initial commit

includes/widgets/class-wc-widget-product-categories.php

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+<?php
+/**
+ * Product Categories Widget
+ *
+ * @package WooCommerce\Widgets
+ * @version 2.3.0
+ */
+
+defined( 'ABSPATH' ) || exit;
+
+/**
+ * Product categories widget class.
+ *
+ * @extends WC_Widget
+ */
+class WC_Widget_Product_Categories extends WC_Widget {
+
+	/**
+	 * Category ancestors.
+	 *
+	 * @var array
+	 */
+	public $cat_ancestors;
+
+	/**
+	 * Current Category.
+	 *
+	 * @var bool
+	 */
+	public $current_cat;
+
+	/**
+	 * Constructor.
+	 */
+	public function __construct() {
+		$this->widget_cssclass    = 'woocommerce widget_product_categories';
+		$this->widget_description = __( 'A list or dropdown of product categories.', 'woocommerce' );
+		$this->widget_id          = 'woocommerce_product_categories';
+		$this->widget_name        = __( 'Product Categories', 'woocommerce' );
+		$this->settings           = array(
+			'title'              => array(
+				'type'  => 'text',
+				'std'   => __( 'Product categories', 'woocommerce' ),
+				'label' => __( 'Title', 'woocommerce' ),
+			),
+			'orderby'            => array(
+				'type'    => 'select',
+				'std'     => 'name',
+				'label'   => __( 'Order by', 'woocommerce' ),
+				'options' => array(
+					'order' => __( 'Category order', 'woocommerce' ),
+					'name'  => __( 'Name', 'woocommerce' ),
+				),
+			),
+			'dropdown'           => array(
+				'type'  => 'checkbox',
+				'std'   => 0,
+				'label' => __( 'Show as dropdown', 'woocommerce' ),
+			),
+			'count'              => array(
+				'type'  => 'checkbox',
+				'std'   => 0,
+				'label' => __( 'Show product counts', 'woocommerce' ),
+			),
+			'hierarchical'       => array(
+				'type'  => 'checkbox',
+				'std'   => 1,
+				'label' => __( 'Show hierarchy', 'woocommerce' ),
+			),
+			'show_children_only' => array(
+				'type'  => 'checkbox',
+				'std'   => 0,
+				'label' => __( 'Only show children of the current category', 'woocommerce' ),
+			),
+			'hide_empty'         => array(
+				'type'  => 'checkbox',
+				'std'   => 0,
+				'label' => __( 'Hide empty categories', 'woocommerce' ),
+			),
+			'max_depth'          => array(
+				'type'  => 'text',
+				'std'   => '',
+				'label' => __( 'Maximum depth', 'woocommerce' ),
+			),
+		);
+
+		parent::__construct();
+	}
+
+	/**
+	 * Output widget.
+	 *
+	 * @see WP_Widget
+	 * @param array $args     Widget arguments.
+	 * @param array $instance Widget instance.
+	 */
+	public function widget( $args, $instance ) {
+		global $wp_query, $post;
+
+		$count              = isset( $instance['count'] ) ? $instance['count'] : $this->settings['count']['std'];
+		$hierarchical       = isset( $instance['hierarchical'] ) ? $instance['hierarchical'] : $this->settings['hierarchical']['std'];
+		$show_children_only = isset( $instance['show_children_only'] ) ? $instance['show_children_only'] : $this->settings['show_children_only']['std'];
+		$dropdown           = isset( $instance['dropdown'] ) ? $instance['dropdown'] : $this->settings['dropdown']['std'];
+		$orderby            = isset( $instance['orderby'] ) ? $instance['orderby'] : $this->settings['orderby']['std'];
+		$hide_empty         = isset( $instance['hide_empty'] ) ? $instance['hide_empty'] : $this->settings['hide_empty']['std'];
+		$dropdown_args      = array(
+			'hide_empty' => $hide_empty,
+		);
+		$list_args          = array(
+			'show_count'   => $count,
+			'hierarchical' => $hierarchical,
+			'taxonomy'     => 'product_cat',
+			'hide_empty'   => $hide_empty,
+		);
+		$max_depth          = absint( isset( $instance['max_depth'] ) ? $instance['max_depth'] : $this->settings['max_depth']['std'] );
+
+		$list_args['menu_order'] = false;
+		$dropdown_args['depth']  = $max_depth;
+		$list_args['depth']      = $max_depth;
+
+		if ( 'order' === $orderby ) {
+			$list_args['orderby']      = 'meta_value_num';
+			$dropdown_args['orderby']  = 'meta_value_num';
+			$list_args['meta_key']     = 'order';
+			$dropdown_args['meta_key'] = 'order';
+		}
+
+		$this->current_cat   = false;
+		$this->cat_ancestors = array();
+
+		if ( is_tax( 'product_cat' ) ) {
+			$this->current_cat   = $wp_query->queried_object;
+			$this->cat_ancestors = get_ancestors( $this->current_cat->term_id, 'product_cat' );
+
+		} elseif ( is_singular( 'product' ) ) {
+			$terms = wc_get_product_terms(
+				$post->ID,
+				'product_cat',
+				apply_filters(
+					'woocommerce_product_categories_widget_product_terms_args',
+					array(
+						'orderby' => 'parent',
+						'order'   => 'DESC',
+					)
+				)
+			);
+
+			if ( $terms ) {
+				$main_term           = apply_filters( 'woocommerce_product_categories_widget_main_term', $terms[0], $terms );
+				$this->current_cat   = $main_term;
+				$this->cat_ancestors = get_ancestors( $main_term->term_id, 'product_cat' );
+			}
+		}
+
+		// Show Siblings and Children Only.
