taxeditor-navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/TaxonNodeContentProvider.java

   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.TaxonNode;
  18
  19 /**
  20  * @author p.ciardelli
  21  * @created 02.06.2009
  22  * @version 1.0
  23  */
  24 public class TaxonNodeContentProvider implements ITreeContentProvider {
  25         private static final Logger logger = Logger
  26                         .getLogger(TaxonNodeContentProvider.class);
  27
  28         public Object[] getChildren(Object parentElement) {
  29
  30                 if (parentElement instanceof TaxonNode) {
  31                         return ((TaxonNode) parentElement).getChildNodes().toArray();
  32                 }
  33
  34                 return new Object[0];
  35         }
  36
  37         public Object getParent(Object element) {
  38                 if(element instanceof TaxonNode){
  39                         return ((TaxonNode) element).getParent();
  40                 }
  41                 return null;
  42         }
  43
  44         public boolean hasChildren(Object element) {
  45
  46                 boolean length = this.getChildren(element).length > 0;
  47
  48                 return length;
  49         }
  50
  51         public Object[] getElements(Object inputElement) {
  52                 return this.getChildren(inputElement);
  53         }
  54
  55         public void dispose() {
  56         }
  57
  58         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  59         }
  60 }