eu.etaxonomy.taxeditor.editor/src/main/java/eu/etaxonomy/taxeditor/editor/view/media/handler/MoveImageUpInListHandler.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.view.media.handler;
  11 import org.eclipse.core.commands.AbstractHandler;
  12 import org.eclipse.core.commands.ExecutionEvent;
  13 import org.eclipse.core.commands.ExecutionException;
  14 import org.eclipse.core.commands.common.NotDefinedException;
  15 import org.eclipse.jface.viewers.ISelection;
  16 import org.eclipse.jface.viewers.TreePath;
  17 import org.eclipse.jface.viewers.TreeSelection;
  18 import org.eclipse.ui.IEditorInput;
  19 import org.eclipse.ui.IEditorPart;
  20 import org.eclipse.ui.IWorkbenchPart;
  21 import org.eclipse.ui.forms.editor.FormEditor;
  22 import org.eclipse.ui.handlers.HandlerUtil;
  23
  24 import eu.etaxonomy.cdm.model.description.DescriptionBase;
  25 import eu.etaxonomy.cdm.model.media.Media;
  26 import eu.etaxonomy.cdm.model.taxon.Taxon;
  27 import eu.etaxonomy.taxeditor.editor.EditorUtil;
  28 import eu.etaxonomy.taxeditor.editor.TaxonEditorInput;
  29 import eu.etaxonomy.taxeditor.editor.view.media.operation.MoveMediaInListOperation;
  30 import eu.etaxonomy.taxeditor.model.MessagingUtils;
  31 import eu.etaxonomy.taxeditor.operation.AbstractPostOperation;
  32 import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;
  33
  34 /**
  35  * <p>MoveImageUpInListHandler class.</p>
  36  *
  37  * @author p.ciardelli
  38  * @created 11.08.2009
  39  * @version 1.0
  40  */
  41 public class MoveImageUpInListHandler extends AbstractHandler {
  42
  43         /* (non-Javadoc)
  44          * @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent)
  45          */
  46         /** {@inheritDoc} */
  47         public Object execute(ExecutionEvent event) throws ExecutionException {
  48                 IWorkbenchPart part = HandlerUtil.getActivePart(event);
  49                 IPostOperationEnabled postOperationEnabled = (part instanceof IPostOperationEnabled) ? (IPostOperationEnabled) part : null;
  50
  51                 IEditorPart editor = HandlerUtil.getActiveEditor(event);
  52                 if (editor instanceof FormEditor) {
  53                         editor = ((FormEditor) editor).getActiveEditor();
  54                 }
  55                 IEditorInput input = editor.getEditorInput();
  56                 if (input instanceof TaxonEditorInput) {
  57                         Taxon taxon = ((TaxonEditorInput) input).getTaxon();
  58
  59                         ISelection selection = HandlerUtil.getCurrentSelection(event);
  60                         if (selection instanceof TreeSelection) {
  61                                 TreePath[] paths = ((TreeSelection) selection).getPaths();
  62                                 int count = paths[0].getSegmentCount();
  63                                 DescriptionBase element = null;
  64                                 for (int i = 0; i < count; i++ ) {
  65                                         if (paths[0].getSegment(i) instanceof DescriptionBase) {
  66                                                 element = (DescriptionBase) paths[0].getSegment(i);
  67                                                 break;
  68                                         }
  69                                 }
  70                                 Media media = (Media) paths[0].getLastSegment();
  71                                 AbstractPostOperation operation = null;
  72                                 try {
  73                                         // TODO use undo context specific to editor
  74                                         operation = new MoveMediaInListOperation(event.getCommand().getName(),
  75                                                         EditorUtil.getUndoContext(), taxon, element, media, MoveMediaInListOperation.UP, postOperationEnabled);
  76                                         EditorUtil.executeOperation(operation);
  77                                 } catch (NotDefinedException e) {
  78                                         MessagingUtils.warn(getClass(), "Command name not set.");
  79                                 }
  80                         }
  81                 }
  82                 return null;
  83         }
  84
  85 }