eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/descriptive/DescriptionElementDropAdapter.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.editor.view.descriptive;
  11
  12 import java.util.ArrayList;
  13 import java.util.Collection;
  14
  15 import org.eclipse.e4.ui.model.application.ui.basic.MPart;
  16 import org.eclipse.jface.viewers.Viewer;
  17 import org.eclipse.swt.dnd.DND;
  18 import org.eclipse.swt.dnd.TransferData;
  19
  20 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  21 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  22 import eu.etaxonomy.cdm.model.description.SpecimenDescription;
  23 import eu.etaxonomy.cdm.model.description.TaxonDescription;
  24 import eu.etaxonomy.cdm.model.description.TaxonNameDescription;
  25 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  26 import eu.etaxonomy.taxeditor.editor.l10n.Messages;
  27 import eu.etaxonomy.taxeditor.editor.name.e4.TaxonNameEditorE4;
  28 import eu.etaxonomy.taxeditor.editor.view.descriptive.e4.FactualDataPartE4;
  29 import eu.etaxonomy.taxeditor.editor.view.descriptive.operation.MoveDescriptionElementsOperation;
  30 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  31 import eu.etaxonomy.taxeditor.operation.AbstractPostTaxonOperation;
  32 import eu.etaxonomy.taxeditor.ui.EditViewerDropAdapter;
  33
  34 /**
  35  * @author n.hoffmann
  36  * @created Feb 8, 2011
  37  * @version 1.0
  38  */
  39 public class DescriptionElementDropAdapter extends EditViewerDropAdapter {
  40
  41     private static final String OPERATION_NOT_SUPPORTED_YET = Messages.DescriptionElementDropAdapter_NOT_SUPPORTED;
  42
  43
  44
  45     /**
  46          * @param viewer
  47          */
  48         public DescriptionElementDropAdapter(Viewer viewer) {
  49                 super(viewer);
  50         }
  51
  52         /* (non-Javadoc)
  53          * @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object)
  54          */
  55         @Override
  56         public boolean performDrop(Object data) {
  57                 DescriptionBase target = (DescriptionBase) getCurrentTarget();
  58                 Object[] droppedElements = (Object[]) data;
  59
  60                 Collection<DescriptionElementBase> descriptionElements = new ArrayList<DescriptionElementBase>();
  61
  62                 boolean isCopy = getCurrentOperation() == DND.DROP_COPY ? true : false;
  63                 DescriptionBase<?> description = null;
  64                 // cannot drop a feature node onto itself
  65                 if (droppedElements != null){
  66                         for (Object droppedElement : droppedElements) {
  67                                 if (droppedElement == null){
  68                                         MessagingUtils.warningDialog(OPERATION_NOT_SUPPORTED_YET, this, Messages.DescriptionElementDropAdapter_NOT_SUPPORTED_NEW_ELEMENT);
  69                                         return false;
  70                                 }
  71                                 if(! (droppedElement instanceof DescriptionElementBase)){
  72                                         return false;
  73                                 }else{
  74                                         DescriptionElementBase descriptionElement = (DescriptionElementBase) droppedElement;
  75
  76                                         if (descriptionElement.getInDescription().equals(target)) {
  77                                                 return false;
  78                                         }
  79                                         for (Object element : target.getElements()){
  80                                             if (element instanceof DescriptionElementBase){
  81                                                if( !((DescriptionElementBase)element).isPersited()){
  82                                                    MessagingUtils.warningDialog(OPERATION_NOT_SUPPORTED_YET, this, Messages.DescriptionElementDropAdapter_NOT_SUPPORTED_NEW_ELEMENT_IN_DESCRIPTION);
  83                                             return false;
  84                                                }
  85
  86                                             }
  87                                         }
  88                                         for (Object element : descriptionElement.getInDescription().getElements()){
  89                         if (element instanceof DescriptionElementBase){
  90                            if( !((DescriptionElementBase)element).isPersited()){
  91                                MessagingUtils.warningDialog(OPERATION_NOT_SUPPORTED_YET, this, Messages.DescriptionElementDropAdapter_NOT_SUPPORTED_NEW_ELEMENT_IN_DESCRIPTION);
  92                                 return false;
  93                            }
  94
  95                         }
  96                     }
  97                                         description = descriptionElement.getInDescription();
  98                                         description.removeElement(descriptionElement);
  99                                         target.addElement(descriptionElement);
 100
 101                                         if (description.getElements().isEmpty() ){
 102                                             if (description instanceof TaxonDescription){
 103                                                 ((TaxonDescription)description).getTaxon().removeDescription((TaxonDescription)description, false);
 104                                             }else if (description instanceof TaxonNameDescription){
 105                                                 ((TaxonNameDescription)description).getTaxonName().removeDescription((TaxonNameDescription)description);
 106                                             } else if (description instanceof SpecimenDescription){
 107                             ((SpecimenDescription)description).getDescribedSpecimenOrObservation().removeDescription(description);
 108                         }
 109                                         }
 110                                         descriptionElements.add(descriptionElement);
 111                                 }
 112                         }
 113                         TaxonNameEditorE4 editor = null;
 114                         Object activePart = EditorUtil.getActivePart();
 115                         if (activePart instanceof FactualDataPartE4){
 116                             MPart selectionProvidingPart =((FactualDataPartE4)activePart).getSelectionProvidingPart();
 117                             Object obj = selectionProvidingPart.getObject();
 118                             if (obj instanceof TaxonNameEditorE4){
 119                                 editor = (TaxonNameEditorE4) obj;
 120                             }
 121                         }
 122                         AbstractPostTaxonOperation operation = new MoveDescriptionElementsOperation(Messages.DescriptionElementDropAdapter_MOVE_DESC, EditorUtil.getUndoContext(), target, description, descriptionElements, isCopy, null, sync);
 123
 124                         editor.getEditorInput().addOperation(operation);
 125                         editor.setDirty();
 126 //                      EditorUtil.executeOperation(operation, sync);
 127                         return true;
 128                 }
 129                 MessagingUtils.warningDialog(OPERATION_NOT_SUPPORTED_YET, this, Messages.DescriptionElementDropAdapter_NOT_SUPPORTED_EMPTY_ELEMENT);
 130
 131                 return false;
 132
 133         }
 134
 135         /* (non-Javadoc)
 136          * @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
 137          */
 138         @Override
 139         public boolean validateDrop(Object target, int operation,
 140                         TransferData transferData) {
 141                 boolean transferDataIsSupported = DescriptionElementTransfer.getInstance().isSupportedType(
 142                                 transferData);
 143                 return target instanceof DescriptionBase && transferDataIsSupported;
 144         }
 145
 146 }