273 lines
8.2 KiB
PHP
273 lines
8.2 KiB
PHP
<?php
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/**
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* Layered Navigation Widget and related functions
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*
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* @package WooCommerce
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* @category Widgets
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* @author WooThemes
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*/
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/**
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* Layered Nav Init
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*/
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add_action('init', 'woocommerce_layered_nav_init', 1);
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function woocommerce_layered_nav_init() {
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global $_chosen_attributes, $wpdb, $woocommerce;
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$_chosen_attributes = array();
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$attribute_taxonomies = $woocommerce->attribute_taxonomies;
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if ( $attribute_taxonomies ) :
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foreach ($attribute_taxonomies as $tax) :
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$attribute = strtolower(sanitize_title($tax->attribute_name));
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$taxonomy = $woocommerce->attribute_name($attribute);
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$name = 'filter_' . $attribute;
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if (isset($_GET[$name]) && taxonomy_exists($taxonomy)) $_chosen_attributes[$taxonomy] = explode(',', $_GET[$name] );
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endforeach;
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endif;
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}
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/**
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* Layered Nav post filter
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*/
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add_filter('loop-shop-posts-in', 'woocommerce_layered_nav_query');
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function woocommerce_layered_nav_query( $filtered_posts ) {
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global $_chosen_attributes, $wpdb, $woocommerce;
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if (sizeof($_chosen_attributes)>0) :
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$matched_products = array();
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$filtered = false;
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foreach ($_chosen_attributes as $attribute => $values) :
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if (sizeof($values)>0) :
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foreach ($values as $value) :
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$posts = get_objects_in_term( $value, $attribute );
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if (!is_wp_error($posts) && (sizeof($matched_products)>0 || $filtered)) :
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$matched_products = array_intersect($posts, $matched_products);
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elseif (!is_wp_error($posts)) :
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$matched_products = $posts;
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endif;
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$filtered = true;
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endforeach;
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endif;
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endforeach;
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if ($filtered) :
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$woocommerce->query['layered_nav_post__in'] = $matched_products;
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$woocommerce->query['layered_nav_post__in'][] = 0;
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if (sizeof($filtered_posts)==0) :
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$filtered_posts = $matched_products;
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$filtered_posts[] = 0;
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else :
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$filtered_posts = array_intersect($filtered_posts, $matched_products);
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$filtered_posts[] = 0;
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endif;
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endif;
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endif;
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return (array) $filtered_posts;
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}
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/**
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* Layered Nav Widget
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*/
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class WooCommerce_Widget_Layered_Nav extends WP_Widget {
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/** Variables to setup the widget. */
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var $woo_widget_cssclass;
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var $woo_widget_description;
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var $woo_widget_idbase;
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var $woo_widget_name;
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/** constructor */
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function WooCommerce_Widget_Layered_Nav() {
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/* Widget variable settings. */
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$this->woo_widget_cssclass = 'widget_layered_nav';
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$this->woo_widget_description = __( 'Shows a custom attribute in a widget which lets you narrow down the list of products when viewing product categories.', 'woothemes' );
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$this->woo_widget_idbase = 'woocommerce_layered_nav';
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$this->woo_widget_name = __('WooCommerce Layered Nav', 'woothemes' );
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/* Widget settings. */
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$widget_ops = array( 'classname' => $this->woo_widget_cssclass, 'description' => $this->woo_widget_description );
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/* Create the widget. */
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$this->WP_Widget('layered_nav', $this->woo_widget_name, $widget_ops);
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}
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/** @see WP_Widget */
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function widget( $args, $instance ) {
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extract($args);
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if (!is_tax( 'product_cat' ) && !is_post_type_archive('product') && !is_tax( 'product_tag' )) return;
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global $_chosen_attributes, $wpdb, $woocommerce;
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$title = $instance['title'];
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$taxonomy = $woocommerce->attribute_name($instance['attribute']);
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if (!taxonomy_exists($taxonomy)) return;
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$title = apply_filters('widget_title', $title, $instance, $this->id_base);
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$args = array(
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'hide_empty' => '1'
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);
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$terms = get_terms( $taxonomy, $args );
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$count = count($terms);
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if($count > 0){
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$found = false;
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ob_start();
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echo $before_widget . $before_title . $title . $after_title;
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echo "<ul>";
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// Force found when option is selected
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if (array_key_exists($taxonomy, $_chosen_attributes)) $found = true;
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foreach ($terms as $term) {
