470 lines
14 KiB
PHP
470 lines
14 KiB
PHP
<?php
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/**
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* Layered nav widget
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*
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* @package WooCommerce\Widgets
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* @version 2.6.0
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*/
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use Automattic\WooCommerce\Internal\ProductAttributesLookup\Filterer;
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defined( 'ABSPATH' ) || exit;
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/**
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* Widget layered nav class.
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*/
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class WC_Widget_Layered_Nav extends WC_Widget {
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/**
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* Constructor.
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*/
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public function __construct() {
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$this->widget_cssclass = 'woocommerce widget_layered_nav woocommerce-widget-layered-nav';
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$this->widget_description = __( 'Display a list of attributes to filter products in your store.', 'woocommerce' );
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$this->widget_id = 'woocommerce_layered_nav';
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$this->widget_name = __( 'Filter Products by Attribute', 'woocommerce' );
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parent::__construct();
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}
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/**
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* Updates a particular instance of a widget.
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*
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* @see WP_Widget->update
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*
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* @param array $new_instance New Instance.
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* @param array $old_instance Old Instance.
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*
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* @return array
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*/
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public function update( $new_instance, $old_instance ) {
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$this->init_settings();
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return parent::update( $new_instance, $old_instance );
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}
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/**
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* Outputs the settings update form.
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*
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* @see WP_Widget->form
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*
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* @param array $instance Instance.
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*/
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public function form( $instance ) {
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$this->init_settings();
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parent::form( $instance );
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}
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/**
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* Init settings after post types are registered.
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*/
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public function init_settings() {
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$attribute_array = array();
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$std_attribute = '';
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$attribute_taxonomies = wc_get_attribute_taxonomies();
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if ( ! empty( $attribute_taxonomies ) ) {
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foreach ( $attribute_taxonomies as $tax ) {
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if ( taxonomy_exists( wc_attribute_taxonomy_name( $tax->attribute_name ) ) ) {
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$attribute_array[ $tax->attribute_name ] = $tax->attribute_name;
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}
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}
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$std_attribute = current( $attribute_array );
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}
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$this->settings = array(
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'title' => array(
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'type' => 'text',
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'std' => __( 'Filter by', 'woocommerce' ),
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'label' => __( 'Title', 'woocommerce' ),
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),
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'attribute' => array(
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'type' => 'select',
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'std' => $std_attribute,
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'label' => __( 'Attribute', 'woocommerce' ),
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'options' => $attribute_array,
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),
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'display_type' => array(
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'type' => 'select',
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'std' => 'list',
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'label' => __( 'Display type', 'woocommerce' ),
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'options' => array(
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'list' => __( 'List', 'woocommerce' ),
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'dropdown' => __( 'Dropdown', 'woocommerce' ),
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),
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),
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'query_type' => array(
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'type' => 'select',
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'std' => 'and',
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'label' => __( 'Query type', 'woocommerce' ),
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'options' => array(
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'and' => __( 'AND', 'woocommerce' ),
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'or' => __( 'OR', 'woocommerce' ),
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),
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),
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);
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}
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/**
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* Get this widgets taxonomy.
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*
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* @param array $instance Array of instance options.
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* @return string
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*/
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protected function get_instance_taxonomy( $instance ) {
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if ( isset( $instance['attribute'] ) ) {
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return wc_attribute_taxonomy_name( $instance['attribute'] );
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}
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$attribute_taxonomies = wc_get_attribute_taxonomies();
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if ( ! empty( $attribute_taxonomies ) ) {
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foreach ( $attribute_taxonomies as $tax ) {
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if ( taxonomy_exists( wc_attribute_taxonomy_name( $tax->attribute_name ) ) ) {
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return wc_attribute_taxonomy_name( $tax->attribute_name );
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}
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}
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}
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return '';
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}
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/**
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* Get this widgets query type.
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*
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* @param array $instance Array of instance options.
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* @return string
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*/
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protected function get_instance_query_type( $instance ) {
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return isset( $instance['query_type'] ) ? $instance['query_type'] : 'and';
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}
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/**
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* Get this widgets display type.
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*
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* @param array $instance Array of instance options.
