Interface FileChooserWidget.DownFolderCallback

All Superinterfaces:
FunctionPointer
Enclosing class:
FileChooserWidget
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 FileChooserWidget.DownFolderCallback extends FunctionPointer

Functional interface declaration of the DownFolderCallback callback.

See Also:

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    run()
    Emitted when the user asks for it.
    default MemorySegment
    toCallback(Arena arena)
    Creates a native function pointer to the upcall(MemorySegment) method.
    default void
    upcall(MemorySegment sourceFileChooserWidget)
    The upcall method is called from native code.

  • Method Details

    • run

      void run()

      Emitted when the user asks for it.

      This is a keybinding signal.

      This is used to make the file chooser go to a child of the current folder in the file hierarchy. The subfolder that will be used is displayed in the path bar widget of the file chooser. For example, if the path bar is showing "/foo/bar/baz", with bar currently displayed, then this will cause the file chooser to switch to the "baz" subfolder.

      The default binding for this signal is Alt-Down.

    • upcall

      default void upcall(MemorySegment sourceFileChooserWidget)
      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(MemorySegment) method.
      Specified by:
      toCallback in interface FunctionPointer
      Parameters:
      arena - the arena in which the function pointer is allocated
      Returns:
      the native function pointer