Category Walker for pure.css

Pure_Pure_Category_Walker.php

class Pure_Category_Walker extends Walker_Category {

    function start_lvl( &$output, $depth = 0, $args = array() ) {
         if ( 'list' != $args['style'] )
                 return;

         $indent = str_repeat("\t", $depth);
         $output .= "$indent<ul class='pure-menu-children'>\n";
     }

    function start_el( &$output, $category, $depth = 0, $args = array(), $id = 0 ) {
        extract($args);
        $cat_name = esc_attr( $category->name );
        $cat_name = apply_filters( 'list_cats', $cat_name, $category );
    
        $termchildren = get_term_children( $category->term_id, $category->taxonomy );
        if(count($termchildren)>0){
            $aclass =  ' class="pure-menu-link" ';
        }
        $link = '<a '.$aclass.' href="' . esc_url( get_term_link($category) ) . '" ';
    
        if ( $use_desc_for_title == 0 || empty($category->description) )
            $link .= 'class="pure-menu-link" title="' . esc_attr( sprintf(__( 'View all posts filed under %s' ), $cat_name) ) . '"';
        else
            $link .= 'class="pure-menu-link" title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"';
            $link .= '>';
            $link .= $cat_name . '</a>';
        if ( !empty($show_count) )
            $link .= ' (' . intval($category->count) . ')';
                if ( 'list' == $args['style'] ) {
                        $output .= "\t<li";
                        $class = 'pure-menu-item cat-item-' . $category->term_id;
                        if ( !empty($current_category) ) {
                                $_current_category = get_term( $current_category, $category->taxonomy );
                                if ( $category->term_id == $current_category )
                                        $class .=  ' pure-menu-selected';
                                elseif ( $category->term_id == $_current_category->parent )
                                        $class .=  ' current-cat-parent';
                        }

                        if ( 'list' == $args['has_children'] ) {
                            $class .=  ' pure-menu-has-children';
                        }

                        $output .=  ' class="' . $class . '"';
                        $output .= ">$link\n";
                } else {
                        $output .= "\t$link<br />\n";
                }
        }
    }


    function end_lvl( &$output, $depth = 0, $args = array() ) {
             if ( 'list' != $args['style'] )
                     return;

             $indent = str_repeat("\t", $depth);
             $output .= "$indent</ul>\n";
    }