taxeditor-store/src/main/java/eu/etaxonomy/taxeditor/featuretree/FeatureTreeContentProvider.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.featuretree;
  12
  13 import java.util.List;
  14
  15 import org.eclipse.jface.viewers.ITreeContentProvider;
  16 import org.eclipse.jface.viewers.Viewer;
  17
  18 import eu.etaxonomy.cdm.model.description.FeatureNode;
  19 import eu.etaxonomy.cdm.model.description.FeatureTree;
  20
  21 /**
  22  * <p>FeatureTreeContentProvider class.</p>
  23  *
  24  * @author n.hoffmann
  25  * @created Aug 5, 2010
  26  * @version 1.0
  27  */
  28 public class FeatureTreeContentProvider implements ITreeContentProvider {
  29
  30         /* (non-Javadoc)
  31          * @see org.eclipse.jface.viewers.IContentProvider#dispose()
  32          */
  33         /** {@inheritDoc} */
  34         @Override
  35         public void dispose() {
  36
  37         }
  38
  39         /* (non-Javadoc)
  40          * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
  41          */
  42         /** {@inheritDoc} */
  43         @Override
  44         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  45
  46         }
  47
  48         /* (non-Javadoc)
  49          * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
  50          */
  51         /** {@inheritDoc} */
  52         @Override
  53         public Object[] getElements(Object inputElement) {
  54                 return this.getChildren(inputElement);
  55         }
  56
  57         /** {@inheritDoc} */
  58         @Override
  59         public Object[] getChildren(Object parentElement) {
  60                 if(parentElement instanceof FeatureTree){
  61                         List<FeatureNode> children = ((FeatureTree) parentElement).getRootChildren();
  62                         return children.toArray();
  63                 }else if(parentElement instanceof FeatureNode){
  64                         List<FeatureNode> children = ((FeatureNode) parentElement).getChildren();
  65                         return children.toArray();
  66                 }else if(parentElement instanceof List){
  67                         return ((List) parentElement).toArray();
  68                 }else{
  69                         return new Object[]{};
  70                 }
  71         }
  72
  73         /** {@inheritDoc} */
  74         @Override
  75         public Object getParent(Object element) {
  76                 return null;
  77         }
  78
  79         /** {@inheritDoc} */
  80         @Override
  81         public boolean hasChildren(Object element) {
  82                 return getChildren(element).length != 0;
  83         }
  84 }