taxeditor-editor/src/main/java/eu/etaxonomy/taxeditor/editor/descriptiontree/handler/MoveImageDownInListHandler.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 package eu.etaxonomy.taxeditor.editor.descriptiontree.handler;
  11 import org.apache.log4j.Logger;
  12 import org.eclipse.core.commands.AbstractHandler;
  13 import org.eclipse.core.commands.ExecutionEvent;
  14 import org.eclipse.core.commands.ExecutionException;
  15 import org.eclipse.core.commands.common.NotDefinedException;
  16 import org.eclipse.core.commands.operations.IUndoableOperation;
  17 import org.eclipse.jface.viewers.ISelection;
  18 import org.eclipse.jface.viewers.TreePath;
  19 import org.eclipse.jface.viewers.TreeSelection;
  20 import org.eclipse.ui.IEditorInput;
  21 import org.eclipse.ui.IEditorPart;
  22 import org.eclipse.ui.forms.editor.FormEditor;
  23 import org.eclipse.ui.handlers.HandlerUtil;
  24
  25 import eu.etaxonomy.cdm.api.utility.ImagesUtility;
  26 import eu.etaxonomy.cdm.model.description.DescriptionElementBase;
  27 import eu.etaxonomy.cdm.model.media.ImageFile;
  28 import eu.etaxonomy.cdm.model.taxon.Taxon;
  29 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  30 import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
  31 import eu.etaxonomy.taxeditor.operations.IPostOperationEnabled;
  32 import eu.etaxonomy.taxeditor.operations.MoveImageInListOperation;
  33
  34 /**
  35  * @author p.ciardelli
  36  * @created 11.08.2009
  37  * @version 1.0
  38  */
  39 public class MoveImageDownInListHandler extends AbstractHandler {
  40         private static final Logger logger = Logger
  41                         .getLogger(CreateDescriptionElementHandler.class);
  42
  43         /* (non-Javadoc)
  44          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  45          */
  46         public Object execute(ExecutionEvent event) throws ExecutionException {
  47
  48                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  49                 if (editor instanceof FormEditor) {
  50                         editor = ((FormEditor) editor).getActiveEditor();
  51                 }
  52                 IEditorInput input = editor.getEditorInput();
  53                 if (input instanceof TaxonEditorInput) {
  54                         Taxon taxon = ((TaxonEditorInput) input).getTaxon();
  55
  56                         ISelection selection = HandlerUtil.getCurrentSelection(event);
  57                         if (selection instanceof TreeSelection) {
  58                                 TreePath[] paths = ((TreeSelection) selection).getPaths();
  59                                 int count = paths[0].getSegmentCount();
  60                                 DescriptionElementBase element = null;
  61                                 for (int i = 0; i < count; i++ ) {
  62                                         if (paths[0].getSegment(i) instanceof DescriptionElementBase) {
  63                                                 element = (DescriptionElementBase) paths[0].getSegment(i);
  64                                                 break;
  65                                         }
  66                                 }
  67                                 ImageFile image = (ImageFile) paths[0].getLastSegment();
  68                                 IUndoableOperation operation = null;
  69                                 try {
  70                                         // TODO use undo context specific to editor
  71                                         operation = new MoveImageInListOperation(event.getCommand().getName(),
  72                                                         EditorUtil.getUndoContext(), taxon, element, image, ImagesUtility.DOWN, (IPostOperationEnabled) editor);
  73                                         EditorUtil.executeOperation(operation);
  74                                 } catch (NotDefinedException e) {
  75                                         logger.warn("Command name not set");
  76                                 }
  77                         }
  78                 }
  79                 return null;
  80         }
  81
  82 }