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.AbstractUtility;
  26 import eu.etaxonomy.taxeditor.store.CdmStore;
  27
  28 /**
  29  * @author pplitzner
  30  * @date 18.03.2014
  31  *
  32  */
  33 public class DerivateDropListener extends ViewerDropAdapter {
  34
  35     private final DerivateView derivateView;
  36
  37     /**
  38      * @param derivateView
  39      */
  40     protected DerivateDropListener(DerivateView derivateView) {
  41         super(derivateView.getViewer());
  42         this.derivateView = derivateView;
  43     }
  44
  45     /* (non-Javadoc)
  46      * @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object)
  47      */
  48     @Override
  49     public boolean performDrop(Object data) {
  50         if(derivateView.isDirty()){
  51             AbstractUtility.warningDialog("View has unsaved changes", this, "You need to save before performing this action");
  52             return false;
  53         }
  54         Object target = getCurrentTarget();
  55         if(target instanceof TreeNode && data instanceof DerivateViewSelection){
  56             DerivateViewSelection derivateViewSelection = (DerivateViewSelection)data;
  57             TreeNode targetNode = (TreeNode) target;
  58             TreeNode draggednode = EditorUtil.getTreeNodeOfSelection(derivateViewSelection.getSelection());
  59             if(draggednode!=null){
  60                 if(moveTreeNode(draggednode, targetNode)){
  61                     //update DerivateView
  62                     derivateView.getConversationHolder().commit();
  63                     derivateView.refreshTree();
  64
  65                     // update source DerivateView if dragging between different views occured
  66                     DerivateView sourceDerivateView = derivateViewSelection.getDerivateView();
  67                     if(sourceDerivateView!=derivateView){
  68                         sourceDerivateView.setFocus();
  69 //                        derivateView.getSite().getPage().activate(sourceDerivateView);
  70                         sourceDerivateView.getConversationHolder().commit();
  71                         sourceDerivateView.refreshTree();
  72                     }
  73
  74                     LocalSelectionTransfer.getTransfer().setSelection(null);
  75                     return true;
  76                 }
  77             }
  78         }
  79         return false;
  80     }
  81
  82     /* (non-Javadoc)
  83      * @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
  84      */
  85     @Override
  86     public boolean validateDrop(Object target, int operation, TransferData transferType) {
  87         return LocalSelectionTransfer.getTransfer().isSupportedType(transferType) && target instanceof TreeNode;
  88     }
  89
  90     /**
  91      * @param value
  92      * @return
  93      */
  94     private boolean moveTreeNode(TreeNode draggedNode, TreeNode targetNode) {
  95         Object draggedNodeValue = draggedNode.getValue();
  96         Object targetNodeValue = targetNode.getValue();
  97         TreeNode fromParentNode = draggedNode.getParent();
  98         Object fromParentSpecimen = fromParentNode.getValue();
  99
 100         // drag'n'drop for SpecimenOrObservationBase
 101         IOccurrenceService occurrenceService = CdmStore.getService(IOccurrenceService.class);
 102         if(draggedNodeValue instanceof DerivedUnit && targetNodeValue instanceof SpecimenOrObservationBase<?>){
 103             DerivedUnit draggedSpecimen = (DerivedUnit) draggedNodeValue;
 104             SpecimenOrObservationBase<?> targetSpecimen = (SpecimenOrObservationBase<?>) targetNodeValue;
 105             //check if type is a sub derivate type
 106             if(!fromParentNode.equals(targetNode)//don't drag on direct parent node
 107                     && fromParentSpecimen instanceof SpecimenOrObservationBase<?>){
 108                 occurrenceService.moveDerivate((SpecimenOrObservationBase<?>)fromParentSpecimen, targetSpecimen, draggedSpecimen);
 109                 return true;
 110             }
 111         }
 112
 113         // drag'n'drop for SingleRead
 114         else if(draggedNodeValue instanceof SingleRead && targetNodeValue instanceof Sequence){
 115             SingleRead singleRead = (SingleRead) draggedNodeValue;
 116             if(fromParentSpecimen instanceof Sequence){
 117                 CdmStore.getService(ISequenceService.class).moveSingleRead((Sequence)fromParentSpecimen, (Sequence)targetNodeValue, singleRead);
 118             }
 119             return true;
 120         }
 121
 122         // drag'n'drop for Sequence
 123         else if(draggedNodeValue instanceof Sequence && targetNodeValue instanceof DnaSample ){
 124             Sequence sequence = (Sequence)draggedNodeValue;
 125             if(fromParentSpecimen instanceof DnaSample){
 126                 occurrenceService.moveSequence((DnaSample)fromParentSpecimen, (DnaSample)targetNodeValue, sequence);
 127                 return true;
 128             }
 129         }
 130         return false;
 131     }
 132
 133 }