nav-drop-multi-walker.php

<?php 
/*Drop Multi Nav Menu Walker*/
if(!class_exists('Drop_Multi_Nav_Walker')) {
	class Drop_Multi_Nav_Walker extends Walker_Nav_Menu {     
		/*This was taken from 320press WP-Bootstrap theme. No licensing restriction given, and it said it was free. */
		/* Skip private pages
		 */ 
		function skip( $item ) {
			$parent = is_parent_private($item->object_id);
			if($parent !== false) $page = $parent;
			else $page = $item->object_id;
			$private = get_post_meta($page, 'uc-private', true);
			if($private == 'admins' || $private == 'users' || $private == 'list'){
				return true;
			}
			else{
				return false;
			}
		}
		/* Start of the <ul> 
		 * 
		 * Note on $depth: Counterintuitively, $depth here means the "depth right before we start this menu".  
		 *                   So basically add one to what you'd expect it to be 
		 */         
		function start_lvl(&$output, $depth = 0, $args = array()) 
		{
			if(isset($args->with_search) && $args->with_search == true){
				add_filter('wp_nav_menu_items', 'search_menu_item', 1, 2);	
			}
			
			$tabs = str_repeat("\t", $depth); 
			// If we are about to start the first submenu, we need to give it a dropdown-menu class 
			if ($depth >= 0) { //really, level-1 or level-2, because $depth is misleading here (see note above) 
				$output .= "\n{$tabs}<ul class=\"dropdown-menu\">\n"; 
			} else { 
				$output .= "\n{$tabs}<ul>\n"; 
			} 	
			return;
		} 
	
		/* End of the <ul> 
		 * 
		 * Note on $depth: Counterintuitively, $depth here means the "depth right before we start this menu".  
		 *                   So basically add one to what you'd expect it to be 
		 */         
		function end_lvl(&$output, $depth = 0, $args = array())  
		{
			if ($depth == 0) { // This is actually the end of the level-1 submenu ($depth is misleading here too!) 
	
				// we don't have anything special for Bootstrap, so we'll just leave an HTML comment for now 
				$output .= '<!--.dropdown-->'; 
			} 
			$tabs = str_repeat("\t", $depth); 
			$output .= "\n{$tabs}</ul>\n"; 
			return; 
		}
	
		/* Output the <li> and the containing <a> 
		 * Note: $depth is "correct" at this level 
		 */         
		function start_el(&$output, $item, $depth = 0, $args = array(), $id = 0)  
		{    
			global $wp_query; 
    		if ( $this->skip( $item ) ) return;
			$indent = ( $depth ) ? str_repeat( "\t", $depth ) : ''; 
			$class_names = $value = ''; 
			$classes = empty( $item->classes ) ? array() : (array) $item->classes; 
	
			/* If this item has a dropdown menu, add the 'dropdown' class for Bootstrap */ 
			if($item->post_type == 'page') { //page has no classes..
				$classes[] = 'menu-item';
			}
			if ($item->hasChildren) { 
				$classes[] = 'dropdown'; 
				// level-1 menus also need the 'dropdown-submenu' class 
				if($depth > 0 ) { 
					$classes[] = 'dropdown-submenu'; 
				} 
			} 
	
			/* This is the stock Wordpress code that builds the <li> with all of its attributes */ 
			$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) ); 
			$class_names = ' class="' . esc_attr( $class_names ) . '"'; 
			$output .= $indent . '<li id="menu-item-'. $item->ID . '"' . $value . $class_names .'>';             
			$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( $item->xfn        ) .'"' : '';
			if($item->post_type == 'page') {
				$attributes .= ! empty( $item->guid )        ? ' href="'   . esc_attr( $item->guid       ) .'"' : '';
			} else {
				$attributes .= ! empty( $item->url )        ? ' href="'   . esc_attr( $item->url        ) .'"' : '';
			}
			
			$item_output = "";
			if($item->post_type == 'page') {
				if ($item->hasChildren) { 
					$item_output .= '<a'. $attributes .' class="dropdown-toggle" data-toggle="dropdown">'; 
				} else { 
					$item_output .= '<a'. $attributes .'>'; 
				} 
				$item_output .= apply_filters('the_title', $item->post_title, $item->ID);
				if ($item->hasChildren && $depth == 0) { 
					$item_output .= '<b class="caret"></b></a>'; 
				} else { 
					$item_output .= '</a>'; 
				} 
				
			} else {
				$item_output = $args->before; 
	
				/* If this item has a dropdown menu, make clicking on this link toggle it */ 
				if ($item->hasChildren) { 
					$item_output .= '<a'. $attributes .' class="dropdown-toggle" data-toggle="dropdown">'; 
				} else { 
					$item_output .= '<a'. $attributes .'>'; 
				} 
				//var_dump($item);
				
				$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after; 
		
				/* Output the actual caret for the user to click on to toggle the menu */             
				
				if ($item->hasChildren && $depth == 0) { 
					$item_output .= '<b class="caret"></b></a>'; 
				} else { 
					$item_output .= '</a>'; 
				} 
				$item_output .= $args->after; 
			}
			$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args ); 
			return; 
		}
	
		/* Close the <li> 
		 * Note: the <a> is already closed 
		 * Note 2: $depth is "correct" at this level 
		 */         
		function end_el (&$output, $item, $depth = 0, $args = array())
		{
    		if ( $this->skip( $item ) ) return;
			$output .= '</li>'; 
			return;
		} 
	
		/* Add a 'hasChildren' property to the item 
		 * Code from: http://wordpress.org/support/topic/how-do-i-know-if-a-menu-item-has-children-or-is-a-leaf#post-3139633  
		 */ 
		function display_element ($element, &$children_elements, $max_depth, $depth = 0, $args, &$output) 
		{ 
		/*	if($element->post_type == 'page' && !isset($children_elements[$element->ID])) {
				
				$children = get_children(array('post_parent' => $element->ID, 'numberposts' => -1, 'post_type' => 'page'));
				$children_elements[$element->ID] = $children;
			}*/
			// check whether this item has children, and set $item->hasChildren accordingly 
			$element->hasChildren = isset($children_elements[$element->ID]) && !empty($children_elements[$element->ID]); 
			
			//var_dump($children_elements);
//		var_dump($element);
			/*if($element->hasChildren) {
				$element2 = $children_elements[$element->ID];
				$child2 = $children_elements[$element2->ID];
				$element2->hasChildren = isset($child2[$element2->ID]) && !empty($child2[$element2->ID]); 
			}*/
			// continue with normal behavior 
			return parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output); 
		}         
	}
}
?>