eu.etaxonomy.taxeditor.bulkeditor/src/main/java/eu/etaxonomy/taxeditor/bulkeditor/handler/SetMergeTargetHandler.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 org.eclipse.core.commands.AbstractHandler;
  13 import org.eclipse.core.commands.ExecutionEvent;
  14 import org.eclipse.core.commands.ExecutionException;
  15 import org.eclipse.jface.text.IDocument;
  16 import org.eclipse.jface.text.TextSelection;
  17 import org.eclipse.jface.text.source.Annotation;
  18 import org.eclipse.jface.viewers.ISelection;
  19 import org.eclipse.ui.IEditorInput;
  20 import org.eclipse.ui.IEditorPart;
  21 import org.eclipse.ui.handlers.HandlerUtil;
  22 import org.eclipse.ui.texteditor.IDocumentProvider;
  23
  24 import eu.etaxonomy.taxeditor.annotatedlineeditor.AnnotatedLineEditor;
  25 import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotationModel;
  26 import eu.etaxonomy.taxeditor.bulkeditor.IBulkEditorConstants;
  27 import eu.etaxonomy.taxeditor.bulkeditor.input.AbstractBulkEditorInput;
  28
  29 /**
  30  * <p>SetMergeTargetHandler class.</p>
  31  *
  32  * @author p.ciardelli
  33  * @created 25.06.2009
  34  * @version 1.0
  35  */
  36 public class SetMergeTargetHandler extends AbstractHandler {
  37
  38         /* (non-Javadoc)
  39          * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  40          */
  41         /** {@inheritDoc} */
  42         public Object execute(ExecutionEvent event) throws ExecutionException {
  43
  44                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  45                 IEditorInput input = editor.getEditorInput();
  46
  47                 if (editor instanceof AnnotatedLineEditor && input instanceof AbstractBulkEditorInput) {
  48
  49                         IDocumentProvider provider = ((AnnotatedLineEditor) editor).getDocumentProvider();
  50                         LineAnnotationModel model =
  51                                         (LineAnnotationModel) provider.getAnnotationModel(input);
  52                         IDocument document = provider.getDocument(input);
  53
  54                         ISelection selection = HandlerUtil.getActiveMenuSelection(event);
  55                         if (selection instanceof TextSelection) {
  56                                 Annotation annotation = null;
  57
  58                                 // Get annotation in current line
  59                                 int line = ((TextSelection) selection).getStartLine();
  60                                 annotation = model.getAnnotationAtLine(line, document);
  61
  62                                 // Remove existing merge target
  63                                 model.removeTypeFromAllAnnotations(IBulkEditorConstants.TYPE_MERGE_TARGET);
  64
  65                                 // Set annotation in current line to merge target
  66                                 if (annotation != null) {
  67                                         model.changeAnnotationType(
  68                                                         annotation, IBulkEditorConstants.TYPE_MERGE_TARGET);
  69                                 }
  70                         }
  71                 }
  72                 return null;
  73         }
  74 }