taxeditor-editor/src/main/java/eu/etaxonomy/taxeditor/editor/descriptiontree/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.editor.descriptiontree.handler;
  12
  13 import org.apache.log4j.Logger;
  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.IUndoableOperation;
  19 import org.eclipse.jface.viewers.ISelection;
  20 import org.eclipse.jface.viewers.TreePath;
  21 import org.eclipse.jface.viewers.TreeSelection;
  22 import org.eclipse.ui.IEditorInput;
  23 import org.eclipse.ui.IEditorPart;
  24 import org.eclipse.ui.forms.editor.FormEditor;
  25 import org.eclipse.ui.handlers.HandlerUtil;
  26
  27 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  28 import eu.etaxonomy.cdm.model.description.TaxonDescription;
  29 import eu.etaxonomy.cdm.model.media.ImageFile;
  30 import eu.etaxonomy.cdm.model.taxon.Taxon;
  31 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  32 import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
  33 import eu.etaxonomy.taxeditor.operations.DeleteDescriptionElementOperation;
  34 import eu.etaxonomy.taxeditor.operations.DeleteImageOperation;
  35 import eu.etaxonomy.taxeditor.operations.DeleteTaxonDescriptionOperation;
  36 import eu.etaxonomy.taxeditor.operations.IPostOperationEnabled;
  37
  38 /**
  39  * @author n.hoffmann
  40  * @created Jan 19, 2010
  41  * @version 1.0
  42  */
  43 public class DeleteHandler extends AbstractHandler {
  44         private static final Logger logger = Logger.getLogger(DeleteHandler.class);
  45
  46         /* (non-Javadoc)
  47          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  48          */
  49         public Object execute(ExecutionEvent event) throws ExecutionException {
  50                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  51                 if (editor instanceof FormEditor) {
  52                         editor = ((FormEditor) editor).getActiveEditor();
  53                 }
  54                 IEditorInput input = editor.getEditorInput();
  55                 if (input instanceof TaxonEditorInput) {
  56                         Taxon taxon = ((TaxonEditorInput) input).getTaxon();
  57                         ISelection selection = HandlerUtil.getCurrentSelection(event);
  58
  59                         Object deleteElement = ((TreeSelection) selection).getFirstElement();
  60
  61                         IUndoableOperation operation = null;
  62                         try {
  63
  64                                 if (deleteElement instanceof DescriptionElementBase) {
  65                                         DescriptionElementBase descriptionElement = (DescriptionElementBase) deleteElement;
  66                                         // TODO use undo context specific to editor
  67                                         operation = new DeleteDescriptionElementOperation(event.getCommand().getName(),
  68                                                         EditorUtil.getUndoContext(), taxon, descriptionElement, (IPostOperationEnabled) editor);
  69                                 }else if (deleteElement instanceof ImageFile) {
  70                                         ImageFile imageFile = (ImageFile) deleteElement;
  71                                         TreePath[] paths = ((TreeSelection) selection).getPaths();
  72                                         TaxonDescription description = (TaxonDescription) (paths[0]).getFirstSegment();
  73                                         operation = new DeleteImageOperation(event.getCommand().getName(),
  74                                                         EditorUtil.getUndoContext(), taxon, description, imageFile, (IPostOperationEnabled) editor);
  75                                 }else if(deleteElement instanceof TaxonDescription){
  76
  77                                         TaxonDescription description = (TaxonDescription) deleteElement;
  78                                         // TODO use undo context specific to editor
  79                                         operation = new DeleteTaxonDescriptionOperation(event.getCommand().getName(),
  80                                                         EditorUtil.getUndoContext(), taxon, description, (IPostOperationEnabled) editor);
  81                                         EditorUtil.executeOperation(operation);
  82                                 }
  83
  84                                 EditorUtil.executeOperation(operation);
  85                         } catch (NotDefinedException e) {
  86                                 logger.warn("Command name not set");
  87                         }
  88                 }
  89                 return null;
  90         }
  91 }