Interface WidgetActionActivateFunc

All Superinterfaces:

FunctionPointer

Functional Interface:

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

@FunctionalInterface
@Generated("org.javagi.JavaGI")
public interface WidgetActionActivateFunc
extends FunctionPointer

Functional interface declaration of the WidgetActionActivateFunc callback.

See Also:

• run(Widget, String, Variant)

Method Summary

Modifier and Type	Method	Description
void	run(Widget widget, String actionName, @Nullable Variant parameter)	The type of the callback functions used for activating actions installed with WidgetClass.installAction.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(MemorySegment, MemorySegment, MemorySegment) method.
default void	upcall(MemorySegment widget, MemorySegment actionName, MemorySegment parameter)	The upcall method is called from native code.

Method Details

run

void run(Widget widget,
 String actionName,
 @Nullable Variant parameter)

The type of the callback functions used for activating actions installed with WidgetClass.installAction.

The parameter must match the parameterType of the action.

Parameters:

widget - the widget to which the action belongs

actionName - the action name

parameter - parameter for activation

upcall

default void upcall(MemorySegment widget,
 MemorySegment actionName,
 MemorySegment parameter)

The upcall method is called from native code. The parameters are marshaled and run(Widget, String, Variant) is executed.

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the arena in which the function pointer is allocated

Returns:

the native function pointer