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ef906471 | 1 | /******************************************************************************* |
ed902a2b | 2 | * Copyright (c) 2013, 2014 Kalray |
ef906471 XR |
3 | * |
4 | * All rights reserved. This program and the accompanying materials are | |
5 | * made available under the terms of the Eclipse Public License v1.0 which | |
6 | * accompanies this distribution, and is available at | |
7 | * http://www.eclipse.org/legal/epl-v10.html | |
8 | * | |
9 | * Contributors: | |
10 | * Xavier Raynaud - Initial API and implementation | |
11 | *******************************************************************************/ | |
12 | ||
2bdf0193 | 13 | package org.eclipse.tracecompass.tmf.ui.views.filter; |
ef906471 XR |
14 | |
15 | import org.eclipse.jface.util.LocalSelectionTransfer; | |
16 | import org.eclipse.jface.viewers.ISelection; | |
17 | import org.eclipse.jface.viewers.IStructuredSelection; | |
2bdf0193 | 18 | import org.eclipse.tracecompass.tmf.core.filter.model.ITmfFilterTreeNode; |
ef906471 XR |
19 | |
20 | /** | |
21 | * Utilities for cut/copy/paste/dnd in filter view | |
22 | * @author Xavier Raynaud <xavier.raynaud@kalray.eu> | |
23 | */ | |
24 | class FilterEditUtils { | |
25 | ||
26 | /** | |
27 | * Gets the ITmfFilterTreeNode in LocalSelectionTransfer, if any | |
28 | * @return a ITmfFilterTreeNode or <code>null</code> | |
29 | */ | |
30 | public static ITmfFilterTreeNode getTransferredTreeNode() { | |
31 | ITmfFilterTreeNode treeNodeToDrop = null; | |
32 | ISelection sel = LocalSelectionTransfer.getTransfer().getSelection(); | |
33 | if (sel instanceof IStructuredSelection) { | |
34 | IStructuredSelection selection = (IStructuredSelection) sel; | |
35 | for (Object data : selection.toList()) { | |
36 | if (!(data instanceof ITmfFilterTreeNode)) { | |
37 | return null; | |
38 | } else if (treeNodeToDrop != null) { | |
39 | // should never occur, since tree has SWT.SINGLE style | |
40 | return null; | |
41 | } else { | |
42 | treeNodeToDrop = (ITmfFilterTreeNode) data; | |
43 | } | |
44 | } | |
45 | } | |
46 | return treeNodeToDrop; | |
47 | } | |
48 | } |