File: /home/vhosts/harpoeditore.it/httpdocs/wp-content/themes/dt-the7/inc/class-the7-walker-nav-menu.php
<?php
/**
* The7 nav menu walker class.
*
* @since 7.6.0
*
* @package The7
*/
defined( 'ABSPATH' ) || exit;
/**
* Class The7_Nav_Menu_Walker
*/
class The7_Walker_Nav_Menu extends Walker_Nav_Menu {
/**
* Array of parent menu items ids.
*
* @var array
*/
protected $dt_menu_parents = array();
/**
* Determine is current item first in level.
*
* @var bool
*/
protected $dt_is_first = true;
/**
* @var int
*/
protected $the_last_depth_0_item_id;
/**
* Starts the list before the elements are added.
*
* @param string $output Used to append additional content (passed by reference).
* @param int $depth Depth of menu item. Used for padding.
* @param stdClass $args An object of wp_nav_menu() arguments.
*
* @see Walker::start_lvl()
*/
public function start_lvl( &$output, $depth = 0, $args = array() ) {
$this->dt_is_first = true;
$output .= apply_filters(
'presscore_nav_menu_start_lvl',
'<ul class="' . esc_attr( $args->submenu_class ) . '">',
$depth,
$args
);
}
/**
* Ends the list of after the elements are added.
*
* @param string $output Used to append additional content (passed by reference).
* @param int $depth Depth of menu item. Used for padding.
* @param stdClass $args An object of wp_nav_menu() arguments.
*
* @see Walker::end_lvl()
*/
public function end_lvl( &$output, $depth = 0, $args = array() ) {
$output .= apply_filters( 'presscore_nav_menu_end_lvl', '</ul>', $depth, $args );
}
/**
* Starts the element output.
*
* @param string $output Used to append additional content (passed by reference).
* @param WP_Post $item Menu item data object.
* @param int $depth Depth of menu item.
* @param stdClass $args An object of wp_nav_menu() arguments.
* @param int $id Current item ID.
*
* @see Walker::start_el()
*/
public function start_el( &$output, $item, $depth = 0, $args = array(), $id = 0 ) {
$item->dt_is_first = $this->dt_is_first;
$item->dt_is_parent = in_array( $item->ID, $this->dt_menu_parents );
$item->dt_is_clickable = ( ! $item->dt_is_parent || $args->parent_is_clickable );
do_action( 'presscore_nav_menu_start_el', $item, $args, $depth );
$classes = $this->dt_get_item_classes( $item, $args, $depth );
$link_before = apply_filters( 'presscore_nav_menu_link_before', $args->link_before, $item, $args, $depth );
$link_after = apply_filters( 'presscore_nav_menu_link_after', $args->link_after, $item, $args, $depth );
$el_before = apply_filters( 'presscore_nav_menu_el_before', '', $item, $args, $depth );
// li wrap.
$li_wrap = $el_before . '<li class="' . implode( ' ', array_filter( $classes ) ) . '">';
$output .= apply_filters( 'presscore_nav_menu_start_el_li', $li_wrap, $item, $args, $depth );
$title = apply_filters( 'the_title', $item->title, $item->ID );
$title = apply_filters( 'nav_menu_item_title', $title, $item, $args, $depth );
$description = '';
if ( $item->description ) {
$description = '<span class="subtitle-text">' . esc_html( $item->description ) . '</span>';
}
$menu_item = apply_filters( 'presscore_nav_menu_item', '', $title, $description, $item, $depth, $args );
if ( ! $menu_item ) {
$menu_item = '<span class="menu-item-text"><span class="menu-text">' . $title . '</span>' . $description . '</span>';
}
$menu_item = $link_before . $menu_item . $link_after;
$attributes = $this->dt_prepare_atts( $this->dt_get_item_atts( $item, $args, $depth ) );
if ( $attributes ) {
$item_output = '<a' . $attributes . '>' . $menu_item . '</a>';
} else {
$item_output = '<span>' . $menu_item . '</span>';
}
$item_output = $args->before . $item_output . $args->after;
$output .= apply_filters( 'walker_nav_menu_start_el', $item_output, $item, $depth, $args );
}
/**
* Ends the element output, if needed.
*
* @param string $output Used to append additional content (passed by reference).
* @param WP_Post $item Page data object. Not used.
* @param int $depth Depth of page. Not Used.
* @param stdClass $args An object of wp_nav_menu() arguments.
*
* @see Walker::end_el()
*/
public function end_el( &$output, $item, $depth = 0, $args = array() ) {
$this->dt_is_first = false;
$el_after = apply_filters( 'presscore_nav_menu_el_after', '', $item, $args, $depth );
$output .= apply_filters( 'presscore_nav_menu_end_el_li', '</li>' . $el_after . ' ', $item, $args, $depth );
}
/**
* 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. It is possible to set the
* max depth to include all depths, see walk() method.
