Package org.gnome.gtk

Interface ColumnView.ActivateCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

ColumnView

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 ColumnView.ActivateCallback
extends FunctionPointer

Functional interface declaration of the ActivateCallback callback.

See Also:

• run(int)

Method Summary

Modifier and Type	Method	Description
void	run(int position)	Emitted when a row has been activated by the user, usually via activating the GtkListBase|list.activate-item action.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, int) method.
default void	upcall(MemorySegment sourceColumnView, int position)	The upcall method is called from native code.

Method Details

run

void run(int position)

Emitted when a row has been activated by the user, usually via activating the GtkListBase|list.activate-item action.

This allows for a convenient way to handle activation in a columnview. See ListItem.setActivatable(boolean) for details on how to use this signal.

upcall

default void upcall(MemorySegment sourceColumnView,
 int position)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer