bundles/org.simantics.modeling.template2d.ui/src/org/simantics/modeling/template2d/ui/actions/MoveDown.java

   1 /*******************************************************************************
   2  * Copyright (c) 2012 Association for Decentralized Information Management in
   3  * Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.modeling.template2d.ui.actions;
  13
  14 import org.simantics.db.Resource;
  15 import org.simantics.db.WriteGraph;
  16 import org.simantics.db.common.request.WriteRequest;
  17 import org.simantics.db.common.utils.ListUtils;
  18 import org.simantics.db.exception.DatabaseException;
  19 import org.simantics.db.layer0.adapter.ActionFactory;
  20 import org.simantics.layer0.Layer0;
  21 import org.simantics.scenegraph.ontology.ScenegraphResources;
  22 import org.simantics.ui.SimanticsUI;
  23
  24 public class MoveDown implements ActionFactory {
  25
  26         @Override
  27     public Runnable create(Object target) {
  28         if(!(target instanceof Resource))
  29             return null;
  30         final Resource selection = (Resource)target;
  31
  32         return new Runnable() {
  33             @Override
  34             public void run() {
  35                 SimanticsUI.getSession().asyncRequest(new WriteRequest() {
  36                     @Override
  37                     public void perform(WriteGraph g) throws DatabaseException {
  38                         g.markUndoPoint();
  39
  40                         Layer0 L0 = Layer0.getInstance(g);
  41                         ScenegraphResources SG = ScenegraphResources.getInstance(g);
  42
  43                         Resource parent = g.getPossibleObject(selection, L0.PartOf);
  44                         if (parent == null)
  45                                 return;
  46
  47                         Resource list = g.getPossibleObject(parent, SG.Node_children);
  48                         if (list == null)
  49                                 return;
  50
  51                         ListUtils.swapWithNext(g, list, selection);
  52                     }
  53                 });
  54             }
  55         };
  56     }
  57 }