taxeditor-navigation/src/main/java/eu/etaxonomy/taxeditor/navigation/navigator/handler/MoveTaxonHandler.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.navigation.navigator.handler;
  11
  12 import java.util.ArrayList;
  13 import java.util.HashSet;
  14 import java.util.Iterator;
  15 import java.util.List;
  16 import java.util.Set;
  17 import java.util.UUID;
  18
  19 import org.eclipse.core.commands.AbstractHandler;
  20 import org.eclipse.core.commands.ExecutionEvent;
  21 import org.eclipse.core.commands.ExecutionException;
  22 import org.eclipse.jface.dialogs.MessageDialog;
  23 import org.eclipse.jface.viewers.TreeSelection;
  24 import org.eclipse.ui.handlers.HandlerUtil;
  25
  26 import eu.etaxonomy.cdm.model.common.CdmBase;
  27 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  28 import eu.etaxonomy.taxeditor.navigation.NavigationUtil;
  29 import eu.etaxonomy.taxeditor.navigation.navigator.TaxonNavigator;
  30 import eu.etaxonomy.taxeditor.navigation.navigator.operation.MoveTaxonOperation;
  31 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  32 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  33 import eu.etaxonomy.taxeditor.ui.dialogs.filteredSelection.TaxonNodeSelectionDialog;
  34
  35 /**
  36  * <p>MoveTaxonHandler class.</p>
  37  *
  38  * @author n.hoffmann
  39  * @created 01.04.2009
  40  * @version 1.0
  41  */
  42 public class MoveTaxonHandler extends AbstractHandler implements IPostOperationEnabled {
  43
  44         private TaxonNode parentTaxonNode;
  45
  46         /* (non-Javadoc)
  47          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  48          */
  49         /** {@inheritDoc} */
  50         public Object execute(ExecutionEvent event) throws ExecutionException {
  51                 TaxonNavigator taxonNavigator = NavigationUtil.showNavigator();
  52
  53                 TreeSelection selection = (TreeSelection) HandlerUtil.getCurrentSelection(event);
  54
  55                 Iterator selectionIterator = selection.iterator();
  56                 Set<TaxonNode> taxonNodes = new HashSet<TaxonNode>();
  57                 // do not show the current selection
  58                 List<UUID> excludeTaxa = new ArrayList<UUID>();
  59
  60
  61                 while (selectionIterator.hasNext()){
  62                         Object object = selectionIterator.next();
  63                         if(object instanceof TaxonNode){
  64                                 TaxonNode taxonNode = (TaxonNode) object;
  65                                 taxonNodes.add(taxonNode);
  66                                 excludeTaxa.add(taxonNode.getTaxon().getUuid());
  67                         }
  68                 }
  69
  70 //              TaxonNode taxonNode = (TaxonNode) selection.getFirstElement();
  71
  72                 parentTaxonNode = TaxonNodeSelectionDialog.select(HandlerUtil.getActiveShell(event), taxonNavigator.getConversationHolder(), "Choose new parent", excludeTaxa, null);
  73
  74                 if(parentTaxonNode != null){
  75                         if(NavigationUtil.isDirty(parentTaxonNode)){
  76                                 MessageDialog.openWarning(HandlerUtil.getActiveShell(event), "Unsaved Parent Taxon", "There are unsaved " +
  77                                                 "changes in the parent taxon. Please save first.");
  78                                 return null;
  79                         }
  80
  81                         AbstractPostOperation operation = new MoveTaxonOperation
  82                                         ("Move taxon to new parent", NavigationUtil.getUndoContext(),
  83                                                         taxonNodes, parentTaxonNode, this, taxonNavigator); //$NON-NLS-1$
  84                         NavigationUtil.executeOperation(operation);
  85
  86                 }
  87
  88                 return null;
  89         }
  90
  91         /* (non-Javadoc)
  92          * @see eu.etaxonomy.taxeditor.operations.IPostOperationEnabled#postOperation(eu.etaxonomy.cdm.model.common.CdmBase)
  93          */
  94         /** {@inheritDoc} */
  95         public boolean postOperation(CdmBase objectAffectedByOperation) {
  96                 return true;
  97         }
  98
  99         /**
 100          * <p>onComplete</p>
 101          *
 102          * @return a boolean.
 103          */
 104         public boolean onComplete() {
 105                 return false;
 106         }
 107 }