Interface WebView.RunColorChooserCallback

All Superinterfaces:
FunctionPointer
Enclosing class:
WebView
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 WebView.RunColorChooserCallback extends FunctionPointer

Functional interface declaration of the RunColorChooserCallback callback.

See Also:

  • Method Details

    • run

      boolean run(@Nullable ColorChooserRequest request)

      This signal is emitted when the user interacts with a HTML element, requesting from WebKit to show a dialog to select a color. To let the application know the details of the color chooser, as well as to allow the client application to either cancel the request or perform an actual color selection, the signal will pass an instance of the WebKitColorChooserRequest in the request argument.

      It is possible to handle this request asynchronously by increasing the reference count of the request.

      The default signal handler will asynchronously run a regular GtkColorChooser for the user to interact with.

      Since:
      2.8

    • upcall

      default int upcall(MemorySegment sourceWebView, MemorySegment request)
      The upcall method is called from native code. The parameters are marshaled and run(ColorChooserRequest) is executed.

    • toCallback

      default MemorySegment toCallback(Arena arena)
      Creates a native function pointer to the upcall(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