eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/featuretree/FeatureTreeContentProvider.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.featuretree;
  11
  12 import java.util.List;
  13
  14 import org.eclipse.jface.viewers.ITreeContentProvider;
  15 import org.eclipse.jface.viewers.Viewer;
  16
  17 import eu.etaxonomy.cdm.model.term.TermNode;
  18 import eu.etaxonomy.cdm.model.term.TermTree;
  19
  20 /**
  21  * <p>FeatureTreeContentProvider class.</p>
  22  *
  23  * @author n.hoffmann
  24  * @created Aug 5, 2010
  25  * @version 1.0
  26  */
  27 public class FeatureTreeContentProvider implements ITreeContentProvider {
  28
  29         /* (non-Javadoc)
  30          * @see org.eclipse.jface.viewers.IContentProvider#dispose()
  31          */
  32         /** {@inheritDoc} */
  33         @Override
  34         public void dispose() {
  35
  36         }
  37
  38         /* (non-Javadoc)
  39          * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
  40          */
  41         /** {@inheritDoc} */
  42         @Override
  43         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  44
  45         }
  46
  47         /** {@inheritDoc} */
  48         @Override
  49         public Object[] getElements(Object inputElement) {
  50                 return this.getChildren(inputElement);
  51         }
  52
  53         /** {@inheritDoc} */
  54         @Override
  55         public Object[] getChildren(Object parentElement) {
  56                 if(parentElement instanceof TermTree){
  57                         List<TermNode> children = ((TermTree) parentElement).getRootChildren();
  58                         return children.toArray();
  59                 }else if(parentElement instanceof TermNode){
  60                         List<TermNode> children = ((TermNode) parentElement).getChildNodes();
  61                         return children.toArray();
  62                 }else if(parentElement instanceof List){
  63                         return ((List<TermNode>) parentElement).toArray();
  64                 }else{
  65                         return new Object[]{};
  66                 }
  67         }
  68
  69         /** {@inheritDoc} */
  70         @Override
  71         public Object getParent(Object element) {
  72             if(element instanceof TermNode){
  73                 return ((TermNode) element).getParent();
  74             }
  75                 return null;
  76         }
  77
  78         /** {@inheritDoc} */
  79         @Override
  80         public boolean hasChildren(Object element) {
  81                 return getChildren(element).length != 0;
  82         }
  83 }