eu.etaxonomy.taxeditor.navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/SynonymContentProvider.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9
  10 package eu.etaxonomy.taxeditor.navigation.navigator;
  11
  12 import java.util.ArrayList;
  13 import java.util.List;
  14
  15 import org.apache.log4j.Logger;
  16 import org.eclipse.jface.viewers.ITreeContentProvider;
  17 import org.eclipse.jface.viewers.Viewer;
  18
  19 import eu.etaxonomy.cdm.model.taxon.Synonym;
  20 import eu.etaxonomy.cdm.model.taxon.Taxon;
  21 import eu.etaxonomy.cdm.model.taxon.TaxonBase;
  22 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  23
  24 /**
  25  * <p>SynonymContentProvider class.</p>
  26  *
  27  * @author p.ciardelli
  28  * @created 02.06.2009
  29  * @version 1.0
  30  */
  31 public class SynonymContentProvider implements ITreeContentProvider {
  32         private static final Logger logger = Logger
  33                         .getLogger(SynonymContentProvider.class);
  34
  35         private static final Object[] NO_CHILDREN = new Object[0];
  36
  37         /** {@inheritDoc} */
  38         public Object[] getChildren(Object parentElement) {
  39                 Object[] children = null;
  40                 if (parentElement instanceof Synonym) {
  41                         children = NO_CHILDREN;
  42                 } else if (parentElement instanceof TaxonNode) {
  43                         List<TaxonBase> list = new ArrayList<TaxonBase>();
  44
  45                         Taxon taxon = ((TaxonNode) parentElement).getTaxon();
  46
  47                         for (TaxonBase taxonBase : new IterableSynonymyList(taxon)) {
  48                                 if (taxonBase instanceof Synonym) {
  49                                         list.add(taxonBase);
  50                                 }
  51                         }
  52                         children = list.toArray();
  53                 }
  54                 return children != null ? children : NO_CHILDREN;
  55         }
  56
  57         /** {@inheritDoc} */
  58         public Object getParent(Object element) {
  59                 return null;
  60         }
  61
  62         /** {@inheritDoc} */
  63         public boolean hasChildren(Object element) {
  64                 return this.getChildren(element).length > 0;
  65         }
  66
  67         /** {@inheritDoc} */
  68         public Object[] getElements(Object inputElement) {
  69                 return this.getChildren(inputElement);
  70         }
  71
  72         /**
  73          * <p>dispose</p>
  74          */
  75         public void dispose() {
  76         }
  77
  78         /** {@inheritDoc} */
  79         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  80         }
  81 }