menu.php 11.3 KB
<?php
class WPDocs_Walker_Nav_Menu extends Walker_Nav_Menu {

    /**
     * Starts the list before the elements are added.
     *
     * Adds classes to the unordered list sub-menus.
     *
     * @param string $output Passed by reference. Used to append additional content.
     * @param int    $depth  Depth of menu item. Used for padding.
     * @param array  $args   An array of arguments. @see wp_nav_menu()
     */
    function start_lvl( &$output, $depth = 0, $args = array() ) {
        // Depth-dependent classes.
        $indent = ( $depth > 0  ? str_repeat( "\t", $depth ) : '' ); // code indent
        $display_depth = ( $depth + 1); // because it counts the first submenu as 0
        $classes = array(
            'wsmenu-submenu',
            ( $display_depth % 2  ? 'menu-odd' : 'menu-even' ),
            ( $display_depth >=2 ? 'wsmenu-submenu-sub' : '' ),
            'menu-depth-' . $display_depth
        );
        $class_names = implode( ' ', $classes );

        // Build HTML for output.
        $output .= "\n" . $indent . '<ul class="' . $class_names . '">' . "\n";
    }

    /**
     * Start the element output.
     *
     * Adds main/sub-classes to the list items and links.
     *
     * @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 array  $args   An array of arguments. @see wp_nav_menu()
     * @param int    $id     Current item ID.
     */
    function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
        global $wp_query;
        $indent = ( $depth > 0 ? str_repeat( "\t", $depth ) : '' ); // code indent

        // Depth-dependent classes.
        $depth_classes = array(
            ( $depth == 0 ? 'menu-item' : 'sub-menu' ),
            ( $depth >=2 ? 'sub-sub-menu-item' : '' ),
            ( $depth % 2 ? 'menu-item-odd' : 'menu-item-even' ),
            'menu-item-depth-' . $depth
        );
        $depth_class_names = esc_attr( implode( ' ', $depth_classes ) );

        // Passed classes.
        $classes = empty( $item->classes ) ? array() : (array) $item->classes;
        $class_names = esc_attr( implode( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item ) ) );

        // Build HTML.
        $output .= $indent . '<li id="nav-menu-item-'. $item->ID . '" class="' . $depth_class_names . ' ' . $class_names . '">';

        // Link 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 .= ' class="nav-link ' . ( $depth > 0 ? 'sub-menu-link' : 'main-menu-link' ) . '"';

        // Build HTML output and pass through the proper filter.
        $item_output = sprintf( '%1$s<a%2$s>%3$s%4$s%5$s<span></span></a>%6$s',
            $args->before,
            $attributes,
            $args->link_before,
            apply_filters( 'the_title', $item->title, $item->ID ),
            $args->link_after,
            $args->after
        );
        $output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
    }
}


function get_hansel_and_gretel_breadcrumbs()
{
    // Set variables for later use

    $home_link        = home_url('/');
    $home_text        = __( 'Home' );
    $link_before      = '';
    $link_after       = '';
    $link_attr        = ' rel="v:url" property="v:title"';
    $link             = $link_before . '<a' . $link_attr . ' href="%1$s">%2$s</a>' . $link_after;
    $delimiter        = '<span class="delimiter"> / </span>';              // Delimiter between crumbs
    $before           = '<span class="current">'; // Tag before the current crumb
    $after            = '</span>';                // Tag after the current crumb
    $page_addon       = '';                       // Adds the page number if the query is paged
    $breadcrumb_trail = '';
    $category_links   = '';

    /** 
     * Set our own $wp_the_query variable. Do not use the global variable version due to 
     * reliability
     */
    $wp_the_query   = $GLOBALS['wp_the_query'];
    $queried_object = $wp_the_query->get_queried_object();

    // Handle single post requests which includes single pages, posts and attatchments
    if ( is_singular() ) 
    {
        /** 
         * Set our own $post variable. Do not use the global variable version due to 
         * reliability. We will set $post_object variable to $GLOBALS['wp_the_query']
         */
        $post_object = sanitize_post( $queried_object );

        // Set variables 
        $title          = apply_filters( 'the_title', $post_object->post_title );
        $parent         = $post_object->post_parent;
        $post_type      = $post_object->post_type;
        $post_id        = $post_object->ID;
        $post_link      = $before . $title . $after;
        $parent_string  = '';
        $post_type_link = '';

        if ( 'post' === $post_type ) 
        {
            // Get the post categories
            $categories = get_the_category( $post_id );
            if ( $categories ) {
                // Lets grab the first category
                $category  = $categories[0];

                $category_links = get_category_parents( $category, true, $delimiter );
                $category_links = str_replace( '<a',   $link_before . '<a' . $link_attr, $category_links );
                $category_links = str_replace( '</a>', '</a>' . $link_after,             $category_links );
            }
        }

        if ( !in_array( $post_type, ['post', 'page', 'attachment'] ) )
        {
            $post_type_object = get_post_type_object( $post_type );
            $archive_link     = esc_url( get_post_type_archive_link( $post_type ) );