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* @return string
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*/
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protected function get_instance_display_type( $instance ) {
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return isset( $instance['display_type'] ) ? $instance['display_type'] : 'list';
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}
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/**
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* Output widget.
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*
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* @see WP_Widget
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*
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* @param array $args Arguments.
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* @param array $instance Instance.
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*/
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public function widget( $args, $instance ) {
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if ( ! is_shop() && ! is_product_taxonomy() ) {
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return;
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}
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$_chosen_attributes = WC_Query::get_layered_nav_chosen_attributes();
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$taxonomy = $this->get_instance_taxonomy( $instance );
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$query_type = $this->get_instance_query_type( $instance );
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$display_type = $this->get_instance_display_type( $instance );
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if ( ! taxonomy_exists( $taxonomy ) ) {
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return;
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}
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$terms = get_terms( $taxonomy, array( 'hide_empty' => '1' ) );
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if ( 0 === count( $terms ) ) {
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return;
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}
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ob_start();
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$this->widget_start( $args, $instance );
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if ( 'dropdown' === $display_type ) {
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wp_enqueue_script( 'selectWoo' );
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wp_enqueue_style( 'select2' );
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$found = $this->layered_nav_dropdown( $terms, $taxonomy, $query_type );
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} else {
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$found = $this->layered_nav_list( $terms, $taxonomy, $query_type );
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}
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$this->widget_end( $args );
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// Force found when option is selected - do not force found on taxonomy attributes.
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if ( ! is_tax() && is_array( $_chosen_attributes ) && array_key_exists( $taxonomy, $_chosen_attributes ) ) {
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$found = true;
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}
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if ( ! $found ) {
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ob_end_clean();
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} else {
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echo ob_get_clean(); // @codingStandardsIgnoreLine
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}
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}
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/**
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* Return the currently viewed taxonomy name.
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*
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* @return string
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*/
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protected function get_current_taxonomy() {
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return is_tax() ? get_queried_object()->taxonomy : '';
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}
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/**
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* Return the currently viewed term ID.
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*
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* @return int
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*/
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protected function get_current_term_id() {
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return absint( is_tax() ? get_queried_object()->term_id : 0 );
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}
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/**
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* Return the currently viewed term slug.
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*
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* @return int
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*/
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protected function get_current_term_slug() {
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return absint( is_tax() ? get_queried_object()->slug : 0 );
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}
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/**
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* Show dropdown layered nav.
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*
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* @param array $terms Terms.
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* @param string $taxonomy Taxonomy.
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* @param string $query_type Query Type.
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* @return bool Will nav display?
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*/
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protected function layered_nav_dropdown( $terms, $taxonomy, $query_type ) {
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global $wp;
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$found = false;
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if ( $taxonomy !== $this->get_current_taxonomy() ) {
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$term_counts = $this->get_filtered_term_product_counts( wp_list_pluck( $terms, 'term_id' ), $taxonomy, $query_type );
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$_chosen_attributes = WC_Query::get_layered_nav_chosen_attributes();
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$taxonomy_filter_name = wc_attribute_taxonomy_slug( $taxonomy );
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$taxonomy_label = wc_attribute_label( $taxonomy );
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/* translators: %s: taxonomy name */
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$any_label = apply_filters( 'woocommerce_layered_nav_any_label', sprintf( __( 'Any %s', 'woocommerce' ), $taxonomy_label ), $taxonomy_label, $taxonomy );
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$multiple = 'or' === $query_type;
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$current_values = isset( $_chosen_attributes[ $taxonomy ]['terms'] ) ? $_chosen_attributes[ $taxonomy ]['terms'] : array();
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if ( '' === get_option( 'permalink_structure' ) ) {
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$form_action = remove_query_arg( array( 'page', 'paged' ), add_query_arg( $wp->query_string, '', home_url( $wp->request ) ) );
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} else {
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$form_action = preg_replace( '%\/page/[0-9]+%', '', home_url( user_trailingslashit( $wp->request ) ) );
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}
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echo '<form method="get" action="' . esc_url( $form_action ) . '" class="woocommerce-widget-layered-nav-dropdown">';
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echo '<select class="woocommerce-widget-layered-nav-dropdown dropdown_layered_nav_' . esc_attr( $taxonomy_filter_name ) . '"' . ( $multiple ? 'multiple="multiple"' : '' ) . '>';
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echo '<option value="">' . esc_html( $any_label ) . '</option>';
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foreach ( $terms as $term ) {
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// If on a term page, skip that term in widget list.
