taxeditor-navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/NavigatorSynonymContentProvider.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 java.util.ArrayList;
  14 import java.util.List;
  15
  16 import org.apache.log4j.Logger;
  17 import org.eclipse.jface.viewers.ITreeContentProvider;
  18 import org.eclipse.jface.viewers.Viewer;
  19
  20 import eu.etaxonomy.cdm.model.taxon.Synonym;
  21 import eu.etaxonomy.cdm.model.taxon.Taxon;
  22 import eu.etaxonomy.cdm.model.taxon.TaxonBase;
  23 import eu.etaxonomy.taxeditor.editor.name.IterableSynonymyList;
  24
  25 /**
  26  * @author p.ciardelli
  27  * @created 02.06.2009
  28  * @version 1.0
  29  */
  30 public class NavigatorSynonymContentProvider implements ITreeContentProvider {
  31         private static final Logger logger = Logger
  32                         .getLogger(NavigatorSynonymContentProvider.class);
  33
  34         private static final Object[] NO_CHILDREN = new Object[0];
  35
  36         public Object[] getChildren(Object parentElement) {
  37                 Object[] children = null;
  38                 if (parentElement instanceof Synonym) {
  39                         children = NO_CHILDREN;
  40                 } else if (parentElement instanceof Taxon) {
  41                         List<TaxonBase> list = new ArrayList<TaxonBase>();
  42
  43                         for (TaxonBase taxonBase : new IterableSynonymyList((Taxon) parentElement)) {
  44                                 if (taxonBase instanceof Synonym) {
  45                                         list.add(taxonBase);
  46                                 }
  47                         }
  48                         children = list.toArray();
  49                 }
  50                 return children != null ? children : NO_CHILDREN;
  51         }
  52
  53         public Object getParent(Object element) {
  54                 return null;
  55         }
  56
  57         public boolean hasChildren(Object element) {
  58                 return this.getChildren(element).length > 0;
  59         }
  60
  61         public Object[] getElements(Object inputElement) {
  62                 return this.getChildren(inputElement);
  63         }
  64
  65         public void dispose() {
  66         }
  67
  68         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  69         }
  70 }