taxeditor-editor/src/main/java/eu/etaxonomy/taxeditor/editor/name/NameEditorDragListener.java

   1 /**
   2  *
   3  */
   4 package eu.etaxonomy.taxeditor.editor.name;
   5
   6 import org.apache.log4j.Logger;
   7 import org.eclipse.swt.dnd.DND;
   8 import org.eclipse.swt.dnd.DragSourceAdapter;
   9 import org.eclipse.swt.dnd.DragSourceEvent;
  10
  11 import eu.etaxonomy.cdm.model.common.ICdmBase;
  12 import eu.etaxonomy.taxeditor.editor.CdmDataTransfer;
  13
  14 /**
  15  * <p>NameEditorDragListener class.</p>
  16  *
  17  * @author n.hoffmann
  18  * @version $Id: $
  19  */
  20 public class NameEditorDragListener extends DragSourceAdapter {
  21
  22         private static final Logger logger = Logger.getLogger(NameEditorDragListener.class);
  23
  24         private AbstractGroupedContainer container;
  25
  26         /**
  27          * <p>Constructor for NameEditorDragListener.</p>
  28          *
  29          * @param container a {@link eu.etaxonomy.taxeditor.editor.name.AbstractGroupedContainer} object.
  30          */
  31         public NameEditorDragListener(AbstractGroupedContainer container){
  32                 this.container = container;
  33         }
  34
  35         /** {@inheritDoc} */
  36         public void dragFinished(DragSourceEvent event) {
  37                 if(!event.doit)
  38                         return;
  39                 if(event.detail == DND.DROP_MOVE){
  40                         logger.warn("drag finished");
  41                         container.remove();
  42                 }
  43
  44         };
  45
  46         /** {@inheritDoc} */
  47         @Override
  48         public void dragSetData(DragSourceEvent event) {
  49                 ICdmBase[] cdmBaseObjects = new ICdmBase[]{(ICdmBase) container.getData()};
  50                 if(CdmDataTransfer.getInstance().isSupportedType(event.dataType)){
  51                         event.data = cdmBaseObjects;
  52                 }
  53         }
  54
  55         /** {@inheritDoc} */
  56         @Override
  57         public void dragStart(DragSourceEvent event) {
  58                 event.doit = container.getData() != null;
  59         }
  60 }