<?php

/* Bootstrap_Walker for Wordpress 
 * Author: George Huger, Illuminati Karate, Inc 
 * More Info: http://illuminatikarate.com/blog/bootstrap-walker-for-wordpress 
 * 
 * Formats a Wordpress menu to be used as a Bootstrap dropdown menu (http://getbootstrap.com). 
 * 
 * Specifically, it makes these changes to the normal Wordpress menu output to support Bootstrap: 
 * 
 *        - adds a 'dropdown' class to level-0 <li>'s which contain a dropdown 
 *         - adds a 'dropdown-submenu' class to level-1 <li>'s which contain a dropdown 
 *         - adds the 'dropdown-menu' class to level-1 and level-2 <ul>'s 
 * 
 * Supports menus up to 3 levels deep. 
 *  
 */

class Bootstrap_Walker extends Walker_Nav_Menu {
    
    /**
     * @see Walker::start_lvl()
     * @since 3.0.0
     *
     * @param string $output Passed by reference. Used to append additional content.
     * @param int $depth Depth of page. Used for padding.
     */
    function start_lvl( &$output, $depth = 0, $args = array() ) {
        $indent = str_repeat("\t", $depth);
        $output .= "\n$indent<ul role=\"menu\" class=\" dropdown-menu\">\n";
    }

    /**
     * @see Walker::start_el()
     * @since 3.0.0
     *
     * @param string $output Passed by reference. Used to append additional content.
     * @param object $item Menu item data object.
     * @param int $depth Depth of menu item. Used for padding.
     * @param int $current_page Menu item ID.
     * @param object $args
     */

    function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
        $indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';

        /**
         * Dividers, Headers or Disabled
         * =============================
         * Determine whether the item is a Divider, Header, Disabled or regular
         * menu item. To prevent errors we use the strcasecmp() function to so a
         * comparison that is not case sensitive. The strcasecmp() function returns
         * a 0 if the strings are equal.
         */
        if (strcasecmp($item->attr_title, 'divider') == 0 && $depth === 1) {
            $output .= $indent . '<li role="presentation" class="divider">';
        } else if (strcasecmp($item->attr_title, 'dropdown-header') == 0 && $depth === 1) {
            $output .= $indent . '<li role="presentation" class="dropdown-header">' . esc_attr( $item->title );
        } else if (strcasecmp($item->attr_title, 'disabled') == 0) {
            $output .= $indent . '<li role="presentation" class="disabled"><a href="#">' . esc_attr( $item->title ) . '</a>';
        } 
                else {

            $class_names = $value = '';

            $classes = empty( $item->classes ) ? array() : (array) $item->classes;
            $classes[] = 'menu-item-' . $item->ID;

            $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) );
            
            if($args->has_children && $depth === 0) { $class_names .= ' dropdown'; }
                        elseif($args->has_children && $depth > 0) { $class_names .= ' dropdown-submenu'; }
            
            
            /*******************************************************************************/
            /*******************************************************************************/
            /*******************************************************************************/
            /************************ Start asalah mega menu options ***********************/
            /*******************************************************************************/
            /*******************************************************************************/
            /*******************************************************************************/ 
            $check_mega_menu = "";
            if($depth === 0 && $item->megamenu != ''){
                $class_names .= ' mega_menu';
            }else{
                $class_names .= ' default_menu';
            }

            if ($depth === 0 && $item->cols_nums ){
                $class_names .= ' '.$item->cols_nums;
            }

            if($depth === 1 && $item->menutitle != ''){
                $class_names .= ' menu_title';
            }

            if($depth > 0 && $item->columntype == "text") {
                $class_names .= ' text_mega_menu';
            }

            /*******************************************************************************/
            /*******************************************************************************/
            /*******************************************************************************/
            /************************  end asalah mega menu options  ***********************/
            /*******************************************************************************/
            /*******************************************************************************/
            /*******************************************************************************/

            if(in_array('current-menu-item', $classes)) { $class_names .= ' active'; }

            $class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';

            $id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args );
            $id = $id ? ' id="' . esc_attr( $id ) . '"' : '';

            $output .= $indent . '<li' . $id . $value . $class_names .'>';
            if($depth > 0 && $item->columntype == "text") {
                $output .= do_shortcode($item->text);;
            }else {
                $atts = array();
                $atts['title']  = '';
                            /*if(!empty($item->title)):
                                if(strpos($item->title, 'icon-') === 0):
                                    $atts['title'] = '<i class="' . $item->title . '"></i>';
                                endif;
                            else:
                                $atts['title'] = '';
                            endif;*/
                            
                $atts['target'] = ! empty( $item->target ) ? $item->target : '';
                $atts['rel']    = ! empty( $item->xfn ) ? $item->xfn : '';

                //If item has_children add atts to a
                if($args->has_children && $depth === 0) {
                    /* $atts['href'] = '#'; */
                    /* $atts['data-toggle'] = 'dropdown'; */
                                    $atts['href'] = ! empty( $item->url ) ? $item->url : '#';
                    $atts['data-hover'] = 'dropdown';
                    $atts['class'] = 'dropdown-toggle';
                } else {
                    $atts['href'] = ! empty( $item->url ) ? $item->url : '';
                }

                $atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args );

                $attributes = '';
                foreach ( $atts as $attr => $value ) {
                                if ( ! empty( $value ) ) {
                                    $value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
                                    
                                    if($value !== 'srp-icon'){
                                        $attributes .= ' ' . $attr . '="' . $value . '"';
                                    }
                                }
                }

                $item_output = $args->before;

                /*
                 * Glyphicons
                 * ===========
                 * Since the the menu item is NOT a Divider or Header we check the see
                 * if there is a value in the attr_title property. If the attr_title
                 * property is NOT null we apply it as the class name for the glyphicon.
                 */

                if(! empty( $item->attr_title )){
                                if( $item->title === 'srp-icon' ){
                                    $item_output .= '<a'. $attributes . '><i class=" ' . esc_attr( $item->attr_title ) . '"></i>';
                                }
                                else{
                                    $item_output .= '<a'. $attributes .'><i class=" ' . esc_attr( $item->attr_title ) . '"></i>';
                                }
                                
                } else {
                                $item_output .= '<a'. $attributes .'>';
                }
                
                if( $item->title === 'srp-icon' ){
                    $item_output .= $args->link_before . $args->link_after;
                }
                else{
                    $item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
                }
                            
                $item_output .= ($args->has_children && $depth === 0) ? ' </a>' : '</a>';
                $item_output .= $args->after;
                            
                $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
            }            
        }
    }

    /**
     * Traverse elements to create list from elements.
     *
     * Display one element if the element doesn't have any children otherwise,
     * display the element and its children. Will only traverse up to the max
     * depth and no ignore elements under that depth. 
     *
     * This method shouldn't be called directly, use the walk() method instead.
     *
     * @see Walker::start_el()
     * @since 2.5.0
     *
     * @param object $element Data object
     * @param array $children_elements List of elements to continue traversing.
     * @param int $max_depth Max depth to traverse.
     * @param int $depth Depth of current element.
     * @param array $args
     * @param string $output Passed by reference. Used to append additional content.
     * @return null Null on failure with no changes to parameters.
     */

    function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
        if ( !$element ) {
            return;
        }

        $id_field = $this->db_fields['id'];

        //display this element
        if ( is_object( $args[0] ) ) {
           $args[0]->has_children = ! empty( $children_elements[$element->$id_field] );
        }

        parent::display_element($element, $children_elements, $max_depth, $depth, $args, $output);
    }
} 



?>