260 lines
10 KiB
PHP
260 lines
10 KiB
PHP
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<?php
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namespace Upstudy\Navwalker;
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if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
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/**
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* WP Bootstrap Navwalker
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*
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* @package WP-Bootstrap-Navwalker
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*/
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/*
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* Class Name: Upstudy_NavWalker
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* Plugin Name: WP Bootstrap Navwalker
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* Plugin URI: https://github.com/wp-bootstrap/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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* Author: Edward McIntyre - @twittem, WP Bootstrap
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* Version: 2.0.5
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* Author URI: https://github.com/wp-bootstrap
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* GitHub Plugin URI: https://github.com/wp-bootstrap/wp-bootstrap-navwalker
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* GitHub Branch: master
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* License: GPL-3.0+
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* License URI: http://www.gnu.org/licenses/gpl-3.0.txt
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*/
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/**
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* Upstudy_NavWalker class.
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*
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* @extends Walker_Nav_Menu
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*/
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class Upstudy_NavWalker extends \Walker_Nav_Menu {
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/**
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* Start Level.
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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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* @access public
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* @param mixed $output Passed by reference. Used to append additional content.
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* @param int $depth (default: 0) Depth of page. Used for padding.
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* @param array $args (default: array()) Arguments.
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* @return void
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*/
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public function start_lvl( &$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=\" upstudy-dropdown-menu\" >\n";
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}
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/**
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* Start El.
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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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* @access public
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* @param mixed $output Passed by reference. Used to append additional content.
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* @param mixed $item Menu item data object.
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* @param int $depth (default: 0) Depth of menu item. Used for padding.
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* @param array $args (default: array()) Arguments.
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* @param int $id (default: 0) Menu item ID.
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* @return void
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*/
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public function start_el( &$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 ( 0 === strcasecmp( $item->attr_title, 'divider' ) && 1 === $depth ) {
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$output .= $indent . '<li role="presentation" class="divider">';
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} elseif ( 0 === strcasecmp( $item->title, 'divider' ) && 1 === $depth ) {
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$output .= $indent . '<li role="presentation" class="divider">';
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} elseif ( 0 === strcasecmp( $item->attr_title, 'dropdown-header' ) && 1 === $depth ) {
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$output .= $indent . '<li role="presentation" class="dropdown-header">' . esc_attr( $item->title );
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} elseif ( 0 === strcasecmp( $item->attr_title, 'disabled' ) ) {
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$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[] = 'nav-item 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 && $depth === 0 ) :
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$class_names .= ' dropdown';
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elseif ( $args->has_children && $depth > 0 ) :
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$class_names .= ' upstudy-dropdown-submenu';
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endif;
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$upstudy_mega_menu = $this->megaMenuAsSubMenu($item, $depth);
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if ( $upstudy_mega_menu ) :
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$args->has_children = true;
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$class_names .= ' active-mega-menu menu-item-has-children dropdown';
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endif;
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if ( $item->upstudy_menu_alignment ) :
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$class_names .= ' menu-align-' . $item->upstudy_menu_alignment;
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endif;
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if ( in_array( 'current-menu-item', $classes, true ) ) :
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$class_names .= ' active';
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endif;
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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 itemscope="itemscope" itemtype="https://www.schema.org/SiteNavigationElement"' . $id . $value . $class_names . '>';
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$atts = array();
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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 && 0 === $depth ) :
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$atts['href'] = ! empty( $item->url ) ? $item->url : '';
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// $atts['class'] = 'dropdown-toggle';
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$atts['aria-haspopup'] = 'true';
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else :
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$atts['href'] = ! empty( $item->url ) ? $item->url : '';
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endif;
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$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 . '="' . $value . '"';
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endif;
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endforeach;
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$item_output = $args->before;
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// $item_output = '<span class="upstudy-desktop-icon"><i class="dt-icon-tumblr" aria-hidden="true"></i></span>';
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/*
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* Glyphicons/Font-Awesome
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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 ( ! empty( $item->attr_title ) ) :
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$pos = strpos( esc_attr( $item->attr_title ), 'glyphicon' );
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if ( false !== $pos ) :
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$item_output .= '<a' . $attributes . '><span class="glyphicon ' . esc_attr( $item->attr_title ) . '" aria-hidden="true"></span> ';
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else :
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$item_output .= '<a' . $attributes . '><i class="fa ' . esc_attr( $item->attr_title ) . '" aria-hidden="true"></i> ';
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endif;
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else :
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$item_output .= '<a class="nav-link"' . $attributes . '>';
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endif;
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$item_output .= $args->link_before . apply_filters( 'the_title', $item->title, $item->ID ) . $args->link_after;
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$item_output .= ( $args->has_children ) ? '<span class="upstudy-menu-icon"><i class="dt-icon-down" aria-hidden="true"></i></span></a>' : '</a>';
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$item_output .= $args->after;
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$item_output .= $this->displayMegaMenu( $item , $upstudy_mega_menu );
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$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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* @access public
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* @param mixed $element Data object.