            $post_type_link   = sprintf( $link, $archive_link, $post_type_object->labels->singular_name );
        }

        // Get post parents if $parent !== 0
        if ( 0 !== $parent ) 
        {
            $parent_links = [];
            while ( $parent ) {
                $post_parent = get_post( $parent );

                $parent_links[] = sprintf( $link, esc_url( get_permalink( $post_parent->ID ) ), get_the_title( $post_parent->ID ) );

                $parent = $post_parent->post_parent;
            }

            $parent_links = array_reverse( $parent_links );

            $parent_string = implode( $delimiter, $parent_links );
        }

        // Lets build the breadcrumb trail
        if ( $parent_string ) {
            $breadcrumb_trail = $parent_string . $delimiter . $post_link;
        } else {
            $breadcrumb_trail = $post_link;
        }

        if ( $post_type_link )
            $breadcrumb_trail = $post_type_link . $delimiter . $breadcrumb_trail;

        if ( $category_links )
            $breadcrumb_trail = $category_links . $breadcrumb_trail;
    }

    // Handle archives which includes category-, tag-, taxonomy-, date-, custom post type archives and author archives
    if( is_archive() )
    {
        if (    is_category()
             || is_tag()
             || is_tax()
        ) {
            // Set the variables for this section
            $term_object        = get_term( $queried_object );
            $taxonomy           = $term_object->taxonomy;
            $term_id            = $term_object->term_id;
            $term_name          = $term_object->name;
            $term_parent        = $term_object->parent;
            $taxonomy_object    = get_taxonomy( $taxonomy );
            $current_term_link  = $before . $taxonomy_object->labels->singular_name . ': ' . $term_name . $after;
            $parent_term_string = '';

            if ( 0 !== $term_parent )
            {
                // Get all the current term ancestors
                $parent_term_links = [];
                while ( $term_parent ) {
                    $term = get_term( $term_parent, $taxonomy );

                    $parent_term_links[] = sprintf( $link, esc_url( get_term_link( $term ) ), $term->name );

                    $term_parent = $term->parent;
                }

                $parent_term_links  = array_reverse( $parent_term_links );
                $parent_term_string = implode( $delimiter, $parent_term_links );
            }

            if ( $parent_term_string ) {
                $breadcrumb_trail = $parent_term_string . $delimiter . $current_term_link;
            } else {
                $breadcrumb_trail = $current_term_link;
            }

        } elseif ( is_author() ) {

            $breadcrumb_trail = __( 'Author archive for ') .  $before . $queried_object->data->display_name . $after;

        } elseif ( is_date() ) {
            // Set default variables
            $year     = $wp_the_query->query_vars['year'];
            $monthnum = $wp_the_query->query_vars['monthnum'];
            $day      = $wp_the_query->query_vars['day'];

            // Get the month name if $monthnum has a value
            if ( $monthnum ) {
                $date_time  = DateTime::createFromFormat( '!m', $monthnum );
                $month_name = $date_time->format( 'F' );
            }

            if ( is_year() ) {

                $breadcrumb_trail = $before . $year . $after;

            } elseif( is_month() ) {

                $year_link        = sprintf( $link, esc_url( get_year_link( $year ) ), $year );

                $breadcrumb_trail = $year_link . $delimiter . $before . $month_name . $after;

            } elseif( is_day() ) {

                $year_link        = sprintf( $link, esc_url( get_year_link( $year ) ),             $year       );
                $month_link       = sprintf( $link, esc_url( get_month_link( $year, $monthnum ) ), $month_name );

                $breadcrumb_trail = $year_link . $delimiter . $month_link . $delimiter . $before . $day . $after;
            }

        } elseif ( is_post_type_archive() ) {

            $post_type        = $wp_the_query->query_vars['post_type'];
            $post_type_object = get_post_type_object( $post_type );

            $breadcrumb_trail = $before . $post_type_object->labels->singular_name . $after;

        }
    }   

    // Handle the search page
    if ( is_search() ) {
        $breadcrumb_trail = __( 'Search query for: ' ) . $before . get_search_query() . $after;
    }

    // Handle 404's
    if ( is_404() ) {
        $breadcrumb_trail = $before . __( 'Error 404' ) . $after;
    }

    // Handle paged pages
    if ( is_paged() ) {
        $current_page = get_query_var( 'paged' ) ? get_query_var( 'paged' ) : get_query_var( 'page' );
        $page_addon   = $before . sprintf( __( ' ( Page %s )' ), number_format_i18n( $current_page ) ) . $after;
    }

    $breadcrumb_output_link  = '';
    $breadcrumb_output_link .= '<div class="breadcrumb">';
    if (    is_home()
         || is_front_page()
    ) {
        // Do not show breadcrumbs on page one of home and frontpage
        if ( is_paged() ) {
          
     
            $breadcrumb_output_link .= $page_addon;
        }
    } else {

        $breadcrumb_output_link .= $breadcrumb_trail;
        $breadcrumb_output_link .= $page_addon;
    }
    $breadcrumb_output_link .= '</div><!-- .breadcrumbs -->';

    return $breadcrumb_output_link;
}