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36163 - Nav menu walker start level class name filter #1

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36163 - Nav menu walker start level class name filter #1

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a9f3598
Adding filter on submenu classes
Mar 8, 2017
649e796
Adding docblock
Mar 8, 2017
b04396c
Changing @since version
Mar 8, 2017
2dcc725
Changing filter name
Mar 8, 2017
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18 changes: 16 additions & 2 deletions src/wp-includes/class-walker-nav-menu.php
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Original file line number Diff line number Diff line change
Expand Up @@ -57,8 +57,22 @@ public function start_lvl( &$output, $depth = 0, $args = array() ) {
$t = "\t";
$n = "\n";
}
$indent = str_repeat( $t, $depth );
$output .= "{$n}{$indent}<ul class=\"sub-menu\">{$n}";
$indent = str_repeat( $t, $depth );
$classes = array( 'sub-menu' );

/**
* Filters the CSS class(es) applied to a submenu container element.
*
* @since 4.8.0
*
* @param array $classes The CSS classes that are applied to the submenu item's `<ul>` element.
* @param stdClass $args An object of wp_nav_menu() arguments.
* @param int $depth Depth of menu item. Used for padding.
*/
$class_names = join( ' ', apply_filters( 'nav_menu_submenu_css_class', array_filter( $classes ), $args, $depth ) );
$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';

$output .= "{$n}{$indent}<ul" . $class_names . ">{$n}";
}

/**
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