Interface PrintOperation.DoneCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

PrintOperation

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public static interface PrintOperation.DoneCallback
extends FunctionPointer

Functional interface declaration of the DoneCallback callback.

See Also:

• run(PrintOperationResult)

Method Summary

Modifier and Type	Method	Description
void	run(PrintOperationResult result)	Emitted when the print operation run has finished doing everything required for printing.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, int) method.
default void	upcall(MemorySegment sourcePrintOperation, int result)	The upcall method is called from native code.

Method Details

run

void run(PrintOperationResult result)

Emitted when the print operation run has finished doing everything required for printing.

result gives you information about what happened during the run. If result is PrintOperationResult.ERROR then you can call PrintOperation.getError() for more information.

If you enabled print status tracking then PrintOperation.isFinished() may still return false after the ::done signal was emitted.

upcall

default void upcall(MemorySegment sourcePrintOperation,
 int result)

The upcall method is called from native code. The parameters are marshaled and run(PrintOperationResult) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

Creates a native function pointer to the upcall(MemorySegment, int) method.

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer