eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/editor/definedterm/DefinedTermDropAdapter.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2009 EDIT
   4 * European Distributed Institute of Taxonomy
   5 * http://www.e-taxonomy.eu
   6 *
   7 * The contents of this file are subject to the Mozilla Public License Version 1.1
   8 * See LICENSE.TXT at the top of this package for the full license terms.
   9 */
  10 package eu.etaxonomy.taxeditor.editor.definedterm;
  11
  12 import java.util.ArrayList;
  13 import java.util.Collection;
  14
  15 import org.eclipse.jface.viewers.StructuredSelection;
  16 import org.eclipse.jface.viewers.ViewerDropAdapter;
  17 import org.eclipse.swt.dnd.DND;
  18 import org.eclipse.swt.dnd.DropTargetEvent;
  19 import org.eclipse.swt.dnd.TransferData;
  20
  21 import eu.etaxonomy.cdm.model.common.DefinedTermBase;
  22 import eu.etaxonomy.cdm.model.common.OrderedTermBase;
  23 import eu.etaxonomy.cdm.model.common.TermBase;
  24 import eu.etaxonomy.taxeditor.editor.definedterm.operation.MoveDefinedTermOperation;
  25 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  26 import eu.etaxonomy.taxeditor.store.StoreUtil;
  27
  28 /**
  29  * @author l.morris
  30  * @date 10 Jan 2012
  31  *
  32  */
  33 public class DefinedTermDropAdapter extends ViewerDropAdapter {
  34
  35         private final DefinedTermEditor editor;
  36         /**
  37          * @param viewer
  38          */
  39         protected DefinedTermDropAdapter(DefinedTermEditor editor) {
  40                 super(editor.getViewer());
  41                 this.editor = editor;
  42         }
  43
  44         /* (non-Javadoc)
  45          * @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object)
  46          */
  47         @Override
  48         public boolean performDrop(Object data) {
  49
  50                 TermBase target = (TermBase) getCurrentTarget();//can be vocab
  51                 int currentLocation = getCurrentLocation();
  52                 //DefinedTermBase[] droppedElements = (DefinedTermBase[]) data;
  53                 Object[] droppedTerms = (Object[]) data;
  54                 Collection<DefinedTermBase> sourceTerms = new ArrayList<DefinedTermBase>(); //Arrays.asList(droppedElements)
  55
  56                 for (Object droppedTerm : droppedTerms) {
  57
  58                         DefinedTermBase term = (DefinedTermBase) droppedTerm;
  59                         sourceTerms.add(term);
  60
  61                 }
  62
  63                 AbstractPostOperation operation = new MoveDefinedTermOperation("Move Descriptions",
  64                         StoreUtil.getUndoContext(),
  65                         target,
  66                         sourceTerms,
  67                         editor,
  68                         currentLocation);
  69                 //TODO: implement execute
  70                 StoreUtil.executeOperation(operation);
  71                 // select the newly moved objects
  72                 editor.getViewer().setSelection(new StructuredSelection(sourceTerms.toArray(new TermBase[sourceTerms.size()])));
  73
  74                 return true;
  75         }
  76
  77         /* (non-Javadoc)
  78          * @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
  79          */
  80         @Override
  81         public boolean validateDrop(Object target, int operation,
  82                         TransferData transferType) {
  83                 boolean transferDataIsSupported = TermTransfer.getInstance().isSupportedType(transferType);
  84                 // maybe don't need this - they will be all TermBase anyway
  85                 return target instanceof TermBase && transferDataIsSupported;
  86         }
  87
  88         /* (non-Javadoc)
  89          * @see org.eclipse.jface.viewers.ViewerDropAdapter#dragOver(org.eclipse.swt.dnd.DropTargetEvent)
  90          */
  91         @Override
  92         public void dragOver(DropTargetEvent event) {
  93             super.dragOver(event);
  94             TermBase target = (TermBase) getCurrentTarget();
  95             if(!(target instanceof OrderedTermBase)) {
  96                 // this is to only disable insert between items
  97                 event.feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL;
  98             }
  99
 100
 101         }
 102
 103 }