eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/editor/definedterm/handler/DeleteTermBaseHandler.java

   1 // $Id$
   2 /**
   3 * Copyright (C) 2009 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.editor.definedterm.handler;
  11
  12 import java.util.Iterator;
  13
  14 import org.eclipse.core.commands.AbstractHandler;
  15 import org.eclipse.core.commands.ExecutionEvent;
  16 import org.eclipse.core.commands.ExecutionException;
  17 import org.eclipse.core.commands.common.NotDefinedException;
  18 import org.eclipse.core.commands.operations.IUndoContext;
  19 import org.eclipse.jface.dialogs.MessageDialog;
  20 import org.eclipse.jface.viewers.ISelection;
  21 import org.eclipse.jface.viewers.IStructuredSelection;
  22 import org.eclipse.ui.IEditorPart;
  23 import org.eclipse.ui.handlers.HandlerUtil;
  24
  25 import eu.etaxonomy.cdm.model.common.TermBase;
  26 import eu.etaxonomy.taxeditor.editor.definedterm.DefinedTermEditor;
  27 import eu.etaxonomy.taxeditor.editor.definedterm.operation.DeleteTermBaseOperation;
  28 import eu.etaxonomy.taxeditor.model.AbstractUtility;
  29 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  30 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  31 import eu.etaxonomy.taxeditor.store.StoreUtil;
  32
  33 /**
  34  * @author l.morris
  35  * @date 22 Dec 2011
  36  *
  37  */
  38 public class DeleteTermBaseHandler extends AbstractHandler {
  39
  40         @Override
  41         public Object execute(ExecutionEvent event) throws ExecutionException {
  42                 IEditorPart editor = HandlerUtil
  43                                 .getActiveEditor(event);
  44
  45                 if (editor.isDirty()){
  46                         boolean proceed = MessageDialog.openQuestion(null,
  47                                         "Save changes", "You have made changes that must be saved before this query can be executed. Would you like to proceed?");
  48                         if (proceed) {
  49                                 editor.doSave(null);
  50                         } else {
  51                                 return null;
  52                         }
  53                 }
  54                 if (editor instanceof DefinedTermEditor){
  55                     DefinedTermEditor dfe = (DefinedTermEditor) editor;
  56                     try {
  57                         String label = event.getCommand().getName();
  58                         IUndoContext undoContext = StoreUtil.getUndoContext();
  59
  60                         ISelection selection = dfe.getViewer().getSelection();
  61                         if(selection instanceof IStructuredSelection){
  62
  63                             Iterator<TermBase> selectionIterator = ((IStructuredSelection) selection).iterator();
  64
  65                             while (selectionIterator.hasNext()){
  66
  67                                 TermBase term = selectionIterator.next();
  68
  69
  70                                 AbstractPostOperation operation =
  71                                         new DeleteTermBaseOperation(label,
  72                                                 undoContext,
  73                                                 term,
  74                                                 dfe.getDefinedTermEditorInput(),
  75                                                 dfe);
  76                                 AbstractUtility.executeOperation(operation);
  77                             }
  78                         }
  79                     } catch (NotDefinedException e) {
  80                         MessagingUtils.error(getClass(), e);
  81                     }
  82                 }
  83                 return null;
  84         }
  85
  86 }