woocommerce/includes/walkers/class-product-cat-dropdown-...

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<?php
/**
* WC_Product_Cat_Dropdown_Walker class.
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*
* @extends Walker
* @class WC_Product_Cat_Dropdown_Walker
* @version 1.6.4
* @package WooCommerce/Classes/Walkers
* @author WooThemes
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*/
if ( ! defined( 'ABSPATH' ) ) exit; // Exit if accessed directly
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class WC_Product_Cat_Dropdown_Walker extends Walker {
var $tree_type = 'category';
var $db_fields = array ('parent' => 'parent', 'id' => 'term_id', 'slug' => 'slug' );
/**
* @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 $current_object_id
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*/
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public function start_el( &$output, $cat, $depth = 0, $args = array(), $current_object_id = 0 ) {
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if ( ! empty( $args['hierarchical'] ) )
$pad = str_repeat('&nbsp;', $depth * 3);
else
$pad = '';
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$cat_name = apply_filters( 'list_product_cats', $cat->name, $cat );
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$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, $args['selected'] ) ) )
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$output .= ' selected="selected"';
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$output .= '>';
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$output .= $pad . __( $cat_name, 'woocommerce' );
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if ( ! empty( $args['show_count'] ) )
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$output .= '&nbsp;(' . $cat->count . ')';
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$output .= "</option>\n";
}
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/**
* 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 ) {
return;
}
parent::display_element( $element, $children_elements, $max_depth, $depth, $args, $output );
}
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}