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if ( $term->term_id === $this->get_current_term_id() ) {
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continue;
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}
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// Get count based on current view.
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$option_is_set = in_array( $term->slug, $current_values, true );
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$count = isset( $term_counts[ $term->term_id ] ) ? $term_counts[ $term->term_id ] : 0;
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// Only show options with count > 0.
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if ( 0 < $count ) {
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$found = true;
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} elseif ( 0 === $count && ! $option_is_set ) {
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continue;
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}
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echo '<option value="' . esc_attr( urldecode( $term->slug ) ) . '" ' . selected( $option_is_set, true, false ) . '>' . esc_html( $term->name ) . '</option>';
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}
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echo '</select>';
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if ( $multiple ) {
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echo '<button class="woocommerce-widget-layered-nav-dropdown__submit" type="submit" value="' . esc_attr__( 'Apply', 'woocommerce' ) . '">' . esc_html__( 'Apply', 'woocommerce' ) . '</button>';
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}
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if ( 'or' === $query_type ) {
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echo '<input type="hidden" name="query_type_' . esc_attr( $taxonomy_filter_name ) . '" value="or" />';
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}
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echo '<input type="hidden" name="filter_' . esc_attr( $taxonomy_filter_name ) . '" value="' . esc_attr( implode( ',', $current_values ) ) . '" />';
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echo wc_query_string_form_fields( null, array( 'filter_' . $taxonomy_filter_name, 'query_type_' . $taxonomy_filter_name ), '', true ); // @codingStandardsIgnoreLine
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echo '</form>';
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wc_enqueue_js(
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"
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// Update value on change.
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jQuery( '.dropdown_layered_nav_" . esc_js( $taxonomy_filter_name ) . "' ).on( 'change', function() {
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var slug = jQuery( this ).val();
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jQuery( ':input[name=\"filter_" . esc_js( $taxonomy_filter_name ) . "\"]' ).val( slug );
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// Submit form on change if standard dropdown.
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if ( ! jQuery( this ).attr( 'multiple' ) ) {
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jQuery( this ).closest( 'form' ).trigger( 'submit' );
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}
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});
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// Use Select2 enhancement if possible
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if ( jQuery().selectWoo ) {
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var wc_layered_nav_select = function() {
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jQuery( '.dropdown_layered_nav_" . esc_js( $taxonomy_filter_name ) . "' ).selectWoo( {
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placeholder: decodeURIComponent('" . rawurlencode( (string) wp_specialchars_decode( $any_label ) ) . "'),
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minimumResultsForSearch: 5,
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width: '100%',
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allowClear: " . ( $multiple ? 'false' : 'true' ) . ",
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language: {
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noResults: function() {
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return '" . esc_js( _x( 'No matches found', 'enhanced select', 'woocommerce' ) ) . "';
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}
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}
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} );
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};
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wc_layered_nav_select();
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}
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"
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);
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}
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return $found;
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}
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/**
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* Count products within certain terms, taking the main WP query into consideration.
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*
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* This query allows counts to be generated based on the viewed products, not all products.
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*
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* @param array $term_ids Term IDs.
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* @param string $taxonomy Taxonomy.
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* @param string $query_type Query Type.
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* @return array
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*/
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protected function get_filtered_term_product_counts( $term_ids, $taxonomy, $query_type ) {
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return wc_get_container()->get( Filterer::class )->get_filtered_term_product_counts( $term_ids, $taxonomy, $query_type );
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}
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/**
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* Wrapper for WC_Query::get_main_tax_query() to ease unit testing.
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*
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* @since 4.4.0
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* @return array
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*/
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protected function get_main_tax_query() {
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return WC_Query::get_main_tax_query();
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}
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/**
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* Wrapper for WC_Query::get_main_search_query_sql() to ease unit testing.
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*
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* @since 4.4.0
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* @return string
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*/
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protected function get_main_search_query_sql() {
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return WC_Query::get_main_search_query_sql();
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}
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/**
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* Wrapper for WC_Query::get_main_search_queryget_main_meta_query to ease unit testing.