*
* This method should not be called directly, use the walk() method instead.
*
* @param object $element Data object.
* @param array $children_elements List of elements to continue traversing (passed by reference).
* @param int $max_depth Max depth to traverse.
* @param int $depth Depth of current element.
* @param array $args An array of arguments.
* @param string $output Used to append additional content (passed by reference).
*/
public function display_element( $element, &$children_elements, $max_depth, $depth, $args, &$output ) {
if ( ! $element ) {
return;
}
$id_field = $this->db_fields['id'];
$id = $element->$id_field;
if ( ! empty( $children_elements[ $id ] ) ) {
$this->dt_menu_parents[] = $id;
}
parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
}
/**
* Display array of elements hierarchically.
*
* Does not assume any existing order of elements.
*
* $max_depth = -1 means flatly display every element.
* $max_depth = 0 means display all levels.
* $max_depth > 0 specifies the number of display levels.
*
* @param array $elements An array of elements.
* @param int $max_depth The maximum hierarchical depth.
* @param mixed ...$args Optional additional arguments.
*
* @return string The hierarchical item output.
* @since 2.1.0
* @since 5.3.0 Formalized the existing `...$args` parameter by adding it
* to the function signature.
*/
public function walk( $elements, $max_depth, ...$args ) {
$parent_field = $this->db_fields['parent'];
$id_field = $this->db_fields['id'];
// Flat display.
if ( - 1 === $max_depth ) {
$the_last_element = end( $elements );
$this->the_last_depth_0_item_id = $the_last_element->$id_field;
} else {
foreach ( $elements as $e ) {
if ( empty( $e->$parent_field ) ) {
$this->the_last_depth_0_item_id = $e->$id_field;
}
}
}
reset( $elements );
return parent::walk( $elements, $max_depth, ...$args );
}
/**
* Return item attributes array.
*
* @param WP_Post $item Page data object.
* @param stdClass $args An object of wp_nav_menu() arguments.
* @param int $depth Depth of page.
* @param array $atts Array of item attributes.
*
* @return array
*/
protected function dt_get_item_atts( $item, $args, $depth, $atts = array() ) {
$atts['href'] = ! empty( $item->url ) ? $item->url : '';
$atts['title'] = ! empty( $item->attr_title ) ? $item->attr_title : '';
$atts['target'] = ! empty( $item->target ) ? $item->target : '';
$atts['rel'] = ! empty( $item->xfn ) ? $item->xfn : '';
$atts['class'] = '';
if ( ! $item->dt_is_clickable ) {
$atts['class'] .= 'not-clickable-item';
}
$atts['data-level'] = absint( $depth ) + 1;
// TODO: Move to the The7_Mega_Menu class.
if ( isset( $item->the7_mega_menu['menu-item-icon-type'] ) && in_array( $item->the7_mega_menu['menu-item-icon-type'], array( 'image', 'icon' ) ) ) {
$atts['class'] .= ' mega-menu-img';
if ( isset( $item->the7_mega_menu['menu-item-image-position'] ) ) {
$atts['class'] .= ' mega-menu-img-' . $item->the7_mega_menu['menu-item-image-position'];
}
}
$atts = apply_filters( 'presscore_nav_menu_link_attributes', $atts, $item, $args, $depth );
return apply_filters( 'nav_menu_link_attributes', $atts, $item, $args, $depth );
}
/**
* Convert array of attributes to string.
*
* @param array $atts Attributes array.
*
* @return string
*/
protected function dt_prepare_atts( $atts = array() ) {
$attributes = '';
foreach ( $atts as $attr => $value ) {
if ( ! empty( $value ) ) {
$value = ( 'href' === $attr ) ? esc_url( $value ) : esc_attr( $value );
$attributes .= " {$attr}='{$value}'";
}
}
return $attributes;
}
/**
* Return array of item classes.
*
* @param WP_Post $item Page data object.
* @param stdClass $args An object of wp_nav_menu() arguments.
* @param int $depth Depth of page.
*
* @return array
*/
protected function dt_get_item_classes( $item, $args, $depth ) {
$classes = empty( $item->classes ) ? array() : (array) $item->classes;
$classes[] = 'menu-item-' . $item->ID;
if (
in_array( 'current-menu-item', $classes ) ||
in_array( 'current-menu-parent', $classes ) ||
in_array( 'current-menu-ancestor', $classes )
) {
$classes[] = 'act';
}
if ( $item->dt_is_first ) {
$classes[] = 'first';
}
if ( $item->ID === $this->the_last_depth_0_item_id ) {
$classes[] = 'last';
}
if ( $item->dt_is_parent ) {
$classes[] = 'has-children';
}
$classes[] = 'depth-' . $depth;
$classes = apply_filters( 'presscore_nav_menu_css_class', $classes, $item, $args, $depth );
return apply_filters( 'nav_menu_css_class', array_unique( $classes ), $item, $args, $depth );
}
}