103 lines
3.0 KiB
PHP
103 lines
3.0 KiB
PHP
<?php
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/**
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* WC_Product_Cat_Dropdown_Walker class
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*
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* @package WooCommerce/Classes/Walkers
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* @version 3.4.0
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*/
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defined( 'ABSPATH' ) || exit;
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if ( class_exists( 'WC_Product_Cat_Dropdown_Walker', false ) ) {
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return;
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}
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/**
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* Product category dropdown walker class.
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*/
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class WC_Product_Cat_Dropdown_Walker extends Walker {
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/**
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* What the class handles.
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*
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* @var string
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*/
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public $tree_type = 'category';
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/**
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* DB fields to use.
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*
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* @var array
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*/
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public $db_fields = array(
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'parent' => 'parent',
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'id' => 'term_id',
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'slug' => 'slug',
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);
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/**
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* Starts the list before the elements are added.
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*
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* @see Walker::start_el()
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* @since 2.1.0
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*
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* @param string $output Passed by reference. Used to append additional content.
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* @param object $cat Category.
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* @param int $depth Depth of category in reference to parents.
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* @param array $args Arguments.
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* @param int $current_object_id Current object ID.
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*/
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public function start_el( &$output, $cat, $depth = 0, $args = array(), $current_object_id = 0 ) {
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if ( ! empty( $args['hierarchical'] ) ) {
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$pad = str_repeat( ' ', $depth * 3 );
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} else {
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$pad = '';
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}
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$cat_name = apply_filters( 'list_product_cats', $cat->name, $cat );
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$value = ( isset( $args['value'] ) && 'id' === $args['value'] ) ? $cat->term_id : $cat->slug;
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$output .= "\t<option class=\"level-$depth\" value=\"" . esc_attr( $value ) . '"';
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if ( $value === $args['selected'] || ( is_array( $args['selected'] ) && in_array( $value, $args['selected'], true ) ) ) {
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$output .= ' selected="selected"';
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}
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$output .= '>';
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$output .= esc_html( $pad . $cat_name );
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if ( ! empty( $args['show_count'] ) ) {
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$output .= ' (' . absint( $cat->count ) . ')';
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}
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$output .= "</option>\n";
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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. It is possible to set the.
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* max depth to include all depths, see walk() method.
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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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* @since 2.5.0
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*
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* @param object $element Data object.
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* @param array $children_elements List of elements to continue traversing.
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* @param int $max_depth Max depth to traverse.
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* @param int $depth Depth of current element.
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* @param array $args Arguments.
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* @param string $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 = 0, $args, &$output ) {
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if ( ! $element || ( 0 === $element->count && ! empty( $args[0]['hide_empty'] ) ) ) {
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return;
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}
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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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