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Menus: Allow themes and plugins to pass HTML attributes to various Nav Walker outputs.

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This introduces a new set of hooks that can be used to filter various HTML elements of the Nav Walker, in order to output the desired HTML attributes:

- List items: `nav_menu_item_attributes`
- Submenu `<ul>` element: `nav_menu_submenu_attributes`

Props davidwebca, danyk4, costdev, peterwilsoncc, audrasjb, oglekler.
Fixes #57140.



Built from https://develop.svn.wordpress.org/trunk@56067


git-svn-id: http://core.svn.wordpress.org/trunk@55579 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
audrasjb 2023-06-27 15:26:27 +00:00
parent b80a8763c7
commit b459be6a15
2 changed files with 65 additions and 15 deletions
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78
wp-includes/class-walker-nav-menu.php
View File

@ -73,9 +73,27 @@ class Walker_Nav_Menu extends Walker {
* @param int $depth Depth of menu item. Used for padding.
*/
$class_names = implode( ' ', apply_filters( 'nav_menu_submenu_css_class', $classes, $args, $depth ) );
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
$output .= "{$n}{$indent}<ul$class_names>{$n}";
$atts = array();
$atts['class'] = ! empty( $class_names ) ? $class_names : '';
/**
* Filters the HTML attributes applied to a menu list element.
*
* @since 6.3.0
*
* @param array $atts {
* The HTML attributes applied to the `<ul>` element, empty strings are ignored.
*
* @type string $class HTML CSS class attribute.
* }
* @param stdClass $args An object of `wp_nav_menu()` arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$atts = apply_filters( 'nav_menu_submenu_attributes', $atts, $args, $depth );
$attributes = $this->build_atts( $atts );
$output .= "{$n}{$indent}<ul{$attributes}>{$n}";
}
/**
@ -156,7 +174,6 @@ class Walker_Nav_Menu extends Walker {
* @param int $depth Depth of menu item. Used for padding.
*/
$class_names = implode( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $menu_item, $args, $depth ) );
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
/**
* Filters the ID attribute applied to a menu item's list item element.
@ -170,9 +187,30 @@ class Walker_Nav_Menu extends Walker {
* @param int $depth Depth of menu item. Used for padding.
*/
$id = apply_filters( 'nav_menu_item_id', 'menu-item-' . $menu_item->ID, $menu_item, $args, $depth );
$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
$output .= $indent . '<li' . $id . $class_names . '>';
$li_atts = array();
$li_atts['id'] = ! empty( $id ) ? $id : '';
$li_atts['class'] = ! empty( $class_names ) ? $class_names : '';
/**
* Filters the HTML attributes applied to a menu's list item element.
*
* @since 6.3.0
*
* @param array $li_atts {
* The HTML attributes applied to the menu item's `<li>` element, empty strings are ignored.
*
* @type string $class HTML CSS class attribute.
* @type string $id HTML id attribute.
* }
* @param WP_Post $menu_item The current menu item object.
* @param stdClass $args An object of wp_nav_menu() arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$li_atts = apply_filters( 'nav_menu_item_attributes', $li_atts, $menu_item, $args, $depth );
$li_attributes = $this->build_atts( $li_atts );
$output .= $indent . '<li' . $li_attributes . '>';
$atts = array();
$atts['title'] = ! empty( $menu_item->attr_title ) ? $menu_item->attr_title : '';
@ -214,15 +252,8 @@ class Walker_Nav_Menu extends Walker {
* @param stdClass $args An object of wp_nav_menu() arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$atts = apply_filters( 'nav_menu_link_attributes', $atts, $menu_item, $args, $depth );
$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( is_scalar( $value ) && '' !== $value && false !== $value ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= ' ' . $attr . '="' . $value . '"';
}
}
$atts = apply_filters( 'nav_menu_link_attributes', $atts, $menu_item, $args, $depth );
$attributes = $this->build_atts( $atts );
/** This filter is documented in wp-includes/post-template.php */
$title = apply_filters( 'the_title', $menu_item->title, $menu_item->ID );
@ -286,4 +317,23 @@ class Walker_Nav_Menu extends Walker {
$output .= "</li>{$n}";
}
/**
* Builds a string of HTML attributes from an array of key/value pairs.
* Empty values are ignored.
*
* @since 6.3.0
*
* @param array $atts Optional. An array of HTML attribute key/value pairs. Default empty array.
* @return string A string of HTML attributes.
*/
protected function build_atts( $atts = array() ) {
$attribute_string = '';
foreach ( $atts as $attr => $value ) {
if ( false !== $value && '' !== $value && is_scalar( $value ) ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attribute_string .= ' ' . $attr . '="' . $value . '"';
}
}
return $attribute_string;
}
}

2
wp-includes/version.php
View File

@ -16,7 +16,7 @@
*
* @global string $wp_version
*/
$wp_version = '6.3-alpha-56066';
$wp_version = '6.3-alpha-56067';
/**
* Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.