taxeditor-store/src/main/java/eu/etaxonomy/taxeditor/operations/DeleteTaxonNodeOperation.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.operations;
  11
  12 import org.apache.log4j.Logger;
  13 import org.eclipse.core.commands.ExecutionException;
  14 import org.eclipse.core.commands.operations.IUndoContext;
  15 import org.eclipse.core.runtime.IAdaptable;
  16 import org.eclipse.core.runtime.IProgressMonitor;
  17 import org.eclipse.core.runtime.IStatus;
  18 import org.eclipse.core.runtime.Status;
  19 import org.eclipse.jface.dialogs.MessageDialog;
  20 import org.eclipse.swt.widgets.Shell;
  21
  22 import eu.etaxonomy.cdm.model.taxon.TaxonNode;
  23 import eu.etaxonomy.taxeditor.model.TaxonNodeUtil;
  24
  25 /**
  26  * Delete a taxon node from its TaxonomicTree and thus from the current taxonomic view.
  27  *
  28  *
  29  * @author n.hoffmann
  30  * @created 16.01.2009
  31  * @version 1.0
  32  */
  33 public class DeleteTaxonNodeOperation extends AbstractPostOperation {
  34
  35         @SuppressWarnings("unused")
  36         private static Logger logger = Logger.getLogger(DeleteTaxonNodeOperation.class);
  37
  38         /**
  39          * The taxonomical parent of the taxon to be deleted.
  40          */
  41         private TaxonNode parentTaxonNode;
  42
  43         public DeleteTaxonNodeOperation(String text, IUndoContext undoContext,
  44                         TaxonNode taxonNode) {
  45                 super(text, undoContext, taxonNode, null);
  46
  47                 parentTaxonNode = taxonNode.getParent();
  48         }
  49
  50         /* (non-Javadoc)
  51          * @see org.eclipse.core.commands.operations.AbstractOperation#execute(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
  52          */
  53         @Override
  54         public IStatus execute(IProgressMonitor monitor, IAdaptable info)
  55                         throws ExecutionException {
  56
  57                 // Get taxon name - watch out for null names
  58                 String taxonName = "";
  59                 if (taxon.getName() != null) {
  60                         taxonName = taxon.getName().getTitleCache();
  61                 }
  62
  63                 // Prompt user for confirmation
  64                 if(! MessageDialog.openConfirm((Shell) info.getAdapter(Shell.class), "Confirm Deletion", "Are you sure you want to delete taxon '" + taxonName + "' from this taxonomic view?")){
  65                         monitor.done();
  66                         return Status.CANCEL_STATUS;
  67                 }
  68
  69
  70                 // If the taxon node has child nodes, cancel operation
  71                 // TODO add option to continue, and delete children
  72                 if (taxonNode.getChildNodes().size() > 0) {
  73                         MessageDialog.openInformation((Shell) info.getAdapter(Shell.class), "Cannot delete taxon",
  74                                         "'" + taxonName + "' has taxonomic children. " +
  75                                         "These must be manually deleted before their parent.");
  76                         monitor.done();
  77                         return Status.CANCEL_STATUS;
  78                 }
  79
  80                 // delete the taxon in an isolated conversation
  81                 TaxonNodeUtil.deleteTaxonNodeIsolated(taxonNode.getUuid());
  82
  83
  84                 return postExecute(null);
  85         }
  86
  87         /* (non-Javadoc)
  88          * @see org.eclipse.core.commands.operations.AbstractOperation#redo(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
  89          */
  90         @Override
  91         public IStatus redo(IProgressMonitor monitor, IAdaptable info)
  92                         throws ExecutionException {
  93                 return execute(monitor, info);
  94         }
  95
  96         /* (non-Javadoc)
  97          * @see org.eclipse.core.commands.operations.AbstractOperation#undo(org.eclipse.core.runtime.IProgressMonitor, org.eclipse.core.runtime.IAdaptable)
  98          */
  99         @Override
 100         public IStatus undo(IProgressMonitor monitor, IAdaptable info)
 101                         throws ExecutionException {
 102                 // FIXME we have to add old citation
 103                 parentTaxonNode.addChild(taxon);
 104                 // FIXME readding has to take place in an isolated conversation as well
 105                 // so that all the mediation magic does the rest for us
 106                 return postExecute(null);
 107         }
 108 }