woo_widget_cssclass = 'woocommerce widget_layered_nav';
$this->woo_widget_description = __( 'Shows a custom attribute in a widget which lets you narrow down the list of products when viewing product categories.', 'woocommerce' );
$this->woo_widget_idbase = 'woocommerce_layered_nav';
$this->woo_widget_name = __( 'WooCommerce Layered Nav', 'woocommerce' );
/* Widget settings. */
$widget_ops = array( 'classname' => $this->woo_widget_cssclass, 'description' => $this->woo_widget_description );
/* Create the widget. */
$this->WP_Widget( 'woocommerce_layered_nav', $this->woo_widget_name, $widget_ops );
}
/**
* widget function.
*
* @see WP_Widget
* @access public
* @param array $args
* @param array $instance
* @return void
*/
function widget( $args, $instance ) {
global $_chosen_attributes, $woocommerce, $_attributes_array;
extract( $args );
if ( ! is_post_type_archive( 'product' ) && ! is_tax( array_merge( $_attributes_array, array( 'product_cat', 'product_tag' ) ) ) )
return;
$current_term = $_attributes_array && is_tax( $_attributes_array ) ? get_queried_object()->term_id : '';
$current_tax = $_attributes_array && is_tax( $_attributes_array ) ? get_queried_object()->taxonomy : '';
$title = apply_filters('widget_title', $instance['title'], $instance, $this->id_base);
$taxonomy = $woocommerce->attribute_taxonomy_name($instance['attribute']);
$query_type = isset( $instance['query_type'] ) ? $instance['query_type'] : 'and';
$display_type = isset( $instance['display_type'] ) ? $instance['display_type'] : 'list';
if ( ! taxonomy_exists( $taxonomy ) )
return;
$terms = get_terms( $taxonomy, array( 'hide_empty' => '1' ) );
if ( count( $terms ) > 0 ) {
ob_start();
$found = false;
echo $before_widget . $before_title . $title . $after_title;
// Force found when option is selected - do not force found on taxonomy attributes
if ( ! $_attributes_array || ! is_tax( $_attributes_array ) )
if ( is_array( $_chosen_attributes ) && array_key_exists( $taxonomy, $_chosen_attributes ) )
$found = true;
if ( $display_type == 'dropdown' ) {
// skip when viewing the taxonomy
if ( $current_tax && $taxonomy == $current_tax ) {
$found = false;
} else {
$taxonomy_filter = str_replace( 'pa_', '', $taxonomy );
$found = true;
echo '';
$woocommerce->add_inline_js("
jQuery('#dropdown_layered_nav_$taxonomy_filter').change(function(){
location.href = '" . preg_replace( '%\/page/[0-9]+%', '', add_query_arg('filtering', '1', remove_query_arg( array( 'page', 'filter_' . $taxonomy_filter ) ) ) ) . "&filter_$taxonomy_filter=' + jQuery('#dropdown_layered_nav_$taxonomy_filter').val();
});
");
}
} else {
// List display
echo "";
foreach ( $terms as $term ) {
// Get count based on current view - uses transients
$transient_name = 'wc_ln_count_' . md5( sanitize_key( $taxonomy ) . sanitize_key( $term->term_id ) );
if ( false === ( $_products_in_term = get_transient( $transient_name ) ) ) {
$_products_in_term = get_objects_in_term( $term->term_id, $taxonomy );
set_transient( $transient_name, $_products_in_term );
}
$option_is_set = ( isset( $_chosen_attributes[ $taxonomy ] ) && in_array( $term->term_id, $_chosen_attributes[ $taxonomy ]['terms'] ) );
// If this is an AND query, only show options with count > 0
if ( $query_type == 'and' ) {
$count = sizeof( array_intersect( $_products_in_term, $woocommerce->query->filtered_product_ids ) );
// skip the term for the current archive
if ( $current_term == $term->term_id )
continue;
if ( $count > 0 && $current_term !== $term->term_id )
$found = true;
if ( $count == 0 && ! $option_is_set )
continue;
// If this is an OR query, show all options so search can be expanded
} else {
// skip the term for the current archive
if ( $current_term == $term->term_id )
continue;
