eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/featuretree/e4/FeatureNodeDropAdapter.java

   1 /**
   2 * Copyright (C) 2017 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 package eu.etaxonomy.taxeditor.featuretree.e4;
  10
  11 import java.net.URI;
  12 import java.util.Arrays;
  13 import java.util.Collection;
  14 import java.util.Collections;
  15
  16 import org.eclipse.e4.ui.model.application.ui.MDirtyable;
  17 import org.eclipse.jface.util.LocalSelectionTransfer;
  18 import org.eclipse.jface.viewers.IStructuredSelection;
  19 import org.eclipse.jface.viewers.TreeViewer;
  20 import org.eclipse.jface.viewers.Viewer;
  21 import org.eclipse.jface.viewers.ViewerDropAdapter;
  22 import org.eclipse.swt.dnd.TransferData;
  23
  24 import eu.etaxonomy.cdm.api.service.IFeatureNodeService;
  25 import eu.etaxonomy.cdm.model.common.OrderedTermVocabulary;
  26 import eu.etaxonomy.cdm.model.common.TermVocabulary;
  27 import eu.etaxonomy.cdm.model.description.Feature;
  28 import eu.etaxonomy.cdm.model.description.FeatureNode;
  29 import eu.etaxonomy.cdm.model.description.FeatureTree;
  30 import eu.etaxonomy.taxeditor.editor.definedterm.TermTransfer;
  31 import eu.etaxonomy.taxeditor.featuretree.FeatureNodeTransfer;
  32 import eu.etaxonomy.taxeditor.l10n.Messages;
  33 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  34 import eu.etaxonomy.taxeditor.store.CdmStore;
  35 import eu.etaxonomy.taxeditor.ui.dialog.selection.TermVocabularySelectionDialog;
  36 import eu.etaxonomy.taxeditor.view.webimport.termimport.wrapper.OntologyTermWrapper;
  37
  38 public class FeatureNodeDropAdapter extends ViewerDropAdapter {
  39
  40     private MDirtyable dirtyable;
  41
  42     public FeatureNodeDropAdapter(MDirtyable dirtyable, Viewer viewer) {
  43                 super(viewer);
  44                 this.dirtyable = dirtyable;
  45         }
  46
  47         @Override
  48         public boolean performDrop(Object data) {
  49                 Object currentTarget = getCurrentTarget();
  50                 FeatureNode target = null;
  51                 if(currentTarget instanceof FeatureTree){
  52                     target = ((FeatureTree) currentTarget).getRoot();
  53                 }
  54                 else if(currentTarget instanceof FeatureNode){
  55                     target = (FeatureNode) currentTarget;
  56                 }
  57                 int position = 0;
  58
  59                 if (target != null) {
  60                         int location = getCurrentLocation();
  61                         FeatureNode parent = target.getParent();
  62                         if(parent!=null){
  63                             if (location == LOCATION_BEFORE) {
  64                                 position = Math.max(0, parent.getIndex(target) - 1);
  65                                 target = parent;
  66                             }
  67
  68                             if (location == LOCATION_AFTER) {
  69                                 position = parent.getIndex(target);
  70                                 target = parent;
  71                             }
  72                         }
  73                 }
  74
  75         if(target==null){
  76             MessagingUtils.warningDialog(Messages.FeatureNodeDropAdapter_INVALID_TARGET, this, Messages.FeatureNodeDropAdapter_INVALID_TARGET_MESSAGE);
  77             return false;
  78         }
  79                 Collection<Object> droppedObjects = Collections.emptyList();
  80                 if(data instanceof Object[]){
  81                     droppedObjects = Arrays.asList((Object[])data);
  82                 }
  83                 else if(data instanceof IStructuredSelection){
  84                     droppedObjects = ((IStructuredSelection) data).toList();
  85                 }
  86                 TreeViewer viewer = (TreeViewer) getViewer();
  87
  88                 // cannot drop a feature node onto itself
  89                 for (Object droppedObject : droppedObjects) {
  90                     if(droppedObject==null){
  91                         MessagingUtils.warningDialog("Move failed", this.getClass(),
  92                                 "Moving the feature node failed. Try saving before.");
  93                         return false;
  94                     }
  95                         if (droppedObject.equals(target)) {
  96                                 return false;
  97                         }
  98                 }
  99                 for (Object droppedObject : droppedObjects) {
 100                     if(droppedObject instanceof FeatureNode){
 101                         FeatureNode droppedNode = (FeatureNode) droppedObject;
 102                         CdmStore.getService(IFeatureNodeService.class).moveFeatureNode(droppedNode.getUuid(), target.getUuid(), position);
 103                         viewer.reveal(droppedNode);
 104                     }
 105                     else if(droppedObject instanceof Feature){
 106                         Feature droppedFeature = (Feature) droppedObject;
 107                         CdmStore.getService(IFeatureNodeService.class).addChildFeatureNode(target.getUuid(), droppedFeature.getUuid());
 108                     }
 109                     else if(droppedObject instanceof OntologyTermWrapper){
 110                         OntologyTermWrapper wrapper = (OntologyTermWrapper)droppedObject;
 111                         TermVocabulary vocabulary = wrapper.getTermVocabulary();
 112                         if(vocabulary==null){
 113                             vocabulary =  TermVocabularySelectionDialog.select(
 114                                     "Choose vocabulary for import", viewer.getControl().getShell(), null);
 115                             if(vocabulary instanceof OrderedTermVocabulary){
 116                                 MessagingUtils.warningDialog("Import not possible", this,
 117                                         "The chosen vocabulary is an ordered vocabulary.\n"
 118                                                 + "Importing into ordered vocabularies is currently not supported.");
 119                                 return false;
 120                             }
 121                         }
 122                         if(vocabulary==null){
 123                             return false;
 124                         }
 125                         else{
 126                             Feature feature = Feature.NewInstance(wrapper.getDescription(), wrapper.getLabel(), null);
 127                             feature.setUri(URI.create(wrapper.getUri()));
 128                             vocabulary.addTerm(feature);
 129                             CdmStore.getService(IFeatureNodeService.class).createChildFeatureNode(target, feature);
 130                         }
 131                     }
 132                 }
 133                 dirtyable.setDirty(true);
 134                 viewer.refresh();
 135                 return true;
 136         }
 137
 138     @Override
 139     public boolean validateDrop(Object target, int operation, TransferData transferData) {
 140         boolean isSupported = FeatureNodeTransfer.getInstance().isSupportedType(transferData);
 141         isSupported |= TermTransfer.getInstance().isSupportedType(transferData);
 142         isSupported |= LocalSelectionTransfer.getTransfer().isSupportedType(transferData);
 143         isSupported &= getViewer().getInput()!=null;
 144         return isSupported;
 145     }
 146
 147 }