eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/handler/DynamicFeatureMenu.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.editor.view.descriptive.handler;
  12
  13 import org.eclipse.jface.action.ContributionItem;
  14 import org.eclipse.jface.action.IContributionItem;
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.jface.viewers.IStructuredSelection;
  17 import org.eclipse.swt.events.SelectionEvent;
  18 import org.eclipse.swt.events.SelectionListener;
  19 import org.eclipse.swt.widgets.Event;
  20 import org.eclipse.swt.widgets.Menu;
  21 import org.eclipse.swt.widgets.MenuItem;
  22 import org.eclipse.ui.ISelectionService;
  23 import org.eclipse.ui.actions.CompoundContributionItem;
  24 import org.eclipse.ui.handlers.IHandlerService;
  25
  26 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  27 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  28 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  29 import eu.etaxonomy.cdm.model.description.Feature;
  30 import eu.etaxonomy.cdm.model.description.FeatureNode;
  31 import eu.etaxonomy.cdm.model.description.FeatureTree;
  32 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  33 import eu.etaxonomy.taxeditor.editor.view.descriptive.DescriptiveViewPart;
  34 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.CreateDescriptionElementOperation;
  35 import eu.etaxonomy.taxeditor.model.FeatureNodeContainer;
  36 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  37 import eu.etaxonomy.taxeditor.store.CdmStore;
  38
  39 /**
  40  * <p>
  41  * DynamicFeatureMenu class.
  42  * </p>
  43  *
  44  * @author n.hoffmann
  45  * @created 17.04.2009
  46  * @version 1.0
  47  */
  48 public class DynamicFeatureMenu extends CompoundContributionItem {
  49
  50         private final ISelectionService selectionService = EditorUtil.getActivePart()
  51                         .getSite().getWorkbenchWindow().getSelectionService();
  52         private final IHandlerService handlerService = (IHandlerService) EditorUtil
  53                         .getService(IHandlerService.class);
  54
  55         /*
  56          * (non-Javadoc)
  57          *
  58          * @see
  59          * org.eclipse.ui.actions.CompoundContributionItem#getContributionItems()
  60          */
  61         /** {@inheritDoc} */
  62         @Override
  63         protected IContributionItem[] getContributionItems() {
  64
  65                 return new IContributionItem[] { new ContributionItem() {
  66                         @Override
  67             public void fill(Menu menu, int index) {
  68
  69                                 ISelection selection = selectionService
  70                                                 .getSelection(DescriptiveViewPart.ID);
  71
  72                                 if (selection instanceof IStructuredSelection) {
  73                                         IStructuredSelection structuredSelection = (IStructuredSelection) selection;
  74                                         Object selectedElement = structuredSelection
  75                                                         .getFirstElement();
  76
  77                                         if (selectedElement instanceof DescriptionBase<?>) {
  78                                                 FeatureTree featureTree = getFeatureTree((DescriptionBase<?>) selectedElement);
  79
  80                                                 for (FeatureNode childNode : featureTree.getRootChildren()) {
  81                                                         createMenuItem(menu, childNode.getFeature());
  82
  83                                                 }
  84                                         } else if (selectedElement instanceof FeatureNodeContainer) {
  85                                                 FeatureNode featureNode = ((FeatureNodeContainer) selectedElement)
  86                                                                 .getFeatureNode();
  87
  88                                                 // add the feature to the menu
  89                                                 createMenuItem(menu, featureNode.getFeature());
  90
  91                                                 // add possible children to the menu
  92                                                 for (FeatureNode childNode : featureNode.getChildNodes()) {
  93                                                         createMenuItem(menu, childNode.getFeature());
  94                                                 }
  95                                         } else if (selectedElement instanceof DescriptionElementBase) {
  96                                                 Feature feature = ((DescriptionElementBase) selectedElement)
  97                                                                 .getFeature();
  98                                                 createMenuItem(menu, feature);
  99                                         }
 100                                 }
 101                         }
 102                 } };
 103         }
 104
 105         private void createMenuItem(Menu menu, final Feature feature) {
 106                 MenuItem menuItem = new MenuItem(menu, -1);
 107                 final Feature deproxiedFeature = (Feature) HibernateProxyHelper
 108                                 .deproxy(feature);
 109
 110                 menuItem.setText(deproxiedFeature.getLabel());
 111                 menuItem.addSelectionListener(new SelectionListener() {
 112
 113                         @Override
 114             public void widgetDefaultSelected(SelectionEvent e) {
 115                         }
 116
 117                         @Override
 118             public void widgetSelected(SelectionEvent ev) {
 119                                 Event event = new Event();
 120                                 event.data = deproxiedFeature;
 121                                 try {
 122                                         handlerService.executeCommand(
 123                                                         CreateDescriptionElementOperation.ID, event);
 124                                 } catch (Exception e) {
 125                                         EditorUtil.error(getClass(), e);
 126                                 }
 127                         }
 128                 });
 129
 130         }
 131
 132         /**
 133          * Retrieves the feature tree associated with the given description
 134          *
 135          * TODO as of now this is always the same thing because feature trees may
 136          * not be associated to descriptions yet.
 137          *
 138          * @param description
 139          * @return
 140          */
 141         private FeatureTree getFeatureTree(DescriptionBase description) {
 142                 FeatureTree featureTree = null;
 143
 144                 // TODO change this to the feature tree associated with this taxon
 145                 // description
 146                 if (description.hasStructuredData()) {
 147                         featureTree = PreferencesUtil
 148                                         .getDefaultFeatureTreeForStructuredDescription();
 149                 } else {
 150                         featureTree = PreferencesUtil
 151                                         .getDefaultFeatureTreeForTextualDescription();
 152                 }
 153
 154                 if (featureTree == null) {
 155                         featureTree = FeatureTree.NewInstance(CdmStore.getTermManager()
 156                                         .getPreferredTerms(Feature.class));
 157                 }
 158
 159                 return featureTree;
 160         }
 161 }