eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/derivate/DerivateDropListener.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2014 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 package eu.etaxonomy.taxeditor.editor.view.derivate;
  11
  12 import org.eclipse.jface.util.LocalSelectionTransfer;
  13 import org.eclipse.jface.viewers.TreeNode;
  14 import org.eclipse.jface.viewers.ViewerDropAdapter;
  15 import org.eclipse.swt.dnd.TransferData;
  16
  17 import eu.etaxonomy.cdm.api.service.IOccurrenceService;
  18 import eu.etaxonomy.cdm.api.service.molecular.ISequenceService;
  19 import eu.etaxonomy.cdm.model.molecular.DnaSample;
  20 import eu.etaxonomy.cdm.model.molecular.Sequence;
  21 import eu.etaxonomy.cdm.model.molecular.SingleRead;
  22 import eu.etaxonomy.cdm.model.occurrence.DerivedUnit;
  23 import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
  24 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  25 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  26 import eu.etaxonomy.taxeditor.store.CdmStore;
  27 import eu.etaxonomy.taxeditor.view.derivateSearch.DerivateLabelProvider;
  28
  29 /**
  30  * @author pplitzner
  31  * @date 18.03.2014
  32  *
  33  */
  34 public class DerivateDropListener extends ViewerDropAdapter {
  35
  36     private final DerivateView derivateView;
  37
  38     /**
  39      * @param derivateView
  40      */
  41     protected DerivateDropListener(DerivateView derivateView) {
  42         super(derivateView.getViewer());
  43         this.derivateView = derivateView;
  44     }
  45
  46     /* (non-Javadoc)
  47      * @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object)
  48      */
  49     @Override
  50     public boolean performDrop(Object data) {
  51         if(derivateView.isDirty()){
  52             MessagingUtils.warningDialog("View has unsaved changes", this, "You need to save before performing this action");
  53             return false;
  54         }
  55         Object target = getCurrentTarget();
  56         if(target instanceof TreeNode && data instanceof DerivateViewSelection){
  57             DerivateViewSelection derivateViewSelection = (DerivateViewSelection)data;
  58             TreeNode targetNode = (TreeNode) target;
  59             TreeNode draggednode = EditorUtil.getTreeNodeOfSelection(derivateViewSelection.getSelection());
  60             if(draggednode!=null){
  61                 if(moveTreeNode(draggednode, targetNode)){
  62                     //update DerivateView
  63                     derivateView.getConversationHolder().commit();
  64                     derivateView.refreshTree();
  65
  66                     // update source DerivateView if dragging between different views occurred
  67                     DerivateView sourceDerivateView = derivateViewSelection.getDerivateView();
  68                     if(sourceDerivateView!=derivateView){
  69                         sourceDerivateView.getConversationHolder().commit();
  70                         sourceDerivateView.refreshTree();
  71                     }
  72
  73                     //FIXME: way too much overhead for just refreshing the other DerivateView
  74 //                    CdmStore.getContextManager().notifyContextRefresh();
  75                     LocalSelectionTransfer.getTransfer().setSelection(null);
  76                     return true;
  77                 }
  78                 else{
  79                     DerivateLabelProvider derivateLabelProvider = new DerivateLabelProvider();
  80                     derivateLabelProvider.setConversation(derivateView.getConversationHolder());
  81                     MessagingUtils.warningDialog("Moving derivate not possible!", derivateView, "Moving \""+derivateLabelProvider.getDerivateText(draggednode)+"\" to \""+derivateLabelProvider.getDerivateText(targetNode)+"\" is not possible!");
  82                 }
  83             }
  84         }
  85         return false;
  86     }
  87
  88     /* (non-Javadoc)
  89      * @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
  90      */
  91     @Override
  92     public boolean validateDrop(Object target, int operation, TransferData transferType) {
  93         return LocalSelectionTransfer.getTransfer().isSupportedType(transferType) && target instanceof TreeNode;
  94     }
  95
  96     /**
  97      * @param value
  98      * @return
  99      */
 100     private boolean moveTreeNode(TreeNode draggedNode, TreeNode targetNode) {
 101         Object draggedNodeValue = draggedNode.getValue();
 102         Object targetNodeValue = targetNode.getValue();
 103         TreeNode fromParentNode = draggedNode.getParent();
 104         Object fromParentSpecimen = null;
 105         if(fromParentNode!=null){
 106             fromParentNode.getValue();
 107         }
 108
 109         // drag'n'drop for SpecimenOrObservationBase
 110         IOccurrenceService occurrenceService = CdmStore.getService(IOccurrenceService.class);
 111         if(draggedNodeValue instanceof DerivedUnit && targetNodeValue instanceof SpecimenOrObservationBase<?>){
 112             DerivedUnit draggedSpecimen = (DerivedUnit) draggedNodeValue;
 113             SpecimenOrObservationBase<?> targetSpecimen = (SpecimenOrObservationBase<?>) targetNodeValue;
 114             //check if type is a sub derivate type
 115             if(!fromParentNode.equals(targetNode)//don't drag on direct parent node
 116                     && fromParentSpecimen instanceof SpecimenOrObservationBase<?>){
 117                 return occurrenceService.moveDerivate((SpecimenOrObservationBase<?>)fromParentSpecimen, targetSpecimen, draggedSpecimen);
 118             }
 119         }
 120
 121         // drag'n'drop for SingleRead
 122         else if(draggedNodeValue instanceof SingleRead && targetNodeValue instanceof Sequence){
 123             SingleRead singleRead = (SingleRead) draggedNodeValue;
 124             if(fromParentSpecimen instanceof Sequence){
 125                 return CdmStore.getService(ISequenceService.class).moveSingleRead((Sequence)fromParentSpecimen, (Sequence)targetNodeValue, singleRead);
 126             }
 127         }
 128
 129         // drag'n'drop for Sequence
 130         else if(draggedNodeValue instanceof Sequence && targetNodeValue instanceof DnaSample ){
 131             Sequence sequence = (Sequence)draggedNodeValue;
 132             if(fromParentSpecimen instanceof DnaSample){
 133                 return occurrenceService.moveSequence((DnaSample)fromParentSpecimen, (DnaSample)targetNodeValue, sequence);
 134             }
 135         }
 136         return false;
 137     }
 138
 139 }