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$_products_in_term = get_objects_in_term( $term->term_id, $taxonomy );
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$count = sizeof(array_intersect($_products_in_term, $woocommerce->query['filtered_product_ids']));
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if ($count>0) $found = true;
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$option_is_set = (isset($_chosen_attributes[$taxonomy]) && in_array($term->term_id, $_chosen_attributes[$taxonomy]));
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if ($count==0 && !$option_is_set) continue;
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$class = '';
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$arg = 'filter_'.strtolower(sanitize_title($instance['attribute']));
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if (isset($_GET[ $arg ])) $current_filter = explode(',', $_GET[ $arg ]); else $current_filter = array();
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if (!is_array($current_filter)) $current_filter = array();
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if (!in_array($term->term_id, $current_filter)) $current_filter[] = $term->term_id;
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// Base Link decided by current page
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if (defined('SHOP_IS_ON_FRONT')) :
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$link = '';
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elseif (is_post_type_archive('product') || is_page( get_option('woocommerce_shop_page_id') )) :
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$link = get_post_type_archive_link('product');
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else :
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$link = get_term_link( get_query_var('term'), get_query_var('taxonomy') );
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endif;
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// All current filters
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if ($_chosen_attributes) foreach ($_chosen_attributes as $name => $value) :
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if ($name!==$taxonomy) :
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$link = add_query_arg( strtolower(sanitize_title(str_replace('pa_', 'filter_', $name))), implode(',', $value), $link );
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endif;
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endforeach;
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// Min/Max
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if (isset($_GET['min_price'])) :
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$link = add_query_arg( 'min_price', $_GET['min_price'], $link );
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endif;
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if (isset($_GET['max_price'])) :
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$link = add_query_arg( 'max_price', $_GET['max_price'], $link );
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endif;
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// Current Filter = this widget
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if (isset( $_chosen_attributes[$taxonomy] ) && is_array($_chosen_attributes[$taxonomy]) && in_array($term->term_id, $_chosen_attributes[$taxonomy])) :
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$class = 'class="chosen"';
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else :
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$link = add_query_arg( $arg, implode(',', $current_filter), $link );
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endif;
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// Search Arg
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if (get_search_query()) :
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$link = add_query_arg( 's', get_search_query(), $link );
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endif;
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// Post Type Arg
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if (isset($_GET['post_type'])) :
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$link = add_query_arg( 'post_type', $_GET['post_type'], $link );
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endif;
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echo '<li '.$class.'>';
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if ($count>0 || $option_is_set) echo '<a href="'.$link.'">'; else echo '<span>';
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echo $term->name;
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if ($count>0 || $option_is_set) echo '</a>'; else echo '</span>';
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echo ' <small class="count">'.$count.'</small></li>';
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}
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echo "</ul>";
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echo $after_widget;
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if (!$found) :
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ob_clean();
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return;
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else :
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$widget = ob_get_clean();
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echo $widget;
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endif;
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}
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}
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/** @see WP_Widget->update */
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function update( $new_instance, $old_instance ) {
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global $woocommerce;
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if (!isset($new_instance['title']) || empty($new_instance['title'])) $new_instance['title'] = $woocommerce->attribute_label($new_instance['attribute']);
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$instance['title'] = strip_tags(stripslashes($new_instance['title']));
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$instance['attribute'] = stripslashes($new_instance['attribute']);
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return $instance;
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}
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/** @see WP_Widget->form */
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function form( $instance ) {
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global $wpdb, $woocommerce;
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?>
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<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:', 'woothemes') ?></label>
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<input type="text" class="widefat" id="<?php echo $this->get_field_id('title'); ?>" name="<?php echo $this->get_field_name('title'); ?>" value="<?php if (isset ( $instance['title'])) {echo esc_attr( $instance['title'] );} ?>" /></p>
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<p><label for="<?php echo $this->get_field_id('attribute'); ?>"><?php _e('Attribute:', 'woothemes') ?></label>
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<select id="<?php echo $this->get_field_id('attribute'); ?>" name="<?php echo $this->get_field_name('attribute'); ?>">
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<?php
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$attribute_taxonomies = $woocommerce->get_attribute_taxonomies();
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if ( $attribute_taxonomies ) :
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foreach ($attribute_taxonomies as $tax) :
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if (taxonomy_exists( $woocommerce->attribute_name($tax->attribute_name))) :
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echo '<option value="'.$tax->attribute_name.'" ';
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if (isset($instance['attribute']) && $instance['attribute']==$tax->attribute_name) :
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echo 'selected="selected"';
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endif;
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echo '>'.$tax->attribute_name.'</option>';
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endif;
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endforeach;
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endif;
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?>
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</select>
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<?php
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}
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} // class WooCommerce_Widget_Layered_Nav
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