did select code

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        
        let cell = receiptsTableView.dequeueReusableCellWithIdentifier("receiptCell", forIndexPath: indexPath) as! ReceiptTableViewCell
        
        switch selectedRow {
        case nil:
            selectedRow = indexPath
            receiptIsOpen = true
            cellVarticalPosition = receiptsTableView.contentOffset.y
        default:
            if selectedRow! == indexPath {
                
                selectedRow = nil
                receiptIsOpen = false
            } else {
                
                selectedRow = indexPath
                receiptIsOpen = true
            }
        }
        
        if receiptIsOpen == false {
            
            receiptsTableView.scrollEnabled = true
            UIView.animateWithDuration(0.2, animations: {
                self.navigationBar.alpha = 1.0
                self.receiptsTableView.center.y += self.navigationBar.frame.height
                self.receiptsTableView.frame.size.height -= self.navigationBar.frame.height
            })
            
            tableView.contentOffset.y = cellVarticalPosition
        } else {

            receiptsTableView.scrollEnabled = false
            UIView.animateWithDuration(0.2, animations: {
                self.navigationBar.alpha = 0.0
                self.receiptsTableView.center.y -= self.navigationBar.frame.height
                self.receiptsTableView.frame.size.height += self.navigationBar.frame.height
            })

        }
        
        
        tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: .None)
        
        if receiptIsOpen != false {
            
            receiptsTableView.scrollToRowAtIndexPath(selectedRow!, atScrollPosition: .Top, animated: true)
            
            cell.animateEdgeView()
            reloadInputViews()

        } else {
            
            cell.reverseAnimateWithDuration()
            reloadInputViews()

        }
        
    }