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// $Id$
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/**
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* Copyright (C) 2014 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.taxeditor.editor.view.derivate;
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import org.eclipse.jface.util.LocalSelectionTransfer;
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import org.eclipse.jface.viewers.TreeNode;
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import org.eclipse.jface.viewers.ViewerDropAdapter;
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import org.eclipse.swt.dnd.TransferData;
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import eu.etaxonomy.cdm.api.service.IOccurrenceService;
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import eu.etaxonomy.cdm.api.service.molecular.ISequenceService;
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import eu.etaxonomy.cdm.model.molecular.DnaSample;
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import eu.etaxonomy.cdm.model.molecular.Sequence;
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import eu.etaxonomy.cdm.model.molecular.SingleRead;
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import eu.etaxonomy.cdm.model.occurrence.DerivedUnit;
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import eu.etaxonomy.cdm.model.occurrence.SpecimenOrObservationBase;
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import eu.etaxonomy.taxeditor.editor.EditorUtil;
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import eu.etaxonomy.taxeditor.model.MessagingUtils;
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import eu.etaxonomy.taxeditor.store.CdmStore;
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import eu.etaxonomy.taxeditor.view.derivateSearch.DerivateLabelProvider;
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/**
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* @author pplitzner
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* @date 18.03.2014
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*
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*/
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public class DerivateDropListener extends ViewerDropAdapter {
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private final DerivateView derivateView;
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/**
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* @param derivateView
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*/
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protected DerivateDropListener(DerivateView derivateView) {
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super(derivateView.getViewer());
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this.derivateView = derivateView;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ViewerDropAdapter#performDrop(java.lang.Object)
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*/
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@Override
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public boolean performDrop(Object data) {
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if(derivateView.isDirty()){
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MessagingUtils.warningDialog("View has unsaved changes", this, "You need to save before performing this action");
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return false;
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}
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Object target = getCurrentTarget();
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if(target instanceof TreeNode && data instanceof DerivateViewSelection){
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DerivateViewSelection derivateViewSelection = (DerivateViewSelection)data;
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TreeNode targetNode = (TreeNode) target;
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TreeNode draggednode = EditorUtil.getTreeNodeOfSelection(derivateViewSelection.getSelection());
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if(draggednode!=null){
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if(moveTreeNode(draggednode, targetNode)){
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//update DerivateView
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derivateView.getConversationHolder().commit();
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derivateView.refreshTree();
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// update source DerivateView if dragging between different views occurred
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DerivateView sourceDerivateView = derivateViewSelection.getDerivateView();
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if(sourceDerivateView!=derivateView){
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sourceDerivateView.getConversationHolder().commit();
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sourceDerivateView.refreshTree();
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}
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//FIXME: way too much overhead for just refreshing the other DerivateView
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// CdmStore.getContextManager().notifyContextRefresh();
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LocalSelectionTransfer.getTransfer().setSelection(null);
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return true;
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}
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else{
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DerivateLabelProvider derivateLabelProvider = new DerivateLabelProvider();
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derivateLabelProvider.setConversation(derivateView.getConversationHolder());
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MessagingUtils.warningDialog("Moving derivate not possible!", derivateView, "Moving \""+derivateLabelProvider.getDerivateText(draggednode)+"\" to \""+derivateLabelProvider.getDerivateText(targetNode)+"\" is not possible!");
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}
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}
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}
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return false;
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}
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/* (non-Javadoc)
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* @see org.eclipse.jface.viewers.ViewerDropAdapter#validateDrop(java.lang.Object, int, org.eclipse.swt.dnd.TransferData)
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*/
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@Override
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public boolean validateDrop(Object target, int operation, TransferData transferType) {
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return LocalSelectionTransfer.getTransfer().isSupportedType(transferType) && target instanceof TreeNode;
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}
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/**
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* @param value
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* @return
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*/
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private boolean moveTreeNode(TreeNode draggedNode, TreeNode targetNode) {
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Object draggedNodeValue = draggedNode.getValue();
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Object targetNodeValue = targetNode.getValue();
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TreeNode fromParentNode = draggedNode.getParent();
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Object fromParentSpecimen = null;
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if(fromParentNode!=null){
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fromParentNode.getValue();
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}
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// drag'n'drop for SpecimenOrObservationBase
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IOccurrenceService occurrenceService = CdmStore.getService(IOccurrenceService.class);
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if(draggedNodeValue instanceof DerivedUnit && targetNodeValue instanceof SpecimenOrObservationBase<?>){
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DerivedUnit draggedSpecimen = (DerivedUnit) draggedNodeValue;
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SpecimenOrObservationBase<?> targetSpecimen = (SpecimenOrObservationBase<?>) targetNodeValue;
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//check if type is a sub derivate type
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if(!fromParentNode.equals(targetNode)//don't drag on direct parent node
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&& fromParentSpecimen instanceof SpecimenOrObservationBase<?>){
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return occurrenceService.moveDerivate((SpecimenOrObservationBase<?>)fromParentSpecimen, targetSpecimen, draggedSpecimen);
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}
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}
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// drag'n'drop for SingleRead
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else if(draggedNodeValue instanceof SingleRead && targetNodeValue instanceof Sequence){
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SingleRead singleRead = (SingleRead) draggedNodeValue;
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if(fromParentSpecimen instanceof Sequence){
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return CdmStore.getService(ISequenceService.class).moveSingleRead((Sequence)fromParentSpecimen, (Sequence)targetNodeValue, singleRead);
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}
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}
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// drag'n'drop for Sequence
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else if(draggedNodeValue instanceof Sequence && targetNodeValue instanceof DnaSample ){
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Sequence sequence = (Sequence)draggedNodeValue;
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if(fromParentSpecimen instanceof DnaSample){
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return occurrenceService.moveSequence((DnaSample)fromParentSpecimen, (DnaSample)targetNodeValue, sequence);
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}
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}
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return false;
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}
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}
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