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.viewers.IStructuredSelection;
  19 import org.eclipse.ui.IEditorPart;
  20 import org.eclipse.ui.handlers.HandlerUtil;
  21
  22 import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;
  23 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  24 import eu.etaxonomy.taxeditor.editor.key.KeyEditor;
  25 import eu.etaxonomy.taxeditor.editor.key.polytomous.IPolytomousKeyEditorPage;
  26 import eu.etaxonomy.taxeditor.editor.key.polytomous.operation.DeleteNodeOperation;
  27 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  28
  29 /**
  30  * @author n.hoffmann
  31  * @created Dec 6, 2010
  32  * @version 1.0
  33  */
  34 public class DeleteNodeHandler extends AbstractHandler {
  35
  36         /*
  37          * (non-Javadoc)
  38          *
  39          * @see
  40          * org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
  41          * ExecutionEvent)
  42          */
  43         @Override
  44         public Object execute(ExecutionEvent event) throws ExecutionException {
  45                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  46
  47                 if (editor instanceof KeyEditor) {
  48                         IPolytomousKeyEditorPage editorPage = (IPolytomousKeyEditorPage) ((KeyEditor) editor)
  49                                         .getActiveEditor();
  50
  51                         IStructuredSelection selection = (IStructuredSelection) HandlerUtil
  52                                         .getCurrentSelection(event);
  53
  54                         if (selection.getFirstElement() instanceof PolytomousKeyNode) {
  55                                 try {
  56                                         String label = event.getCommand().getName();
  57                                         IUndoContext undoContext = EditorUtil.getUndoContext();
  58
  59                                         for (Object element : selection.toArray()) {
  60                                                 PolytomousKeyNode keyNode = (PolytomousKeyNode) element;
  61
  62                                                 AbstractPostOperation operation = new DeleteNodeOperation(
  63                                                                 label, undoContext, keyNode, editorPage);
  64                                                 EditorUtil.executeOperation(operation);
  65                                         }
  66
  67                                 } catch (NotDefinedException e) {
  68                                         EditorUtil.warn(getClass(), "Command name not set.");
  69                                 }
  70
  71                         }
  72                 }
  73
  74                 return null;
  75         }
  76
  77 }