+		if ( $show_children_only && $this->current_cat ) {
+			if ( $hierarchical ) {
+				$include = array_merge(
+					$this->cat_ancestors,
+					array( $this->current_cat->term_id ),
+					get_terms(
+						'product_cat',
+						array(
+							'fields'       => 'ids',
+							'parent'       => 0,
+							'hierarchical' => true,
+							'hide_empty'   => false,
+						)
+					),
+					get_terms(
+						'product_cat',
+						array(
+							'fields'       => 'ids',
+							'parent'       => $this->current_cat->term_id,
+							'hierarchical' => true,
+							'hide_empty'   => false,
+						)
+					)
+				);
+				// Gather siblings of ancestors.
+				if ( $this->cat_ancestors ) {
+					foreach ( $this->cat_ancestors as $ancestor ) {
+						$include = array_merge(
+							$include,
+							get_terms(
+								'product_cat',
+								array(
+									'fields'       => 'ids',
+									'parent'       => $ancestor,
+									'hierarchical' => false,
+									'hide_empty'   => false,
+								)
+							)
+						);
+					}
+				}
+			} else {
+				// Direct children.
+				$include = get_terms(
+					'product_cat',
+					array(
+						'fields'       => 'ids',
+						'parent'       => $this->current_cat->term_id,
+						'hierarchical' => true,
+						'hide_empty'   => false,
+					)
+				);
+			}
+
+			$list_args['include']     = implode( ',', $include );
+			$dropdown_args['include'] = $list_args['include'];
+
+			if ( empty( $include ) ) {
+				return;
+			}
+		} elseif ( $show_children_only ) {
+			$dropdown_args['depth']        = 1;
+			$dropdown_args['child_of']     = 0;
+			$dropdown_args['hierarchical'] = 1;
+			$list_args['depth']            = 1;
+			$list_args['child_of']         = 0;
+			$list_args['hierarchical']     = 1;
+		}
+
+		$this->widget_start( $args, $instance );
+
+		if ( $dropdown ) {
+			wc_product_dropdown_categories(
+				apply_filters(
+					'woocommerce_product_categories_widget_dropdown_args',
+					wp_parse_args(
+						$dropdown_args,
+						array(
+							'show_count'         => $count,
+							'hierarchical'       => $hierarchical,
+							'show_uncategorized' => 0,
+							'selected'           => $this->current_cat ? $this->current_cat->slug : '',
+						)
+					)
+				)
+			);
+
+			wp_enqueue_script( 'selectWoo' );
+			wp_enqueue_style( 'select2' );
+
+			wc_enqueue_js(
+				"
+				jQuery( '.dropdown_product_cat' ).on( 'change', function() {
+					if ( jQuery(this).val() != '' ) {
+						var this_page = '';
+						var home_url  = '" . esc_js( home_url( '/' ) ) . "';
+						if ( home_url.indexOf( '?' ) > 0 ) {
+							this_page = home_url + '&product_cat=' + jQuery(this).val();
+						} else {
+							this_page = home_url + '?product_cat=' + jQuery(this).val();
+						}
+						location.href = this_page;
+					} else {
+						location.href = '" . esc_js( wc_get_page_permalink( 'shop' ) ) . "';
+					}
+				});
+
+				if ( jQuery().selectWoo ) {
+					var wc_product_cat_select = function() {
+						jQuery( '.dropdown_product_cat' ).selectWoo( {
+							placeholder: '" . esc_js( __( 'Select a category', 'woocommerce' ) ) . "',
+							minimumResultsForSearch: 5,
+							width: '100%',
+							allowClear: true,
+							language: {
+								noResults: function() {
+									return '" . esc_js( _x( 'No matches found', 'enhanced select', 'woocommerce' ) ) . "';
+								}
+							}
+						} );
+					};
+					wc_product_cat_select();
+				}
+			"
+			);
+		} else {
+			include_once WC()->plugin_path() . '/includes/walkers/class-wc-product-cat-list-walker.php';
+
+			$list_args['walker']                     = new WC_Product_Cat_List_Walker();
+			$list_args['title_li']                   = '';
+			$list_args['pad_counts']                 = 1;
+			$list_args['show_option_none']           = __( 'No product categories exist.', 'woocommerce' );
+			$list_args['current_category']           = ( $this->current_cat ) ? $this->current_cat->term_id : '';
+			$list_args['current_category_ancestors'] = $this->cat_ancestors;
+			$list_args['max_depth']                  = $max_depth;
+
+			echo '<ul class="product-categories">';
+
+			wp_list_categories( apply_filters( 'woocommerce_product_categories_widget_args', $list_args ) );
+
+			echo '</ul>';
+		}
+
+		$this->widget_end( $args );
+	}
+}