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.model.MessagingUtils;
  37 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  38 import eu.etaxonomy.taxeditor.store.CdmStore;
  39
  40 /**
  41  * <p>
  42  * DynamicFeatureMenu class.
  43  * </p>
  44  *
  45  * @author n.hoffmann
  46  * @created 17.04.2009
  47  * @version 1.0
  48  */
  49 public class DynamicFeatureMenu extends CompoundContributionItem {
  50
  51         private final ISelectionService selectionService = EditorUtil.getActivePart()
  52                         .getSite().getWorkbenchWindow().getSelectionService();
  53         private final IHandlerService handlerService = (IHandlerService) EditorUtil
  54                         .getService(IHandlerService.class);
  55
  56         /*
  57          * (non-Javadoc)
  58          *
  59          * @see
  60          * org.eclipse.ui.actions.CompoundContributionItem#getContributionItems()
  61          */
  62         /** {@inheritDoc} */
  63         @Override
  64         protected IContributionItem[] getContributionItems() {
  65
  66                 return new IContributionItem[] { new ContributionItem() {
  67                         @Override
  68             public void fill(Menu menu, int index) {
  69
  70                                 ISelection selection = selectionService
  71                                                 .getSelection(DescriptiveViewPart.ID);
  72
  73                                 if (selection instanceof IStructuredSelection) {
  74                                         IStructuredSelection structuredSelection = (IStructuredSelection) selection;
  75                                         Object selectedElement = structuredSelection
  76                                                         .getFirstElement();
  77
  78                                         if (selectedElement instanceof DescriptionBase<?>) {
  79                                                 FeatureTree featureTree = getFeatureTree((DescriptionBase<?>) selectedElement);
  80
  81                                                 for (FeatureNode childNode : featureTree.getRootChildren()) {
  82                                                         createMenuItem(menu, childNode.getFeature());
  83
  84                                                 }
  85                                         } else if (selectedElement instanceof FeatureNodeContainer) {
  86                                                 FeatureNode featureNode = ((FeatureNodeContainer) selectedElement)
  87                                                                 .getFeatureNode();
  88
  89                                                 // add the feature to the menu
  90                                                 createMenuItem(menu, featureNode.getFeature());
  91
  92                                                 // add possible children to the menu
  93                                                 for (FeatureNode childNode : featureNode.getChildNodes()) {
  94                                                         createMenuItem(menu, childNode.getFeature());
  95                                                 }
  96                                         } else if (selectedElement instanceof DescriptionElementBase) {
  97                                                 Feature feature = ((DescriptionElementBase) selectedElement)
  98                                                                 .getFeature();
  99                                                 createMenuItem(menu, feature);
 100                                         }
 101                                 }
 102                         }
 103                 } };
 104         }
 105
 106         private void createMenuItem(Menu menu, final Feature feature) {
 107                 MenuItem menuItem = new MenuItem(menu, -1);
 108                 final Feature deproxiedFeature = (Feature) HibernateProxyHelper
 109                                 .deproxy(feature);
 110
 111                 menuItem.setText(deproxiedFeature.getLabel());
 112                 menuItem.addSelectionListener(new SelectionListener() {
 113
 114                         @Override
 115             public void widgetDefaultSelected(SelectionEvent e) {
 116                         }
 117
 118                         @Override
 119             public void widgetSelected(SelectionEvent ev) {
 120                                 Event event = new Event();
 121                                 event.data = deproxiedFeature;
 122                                 try {
 123                                         handlerService.executeCommand(
 124                                                         CreateDescriptionElementOperation.ID, event);
 125                                 } catch (Exception e) {
 126                                         MessagingUtils.error(getClass(), e);
 127                                 }
 128                         }
 129                 });
 130
 131         }
 132
 133         /**
 134          * Retrieves the feature tree associated with the given description
 135          *
 136          * TODO as of now this is always the same thing because feature trees may
 137          * not be associated to descriptions yet.
 138          *
 139          * @param description
 140          * @return
 141          */
 142         private FeatureTree getFeatureTree(DescriptionBase description) {
 143                 FeatureTree featureTree = null;
 144
 145                 // TODO change this to the feature tree associated with this taxon
 146                 // description
 147                 if (description.hasStructuredData()) {
 148                         featureTree = PreferencesUtil
 149                                         .getDefaultFeatureTreeForStructuredDescription();
 150                 } else {
 151                         featureTree = PreferencesUtil
 152                                         .getDefaultFeatureTreeForTextualDescription();
 153                 }
 154
 155                 if (featureTree == null) {
 156                         featureTree = FeatureTree.NewInstance(CdmStore.getTermManager()
 157                                         .getPreferredTerms(Feature.class));
 158                 }
 159
 160                 return featureTree;
 161         }
 162 }