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Menus: Add filter to sub-menu class in nav menus.

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Add new filter `nav_menu_submenu_css_class` to the `Walker_Nav_Menu::start_el()` method, allowing themers to modify the sub menu classes output by `wp_nav_menu()`.

Props: csloisel, darthaud, raisonon.
Fixes: #36163.


git-svn-id: https://develop.svn.wordpress.org/trunk@40537 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Peter Wilson 2017-04-23 07:15:47 +00:00
parent ce8a915c06
commit 1345e33a21
1 changed files with 16 additions and 1 deletions
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17
src/wp-includes/class-walker-nav-menu.php
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@ -58,7 +58,22 @@ class Walker_Nav_Menu extends Walker {
$n = "\n";
}
$indent = str_repeat( $t, $depth );
$output .= "{$n}{$indent}<ul class=\"sub-menu\">{$n}";
/**
* Filters the CSS class(es) applied to a menu list element.
*
* @since 4.8.0
*
* @param array $classes The CSS classes that are applied to the menu `<ul>` element.
* @param stdClass $args An object of `wp_nav_menu()` arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$classes = array( 'sub-menu' );
$classes = apply_filters( 'nav_menu_submenu_css_class', $classes, $args, $depth );
$class_names = join( ' ', $classes );
$output .= "{$n}{$indent}<ul class='" . esc_attr( $class_names ) . "'>{$n}";
}
/**