1
|
/**
|
2
|
* Copyright (C) 2014 EDIT
|
3
|
* European Distributed Institute of Taxonomy
|
4
|
* http://www.e-taxonomy.eu
|
5
|
*
|
6
|
* The contents of this file are subject to the Mozilla Public License Version 1.1
|
7
|
* See LICENSE.TXT at the top of this package for the full license terms.
|
8
|
*/
|
9
|
package eu.etaxonomy.taxeditor.editor.view.derivate;
|
10
|
|
11
|
import org.eclipse.core.runtime.Status;
|
12
|
import org.eclipse.jface.util.LocalSelectionTransfer;
|
13
|
import org.eclipse.jface.viewers.TreeNode;
|
14
|
import org.eclipse.jface.viewers.ViewerDropAdapter;
|
15
|
import org.eclipse.swt.dnd.DND;
|
16
|
import org.eclipse.swt.dnd.DropTargetEvent;
|
17
|
import org.eclipse.swt.dnd.TransferData;
|
18
|
|
19
|
import eu.etaxonomy.taxeditor.editor.EditorUtil;
|
20
|
import eu.etaxonomy.taxeditor.editor.l10n.Messages;
|
21
|
import eu.etaxonomy.taxeditor.editor.view.derivate.operation.MoveDerivateOperation;
|
22
|
import eu.etaxonomy.taxeditor.model.AbstractUtility;
|
23
|
import eu.etaxonomy.taxeditor.model.MessagingUtils;
|
24
|
|
25
|
/**
|
26
|
* @author pplitzner
|
27
|
* @date 18.03.2014
|
28
|
*
|
29
|
*/
|
30
|
public class DerivateDropListener extends ViewerDropAdapter {
|
31
|
|
32
|
private final DerivateView derivateView;
|
33
|
|
34
|
protected DerivateDropListener(DerivateView derivateView) {
|
35
|
super(derivateView.getViewer());
|
36
|
this.derivateView = derivateView;
|
37
|
}
|
38
|
|
39
|
@Override
|
40
|
public boolean performDrop(Object data) {
|
41
|
if(derivateView.isDirty()){
|
42
|
MessagingUtils.warningDialog(DerivateView.VIEW_HAS_UNSAVED_CHANGES, this, DerivateView.YOU_NEED_TO_SAVE_BEFORE_PERFORMING_THIS_ACTION);
|
43
|
return false;
|
44
|
}
|
45
|
Object target = getCurrentTarget();
|
46
|
if(target instanceof TreeNode && data instanceof DerivateViewSelection){
|
47
|
DerivateViewSelection derivateViewSelection = (DerivateViewSelection)data;
|
48
|
TreeNode targetNode = (TreeNode) target;
|
49
|
TreeNode draggedNode = EditorUtil.getTreeNodeOfSelection(derivateViewSelection.getSelection());
|
50
|
if(draggedNode!=null){
|
51
|
MoveDerivateOperation moveDerivateOperation = new MoveDerivateOperation(String.format(Messages.DerivateDropListener_MOVE_TO, derivateView.getLabelProvider().getDerivateText(draggedNode), derivateView.getLabelProvider().getDerivateText(targetNode)), EditorUtil.getUndoContext(), derivateView, draggedNode, targetNode);
|
52
|
return AbstractUtility.executeOperation(moveDerivateOperation).equals(Status.OK_STATUS)?true:false;
|
53
|
}
|
54
|
}
|
55
|
return false;
|
56
|
}
|
57
|
|
58
|
@Override
|
59
|
public boolean validateDrop(Object target, int operation, TransferData transferType) {
|
60
|
return LocalSelectionTransfer.getTransfer().isSupportedType(transferType) && target instanceof TreeNode;
|
61
|
}
|
62
|
|
63
|
/**
|
64
|
* {@inheritDoc}
|
65
|
*/
|
66
|
@Override
|
67
|
public void dragOver(DropTargetEvent event) {
|
68
|
super.dragOver(event);
|
69
|
event.feedback = DND.FEEDBACK_SELECT | DND.FEEDBACK_SCROLL;
|
70
|
}
|
71
|
|
72
|
}
|