eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/key/polytomous/handler/DeleteNodeHandler.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.editor.key.polytomous.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.core.commands.common.NotDefinedException;
  17 import org.eclipse.core.commands.operations.IUndoContext;
  18 import org.eclipse.jface.dialogs.MessageDialog;
  19 import org.eclipse.jface.viewers.IStructuredSelection;
  20 import org.eclipse.ui.IEditorPart;
  21 import org.eclipse.ui.handlers.HandlerUtil;
  22
  23 import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;
  24 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  25 import eu.etaxonomy.taxeditor.editor.key.KeyEditor;
  26 import eu.etaxonomy.taxeditor.editor.key.polytomous.IPolytomousKeyEditorPage;
  27 import eu.etaxonomy.taxeditor.editor.key.polytomous.operation.DeleteNodeOperation;
  28 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  29 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  30
  31 /**
  32  * @author n.hoffmann
  33  * @created Dec 6, 2010
  34  * @version 1.0
  35  */
  36 public class DeleteNodeHandler extends AbstractHandler {
  37
  38         /*
  39          * (non-Javadoc)
  40          *
  41          * @see
  42          * org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
  43          * ExecutionEvent)
  44          */
  45         @Override
  46         public Object execute(ExecutionEvent event) throws ExecutionException {
  47                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  48
  49                 if (editor instanceof KeyEditor) {
  50                         IPolytomousKeyEditorPage editorPage = (IPolytomousKeyEditorPage) ((KeyEditor) editor)
  51                                         .getActiveEditor();
  52
  53                         IStructuredSelection selection = (IStructuredSelection) HandlerUtil
  54                                         .getCurrentSelection(event);
  55
  56                         if (selection.getFirstElement() instanceof PolytomousKeyNode) {
  57                                 try {
  58                                         String label = event.getCommand().getName();
  59                                         IUndoContext undoContext = EditorUtil.getUndoContext();
  60
  61                                         for (Object element : selection.toArray()) {
  62                                                 PolytomousKeyNode keyNode = (PolytomousKeyNode) element;
  63
  64                                                 AbstractPostOperation operation = new DeleteNodeOperation(
  65                                                                 label, undoContext, keyNode, editorPage);
  66                                                 EditorUtil.executeOperation(operation);
  67                                         }
  68
  69                                 } catch (NotDefinedException e) {
  70                                         MessagingUtils.warn(getClass(), "Command name not set.");
  71                                 }
  72                         } else {
  73                         MessageDialog.openInformation(
  74                                 EditorUtil.getShell(),
  75                                 "No Key Node Selected",
  76                                 "Please right-click on a specific key node to delete a key node.");
  77                         }
  78                 }
  79
  80                 return null;
  81         }
  82
  83 }