$count = sizeof( array_intersect( $_products_in_term, $woocommerce->query->unfiltered_product_ids ) );
if ( $count > 0 )
$found = true;
}
$arg = 'filter_' . sanitize_title( $instance['attribute'] );
$current_filter = ( isset( $_GET[ $arg ] ) ) ? explode( ',', $_GET[ $arg ] ) : array();
if ( ! is_array( $current_filter ) )
$current_filter = array();
$current_filter = array_map( 'esc_attr', $current_filter );
if ( ! in_array( $term->term_id, $current_filter ) )
$current_filter[] = $term->term_id;
// Base Link decided by current page
if ( defined( 'SHOP_IS_ON_FRONT' ) ) {
$link = home_url();
} elseif ( is_post_type_archive( 'product' ) || is_page( woocommerce_get_page_id('shop') ) ) {
$link = get_post_type_archive_link( 'product' );
} else {
$link = get_term_link( get_query_var('term'), get_query_var('taxonomy') );
}
// All current filters
if ( $_chosen_attributes ) {
foreach ( $_chosen_attributes as $name => $data ) {
if ( $name !== $taxonomy ) {
//exclude query arg for current term archive term
while ( in_array( $current_term, $data['terms'] ) ) {
$key = array_search( $current_term, $data );
unset( $data['terms'][$key] );
}
if ( ! empty( $data['terms'] ) )
$link = add_query_arg( sanitize_title( str_replace( 'pa_', 'filter_', $name ) ), implode(',', $data['terms']), $link );
if ( $data['query_type'] == 'or' )
$link = add_query_arg( sanitize_title( str_replace( 'pa_', 'query_type_', $name ) ), 'or', $link );
}
}
}
// Min/Max
if ( isset( $_GET['min_price'] ) )
$link = add_query_arg( 'min_price', $_GET['min_price'], $link );
if ( isset( $_GET['max_price'] ) )
$link = add_query_arg( 'max_price', $_GET['max_price'], $link );
// Current Filter = this widget
if ( isset( $_chosen_attributes[ $taxonomy ] ) && is_array( $_chosen_attributes[ $taxonomy ]['terms'] ) && in_array( $term->term_id, $_chosen_attributes[ $taxonomy ]['terms'] ) ) {
$class = 'class="chosen"';
// Remove this term is $current_filter has more than 1 term filtered
if ( sizeof( $current_filter ) > 1 ) {
$current_filter_without_this = array_diff( $current_filter, array( $term->term_id ) );
$link = add_query_arg( $arg, implode( ',', $current_filter_without_this ), $link );
}
} else {
$class = '';
$link = add_query_arg( $arg, implode( ',', $current_filter ), $link );
}
// Search Arg
if ( get_search_query() )
$link = add_query_arg( 's', get_search_query(), $link );
// Post Type Arg
if ( isset( $_GET['post_type'] ) )
$link = add_query_arg( 'post_type', $_GET['post_type'], $link );
// Query type Arg
if ( $query_type == 'or' && ! ( sizeof( $current_filter ) == 1 && isset( $_chosen_attributes[ $taxonomy ]['terms'] ) && is_array( $_chosen_attributes[ $taxonomy ]['terms'] ) && in_array( $term->term_id, $_chosen_attributes[ $taxonomy ]['terms'] ) ) )
$link = add_query_arg( 'query_type_' . sanitize_title( $instance['attribute'] ), 'or', $link );
echo '- ';
echo ( $count > 0 || $option_is_set ) ? '' : '';
echo $term->name;
echo ( $count > 0 || $option_is_set ) ? '' : '';
echo ' ' . $count . '
';
}
echo "
";
} // End display type conditional
echo $after_widget;
if ( ! $found )
ob_clean();
else
echo ob_get_clean();
}
}
/**
* update function.
*
* @see WP_Widget->update
* @access public
* @param array $new_instance
* @param array $old_instance
* @return array
*/
function update( $new_instance, $old_instance ) {
global $woocommerce;
if ( empty( $new_instance['title'] ) )
$new_instance['title'] = $woocommerce->attribute_label( $new_instance['attribute'] );
$instance['title'] = strip_tags( stripslashes($new_instance['title'] ) );
$instance['attribute'] = stripslashes( $new_instance['attribute'] );
$instance['query_type'] = stripslashes( $new_instance['query_type'] );
$instance['display_type'] = stripslashes( $new_instance['display_type'] );
return $instance;
}
/**
* form function.
