3 * Copyright (C) 2014 EDIT
4 * European Distributed Institute of Taxonomy
5 * http://www.e-taxonomy.eu
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.
10 package eu
.etaxonomy
.taxeditor
.editor
.view
.derivate
;
12 import org
.eclipse
.core
.runtime
.Status
;
13 import org
.eclipse
.jface
.util
.LocalSelectionTransfer
;
14 import org
.eclipse
.jface
.viewers
.TreeNode
;
15 import org
.eclipse
.jface
.viewers
.ViewerDropAdapter
;
16 import org
.eclipse
.swt
.dnd
.DND
;
17 import org
.eclipse
.swt
.dnd
.DropTargetEvent
;
18 import org
.eclipse
.swt
.dnd
.TransferData
;
20 import eu
.etaxonomy
.taxeditor
.editor
.EditorUtil
;
21 import eu
.etaxonomy
.taxeditor
.editor
.view
.derivate
.operation
.MoveDerivateOperation
;
22 import eu
.etaxonomy
.taxeditor
.model
.AbstractUtility
;
23 import eu
.etaxonomy
.taxeditor
.model
.MessagingUtils
;
30 public class DerivateDropListener
extends ViewerDropAdapter
{
32 private final DerivateView derivateView
;
34 protected DerivateDropListener(DerivateView derivateView
) {
35 super(derivateView
.getViewer());
36 this.derivateView
= derivateView
;
40 * @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object)
43 public boolean performDrop(Object data
) {
44 if(derivateView
.isDirty()){
45 MessagingUtils
.warningDialog("View has unsaved changes", this, "You need to save before performing this action");
48 Object target
= getCurrentTarget();
49 if(target
instanceof TreeNode
&& data
instanceof DerivateViewSelection
){
50 DerivateViewSelection derivateViewSelection
= (DerivateViewSelection
)data
;
51 TreeNode targetNode
= (TreeNode
) target
;
52 TreeNode draggedNode
= EditorUtil
.getTreeNodeOfSelection(derivateViewSelection
.getSelection());
53 if(draggedNode
!=null){
54 MoveDerivateOperation moveDerivateOperation
= new MoveDerivateOperation("Moving \""+derivateView
.getLabelProvider().getDerivateText(draggedNode
)+"\" to \""+derivateView
.getLabelProvider().getDerivateText(targetNode
)+"\"", EditorUtil
.getUndoContext(), derivateView
, draggedNode
, targetNode
);
55 return AbstractUtility
.executeOperation(moveDerivateOperation
).equals(Status
.OK_STATUS
)?
true:false;
62 * @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
65 public boolean validateDrop(Object target
, int operation
, TransferData transferType
) {
66 return LocalSelectionTransfer
.getTransfer().isSupportedType(transferType
) && target
instanceof TreeNode
;
73 public void dragOver(DropTargetEvent event
) {
74 super.dragOver(event
);
75 event
.feedback
= DND
.FEEDBACK_SELECT
| DND
.FEEDBACK_SCROLL
;