eu.etaxonomy.taxeditor.bulkeditor/src/main/java/eu/etaxonomy/taxeditor/bulkeditor/handler/MergeGroupHandler.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 package eu.etaxonomy.taxeditor.bulkeditor.handler;
  11
  12 import java.util.Set;
  13
  14 import org.apache.log4j.Logger;
  15 import org.eclipse.core.commands.AbstractHandler;
  16 import org.eclipse.core.commands.ExecutionEvent;
  17 import org.eclipse.core.commands.ExecutionException;
  18 import org.eclipse.jface.dialogs.MessageDialog;
  19 import org.eclipse.jface.text.source.Annotation;
  20 import org.eclipse.ui.IEditorInput;
  21 import org.eclipse.ui.IEditorPart;
  22 import org.eclipse.ui.handlers.HandlerUtil;
  23 import org.eclipse.ui.texteditor.IDocumentProvider;
  24
  25 import eu.etaxonomy.taxeditor.annotatedlineeditor.IEntityContainer;
  26 import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotation;
  27 import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotationModel;
  28 import eu.etaxonomy.taxeditor.bulkeditor.BulkEditor;
  29 import eu.etaxonomy.taxeditor.bulkeditor.IBulkEditorConstants;
  30 import eu.etaxonomy.taxeditor.bulkeditor.input.AbstractBulkEditorInput;
  31
  32 /**
  33  * <p>MergeGroupHandler class.</p>
  34  *
  35  * @author p.ciardelli
  36  * @created 25.06.2009
  37  * @version 1.0
  38  */
  39 public class MergeGroupHandler extends AbstractHandler {
  40         private static final Logger logger = Logger
  41                         .getLogger(MergeGroupHandler.class);
  42
  43         /* (non-Javadoc)
  44          * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  45          */
  46         /** {@inheritDoc} */
  47         public Object execute(ExecutionEvent event) throws ExecutionException {
  48
  49                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  50                 IEditorInput input = editor.getEditorInput();
  51                 if (editor instanceof BulkEditor && input instanceof AbstractBulkEditorInput) {
  52
  53                         IDocumentProvider provider = ((BulkEditor) editor).getDocumentProvider();
  54                         LineAnnotationModel model =
  55                                         (LineAnnotationModel) provider.getAnnotationModel(input);
  56
  57                         // Check whether there are any group annotations
  58                         Set<LineAnnotation> candidateAnnotations = model.getAllAnnotationsOfType(IBulkEditorConstants.TYPE_MERGE_CANDIDATE);
  59                         if (candidateAnnotations.size() == 0) {
  60                                 MessageDialog.openWarning(HandlerUtil.getActiveShell(event),
  61                                                 "No merge candidates", "No objects have been chosen for merging.");
  62                                 return null;
  63                         }
  64
  65                         // Check whether group merge target has been set
  66                         Annotation targetAnnotation = model.getFirstAnnotationOfType(IBulkEditorConstants.TYPE_MERGE_TARGET);
  67                         if (targetAnnotation == null) {
  68                                 MessageDialog.openWarning(HandlerUtil.getActiveShell(event),
  69                                                 "No group merge target set", "No group merge target has been set.");
  70                                 return null;
  71                         }
  72                         Object targetEntity = ((IEntityContainer<?>) targetAnnotation).getEntity();
  73
  74                         logger.info("Merging group");
  75 //                      model.printAnnotations();
  76                         for (LineAnnotation annotation : candidateAnnotations) {
  77
  78                                 ((BulkEditor) editor).removeAnnotatedLine(annotation);
  79
  80                                 // Mark entity container for merging with target entity
  81                                 ((IEntityContainer) annotation).markAsMerged(targetEntity);
  82                                 logger.info("Merging " + annotation + " with " + targetAnnotation);
  83
  84                                 // Remove annotation from model
  85                                 model.removeAnnotation(annotation);
  86                         }
  87 //                      model.printAnnotations();
  88
  89                         model.removeTypeFromAllAnnotations(IBulkEditorConstants.TYPE_MERGE_CANDIDATE);
  90                         model.removeTypeFromAllAnnotations(IBulkEditorConstants.TYPE_MERGE_TARGET);
  91                 }
  92                 return null;
  93         }
  94 }