/**
* Public function that creates a single instance
*/
public static function getInstance()
{
if (!isset(self::$_instance)) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Handle drawing list of delivery methods
* @param array $tag_params
* @param array $children
*/
public function tag_DeliveryMethodsList($tag_params, $children)
{
$manager = ShopDeliveryMethodsManager::getInstance();
$conditions = array();
$item_id = -1;
$selected = -1;
if (isset($tag_params['item'])) {
$item_id = fix_id($tag_params['item']);
}
if (isset($tag_params['selected'])) {
$selected = fix_id($tag_params['selected']);
}
// delivery method list needs to be filtered by the items in shooping cart
if (isset($tag_params['shopping_cart']) && $tag_params['shopping_cart'] == 1) {
$relations_manager = ShopDeliveryItemRelationsManager::getInstance();
$prices_manager = ShopDeliveryMethodPricesManager::getInstance();
$items_manager = ShopItemManager::getInstance();
$cart = isset($_SESSION['shopping_cart']) ? $_SESSION['shopping_cart'] : array();
$uid_list = array_keys($cart);
if (count($uid_list) == 0) {
return;
}
// shopping cart contains only UIDs, we need IDs
$id_list = array();
$items = $items_manager->getItems(array('id'), array('uid' => $uid_list));
if (count($items) > 0) {
foreach ($items as $item) {
$id_list[] = $item->id;
}
}
// get item relations to delivery methods
$relations = $relations_manager->getItems($relations_manager->getFieldNames(), array('item' => $id_list));
$price_list = array();
$price_count = array();
if (count($relations) > 0) {
foreach ($relations as $relation) {
$price_list[] = $relation->price;
if (!array_key_exists($relation->price, $price_count)) {
$price_count[$relation->price] = 0;
}
// store number of times price is used
$price_count[$relation->price]++;
}
}
$relations = $prices_manager->getItems(array('id', 'method'), array('id' => $price_list));
$method_count = array();
if (count($relations) > 0) {
foreach ($relations as $relation) {
$key = $relation->method;
if (!array_key_exists($key, $method_count)) {
$method_count[$key] = 0;
}
// increase method usage count with number of price usages
$method_count[$key] += $price_count[$relation->id];
}
}
// We compare number of items with method associated with
// that item. Methods that have number same as number of items
// are supported and we include them in list.
$border_count = count($id_list);
$valid_methods = array();
if (count($method_count) > 0) {
foreach ($method_count as $id => $count) {
if ($count == $border_count) {
$valid_methods[] = $id;
}
}
}
if (count($valid_methods) > 0) {
$conditions['id'] = $valid_methods;
} else {
$conditions['id'] = -1;
}
// filter by location
$shop_location = isset($this->_parent->settings['shop_location']) ? $this->_parent->settings['shop_location'] : '';
if (!empty($shop_location)) {
$same_country = $shop_location == $_SESSION['buyer']['country'];
if ($same_country) {
$conditions['domestic'] = 1;
} else {
$conditions['international'] = 1;
}
}
}
// get template
$template = $this->_parent->loadTemplate($tag_params, 'delivery_methods_list_item.xml');
$template->registerTagHandler('_price_list', $this, 'tag_DeliveryPricesList');
// get items from database
$items = $manager->getItems($manager->getFieldNames(), $conditions);
if (count($items) > 0) {
foreach ($items as $item) {
$params = array('id' => $item->id, 'name' => $item->name, 'international' => $item->international, 'international_char' => $item->international ? CHAR_CHECKED : CHAR_UNCHECKED, 'domestic' => $item->domestic, 'domestic_char' => $item->domestic ? CHAR_CHECKED : CHAR_UNCHECKED, 'item' => $item_id, 'selected' => $selected == $item->id ? 1 : 0, 'item_change' => url_MakeHyperlink($this->_parent->getLanguageConstant('change'), window_Open('shop_delivery_method_change', 370, $this->_parent->getLanguageConstant('title_delivery_method_change'), true, true, url_Make('transfer_control', 'backend_module', array('module', $this->name), array('backend_action', 'delivery_methods'), array('sub_action', 'change'), array('id', $item->id)))), 'item_delete' => url_MakeHyperlink($this->_parent->getLanguageConstant('delete'), window_Open('shop_delivery_method_delete', 400, $this->_parent->getLanguageConstant('title_delivery_method_delete'), false, false, url_Make('transfer_control', 'backend_module', array('module', $this->name), array('backend_action', 'delivery_methods'), array('sub_action', 'delete'), array('id', $item->id)))), 'item_prices' => url_MakeHyperlink($this->_parent->getLanguageConstant('prices'), window_Open('shop_delivery_method_prices', 370, $this->_parent->getLanguageConstant('title_delivery_method_prices'), true, false, url_Make('transfer_control', 'backend_module', array('module', $this->name), array('backend_action', 'delivery_methods'), array('sub_action', 'prices'), array('id', $item->id)))));
$template->setLocalParams($params);
$template->restoreXML();
$template->parse();
}
}
}
