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.IStructuredSelection;
  14 import org.eclipse.jface.viewers.TreeNode;
  15 import org.eclipse.jface.viewers.ViewerDropAdapter;
  16 import org.eclipse.swt.dnd.TransferData;
  17
  18 import eu.etaxonomy.cdm.api.service.IOccurrenceService;
  19 import eu.etaxonomy.cdm.api.service.molecular.ISequenceService;
  20 import eu.etaxonomy.cdm.model.molecular.DnaSample;
  21 import eu.etaxonomy.cdm.model.molecular.Sequence;
  22 import eu.etaxonomy.cdm.model.molecular.SingleRead;
  23 import eu.etaxonomy.cdm.model.occurrence.DerivedUnit;
  24 import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
  25 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  26 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  27 import eu.etaxonomy.taxeditor.store.CdmStore;
  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             AbstractUtility.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 IStructuredSelection){
  57             TreeNode targetNode = (TreeNode) target;
  58             TreeNode draggednode = EditorUtil.getTreeNodeOfSelection((IStructuredSelection) data);
  59             if(draggednode!=null){
  60                 if(moveTreeNode(draggednode, targetNode)){
  61                     derivateView.refreshTree();
  62                     LocalSelectionTransfer.getTransfer().setSelection(null);
  63                     return true;
  64                 }
  65             }
  66         }
  67         return false;
  68     }
  69
  70     /* (non-Javadoc)
  71      * @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
  72      */
  73     @Override
  74     public boolean validateDrop(Object target, int operation, TransferData transferType) {
  75         return LocalSelectionTransfer.getTransfer().isSupportedType(transferType) && target instanceof TreeNode;
  76     }
  77
  78     /**
  79      * @param value
  80      * @return
  81      */
  82     private boolean moveTreeNode(TreeNode from, TreeNode to) {
  83         Object fromValue = from.getValue();
  84         Object toValue = to.getValue();
  85         TreeNode fromParentNode = from.getParent();
  86         Object fromParentSpecimen = fromParentNode.getValue();
  87
  88         // drag'n'drop for SpecimenOrObservationBase
  89         if(fromValue instanceof DerivedUnit && toValue instanceof SpecimenOrObservationBase<?>){
  90             DerivedUnit draggedSpecimen = (DerivedUnit) fromValue;
  91             SpecimenOrObservationBase<?> targetSpecimen = (SpecimenOrObservationBase<?>) toValue;
  92             //check if type is a sub derivate type
  93             if(!fromParentNode.equals(to)//don't drag on direct parent node
  94                     && fromParentSpecimen instanceof SpecimenOrObservationBase<?>){
  95                 CdmStore.getService(IOccurrenceService.class).moveDerivate((SpecimenOrObservationBase<?>)fromParentSpecimen, targetSpecimen, draggedSpecimen);
  96                 return true;
  97             }
  98         }
  99
 100         // drag'n'drop for SingleRead
 101         else if(fromValue instanceof SingleRead && toValue instanceof Sequence){
 102             SingleRead singleRead = (SingleRead) fromValue;
 103             if(fromParentSpecimen instanceof Sequence){
 104                 CdmStore.getService(ISequenceService.class).moveSingleRead((Sequence)fromParentSpecimen, (Sequence)toValue, singleRead);
 105             }
 106             return true;
 107         }
 108
 109         // drag'n'drop for Sequence
 110         else if(fromValue instanceof Sequence && toValue instanceof DnaSample ){
 111             Sequence sequence = (Sequence)fromValue;
 112             if(fromParentSpecimen instanceof DnaSample){
 113                 CdmStore.getService(IOccurrenceService.class).moveSequence((DnaSample)fromParentSpecimen, (DnaSample)toValue, sequence);
 114                 return true;
 115             }
 116         }
 117         return false;
 118     }
 119
 120 }