eu.etaxonomy.taxeditor.bulkeditor/src/main/java/eu/etaxonomy/taxeditor/bulkeditor/handler/SetMergeTargetHandler.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 package eu.etaxonomy.taxeditor.bulkeditor.handler;
  10
  11 import org.eclipse.core.commands.AbstractHandler;
  12 import org.eclipse.core.commands.ExecutionEvent;
  13 import org.eclipse.core.commands.ExecutionException;
  14 import org.eclipse.jface.text.IDocument;
  15 import org.eclipse.jface.text.TextSelection;
  16 import org.eclipse.jface.text.source.Annotation;
  17 import org.eclipse.jface.viewers.ISelection;
  18 import org.eclipse.ui.IEditorInput;
  19 import org.eclipse.ui.IEditorPart;
  20 import org.eclipse.ui.handlers.HandlerUtil;
  21 import org.eclipse.ui.texteditor.IDocumentProvider;
  22
  23 import eu.etaxonomy.taxeditor.annotatedlineeditor.AnnotatedLineEditor;
  24 import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotationModel;
  25 import eu.etaxonomy.taxeditor.bulkeditor.IBulkEditorConstants;
  26 import eu.etaxonomy.taxeditor.bulkeditor.input.AbstractBulkEditorInput;
  27
  28 /**
  29  * <p>SetMergeTargetHandler class.</p>
  30  *
  31  * @author p.ciardelli
  32  * @created 25.06.2009
  33  * @version 1.0
  34  */
  35 public class SetMergeTargetHandler extends AbstractHandler {
  36
  37         /* (non-Javadoc)
  38          * @see org.eclipse.core.commands.AbstractHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  39          */
  40         /** {@inheritDoc} */
  41         public Object execute(ExecutionEvent event) throws ExecutionException {
  42
  43                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  44                 IEditorInput input = editor.getEditorInput();
  45
  46                 if (editor instanceof AnnotatedLineEditor && input instanceof AbstractBulkEditorInput) {
  47
  48                         IDocumentProvider provider = ((AnnotatedLineEditor) editor).getDocumentProvider();
  49                         LineAnnotationModel model =
  50                                         (LineAnnotationModel) provider.getAnnotationModel(input);
  51                         IDocument document = provider.getDocument(input);
  52
  53                         ISelection selection = HandlerUtil.getCurrentSelection(event);
  54                         if (selection instanceof TextSelection) {
  55                                 Annotation annotation = null;
  56
  57                                 // Get annotation in current line
  58                                 int line = ((TextSelection) selection).getStartLine();
  59                                 annotation = model.getAnnotationAtLine(line, document);
  60
  61                                 // Remove existing merge target
  62                                 model.removeTypeFromAllAnnotations(IBulkEditorConstants.TYPE_MERGE_TARGET);
  63
  64                                 // Set annotation in current line to merge target
  65                                 if (annotation != null) {
  66                                         model.changeAnnotationType(
  67                                                         annotation, IBulkEditorConstants.TYPE_MERGE_TARGET);
  68                                 }
  69                         }
  70                 }
  71                 return null;
  72         }
  73 }