diff options
Diffstat (limited to 'inc/bootstrap-wp-navwalker.php')
| -rw-r--r-- | inc/bootstrap-wp-navwalker.php | 223 |
1 files changed, 223 insertions, 0 deletions
diff --git a/inc/bootstrap-wp-navwalker.php b/inc/bootstrap-wp-navwalker.php new file mode 100644 index 0000000..d175e56 --- /dev/null +++ b/inc/bootstrap-wp-navwalker.php @@ -0,0 +1,223 @@ +<?php +/** +* +* Adapted from Edward McIntyre's wp_bootstrap_navwalker class. +* Removed support for glyphicon and added support for Font Awesome +* +*/ +/** + * Class Name: wp_bootstrap_navwalker + * GitHub URI: https://github.com/twittem/wp-bootstrap-navwalker + * 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. + * Version: 2.0.4 + * Author: Edward McIntyre - @twittem + * License: GPL-2.0+ + * License URI: http://www.gnu.org/licenses/gpl-2.0.txt + * @package understrap + */ +//exit if accessed directly +if(!defined('ABSPATH')) exit; + +class wp_bootstrap_navwalker 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 $depth Depth of page. Used for padding. + */ + public function start_lvl( &$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 $args + */ + public function start_el( &$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->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[] = 'nav-item menu-item-' . $item->ID; + + $class_names = join( ' ', apply_filters( 'nav_menu_css_class', array_filter( $classes ), $item, $args ) ); + + /* + if ( $args->has_children ) + $class_names .= ' dropdown'; + */ + + if($args->has_children && $depth === 0) { $class_names .= ' dropdown'; } elseif($args->has_children && $depth > 0) { $class_names .= ' dropdown-submenu'; } + + if ( in_array( 'current-menu-item', $classes ) ) + $class_names .= ' active'; + + // remove Font Awesome icon from classes array and save the icon + // we will add the icon back in via a <span> below so it aligns with + // the menu item + if ( in_array('fa', $classes)) { + $key = array_search('fa', $classes); + $icon = $classes[$key + 1]; + $class_names = str_replace($classes[$key+1], '', $class_names); + $class_names = str_replace($classes[$key], '', $class_names); + + } + + $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 .'>'; + + $atts = array(); + $atts['title'] = ! empty( $item->title ) ? $item->title : ''; + $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 ) { + if ( $args->has_children && $depth === 0 ) { + $atts['href'] = '#'; + $atts['data-toggle'] = '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 ); + $attributes .= ' ' . $attr . '="' . $value . '"'; + } + } + + $item_output = $args->before; + + // Font Awesome icons + if ( ! empty( $icon ) ) + $item_output .= '<a'. $attributes .'><span class="fa ' . esc_attr( $icon ) . '"></span> '; + else + $item_output .= '<a'. $attributes .'>'; + + $item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after; + $item_output .= ( $args->has_children && 0 === $depth ) ? ' <span class="caret"></span></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. + */ + public 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 ); + } + + /** + * Menu Fallback + * ============= + * If this function is assigned to the wp_nav_menu's fallback_cb variable + * and a manu has not been assigned to the theme location in the WordPress + * menu manager the function with display nothing to a non-logged in user, + * and will add a link to the WordPress menu manager if logged in as an admin. + * + * @param array $args passed from the wp_nav_menu function. + * + */ + public static function fallback( $args ) { + if ( current_user_can( 'manage_options' ) ) { + + extract( $args ); + + $fb_output = null; + + if ( $container ) { + $fb_output = '<' . $container; + + if ( $container_id ) + $fb_output .= ' id="' . $container_id . '"'; + + if ( $container_class ) + $fb_output .= ' class="' . $container_class . '"'; + + $fb_output .= '>'; + } + + $fb_output .= '<ul'; + + if ( $menu_id ) + $fb_output .= ' id="' . $menu_id . '"'; + + if ( $menu_class ) + $fb_output .= ' class="' . $menu_class . '"'; + + $fb_output .= '>'; + $fb_output .= '<li><a href="' . admin_url( 'nav-menus.php' ) . '">Add a menu</a></li>'; + $fb_output .= '</ul>'; + + if ( $container ) + $fb_output .= '</' . $container . '>'; + + echo $fb_output; + } + } +} |