976 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
Dominik Schilling 2016-07-12 11:18:30 +00:00
parent 70fa27a953
commit f160f2afd1
6 changed files with 12 additions and 7 deletions
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9
wp-includes/class-wp-admin-bar.php
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@ -477,8 +477,9 @@ class WP_Admin_Bar {
$is_parent = ! empty( $node->children );
$has_link = ! empty( $node->href );
$tabindex = isset( $node->meta['tabindex'] ) ? (int) $node->meta['tabindex'] : '';
$aria_attributes = $tabindex ? 'tabindex="' . $tabindex . '"' : '';
// Allow only numeric values, then casted to integers, and allow a tabindex value of `0` for a11y.
$tabindex = ( isset( $node->meta['tabindex'] ) && is_numeric( $node->meta['tabindex'] ) ) ? (int) $node->meta['tabindex'] : '';
$aria_attributes = ( '' !== $tabindex ) ? ' tabindex="' . $tabindex . '"' : '';
$menuclass = '';
@ -497,7 +498,7 @@ class WP_Admin_Bar {
<li id="<?php echo esc_attr( 'wp-admin-bar-' . $node->id ); ?>"<?php echo $menuclass; ?>><?php
if ( $has_link ):
?><a class="ab-item" <?php echo $aria_attributes; ?> href="<?php echo esc_url( $node->href ) ?>"<?php
?><a class="ab-item"<?php echo $aria_attributes; ?> href="<?php echo esc_url( $node->href ) ?>"<?php
if ( ! empty( $node->meta['onclick'] ) ) :
?> onclick="<?php echo esc_js( $node->meta['onclick'] ); ?>"<?php
endif;
@ -518,7 +519,7 @@ class WP_Admin_Bar {
endif;
?>><?php
else:
?><div class="ab-item ab-empty-item" <?php echo $aria_attributes;
?><div class="ab-item ab-empty-item"<?php echo $aria_attributes;
if ( ! empty( $node->meta['title'] ) ) :
?> title="<?php echo esc_attr( $node->meta['title'] ); ?>"<?php
endif;

2
wp-includes/css/admin-bar-rtl.css
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@ -286,6 +286,8 @@ html:lang(he-il) .rtl #wpadminbar * {
#wpadminbar .quicklinks .ab-sub-wrapper .menupop.hover > a,
#wpadminbar .quicklinks .menupop.hover ul li a:hover,
#wpadminbar .quicklinks .menupop.hover ul li a:focus,
#wpadminbar .quicklinks .menupop.hover ul li div[tabindex]:hover,
#wpadminbar .quicklinks .menupop.hover ul li div[tabindex]:focus,
#wpadminbar.nojs .quicklinks .menupop:hover ul li a:hover,
#wpadminbar.nojs .quicklinks .menupop:hover ul li a:focus,
#wpadminbar li:hover .ab-icon:before,

2
wp-includes/css/admin-bar-rtl.min.css vendored
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File diff suppressed because one or more lines are too long

2
wp-includes/css/admin-bar.css
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@ -286,6 +286,8 @@ html:lang(he-il) .rtl #wpadminbar * {
#wpadminbar .quicklinks .ab-sub-wrapper .menupop.hover > a,
#wpadminbar .quicklinks .menupop.hover ul li a:hover,
#wpadminbar .quicklinks .menupop.hover ul li a:focus,
#wpadminbar .quicklinks .menupop.hover ul li div[tabindex]:hover,
#wpadminbar .quicklinks .menupop.hover ul li div[tabindex]:focus,
#wpadminbar.nojs .quicklinks .menupop:hover ul li a:hover,
#wpadminbar.nojs .quicklinks .menupop:hover ul li a:focus,
#wpadminbar li:hover .ab-icon:before,

2
wp-includes/css/admin-bar.min.css vendored
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File diff suppressed because one or more lines are too long

2
wp-includes/version.php
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@ -4,7 +4,7 @@
*
* @global string $wp_version
*/
$wp_version = '4.6-beta2-38034';
$wp_version = '4.6-beta2-38035';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.