Package org.gnome.webkit

Interface WebContext.UserMessageReceivedCallback

All Superinterfaces:

FunctionPointer

Enclosing class:

WebContext

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 WebContext.UserMessageReceivedCallback
extends FunctionPointer

Functional interface declaration of the UserMessageReceivedCallback callback.

See Also:

• run(org.gnome.webkit.UserMessage)

Method Summary

Modifier and Type	Method	Description
boolean	run(UserMessage message)	This signal is emitted when a WebKitUserMessage is received from a web process extension.
default MemorySegment	toCallback(Arena arena)	Creates a native function pointer to the upcall(java.lang.foreign.MemorySegment, java.lang.foreign.MemorySegment) method.
default int	upcall(MemorySegment sourceWebContext, MemorySegment message)	The upcall method is called from native code.

Method Details

run

boolean run(UserMessage message)

This signal is emitted when a WebKitUserMessage is received from a web process extension. You can reply to the message using webkit_user_message_send_reply().

You can handle the user message asynchronously by calling g_object_ref() on message and returning true.

upcall

default int upcall(MemorySegment sourceWebContext,
 MemorySegment message)

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

toCallback

default MemorySegment toCallback(Arena arena)

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