Class DropTargetAdapter

  • All Implemented Interfaces:
    java.util.EventListener, DropTargetListener, SWTEventListener
    Direct Known Subclasses:
    DropTargetEffect

    public class DropTargetAdapter
    extends java.lang.Object
    implements DropTargetListener
    This adapter class provides default implementations for the methods described by the DropTargetListener interface.

    Classes that wish to deal with DropTargetEvents can extend this class and override only the methods which they are interested in.

    Please note, there are subtle difference in DND behavior on different OS's. For example during a file transfer, Windows will put out the file path as soon as the drag begins, where as Linux will make it available only on a drop operation. For correct crossplatform behavior, it is recommended to delay OS interaction until drop has occurred or verify the correctness of the operation across platforms.

    See Also:
    DropTargetListener, DropTargetEvent, Sample code and further information, Eclipse corner article on DND
    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      void dragEnter​(DropTargetEvent event)
      This implementation of dragEnter permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType.
      void dragLeave​(DropTargetEvent event)
      This implementation of dragLeave does nothing.
      void dragOperationChanged​(DropTargetEvent event)
      This implementation of dragOperationChanged permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType.
      void dragOver​(DropTargetEvent event)
      This implementation of dragOver permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType.
      void drop​(DropTargetEvent event)
      This implementation of drop does nothing.
      void dropAccept​(DropTargetEvent event)
      This implementation of dropAccept permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType.
      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
    • Constructor Detail

      • DropTargetAdapter

        public DropTargetAdapter()
    • Method Detail

      • dragEnter

        public void dragEnter​(DropTargetEvent event)
        This implementation of dragEnter permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType. For additional information see DropTargetListener.dragEnter.
        Specified by:
        dragEnter in interface DropTargetListener
        Parameters:
        event - the information associated with the drag enter event
        See Also:
        DropTargetEvent
      • dragLeave

        public void dragLeave​(DropTargetEvent event)
        This implementation of dragLeave does nothing. For additional information see DropTargetListener.dragOperationChanged.
        Specified by:
        dragLeave in interface DropTargetListener
        Parameters:
        event - the information associated with the drag leave event
        See Also:
        DropTargetEvent
      • dragOperationChanged

        public void dragOperationChanged​(DropTargetEvent event)
        This implementation of dragOperationChanged permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType. For additional information see DropTargetListener.dragOperationChanged.
        Specified by:
        dragOperationChanged in interface DropTargetListener
        Parameters:
        event - the information associated with the drag operation changed event
        See Also:
        DropTargetEvent
      • dragOver

        public void dragOver​(DropTargetEvent event)
        This implementation of dragOver permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType. For additional information see DropTargetListener.dragOver.
        Specified by:
        dragOver in interface DropTargetListener
        Parameters:
        event - the information associated with the drag over event
        See Also:
        DropTargetEvent
      • drop

        public void drop​(DropTargetEvent event)
        This implementation of drop does nothing. For additional information see DropTargetListener.drop.
        Specified by:
        drop in interface DropTargetListener
        Parameters:
        event - the information associated with the drop event
        See Also:
        DropTargetEvent
      • dropAccept

        public void dropAccept​(DropTargetEvent event)
        This implementation of dropAccept permits the default operation defined in event.detailto be performed on the current data type defined in event.currentDataType. For additional information see DropTargetListener.dropAccept.
        Specified by:
        dropAccept in interface DropTargetListener
        Parameters:
        event - the information associated with the drop accept event
        See Also:
        DropTargetEvent