402 lines
7.1 KiB
PHP
402 lines
7.1 KiB
PHP
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<?php
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/**
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* Class Name: wp_bootstrap_navwalker
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* GitHub URI: https://github.com/twittem/wp-bootstrap-navwalker
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* Description: A custom WordPress nav walker class to implement the Bootstrap 3 navigation style in a custom theme using the WordPress built in menu manager.
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* Version: 2.0.4
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* Author: Edward McIntyre - @twittem
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* License: GPL-2.0+
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*/
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class Bootstrap_walker_Mobile extends Walker_Nav_Menu {
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/**
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* @see Walker::start_lvl()
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* @since 3.0.0
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*
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* @param string $output Passed by reference. Used to append additional content.
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* @param int $depth Depth of page. Used for padding.
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*/
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public function start_lvl( &$output, $depth = 0, $args = array() ) {
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$indent = str_repeat( "\t", $depth );
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$output .= "\n$indent<ul role=\"menu\" class=\"nav-dropdown-sm\">\n";
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}
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/**
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* @see Walker::start_el()
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* @since 3.0.0
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*
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* @param string $output Passed by reference. Used to append additional content.
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* @param object $item Menu item data object.
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* @param int $depth Depth of menu item. Used for padding.
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* @param int $current_page Menu item ID.
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* @param object $args
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*/
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public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
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$indent = ( $depth ) ? str_repeat( "\t", $depth ) : '';
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/**
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* Dividers, Headers or Disabled
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* =============================
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* Determine whether the item is a Divider, Header, Disabled or regular
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* menu item. To prevent errors we use the strcasecmp() function to so a
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* comparison that is not case sensitive. The strcasecmp() function returns
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* a 0 if the strings are equal.
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*/
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if ( strcasecmp( $item->attr_title, 'divider' ) == 0 && $depth === 1 ) {
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$output .= $indent . '<li role="presentation" class="divider">';
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} else if ( strcasecmp( $item->title, 'divider') == 0 && $depth === 1 ) {
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$output .= $indent . '<li role="presentation" class="divider">';
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} else if ( strcasecmp( $item->attr_title, 'dropdown-header') == 0 && $depth === 1 ) {
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$output .= $indent . '<li role="presentation" class="dropdown-header">' . esc_attr( $item->title );
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} else if ( strcasecmp($item->attr_title, 'disabled' ) == 0 ) {
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$output .= $indent . '<li role="presentation" class="disabled"><a href="#">' . esc_attr( $item->title ) . '</a>';
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} else {
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$class_names = $value = '';
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$classes = empty( $item->classes ) ? array() : (array) $item->classes;
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$classes[] = 'menu-item-' . $item->ID;
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$class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) );
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if ( $args->has_children )
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$class_names .= ' group/step-one';
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$class_names = $class_names ? ' class="' . esc_attr( $class_names ) . '"' : '';
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$id = apply_filters( 'nav_menu_item_id', 'menu-item-'. $item->ID, $item, $args );
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$id = $id ? ' id="' . esc_attr( $id ) . '"' : '';
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$output .= $indent . '<li' . $id . $value . $class_names .'>';
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$atts = array();
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$atts['title'] = ! empty( $item->title ) ? $item->title : '';
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$atts['target'] = ! empty( $item->target ) ? $item->target : '';
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$atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : '';
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// If item has_children add atts to a.
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if ( $args->has_children && $depth === 0 ) {
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$atts['href'] = ! empty( $item->url ) ? $item->url : '';
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$atts['class'] = 'has-dropdown nav-link nav-link-sm';
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}elseif( $depth == 0 ){
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$atts['href'] = ! empty( $item->url ) ? $item->url : '';
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$atts['class'] = 'nav-link nav-link-sm';
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} else {
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$atts['href'] = ! empty( $item->url ) ? $item->url : '';
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}
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$atts = apply_filters( 'nav_menu_link_attributes', $atts, $item, $args );
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$attributes = '';
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foreach ( $atts as $attr => $value ) {
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if ( ! empty( $value ) ) {
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$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
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$attributes .= ' ' . $attr . '="' . $value . '"';
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}
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}
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$item_output = $args->before;
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/*
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* Glyphicons
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* ===========
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* Since the the menu item is NOT a Divider or Header we check the see
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* if there is a value in the attr_title property. If the attr_title
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* property is NOT null we apply it as the class name for the glyphicon.
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*/
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if ( $args->has_children && 0 === $depth )
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$item_output .= '<a'. $attributes .'>'.$args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . '' . $args->link_after.'</a>';
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else
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$item_output .= '<a'. $attributes .'>'.$args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after.'</a>';
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$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
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}
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}
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/**
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* Traverse elements to create list from elements.
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*
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* Display one element if the element doesn't have any children otherwise,
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* display the element and its children. Will only traverse up to the max
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* depth and no ignore elements under that depth.
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*
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* This method shouldn't be called directly, use the walk() method instead.
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*
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* @see Walker::start_el()
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* @since 2.5.0
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*
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* @param object $element Data object
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* @param array $children_elements List of elements to continue traversing.
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* @param int $max_depth Max depth to traverse.
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* @param int $depth Depth of current element.
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* @param array $args
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* @param string $output Passed by reference. Used to append additional content.
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* @return null Null on failure with no changes to parameters.
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*/
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public function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
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if ( ! $element )
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return;
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$id_field = $this->db_fields['id'];
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// Display this element.
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if ( is_object( $args[0] ) )
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$args[0]->has_children = ! empty( $children_elements[ $element->$id_field ] );
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parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
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}
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/**
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* Menu Fallback
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* =============
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* If this function is assigned to the wp_nav_menu's fallback_cb variable
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* and a manu has not been assigned to the theme location in the WordPress
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* menu manager the function with display nothing to a non-logged in user,
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* and will add a link to the WordPress menu manager if logged in as an admin.
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*
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* @param array $args passed from the wp_nav_menu function.
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*
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*/
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public static function fallback( $args ) {
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if ( current_user_can( 'manage_options' ) ) {
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extract( $args );
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$fb_output = null;
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if ( $container ) {
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$fb_output = '<' . $container;
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if ( $container_id )
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$fb_output .= ' id="' . $container_id . '"';
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if ( $container_class )
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$fb_output .= ' class="' . $container_class . '"';
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$fb_output .= '>';
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}
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$fb_output .= '<ul';
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if ( $menu_id )
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$fb_output .= ' id="' . $menu_id . '"';
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if ( $menu_class )
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$fb_output .= ' class="' . $menu_class . '"';
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$fb_output .= '>';
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$fb_output .= '<li><a href="' . esc_url(admin_url( 'nav-menus.php' )) . '">Add a menu</a></li>';
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$fb_output .= '</ul>';
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if ( $container )
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$fb_output .= '</' . $container . '>';
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echo wp_kses($fb_output, true);
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}
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}
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}
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