eu.etaxonomy.taxeditor.bulkeditor/src/main/java/eu/etaxonomy/taxeditor/bulkeditor/handler/DeleteHandler.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.bulkeditor.handler;
  12
  13 import org.eclipse.core.commands.AbstractHandler;
  14 import org.eclipse.core.commands.ExecutionEvent;
  15 import org.eclipse.core.commands.ExecutionException;
  16 import org.eclipse.jface.viewers.ISelection;
  17 import org.eclipse.jface.viewers.IStructuredSelection;
  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.IEntityPersistenceService;
  24 import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotation;
  25 import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotationModel;
  26 import eu.etaxonomy.taxeditor.bulkeditor.BulkEditor;
  27 import eu.etaxonomy.taxeditor.bulkeditor.BulkEditorUtil;
  28 import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;
  29 import eu.etaxonomy.taxeditor.preference.PreferencesUtil;
  30
  31 /**
  32  * @author n.hoffmann
  33  * @created Mar 11, 2011
  34  * @version 1.0
  35  */
  36 public class DeleteHandler extends AbstractHandler {
  37
  38         /* (non-Javadoc)
  39          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  40          */
  41         @Override
  42         public Object execute(ExecutionEvent event) throws ExecutionException {
  43
  44                 if(PreferencesUtil.getPreferenceStore().getBoolean(IPreferenceKeys.SHOW_EXPERIMENTAL_FEATURES)){
  45                         ISelection selection = HandlerUtil.getCurrentSelection(event);
  46
  47                         IEditorPart editor = HandlerUtil.getActiveEditor(event);
  48
  49                         IEditorInput input = editor.getEditorInput();
  50
  51                         if((input instanceof IEntityPersistenceService) && (selection instanceof IStructuredSelection)){
  52
  53
  54                                 IDocumentProvider provider = ((BulkEditor) editor).getDocumentProvider();
  55                                 LineAnnotationModel model =
  56                                                 (LineAnnotationModel) provider.getAnnotationModel(input);
  57
  58
  59                                 IStructuredSelection structuredSelection = (IStructuredSelection) selection;
  60
  61                                 IEntityPersistenceService persistenceService = (IEntityPersistenceService) input;
  62
  63                                 for(Object object : structuredSelection.toList()){
  64
  65                                         LineAnnotation annotation = (LineAnnotation) model.getAnnotation(object);
  66
  67                                         try {
  68                                                 persistenceService.delete(object);
  69                                         } catch (Exception e){
  70                                                 BulkEditorUtil.errorDialog("Could not delete", getClass(), e.getMessage(), null);
  71                                         }
  72                                         ((BulkEditor) editor).removeAnnotatedLine(annotation);
  73
  74                                 }
  75                         }
  76                 }else{
  77                         BulkEditorUtil.warningDialog("Feature not enabled", getClass(), "Deletion is currently an experimental feature." +
  78                                         "Enable it via Preferences at your own risk.");
  79                 }
  80
  81
  82                 return null;
  83         }
  84
  85 }