Interface ImportHandler

    • Method Detail

      • canImport

        boolean canImport​(DnDParameter parameter)
        This method is called right before either an import is dispatched (DropEvent), or when a DragOverEvent takes place. Here can the in the parameters contained values be used to check if this handler can successfully handle a drop. From the registered ImportHandler only one should return true.
        Parameters:
        parameter - The parameter containing the event.
        Returns:
        Return true if this handler can handle the given event and contained types, false otherwise.
      • importDrop

        void importDrop​(DnDParameter parameter)
        The method is responsible for handling the drop and the given data. It is called on a DropEvent.
        Parameters:
        parameter - The parameter containing the event.
      • adjustDropEffect

        void adjustDropEffect​(DnDParameter parameter)
        Mainly used to make fix adjustments to the DataTransfer.DropEffect of the event. Normally the dropEffect is controlled by pressing the ctrl or shift key. But maybe some handler require a fix setting of the effect. It is called on every DragOverEvent if this handler can import the given event. The dropEffect is used to control the feedback to the origin of the drag/drop-event
        Parameters:
        parameter - The parameter containing the event.
      • dropDone

        void dropDone​(DnDParameter parameter,
                      ImportHandler usedHandler)
        This method is used to cleanup data after a drop was completed.
        Parameters:
        parameter - The parameter containing the event. In this case the event is still the DropEvent
        usedHandler - The handler that was used to import the given drop.