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*
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* @since 4.4.0
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* @return array
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*/
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protected function get_main_meta_query() {
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return WC_Query::get_main_meta_query();
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}
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/**
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* Show list based layered nav.
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*
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* @param array $terms Terms.
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* @param string $taxonomy Taxonomy.
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* @param string $query_type Query Type.
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* @return bool Will nav display?
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*/
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protected function layered_nav_list( $terms, $taxonomy, $query_type ) {
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// List display.
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echo '<ul class="woocommerce-widget-layered-nav-list">';
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$term_counts = $this->get_filtered_term_product_counts( wp_list_pluck( $terms, 'term_id' ), $taxonomy, $query_type );
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$_chosen_attributes = WC_Query::get_layered_nav_chosen_attributes();
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$found = false;
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$base_link = $this->get_current_page_url();
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foreach ( $terms as $term ) {
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$current_values = isset( $_chosen_attributes[ $taxonomy ]['terms'] ) ? $_chosen_attributes[ $taxonomy ]['terms'] : array();
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$option_is_set = in_array( $term->slug, $current_values, true );
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$count = isset( $term_counts[ $term->term_id ] ) ? $term_counts[ $term->term_id ] : 0;
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// Skip the term for the current archive.
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if ( $this->get_current_term_id() === $term->term_id ) {
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continue;
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}
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// Only show options with count > 0.
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if ( 0 < $count ) {
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$found = true;
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} elseif ( 0 === $count && ! $option_is_set ) {
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continue;
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}
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$filter_name = 'filter_' . wc_attribute_taxonomy_slug( $taxonomy );
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// phpcs:ignore WordPress.Security.NonceVerification.Recommended
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$current_filter = isset( $_GET[ $filter_name ] ) ? explode( ',', wc_clean( wp_unslash( $_GET[ $filter_name ] ) ) ) : array();
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$current_filter = array_map( 'sanitize_title', $current_filter );
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if ( ! in_array( $term->slug, $current_filter, true ) ) {
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$current_filter[] = $term->slug;
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}
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$link = remove_query_arg( $filter_name, $base_link );
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// Add current filters to URL.
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foreach ( $current_filter as $key => $value ) {
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// Exclude query arg for current term archive term.
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if ( $value === $this->get_current_term_slug() ) {
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unset( $current_filter[ $key ] );
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}
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// Exclude self so filter can be unset on click.
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if ( $option_is_set && $value === $term->slug ) {
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unset( $current_filter[ $key ] );
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}
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}
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if ( ! empty( $current_filter ) ) {
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asort( $current_filter );
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$link = add_query_arg( $filter_name, implode( ',', $current_filter ), $link );
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// Add Query type Arg to URL.
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if ( 'or' === $query_type && ! ( 1 === count( $current_filter ) && $option_is_set ) ) {
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$link = add_query_arg( 'query_type_' . wc_attribute_taxonomy_slug( $taxonomy ), 'or', $link );
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}
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$link = str_replace( '%2C', ',', $link );
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}
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if ( $count > 0 || $option_is_set ) {
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$link = apply_filters( 'woocommerce_layered_nav_link', $link, $term, $taxonomy );
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$term_html = '<a rel="nofollow" href="' . esc_url( $link ) . '">' . esc_html( $term->name ) . '</a>';
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} else {
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$link = false;
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$term_html = '<span>' . esc_html( $term->name ) . '</span>';
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}
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$term_html .= ' ' . apply_filters( 'woocommerce_layered_nav_count', '<span class="count">(' . absint( $count ) . ')</span>', $count, $term );
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echo '<li class="woocommerce-widget-layered-nav-list__item wc-layered-nav-term ' . ( $option_is_set ? 'woocommerce-widget-layered-nav-list__item--chosen chosen' : '' ) . '">';
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// phpcs:ignore WordPress.Security.NonceVerification.Recommended, WordPress.Security.EscapeOutput.OutputNotEscaped
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echo apply_filters( 'woocommerce_layered_nav_term_html', $term_html, $term, $link, $count );
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echo '</li>';
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}
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echo '</ul>';
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return $found;
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}
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}
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