|
1
|
// $Id$
|
|
2
|
/**
|
|
3
|
* Copyright (C) 2007 EDIT
|
|
4
|
* European Distributed Institute of Taxonomy
|
|
5
|
* http://www.e-taxonomy.eu
|
|
6
|
*
|
|
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.
|
|
9
|
*/
|
|
10
|
|
|
11
|
package eu.etaxonomy.taxeditor.navigation.navigator;
|
|
12
|
|
|
13
|
import org.apache.log4j.Logger;
|
|
14
|
import org.eclipse.jface.viewers.ITreeContentProvider;
|
|
15
|
import org.eclipse.jface.viewers.Viewer;
|
|
16
|
|
|
17
|
import eu.etaxonomy.cdm.model.taxon.ITreeNode;
|
|
18
|
import eu.etaxonomy.cdm.model.taxon.TaxonNode;
|
|
19
|
|
|
20
|
/**
|
|
21
|
* <p>TaxonNodeContentProvider class.</p>
|
|
22
|
*
|
|
23
|
* @author p.ciardelli
|
|
24
|
* @created 02.06.2009
|
|
25
|
* @version 1.0
|
|
26
|
*/
|
|
27
|
public class TaxonNodeContentProvider implements ITreeContentProvider {
|
|
28
|
private static final Logger logger = Logger
|
|
29
|
.getLogger(TaxonNodeContentProvider.class);
|
|
30
|
|
|
31
|
private static final Object[] NO_CHILDREN = new Object[0];
|
|
32
|
|
|
33
|
/** {@inheritDoc} */
|
|
34
|
public Object[] getChildren(Object parentElement) {
|
|
35
|
Object[] children = null;
|
|
36
|
|
|
37
|
if(parentElement instanceof ITreeNode){
|
|
38
|
children = ((ITreeNode) parentElement).getChildNodes().toArray();
|
|
39
|
}
|
|
40
|
|
|
41
|
return children != null ? children : NO_CHILDREN;
|
|
42
|
}
|
|
43
|
|
|
44
|
/** {@inheritDoc} */
|
|
45
|
public Object getParent(Object element) {
|
|
46
|
if(element instanceof TaxonNode){
|
|
47
|
return ((TaxonNode) element).getParent();
|
|
48
|
}
|
|
49
|
return null;
|
|
50
|
}
|
|
51
|
|
|
52
|
/** {@inheritDoc} */
|
|
53
|
public boolean hasChildren(Object element) {
|
|
54
|
if(element instanceof TaxonNode){
|
|
55
|
return ((TaxonNode) element).getCountChildren() > 0;
|
|
56
|
}
|
|
57
|
return getChildren(element).length > 0;
|
|
58
|
}
|
|
59
|
|
|
60
|
/** {@inheritDoc} */
|
|
61
|
public Object[] getElements(Object inputElement) {
|
|
62
|
return this.getChildren(inputElement);
|
|
63
|
}
|
|
64
|
|
|
65
|
/**
|
|
66
|
* <p>dispose</p>
|
|
67
|
*/
|
|
68
|
public void dispose() {
|
|
69
|
}
|
|
70
|
|
|
71
|
/** {@inheritDoc} */
|
|
72
|
public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
|
|
73
|
}
|
|
74
|
}
|