woocommerce/widgets/widget-recently_viewed.php

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<?php
/**
* Recent Products Widget
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*
* @author WooThemes
* @category Widgets
* @package WooCommerce/Widgets
* @version 1.6.4
* @extends WP_Widget
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*/
class WooCommerce_Widget_Recently_Viewed extends WP_Widget {
var $woo_widget_cssclass;
var $woo_widget_description;
var $woo_widget_idbase;
var $woo_widget_name;
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/**
* constructor
*
* @access public
* @return void
*/
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function WooCommerce_Widget_Recently_Viewed() {
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/* Widget variable settings. */
$this->woo_widget_cssclass = 'widget_recently_viewed_products';
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$this->woo_widget_description = __( 'Display a list of recently viewed products.', 'woocommerce' );
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$this->woo_widget_idbase = 'woocommerce_recently_viewed_products';
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$this->woo_widget_name = __('WooCommerce Recently Viewed Products', 'woocommerce' );
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/* Widget settings. */
$widget_ops = array( 'classname' => $this->woo_widget_cssclass, 'description' => $this->woo_widget_description );
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/* Create the widget. */
$this->WP_Widget('recently_viewed_products', $this->woo_widget_name, $widget_ops);
add_action( 'save_post', array(&$this, 'flush_widget_cache') );
add_action( 'deleted_post', array(&$this, 'flush_widget_cache') );
add_action( 'switch_theme', array(&$this, 'flush_widget_cache') );
}
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/**
* widget function.
*
* @see WP_Widget
* @access public
* @param array $args
* @param array $instance
* @return void
*/
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function widget($args, $instance) {
global $woocommerce;
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$cache = wp_cache_get('recently_viewed_products', 'widget');
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if ( !is_array($cache) ) $cache = array();
if ( isset($cache[$args['widget_id']]) ) {
echo $cache[$args['widget_id']];
return;
}
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if ( empty( $woocommerce->session->viewed_products ) ) return;
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ob_start();
extract($args);
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$title = apply_filters('widget_title', empty($instance['title']) ? __('Recently viewed', 'woocommerce') : $instance['title'], $instance, $this->id_base);
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if ( !$number = (int) $instance['number'] )
$number = 10;
else if ( $number < 1 )
$number = 1;
else if ( $number > 15 )
$number = 15;
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$query_args = array('posts_per_page' => $number, 'no_found_rows' => 1, 'post_status' => 'publish', 'post_type' => 'product', 'post__in' => $woocommerce->session->viewed_products, 'orderby' => 'rand');
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$query_args['meta_query'] = array();
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$query_args['meta_query'][] = $woocommerce->query->stock_status_meta_query();
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$r = new WP_Query($query_args);
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if ($r->have_posts()) :
?>
<?php echo $before_widget; ?>
<?php if ( $title ) echo $before_title . $title . $after_title; ?>
<ul class="product_list_widget">
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<?php while ($r->have_posts()) : $r->the_post(); global $product; ?>
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<li><a href="<?php the_permalink() ?>" title="<?php echo esc_attr(get_the_title() ? get_the_title() : get_the_ID()); ?>">
<?php if (has_post_thumbnail()) the_post_thumbnail('shop_thumbnail'); else echo '<img src="'. woocommerce_placeholder_img_src() .'" alt="Placeholder" width="'.$woocommerce->get_image_size('shop_thumbnail_image_width').'" height="'.$woocommerce->get_image_size('shop_thumbnail_image_height').'" />'; ?>
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<?php if ( get_the_title() ) the_title(); else the_ID(); ?>
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</a> <?php echo $product->get_price_html(); ?></li>
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<?php endwhile; ?>
</ul>
<?php echo $after_widget; ?>
<?php
// Reset the global $the_post as this query will have stomped on it
wp_reset_query();
endif;
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$content = ob_get_clean();
if ( isset( $args['widget_id'] ) ) $cache[$args['widget_id']] = $content;
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echo $content;
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wp_cache_set('recently_viewed_products', $cache, 'widget');
}
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/**
* update function.
*
* @see WP_Widget->update
* @access public
* @param array $new_instance
* @param array $old_instance
* @return array
*/
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function update( $new_instance, $old_instance ) {
$instance = $old_instance;
$instance['title'] = strip_tags($new_instance['title']);
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$instance['number'] = (int) $new_instance['number'];
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$this->flush_widget_cache();
$alloptions = wp_cache_get( 'alloptions', 'options' );
if ( isset($alloptions['recently_viewed_products']) ) delete_option('recently_viewed_products');
return $instance;
}
function flush_widget_cache() {
wp_cache_delete('recently_viewed_products', 'widget');
}
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/**
* form function.
*
* @see WP_Widget->form
* @access public
* @param array $instance
* @return void
*/
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function form( $instance ) {
$title = isset($instance['title']) ? esc_attr($instance['title']) : '';
if ( !isset($instance['number']) || !$number = (int) $instance['number'] ) $number = 5;
$show_variations = isset( $instance['show_variations'] ) ? (bool) $instance['show_variations'] : false;
?>
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<p><label for="<?php echo $this->get_field_id('title'); ?>"><?php _e('Title:', 'woocommerce'); ?></label>
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<input class="widefat" id="<?php echo esc_attr( $this->get_field_id('title') ); ?>" name="<?php echo esc_attr( $this->get_field_name('title') ); ?>" type="text" value="<?php echo esc_attr( $title ); ?>" /></p>
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<p><label for="<?php echo $this->get_field_id('number'); ?>"><?php _e('Number of products to show:', 'woocommerce'); ?></label>
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<input id="<?php echo esc_attr( $this->get_field_id('number') ); ?>" name="<?php echo esc_attr( $this->get_field_name('number') ); ?>" type="text" value="<?php echo esc_attr( $number ); ?>" size="3" /></p>
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<?php
}
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}
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/**
* Track product views
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*
* @access public
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* @package WooCommerce/Widgets
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* @return void
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*/
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function woocommerce_track_product_view() {
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global $post, $product, $woocommerce;
$viewed_products = $woocommerce->session->viewed_products;
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if ( empty( $woocommerce->session->viewed_products ) )
$viewed_products = array();
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if ( ! in_array( $post->ID, $viewed_products ) )
$viewed_products[] = $post->ID;
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if ( sizeof( $viewed_products ) > 15 )
array_shift( $viewed_products );
$woocommerce->session->viewed_products = $viewed_products;
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}
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add_action( 'woocommerce_before_single_product', 'woocommerce_track_product_view', 10);