class-product-cat-dropdown-walker.php
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<?php
/**
* WC_Product_Cat_Dropdown_Walker class
*
* @extends Walker
* @class WC_Product_Cat_Dropdown_Walker
* @version 1.6.4
* @package WooCommerce/Classes/Walkers
* @author WooThemes
*/
if ( ! defined( 'ABSPATH' ) ) {
exit; // Exit if accessed directly
}
if ( ! class_exists( 'WC_Product_Cat_Dropdown_Walker' ) ) :
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 int $depth Depth of category in reference to parents.
* @param integer $current_object_id
*/
public function start_el( &$output, $cat, $depth = 0, $args = array(), $current_object_id = 0 ) {
if ( ! empty( $args['hierarchical'] ) )
$pad = str_repeat(' ', $depth * 3);
else
$pad = '';
$cat_name = apply_filters( 'list_product_cats', $cat->name, $cat );
$value = isset( $args['value'] ) && $args['value'] == 'id' ? $cat->term_id : $cat->slug;
$output .= "\t<option class=\"level-$depth\" value=\"" . $value . "\"";
if ( $value == $args['selected'] || ( is_array( $args['selected'] ) && in_array( $value, $args['selected'] ) ) )
$output .= ' selected="selected"';
$output .= '>';
$output .= $pad . _x( $cat_name, 'product category name', 'woocommerce' );
if ( ! empty( $args['show_count'] ) )
$output .= ' (' . $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
* @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 = 0, $args, &$output ) {
if ( ! $element || ( 0 === $element->count && ! empty( $args[0]['hide_empty'] ) ) ) {
return;
}
parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
}
}
endif;