taxeditor-navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/NavigatorTaxonomicTreeContentProvider.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.TaxonomicTree;
  18
  19 /**
  20  * @author n.hoffmann
  21  * @created 17.06.2009
  22  * @version 1.0
  23  */
  24 public class NavigatorTaxonomicTreeContentProvider implements ITreeContentProvider {
  25         private static final Logger logger = Logger
  26                         .getLogger(NavigatorTaxonomicTreeContentProvider.class);
  27
  28         /* (non-Javadoc)
  29          * @see org.eclipse.jface.viewers.ITreeContentProvider#getChildren(java.lang.Object)
  30          */
  31         public Object[] getChildren(Object parentElement) {
  32                 if (parentElement instanceof NavigatorRoot) {
  33                         return ((NavigatorRoot) parentElement).getParentBeans().toArray();
  34                 }
  35
  36                 if(parentElement instanceof TaxonomicTree) {
  37                         return ((TaxonomicTree) parentElement).getRootNodes().toArray();
  38                 }
  39
  40                 return new Object[0];
  41         }
  42
  43         /* (non-Javadoc)
  44          * @see org.eclipse.jface.viewers.ITreeContentProvider#getParent(java.lang.Object)
  45          */
  46         public Object getParent(Object element) {
  47                 return null;
  48         }
  49
  50         /* (non-Javadoc)
  51          * @see org.eclipse.jface.viewers.ITreeContentProvider#hasChildren(java.lang.Object)
  52          */
  53         public boolean hasChildren(Object element) {
  54                 return this.getChildren(element).length > 0;
  55         }
  56
  57         /* (non-Javadoc)
  58          * @see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)
  59          */
  60         public Object[] getElements(Object inputElement) {
  61                 return this.getChildren(inputElement);
  62         }
  63
  64         /* (non-Javadoc)
  65          * @see org.eclipse.jface.viewers.IContentProvider#dispose()
  66          */
  67         public void dispose() {
  68         }
  69
  70         /* (non-Javadoc)
  71          * @see org.eclipse.jface.viewers.IContentProvider#inputChanged(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
  72          */
  73         public void inputChanged(Viewer viewer, Object oldInput, Object newInput) {
  74         }
  75 }