Interface WebView.ContextMenuCallback

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.ContextMenuCallback extends FunctionPointer

Functional interface declaration of the ContextMenuCallback callback.

See Also:

  • Method Details

    • run

      boolean run(@Nullable ContextMenu contextMenu, @Nullable HitTestResult hitTestResult)

      Emitted when a context menu is about to be displayed to give the application a chance to customize the proposed menu, prevent the menu from being displayed, or build its own context menu. To customize the proposed menu you can use webkit_context_menu_prepend(), webkit_context_menu_append() or webkit_context_menu_insert() to add new WebKitContextMenuItems to contextMenu, webkit_context_menu_move_item() to reorder existing items, or webkit_context_menu_remove() to remove an existing item. The signal handler should return false, and the menu represented by contextMenu will be shown. To prevent the menu from being displayed you can just connect to this signal and return true so that the proposed menu will not be shown. To build your own menu, you can remove all items from the proposed menu with webkit_context_menu_remove_all(), add your own items and return false so that the menu will be shown. You can also ignore the proposed WebKitContextMenu, build your own GtkMenu and return true to prevent the proposed menu from being shown. If you just want the default menu to be shown always, simply don't connect to this signal because showing the proposed context menu is the default behaviour.

      If the signal handler returns false the context menu represented by contextMenu will be shown, if it return true the context menu will not be shown.

      The proposed WebKitContextMenu passed in contextMenu argument is only valid during the signal emission.

    • upcall

      default int upcall(MemorySegment sourceWebView, MemorySegment contextMenu, MemorySegment hitTestResult)
      The upcall method is called from native code. The parameters are marshaled and run(ContextMenu, HitTestResult) is executed.

    • toCallback

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