eclipseprojects/eu.etaxonomy.taxeditor/src/eu/etaxonomy/taxeditor/controller/TreeController.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.controller;
  11
  12 import org.apache.log4j.Logger;
  13 import org.eclipse.ui.IViewPart;
  14
  15 import eu.etaxonomy.taxeditor.navigation.TaxonomicTreeView;
  16 import eu.etaxonomy.taxeditor.navigation.TaxonomicTreeViewer;
  17
  18 /**
  19  * @author n.hoffmann
  20  * @created 20.01.2009
  21  * @version 1.0
  22  */
  23 public class TreeController {
  24         private static final Logger logger = Logger.getLogger(TreeController.class);
  25         private static IViewPart treeView;
  26
  27         /**
  28          * Returns the <code>TaxonomicTreeViewer</code> used for navigation. Not to
  29          * be confused with the window that contains it, <code>TaxonomicTreeView</code>.
  30          *
  31          * @return
  32          */
  33         public static TaxonomicTreeViewer getTreeViewer() {
  34                 TaxonomicTreeView view = getTreeView();
  35                 if (view == null) {
  36                         return null;
  37                 }
  38                 return view.getTreeViewer();
  39         }
  40
  41         /**
  42          * @see eu.etaxonomy.taxeditor.navigation.TaxonomicTreeView#createTreeViewer()
  43          *
  44          * @return
  45          */
  46         public static TaxonomicTreeViewer createTreeViewer() {
  47                 TaxonomicTreeView view = getTreeView();
  48                 if (view == null) {
  49                         return null;
  50                 }
  51                 return view.createTreeViewer();
  52         }
  53
  54         /**
  55          * Returns the <code>TaxonomicTreeView</code> containing the
  56          * <code>TaxonomicTreeViewer</code> used for navigation.
  57          *
  58          * @return
  59          */
  60         public static TaxonomicTreeView getTreeView() {
  61                 if (treeView == null) {
  62                         treeView = GlobalController.getViewById(TaxonomicTreeView.ID);
  63                         if (!(treeView instanceof TaxonomicTreeView)) {
  64                                 treeView = null;
  65                         }
  66                 }
  67                 return (TaxonomicTreeView) treeView;
  68         }
  69
  70
  71 }