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;
23
24 import org.eclipse.jface.viewers.*;
25
26 /**
27 * Provides the content of an LLRP message for a tree viewer. This content
28 * provider returns the content encoded as an array of BinarySingleValue.
29 * @author Haoning Zhang
30 * @author sawielan
31 *
32 */
33 public class LLRPBinaryContentProvider implements ITreeContentProvider {
34
35 private BinaryMessage message;
36
37 public void inputChanged (Viewer aViewer, Object aOldInput, Object aNewInput) {
38 message = (BinaryMessage) aNewInput;
39 }
40
41 public Object[] getElements(Object aElement) {
42 return getChildren(aElement);
43 }
44
45 /**
46 * @return an array encoding the content of the LLRP message for the
47 * binary editor. The important values are encoded as {@link BinarySingleValue}.
48 */
49 public Object[] getChildren(Object aElement) {
50 if (aElement instanceof BinaryMessage) {
51 BinaryMessage msg = (BinaryMessage) aElement;
52
53 // to achieve a nicer presentation in the binary view, we
54 // use the split parameters instead of one huge binary string.
55
56 BinarySingleValue[] arr = msg.getSplitParameters();
57 int len = 5 + arr.length;
58 BinarySingleValue[] values = new BinarySingleValue[len];
59 values[0] = msg.getReserved();
60 values[1] = msg.getVersion();
61 values[2] = msg.getMsgType();
62 values[3] = msg.getMsgID();
63 values[4] = msg.getMsgLength();
64 //values[5] = msg.getParameters();
65
66 for (int i=5; i<len; i++) {
67 values[i] = arr[i-5];
68 }
69
70 return values;
71 }
72
73 return null;
74 }
75
76 public Object getParent(Object aElement) {
77 if (aElement instanceof BinarySingleValue) {
78 BinarySingleValue value = (BinarySingleValue) aElement;
79 return value.getParent();
80 }
81 return null;
82 }
83
84 public boolean hasChildren(Object aElement) {
85 if (aElement instanceof BinaryMessage) {
86 return true;
87 }
88
89 return false;
90 }
91
92 public void dispose() {
93
94 }
95 }