taxeditor-store/src/main/java/eu/etaxonomy/taxeditor/operations/DeleteTaxonomicTreeOperation.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2007 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
  11 package eu.etaxonomy.taxeditor.operations;
  12
  13 import java.util.UUID;
  14
  15 import org.apache.log4j.Logger;
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.core.commands.operations.IUndoContext;
  18 import org.eclipse.core.runtime.IAdaptable;
  19 import org.eclipse.core.runtime.IProgressMonitor;
  20 import org.eclipse.core.runtime.IStatus;
  21 import org.eclipse.core.runtime.Status;
  22 import org.eclipse.jface.dialogs.MessageDialog;
  23 import org.eclipse.swt.widgets.Shell;
  24
  25 import eu.etaxonomy.cdm.api.conversation.ConversationHolder;
  26 import eu.etaxonomy.cdm.model.taxon.TaxonomicTree;
  27 import eu.etaxonomy.taxeditor.store.CdmStore;
  28
  29 /**
  30  * @author n.hoffmann
  31  * @created 23.06.2009
  32  * @version 1.0
  33  */
  34 public class DeleteTaxonomicTreeOperation extends AbstractPostOperation {
  35
  36         private static final Logger logger = Logger
  37                                 .getLogger(DeleteTaxonomicTreeOperation.class);
  38
  39         private TaxonomicTree taxonomicTree;
  40
  41
  42         /**
  43          * @param label
  44          * @param undoContext
  45          * @param taxonNode
  46          * @param postOperationEnabled
  47          */
  48         public DeleteTaxonomicTreeOperation(String label, IUndoContext undoContext,
  49                         TaxonomicTree taxonomicTree) {
  50                 super(label, undoContext);
  51
  52                 this.taxonomicTree = taxonomicTree;
  53
  54         }
  55
  56         /* (non-Javadoc)
  57          * @see org.eclipse.core.commands.operations.IUndoableOperation#execute(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
  58          */
  59         public IStatus execute(IProgressMonitor monitor, IAdaptable info)
  60                         throws ExecutionException {
  61
  62                 // Prompt user for confirmation
  63                 if(! MessageDialog.openConfirm((Shell) info.getAdapter(Shell.class), "Confirm Deletion", "Are you sure you want to delete the taxonomic view '" + taxonomicTree.getTitleCache() + "'?")){
  64                         monitor.done();
  65                         return Status.CANCEL_STATUS;
  66                 }
  67
  68                 // If the taxonomic tree has child nodes, cancel operation
  69                 // TODO add option to continue, and delete children
  70                 if (taxonomicTree.getRootNodes().size() > 0) {
  71                         MessageDialog.openInformation((Shell) info.getAdapter(Shell.class), "Cannot delete taxon",
  72                                         "'" + taxonomicTree.getTitleCache() + "' has taxonomic children. " +
  73                                         "These must be manually deleted before their parent.");
  74                         monitor.done();
  75                         return Status.CANCEL_STATUS;
  76                 }
  77
  78                 deleteTaxonomicTreeIsolated(taxonomicTree.getUuid());
  79
  80                 return postExecute(null);
  81         }
  82
  83         /* (non-Javadoc)
  84          * @see org.eclipse.core.commands.operations.IUndoableOperation#redo(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
  85          */
  86         public IStatus redo(IProgressMonitor monitor, IAdaptable info)
  87                         throws ExecutionException {
  88                 // TODO Auto-generated method stub
  89                 return null;
  90         }
  91
  92
  93         /* (non-Javadoc)
  94          * @see org.eclipse.core.commands.operations.IUndoableOperation#undo(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
  95          */
  96         public IStatus undo(IProgressMonitor monitor, IAdaptable info)
  97                         throws ExecutionException {
  98                 // TODO Auto-generated method stub
  99                 return null;
 100         }
 101
 102         /**
 103          * @param uuid
 104          */
 105         private boolean deleteTaxonomicTreeIsolated(UUID uuid) {
 106                 // get a new conversation
 107                 ConversationHolder conversation = CdmStore.NewTransactionalConversation();
 108
 109                 TaxonomicTree taxonomicTree = CdmStore.getTaxonService().getTaxonomicTreeByUuid(uuid);
 110                 CdmStore.getTaxonService().removeTaxonomicTree(taxonomicTree);
 111
 112                 // commit the conversation
 113                 conversation.commit(true);
 114                 return true;
 115         }
 116 }