Package org.gnome.webkit

Interface GeolocationManager.StartCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

GeolocationManager

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 GeolocationManager.StartCallback
extends FunctionPointer

Functional interface declaration of the StartCallback callback.

See Also:

• run()

Method Summary

Modifier and Type	Method	Description
boolean	run()	The signal is emitted to notify that manager needs to start receiving position updates.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment sourceGeolocationManager)	The upcall method is called from native code.

Method Details

run

boolean run()

The signal is emitted to notify that manager needs to start receiving position updates. After this signal is emitted the user should provide the updates using webkit_geolocation_manager_update_position() every time the position changes, or use webkit_geolocation_manager_failed() in case it isn't possible to determine the current position.

If the signal is not handled, WebKit will try to determine the position using GeoClue if available.

upcall

default int upcall(MemorySegment sourceGeolocationManager)

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

toCallback

default MemorySegment toCallback(Arena arena)

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

Specified by:

toCallback in interface FunctionPointer

Parameters:

arena - the function pointer will be allocated in this arena

Returns:

the native function pointer