Notification of deletion of unprinted dishes and current user

In API V7 we added a notification about deleting unprinted dishes BeforeDeleteNonPrintedItems, and also forwarded the current user responsible for the operation being performed to some events.

Removal of unprinted dishes can be interrupted by throwing OperationCanceledException in the handler. A notification is generated both when you try to delete a dish from the Syrve POS UI, and when you try to delete it from the API.

Notifications and methods that began to accept the input of the current user, performing a particular operation:

• BeforeOrderBill — bill of lading, printing a duplicate bill of the order;
• OrderBillCancelled — cancellation of pre-check order;
• BeforeDeleteOrder — deleting an order;
• OrderSplittedByCashRegisters — division of an order into several cash ragisters;
• OrderStorned — order cancellation;
• BeforeDeletePrintedItems — deleting printed dishes in an order;
• BeforeDeleteNonPrintedItems — deleting unprinted dishes in an order;
• ICashRegister.DoZReport — printing a Z-report during the closing of a cash register shift on a plug-in cash register;
• ICashRegister.DoXReport — printing X-report on a plug-in cash register;
• ICashRegister.DoOpenSession — opening a cash register shift on a plug-in cash register;
• ICashRegister.OpenDrawer
• opening the cash drawer on a plug-in cash register.