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* @param mixed $children_elements List of elements to continue traversing.
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* @param mixed $max_depth Max depth to traverse.
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* @param mixed $depth Depth of current element.
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* @param mixed $args Arguments.
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* @param mixed $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 menu 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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public static function fallback( $args ) {
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if ( current_user_can( 'edit_theme_options' ) ) {
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/* Get Arguments. */
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$container = $args['container'];
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$container_id = $args['container_id'];
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$container_class = $args['container_class'];
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$menu_class = $args['menu_class'];
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$menu_id = $args['menu_id'];
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if ( $container ) {
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echo '<' . esc_attr( $container );
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if ( $container_id ) {
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echo ' id="' . esc_attr( $container_id ) . '"';
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}
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if ( $container_class ) {
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echo ' class="' . sanitize_html_class( $container_class ) . '"'; }
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echo '>';
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}
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echo '<ul';
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if ( $menu_id ) {
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echo ' id="' . esc_attr( $menu_id ) . '"'; }
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if ( $menu_class ) {
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echo ' class="' . esc_attr( $menu_class ) . '"'; }
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echo '>';
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echo '<li><a href="' . esc_url( admin_url( 'nav-menus.php' ) ) . '" title="' . __( 'Add a menu', 'upstudy' ) . '">' . esc_attr( 'Add a menu', 'upstudy' ) . '</a></li>';
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echo '</ul>';
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if ( $container ) {
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echo '</' . esc_attr( $container ) . '>'; }
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}
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}
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public function megaMenuAsSubMenu($item, $depth ) {
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return isset($item->upstudy_mega_menu) && $item->upstudy_mega_menu ? $item->upstudy_mega_menu : false;
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}
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public function displayMegaMenu( $item, $upstudy_mega_menu ) {
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if ( $upstudy_mega_menu ) :
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$args = array(
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'name' => $upstudy_mega_menu,
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'post_type' => 'upstudy_megamenu',
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'post_status' => 'publish',
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'numberposts' => 1
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);
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$posts = get_posts($args);
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if ( $posts && isset( $posts[0] ) ) :
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$post = $posts[0];
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$content = apply_filters( 'upstudy_generate_post_builder', do_shortcode( $post->post_content ), $post, $post->ID );
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$width = $item->upstudy_menu_custom_width ? 'style="width:'.$item->upstudy_menu_custom_width.'px"':"";
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if ( 'fullwidth' === $item->upstudy_menu_alignment ) :
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$width = 'style="width:100%"';
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endif;
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return '<ul class="upstudy-mega-menu ' . esc_attr( $post->post_name ) . '" ' . $width . '><div class="upstudy-mega-menu-inner">' . $content . '</div></ul>';
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endif;
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endif;
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return '';
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}
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}
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