1 /*
2 *
3 * Fosstrak LLRP Commander (www.fosstrak.org)
4 *
5 * Copyright (C) 2008 ETH Zurich
6 *
7 * This program is free software: you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation, either version 3 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>
19 *
20 */
21
22 package org.fosstrak.llrp.commander.editors.graphical;
23
24 import org.eclipse.jface.viewers.ITreeContentProvider;
25 import org.eclipse.jface.viewers.Viewer;
26 import org.fosstrak.llrp.commander.util.LLRPTreeMaintainer;
27
28 /**
29 * Content Provider for the message tree.
30 *
31 * @author Ulrich Etter, ETHZ
32 *
33 */
34 class LLRPTreeContentProvider implements ITreeContentProvider {
35
36 private LLRPTreeMaintainer treeMaintainer;
37
38 public LLRPTreeContentProvider(LLRPTreeMaintainer treeMaintainer){
39 this.treeMaintainer = treeMaintainer;
40 }
41
42 /* (non-Javadoc)
43 * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
44 */
45 public void inputChanged(Viewer v, Object oldInput, Object newInput) {
46 }
47
48 /* (non-Javadoc)
49 * @see org.eclipse.jface.viewers.IContentProvider#dispose()
50 */
51 public void dispose() {
52 }
53
54 /* (non-Javadoc)
55 * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
56 */
57 public Object[] getElements(Object inputElement) {
58 return new Object[]{((LLRPTreeMaintainer) inputElement).getRoot()};
59 }
60
61 /* (non-Javadoc)
62 * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
63 */
64 public Object getParent(Object child) {
65 return treeMaintainer.getParent(child);
66 }
67
68 /* (non-Javadoc)
69 * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
70 */
71 public Object[] getChildren(Object parent) {
72 java.util.List<Object> children = treeMaintainer.getNonNullChildren(parent);
73 return children.toArray(new Object[0]);
74 }
75
76 /* (non-Javadoc)
77 * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
78 */
79 public boolean hasChildren(Object parent) {
80 if (getChildren(parent).length > 0){
81 return true;
82 }
83 else{
84 return false;
85 }
86 }
87 }