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.api.application.ICdmApplicationConfiguration;
  24 import eu.etaxonomy.cdm.api.service.IPolytomousKeyNodeService;
  25 import eu.etaxonomy.cdm.hibernate.HibernateProxyHelper;
  26 import eu.etaxonomy.cdm.model.description.PolytomousKeyNode;
  27 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  28 import eu.etaxonomy.taxeditor.editor.key.KeyEditor;
  29 import eu.etaxonomy.taxeditor.editor.key.polytomous.IPolytomousKeyEditorPage;
  30 import eu.etaxonomy.taxeditor.editor.key.polytomous.operation.DeleteNodeOperation;
  31 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  32 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  33 import eu.etaxonomy.taxeditor.store.CdmStore;
  34
  35 /**
  36  * @author n.hoffmann
  37  * @created Dec 6, 2010
  38  * @version 1.0
  39  */
  40 public class DeleteNodeHandler extends AbstractHandler {
  41
  42         /*
  43          * (non-Javadoc)
  44          *
  45          * @see
  46          * org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.
  47          * ExecutionEvent)
  48          */
  49         @Override
  50         public Object execute(ExecutionEvent event) throws ExecutionException {
  51                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  52
  53                 if (editor.isDirty()){
  54                         boolean proceed = MessageDialog.openQuestion(null,
  55                                         "Save changes", "You have made changes that must be saved before you can delete the node. Would you like to proceed?");
  56                         if (!proceed) {
  57                                 return null;
  58                         }else{
  59                                 editor.doSave(EditorUtil.getMonitor());
  60                         }
  61                 }
  62                 if (editor instanceof KeyEditor) {
  63                         IPolytomousKeyEditorPage editorPage = (IPolytomousKeyEditorPage) ((KeyEditor) editor)
  64                                         .getActiveEditor();
  65
  66                         IStructuredSelection selection = (IStructuredSelection) HandlerUtil
  67                                         .getCurrentSelection(event);
  68
  69                         if (selection.getFirstElement() instanceof PolytomousKeyNode) {
  70                                 try {
  71                                         String label = event.getCommand().getName();
  72                                         IUndoContext undoContext = EditorUtil.getUndoContext();
  73
  74                                         for (Object element : selection.toArray()) {
  75                                                 PolytomousKeyNode keyNode = HibernateProxyHelper.deproxy(element, PolytomousKeyNode.class);
  76
  77                                                 AbstractPostOperation operation = new DeleteNodeOperation(
  78                                                                 label, undoContext, keyNode, editorPage);
  79                                                 EditorUtil.executeOperation(operation);
  80                                         }
  81
  82                                 } catch (NotDefinedException e) {
  83                                         MessagingUtils.warn(getClass(), "Command name not set.");
  84                                 }
  85                         } else {
  86                         MessageDialog.openInformation(
  87                                 EditorUtil.getShell(),
  88                                 "No Key Node Selected",
  89                                 "Please right-click on a specific key node to delete a key node.");
  90                         }
  91                 }
  92
  93                 return null;
  94         }
  95
  96 }