eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/workingSet/TaxonNodeDropAdapter.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.editor.workingSet;
  10
  11 import java.util.Set;
  12
  13 import org.eclipse.jface.util.LocalSelectionTransfer;
  14 import org.eclipse.jface.viewers.ISelection;
  15 import org.eclipse.jface.viewers.IStructuredSelection;
  16 import org.eclipse.jface.viewers.ITreeSelection;
  17 import org.eclipse.jface.viewers.ViewerDropAdapter;
  18 import org.eclipse.swt.dnd.TransferData;
  19
  20 import eu.etaxonomy.cdm.api.service.ITaxonNodeService;
  21 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  22 import eu.etaxonomy.cdm.persistence.dto.TaxonNodeDto;
  23 import eu.etaxonomy.taxeditor.editor.l10n.Messages;
  24 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  25 import eu.etaxonomy.taxeditor.store.CdmStore;
  26
  27 /**
  28  * @author pplitzner
  29  * @since Dec 19, 2017
  30  *
  31  */
  32 public class TaxonNodeDropAdapter extends ViewerDropAdapter {
  33
  34     private WorkingSetEditor workingSetEditor;
  35
  36     public TaxonNodeDropAdapter(WorkingSetEditor workingSetEditor) {
  37         super(workingSetEditor.getTaxonTreeViewer());
  38         this.workingSetEditor = workingSetEditor;
  39     }
  40
  41     /**
  42      * {@inheritDoc}
  43      */
  44     @Override
  45     public boolean performDrop(Object data) {
  46         TaxonNodeDto taxonNodeDto = (TaxonNodeDto) ((ITreeSelection) data).getFirstElement();
  47         TaxonNode taxonNode = CdmStore.getService(ITaxonNodeService.class).load(taxonNodeDto.getUuid());
  48         //check if node belongs to same classification
  49         Set<TaxonNode> taxonSubtreeFilter = workingSetEditor.getWorkingSet().getTaxonSubtreeFilter();
  50         if(taxonSubtreeFilter!=null && !taxonSubtreeFilter.isEmpty()){
  51             if(!taxonSubtreeFilter.iterator().next().getClassification().equals(taxonNode.getClassification())){
  52                 MessagingUtils.warningDialog(Messages.TaxonNodeDropAdapter_CLASSIFICATIONS_NO_MATCH, this.getClass(),
  53                         Messages.TaxonNodeDropAdapter_CLASSIFICATIONS_NO_MATCH_MESSAGE);
  54                 return false;
  55             }
  56
  57         }
  58         workingSetEditor.addTaxonNode(taxonNode);
  59         return true;
  60     }
  61
  62     /**
  63      * {@inheritDoc}
  64      */
  65     @Override
  66     public boolean validateDrop(Object target, int operation, TransferData transferType) {
  67         ISelection selection = LocalSelectionTransfer.getTransfer().getSelection();
  68         if(selection instanceof ITreeSelection
  69                 && ((IStructuredSelection) selection).size()==1
  70                 && ((IStructuredSelection) selection).getFirstElement() instanceof TaxonNodeDto){
  71             return true;
  72         }
  73         return false;
  74     }
  75
  76
  77 }