public function set_items_from_cart( $cart ) {
		$this->items     = array();
		$this->discounts = array();

		if ( ! is_a( $cart, 'WC_Cart' ) ) {
			return;
		}

		$this->object = $cart;

		foreach ( $cart->get_cart() as $key => $cart_item ) {
			$item                = new stdClass();
			$item->key           = $key;
			$item->object        = $cart_item;
			$item->product       = $cart_item['data'];
			$item->quantity      = $cart_item['quantity'];
			$item->price         = wc_add_number_precision_deep( $item->product->get_price() * $item->quantity );
			$this->items[ $key ] = $item;
		}

		uasort( $this->items, array( $this, 'sort_by_price' ) );
	}