woocommerce/includes/walkers/class-wc-product-cat-dropdown-walker.php
2021-12-10 12:03:04 +00:00

103 lines
3.0 KiB
PHP

<?php
/**
* WC_Product_Cat_Dropdown_Walker class
*
* @package WooCommerce\Classes\Walkers
* @version 3.4.0
*/
defined( 'ABSPATH' ) || exit;
if ( class_exists( 'WC_Product_Cat_Dropdown_Walker', false ) ) {
return;
}
/**
* Product category dropdown walker class.
*/
class WC_Product_Cat_Dropdown_Walker extends Walker {
/**
* What the class handles.
*
* @var string
*/
public $tree_type = 'category';
/**
* DB fields to use.
*
* @var array
*/
public $db_fields = array(
'parent' => 'parent',
'id' => 'term_id',
'slug' => 'slug',
);
/**
* Starts the list before the elements are added.
*
* @see Walker::start_el()
* @since 2.1.0
*
* @param string $output Passed by reference. Used to append additional content.
* @param object $cat Category.
* @param int $depth Depth of category in reference to parents.
* @param array $args Arguments.
* @param int $current_object_id Current object ID.
*/
public function start_el( &$output, $cat, $depth = 0, $args = array(), $current_object_id = 0 ) {
if ( ! empty( $args['hierarchical'] ) ) {
$pad = str_repeat( '&nbsp;', $depth * 3 );
} else {
$pad = '';
}
$cat_name = apply_filters( 'list_product_cats', $cat->name, $cat );
$value = ( isset( $args['value'] ) && 'id' === $args['value'] ) ? $cat->term_id : $cat->slug;
$output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $value ) . '"';
if ( $value === $args['selected'] || ( is_array( $args['selected'] ) && in_array( $value, $args['selected'], true ) ) ) {
$output .= ' selected="selected"';
}
$output .= '>';
$output .= esc_html( $pad . $cat_name );
if ( ! empty( $args['show_count'] ) ) {
$output .= '&nbsp;(' . absint( $cat->count ) . ')';
}
$output .= "</option>\n";
}
/**
* 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 shouldn't be called directly, use the walk() method instead.
*
* @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 Arguments.
* @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 || ( 0 === $element->count && ! empty( $args[0]['hide_empty'] ) ) ) {
return;
}
parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
}
}