[gnome-web-www: 24/68] Add a walker nav class to use Wordpress menus with Bootstrap navigation
- From: Tom Tryfonidis <tomtryf src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gnome-web-www: 24/68] Add a walker nav class to use Wordpress menus with Bootstrap navigation
- Date: Tue, 24 Jan 2017 15:49:13 +0000 (UTC)
commit 386aec3955170a56c52a75ace3aa25a2e06bdd4a
Author: Tom Tryfonidis <tomtryf gnome org>
Date: Mon Jan 9 16:45:26 2017 +0200
Add a walker nav class to use Wordpress menus with Bootstrap navigation
theme/functions.php | 10 ++
theme/lib/wp-bootstrap-navwalker.php | 220 ++++++++++++++++++++++++++++++++++
2 files changed, 230 insertions(+), 0 deletions(-)
---
diff --git a/theme/functions.php b/theme/functions.php
index ef347d8..e86f12a 100644
--- a/theme/functions.php
+++ b/theme/functions.php
@@ -540,3 +540,13 @@ function custom_mimes_types ($existing_mimes) {
return $existing_mimes;
}
+
+/*
+ * Bootstrap Walker for the menu
+ */
+
+require_once('lib/wp-bootstrap-navwalker.php');
+
+register_nav_menus( array(
+ 'primary' => 'Navbar Menu', 'grass',
+) );
diff --git a/theme/lib/wp-bootstrap-navwalker.php b/theme/lib/wp-bootstrap-navwalker.php
new file mode 100644
index 0000000..36b770d
--- /dev/null
+++ b/theme/lib/wp-bootstrap-navwalker.php
@@ -0,0 +1,220 @@
+<?php
+/**
+ * WP Bootstrap Navwalker
+ *
+ * @package WP-Bootstrap-Navwalker
+ */
+
+/*
+ * Class Name: WP_Bootstrap_Navwalker
+ * Plugin Name: WP Bootstrap Navwalker
+ * Plugin URI: https://github.com/wp-bootstrap/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.
+ * Author: Edward McIntyre - @twittem, WP Bootstrap
+ * Version: 2.0.5
+ * Author URI: https://github.com/wp-bootstrap
+ * GitHub Plugin URI: https://github.com/wp-bootstrap/wp-bootstrap-navwalker
+ * GitHub Branch: master
+ * License: GPL-3.0+
+ * License URI: http://www.gnu.org/licenses/gpl-3.0.txt
+*/
+
+/* Check if Class Exists. */
+if ( ! class_exists( 'WP_Bootstrap_Navwalker' ) ) {
+ /**
+ * WP_Bootstrap_Navwalker class.
+ *
+ * @extends Walker_Nav_Menu
+ */
+ class WP_Bootstrap_Navwalker extends Walker_Nav_Menu {
+
+ /**
+ * Start Level.
+ *
+ * @see Walker::start_lvl()
+ * @since 3.0.0
+ *
+ * @access public
+ * @param mixed $output Passed by reference. Used to append additional content.
+ * @param int $depth (default: 0) Depth of page. Used for padding.
+ * @param array $args (default: array()) Arguments.
+ * @return void
+ */
+ public function start_lvl( &$output, $depth = 0, $args = array() ) {
+ $indent = str_repeat( "\t", $depth );
+ $output .= "\n$indent<ul role=\"menu\" class=\" dropdown-menu\" >\n";
+ }
+
+ /**
+ * Start El.
+ *
+ * @see Walker::start_el()
+ * @since 3.0.0
+ *
+ * @access public
+ * @param mixed $output Passed by reference. Used to append additional content.
+ * @param mixed $item Menu item data object.
+ * @param int $depth (default: 0) Depth of menu item. Used for padding.
+ * @param array $args (default: array()) Arguments.
+ * @param int $id (default: 0) Menu item ID.
+ * @return void
+ */
+ public function start_el( &$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 ( 0 === strcasecmp( $item->attr_title, 'divider' ) && 1 === $depth ) {
+ $output .= $indent . '<li role="presentation" class="divider">';
+ } elseif ( 0 === strcasecmp( $item->title, 'divider' ) && 1 === $depth ) {
+ $output .= $indent . '<li role="presentation" class="divider">';
+ } elseif ( 0 === strcasecmp( $item->attr_title, 'dropdown-header' ) && 1 === $depth )
{
+ $output .= $indent . '<li role="presentation" class="dropdown-header">' .
esc_attr( $item->title );
+ } elseif ( 0 === strcasecmp( $item->attr_title, 'disabled' ) ) {
+ $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 ) {
+ $class_names .= ' dropdown'; }
+ if ( in_array( 'current-menu-item', $classes, true ) ) {
+ $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 itemscope="itemscope"
itemtype="https://www.schema.org/SiteNavigationElement";' . $id . $value . $class_names . '>';
+ $atts = array();
+
+ if ( empty( $item->attr_title ) ) {
+ $atts['title'] = ! empty( $item->title ) ? strip_tags(
$item->title ) : '';
+ } else {
+ $atts['title'] = $item->attr_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 && 0 === $depth ) {
+ $atts['href'] = '#';
+ $atts['data-toggle'] = 'dropdown';
+ $atts['class'] = 'dropdown-toggle';
+ $atts['aria-haspopup'] = 'true';
+ } 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;
+
+ /*
+ * Glyphicons/Font-Awesome
+ * ===========
+ * 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 ) ) :
+ $pos = strpos( esc_attr( $item->attr_title ),
'glyphicon' );
+ if ( false !== $pos ) :
+ $item_output .= '<a' . $attributes . '><span class="glyphicon
' . esc_attr( $item->attr_title ) . '"></span> ';
+ else :
+ $item_output .= '<a' . $attributes .
'><i class="fa ' . esc_attr( $item->attr_title ) . '"></i> ';
+ endif;
+ else :
+ $item_output .= '<a' . $attributes . '>';
+ endif;
+ $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
+ *
+ * @access public
+ * @param mixed $element Data object.
+ * @param mixed $children_elements List of elements to continue traversing.
+ * @param mixed $max_depth Max depth to traverse.
+ * @param mixed $depth Depth of current element.
+ * @param mixed $args Arguments.
+ * @param mixed $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 menu 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( 'edit_theme_options' ) ) {
+
+ /* Get Arguments. */
+ $container = $args['container'];
+ $container_id = $args['container_id'];
+ $container_class = $args['container_class'];
+ $menu_class = $args['menu_class'];
+ $menu_id = $args['menu_id'];
+
+ if ( $container ) {
+ echo '<' . esc_attr( $container );
+ if ( $container_id ) {
+ echo ' id="' . esc_attr( $container_id ) . '"';
+ }
+ if ( $container_class ) {
+ echo ' class="' . sanitize_html_class( $container_class ) .
'"'; }
+ echo '>';
+ }
+ echo '<ul';
+ if ( $menu_id ) {
+ echo ' id="' . esc_attr( $menu_id ) . '"'; }
+ if ( $menu_class ) {
+ echo ' class="' . esc_attr( $menu_class ) . '"'; }
+ echo '>';
+ echo '<li><a href="' . esc_url( admin_url( 'nav-menus.php' ) ) . '"
title="">' . esc_attr( 'Add a menu', '' ) . '</a></li>';
+ echo '</ul>';
+ if ( $container ) {
+ echo '</' . esc_attr( $container ) . '>'; }
+ }
+ }
+ }
+}
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