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<?php
/**
* Cart Item Bag
*/
namespace Omnipay\Common;
/**
* Cart Item Bag
*
* This class defines a bag (multi element set or array) of single cart items
* in the Omnipay system.
*
*/
class ItemBag implements \IteratorAggregate, \Countable
{
/**
* Item storage
*
*
* @var array
*/
protected $items;
/**
* Constructor
*
* @param array $items An array of items
*/
public function __construct(array $items = array())
{
$this->replace($items);
}
/**
* Return all the items
*
*
* @return array An array of items
*/
public function all()
{
return $this->items;
}
/**
* Replace the contents of this bag with the specified items
*
*
* @param array $items An array of items
*/
public function replace(array $items = array())
{
$this->items = array();
foreach ($items as $item) {
$this->add($item);
}
}
/**
* Add an item to the bag
*
*
* @param ItemInterface|array $item An existing item, or associative array of item parameters
*/
public function add($item)
{
if ($item instanceof ItemInterface) {
$this->items[] = $item;
} else {
$this->items[] = new Item($item);
}
}
/**
* Returns an iterator for items
*
* @return \ArrayIterator An \ArrayIterator instance
*/
public function getIterator(): \Traversable
{
return new \ArrayIterator($this->items);
}
/**
* Returns the number of items
*
* @return int The number of items
*/
public function count(): int
{
return count($this->items);
}
}