*
* @see WP_Widget->form
* @access public
* @param array $instance
* @return void
*/
function form( $instance ) {
global $woocommerce;
if ( ! isset( $instance['query_type'] ) )
$instance['query_type'] = 'and';
if ( ! isset( $instance['display_type'] ) )
$instance['display_type'] = 'list';
?>
attribute_taxonomies;
if ( $attribute_taxonomies ) {
foreach ( $attribute_taxonomies as $tax ) {
$attribute = sanitize_title( $tax->attribute_name );
$taxonomy = $woocommerce->attribute_taxonomy_name( $attribute );
// create an array of product attribute taxonomies
$_attributes_array[] = $taxonomy;
$name = 'filter_' . $attribute;
$query_type_name = 'query_type_' . $attribute;
if ( ! empty( $_GET[ $name ] ) && taxonomy_exists( $taxonomy ) ) {
$_chosen_attributes[ $taxonomy ]['terms'] = explode( ',', $_GET[ $name ] );
if ( ! empty( $_GET[ $query_type_name ] ) && $_GET[ $query_type_name ] == 'or' )
$_chosen_attributes[ $taxonomy ]['query_type'] = 'or';
else
$_chosen_attributes[ $taxonomy ]['query_type'] = 'and';
}
}
}
add_filter('loop_shop_post_in', 'woocommerce_layered_nav_query');
}
}
add_action( 'init', 'woocommerce_layered_nav_init', 1 );
/**
* Layered Nav post filter
*
* @package WooCommerce/Widgets
* @access public
* @param array $filtered_posts
* @return array
*/
function woocommerce_layered_nav_query( $filtered_posts ) {
global $_chosen_attributes, $woocommerce, $wp_query;
if ( sizeof( $_chosen_attributes ) > 0 ) {
$matched_products = array();
$filtered_attribute = false;
foreach ( $_chosen_attributes as $attribute => $data ) {
$matched_products_from_attribute = array();
$filtered = false;
if ( sizeof( $data['terms'] ) > 0 ) {
foreach ( $data['terms'] as $value ) {
$posts = get_posts(
array(
'post_type' => 'product',
'numberposts' => -1,
'post_status' => 'publish',
'fields' => 'ids',
'no_found_rows' => true,
'tax_query' => array(
array(
'taxonomy' => $attribute,
'terms' => $value,
'field' => 'id'
)
)
)
);
// AND or OR
if ( $data['query_type'] == 'or' ) {
if ( ! is_wp_error( $posts ) && ( sizeof( $matched_products_from_attribute ) > 0 || $filtered ) )
$matched_products_from_attribute = array_merge($posts, $matched_products_from_attribute);
elseif ( ! is_wp_error( $posts ) )
$matched_products_from_attribute = $posts;
} else {
if ( ! is_wp_error( $posts ) && ( sizeof( $matched_products_from_attribute ) > 0 || $filtered ) )
$matched_products_from_attribute = array_intersect($posts, $matched_products_from_attribute);
elseif ( ! is_wp_error( $posts ) )
$matched_products_from_attribute = $posts;
}
$filtered = true;
}
}
if ( sizeof( $matched_products ) > 0 || $filtered_attribute )
$matched_products = array_intersect( $matched_products_from_attribute, $matched_products );
else
$matched_products = $matched_products_from_attribute;
$filtered_attribute = true;
}
if ( $filtered ) {
$woocommerce->query->layered_nav_post__in = $matched_products;
$woocommerce->query->layered_nav_post__in[] = 0;
if ( sizeof( $filtered_posts ) == 0 ) {
$filtered_posts = $matched_products;
$filtered_posts[] = 0;
} else {
$filtered_posts = array_intersect( $filtered_posts, $matched_products );
$filtered_posts[] = 0;
}
}
}
return (array) $filtered_posts;
}