/**
 * Display a formatted list of products.
 *
 * @param $products
 *   An array of product nids.
 * @ingroup themeable
 */
function theme_uc_catalog_products($products) {
  if (!$products) {
    $output .= '<div class="no-products">'. t('No products are available in this category.') .'</div>';
    return $output;
  }
  else {
    if (variable_get('uc_catalog_grid_display', FALSE)) {
      return theme('uc_catalog_product_grid', $products);
    }
    else {
      $table = tapir_get_table('uc_product_table', $products);
      return drupal_render($table);
    }
  }
}

/**
 * Display a list of products in grid format().
 *
 * @ingroup themeable
 */
function theme_uc_catalog_product_grid($products) {
  $product_table = '<div class="category-grid-products"><table>';
  $count = 0;
  $context = array(
    'revision' => 'themed',
    'type' => 'product',
  );
  foreach ($products as $nid) {
    $product = node_load($nid);
    $context['subject'] = array('node' => $product);

    if ($count == 0) {
      $product_table .= "<tr>";
    }
    elseif ($count % variable_get('uc_catalog_grid_display_width', 3) == 0) {
      $product_table .= "</tr><tr>";
    }

    $titlelink = l($product->title, "node/$nid", array('html' => TRUE));
    if (module_exists('imagecache') && ($field = variable_get('uc_image_'. $product->type, '')) && isset($product->$field) && file_exists($product->{$field}[0]['filepath'])) {
      $imagelink = l(theme('imagecache', 'product_list', $product->{$field}[0]['filepath'], $product->title, $product->title), "node/$nid", array('html' => TRUE));
    }
    else {
      $imagelink = '';
    }

    $product_table .= '<td>';
    if (variable_get('uc_catalog_grid_display_title', TRUE)) {
      $product_table .= '<span class="catalog-grid-title">'. $titlelink .'</span>';
    }
    if (variable_get('uc_catalog_grid_display_model', TRUE)) {
      $product_table .= '<span class="catalog-grid-ref">'. $product->model .'</span>';
    }
    $product_table .= '<span class="catalog-grid-image">'. $imagelink .'</span>';
    if (variable_get('uc_catalog_grid_display_sell_price', TRUE)) {
      $product_table .= '<span class="catalog-grid-sell-price">'. uc_price($product->sell_price, $context) .'</span>';
    }
    if (module_exists('uc_cart') && variable_get('uc_catalog_grid_display_add_to_cart', TRUE)) {
      if (variable_get('uc_catalog_grid_display_attributes', TRUE)) {
        $product_table .= theme('uc_product_add_to_cart', $product);
      }
      else {
        $product_table .= drupal_get_form('uc_catalog_buy_it_now_form_'. $product->nid, $product);
      }
    }
    $product_table .= '</td>';

    $count++;
  }
  $product_table .= "</tr></table></div>";
  return $product_table;
}