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Extended Walker class for use with the Twitter Bootstrap toolkit Dropdown n-levels menus in Wordpress.
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| <?php | |
| /** | |
| * Extended Walker class for use with the | |
| * Twitter Bootstrap toolkit Dropdown menus in Wordpress. | |
| * Edited to support n-levels submenu. | |
| * @author johnmegahan https://gist.github.com/1597994, Emanuele 'Tex' Tessore https://gist.github.com/3765640 | |
| * @license CC BY 4.0 https://creativecommons.org/licenses/by/4.0/ | |
| */ | |
| class BootstrapNavMenuWalker extends Walker_Nav_Menu { | |
| function start_lvl( &$output, $depth ) { | |
| $indent = str_repeat( "\t", $depth ); | |
| $submenu = ($depth > 0) ? ' sub-menu' : ''; | |
| $output .= "\n$indent<ul class=\"dropdown-menu$submenu depth_$depth\">\n"; | |
| } | |
| function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) { | |
| $indent = ( $depth ) ? str_repeat( "\t", $depth ) : ''; | |
| $li_attributes = ''; | |
| $class_names = $value = ''; | |
| $classes = empty( $item->classes ) ? array() : (array) $item->classes; | |
| // managing divider: add divider class to an element to get a divider before it. | |
| $divider_class_position = array_search('divider', $classes); | |
| if($divider_class_position !== false){ | |
| $output .= "<li class=\"divider\"></li>\n"; | |
| unset($classes[$divider_class_position]); | |
| } | |
| $classes[] = ($args->has_children) ? 'dropdown' : ''; | |
| $classes[] = ($item->current || $item->current_item_ancestor) ? 'active' : ''; | |
| $classes[] = 'menu-item-' . $item->ID; | |
| if($depth && $args->has_children){ | |
| $classes[] = 'dropdown-submenu'; | |
| } | |
| $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) ); | |
| $class_names = ' class="' . esc_attr( $class_names ) . '"'; | |
| $id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args ); | |
| $id = strlen( $id ) ? ' id="' . esc_attr( $id ) . '"' : ''; | |
| $output .= $indent . '<li' . $id . $value . $class_names . $li_attributes . '>'; | |
| $attributes = ! empty( $item->attr_title ) ? ' title="' . esc_attr( $item->attr_title ) .'"' : ''; | |
| $attributes .= ! empty( $item->target ) ? ' target="' . esc_attr( $item->target ) .'"' : ''; | |
| $attributes .= ! empty( $item->xfn ) ? ' rel="' . esc_attr( $item->xfn ) .'"' : ''; | |
| $attributes .= ! empty( $item->url ) ? ' href="' . esc_attr( $item->url ) .'"' : ''; | |
| $attributes .= ($args->has_children) ? ' class="dropdown-toggle" data-toggle="dropdown"' : ''; | |
| $item_output = $args->before; | |
| $item_output .= '<a'. $attributes .'>'; | |
| $item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after; | |
| $item_output .= ($depth == 0 && $args->has_children) ? ' <b class="caret"></b></a>' : '</a>'; | |
| $item_output .= $args->after; | |
| $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args ); | |
| } | |
| function display_element( $element, &$children_elements, $max_depth, $depth=0, $args, &$output ) { | |
| //v($element); | |
| if ( !$element ) | |
| return; | |
| $id_field = $this->db_fields['id']; | |
| //display this element | |
| if ( is_array( $args[0] ) ) | |
| $args[0]['has_children'] = ! empty( $children_elements[$element->$id_field] ); | |
| else if ( is_object( $args[0] ) ) | |
| $args[0]->has_children = ! empty( $children_elements[$element->$id_field] ); | |
| $cb_args = array_merge( array(&$output, $element, $depth), $args); | |
| call_user_func_array(array(&$this, 'start_el'), $cb_args); | |
| $id = $element->$id_field; | |
| // descend only when the depth is right and there are childrens for this element | |
| if ( ($max_depth == 0 || $max_depth > $depth+1 ) && isset( $children_elements[$id]) ) { | |
| foreach( $children_elements[ $id ] as $child ){ | |
| if ( !isset($newlevel) ) { | |
| $newlevel = true; | |
| //start the child delimiter | |
| $cb_args = array_merge( array(&$output, $depth), $args); | |
| call_user_func_array(array(&$this, 'start_lvl'), $cb_args); | |
| } | |
| $this->display_element( $child, $children_elements, $max_depth, $depth + 1, $args, $output ); | |
| } | |
| unset( $children_elements[ $id ] ); | |
| } | |
| if ( isset($newlevel) && $newlevel ){ | |
| //end the child delimiter | |
| $cb_args = array_merge( array(&$output, $depth), $args); | |
| call_user_func_array(array(&$this, 'end_lvl'), $cb_args); | |
| } | |
| //end this element | |
| $cb_args = array_merge( array(&$output, $element, $depth), $args); | |
| call_user_func_array(array(&$this, 'end_el'), $cb_args); | |
| } | |
| } |
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| <div class="navbar navbar-fixed-top"> | |
| <div class="navbar-inner"> | |
| <div class="container"> | |
| <?php | |
| $args = array( | |
| 'theme_location' => 'top-bar', | |
| 'depth' => 0, | |
| 'container' => false, | |
| 'menu_class' => 'nav', | |
| 'walker' => new BootstrapNavMenuWalker() | |
| ); | |
| wp_nav_menu($args); | |
| ?> | |
| </div> | |
| </div> | |
| </div> |
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| /** | |
| * This code changes the default behavior of the navbar: | |
| * now the submenu pops in when the user rolls his mouse | |
| * over the parent level menu entry. | |
| * Many tanks to Hanzi for this idea and code! | |
| */ | |
| jQuery(document).ready(function($) { | |
| $('ul.nav li.dropdown, ul.nav li.dropdown-submenu').hover(function() { | |
| $(this).find(' > .dropdown-menu').stop(true, true).delay(200).fadeIn(); | |
| }, function() { | |
| $(this).find(' > .dropdown-menu').stop(true, true).delay(200).fadeOut(); | |
| }); | |
| }); |
@Danimal713 can you provide some information on what doesn't work for you?
im having trouble implementing the open-on-mouseover. i saved the contents in open-on-mouseover.js and called it under the bootstrap.js script in the footer.php and it doesnt work.
Line 9 of the Javascript should be
$(this).find(' > .dropdown-menu').stop(true, true).delay(200).fadeIn();not
$(this).find(' > .dropdown-menu, ').stop(true, true).delay(200).fadeIn();
How to manually assign "active" class to some page tabs added from Menus in admin panel? So when you are on child page of a menu nav item, Its should be highlighted all the way as well.
@LachlanArthur Thank you for your bughunting :)
Hi, It works but when I try below 768px resolution, it needs to be on click otherwise it does not work. How should I do it? Best regards,
Thank you so much! You are my save :)
WP 4.9 beta breaks the nav and shows empty a tags.
Also have to change container from false to ul.
No more menu id
Thank You so much for sharing this code
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It works perfect, thank you for sharing!