1 /*******************************************************************************
2 * Copyright (c) 2007, 2011 Association for Decentralized Information Management in
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
10 * VTT Technical Research Centre of Finland - initial API and implementation
11 *******************************************************************************/
12 package org.simantics.charts.ui;
14 import java.util.List;
16 import org.simantics.Simantics;
17 import org.simantics.charts.ontology.ChartResource;
18 import org.simantics.databoard.util.ObjectUtils;
19 import org.simantics.db.ReadGraph;
20 import org.simantics.db.Resource;
21 import org.simantics.db.WriteGraph;
22 import org.simantics.db.common.request.WriteRequest;
23 import org.simantics.db.exception.DatabaseException;
24 import org.simantics.db.layer0.SelectionHints;
25 import org.simantics.db.layer0.adapter.DropActionFactory;
26 import org.simantics.db.layer0.request.PossibleModel;
27 import org.simantics.modeling.ModelingResources;
28 import org.simantics.utils.ui.ErrorLogger;
29 import org.simantics.utils.ui.ISelectionUtils;
32 * @author Tuukka Lehtonen
34 public class ChartItemDropActionFactory implements DropActionFactory {
37 public Runnable create(ReadGraph g, Object target, Object source, int operation) throws DatabaseException {
38 //System.out.println("DROP: " + source + " -> " + target);
40 final Resource chartItem = ISelectionUtils.getSinglePossibleKey(target, SelectionHints.KEY_MAIN, Resource.class);
41 if (chartItem == null)
43 Resource targetModel = g.syncRequest(new PossibleModel(chartItem));
45 List<Resource> srcs = ISelectionUtils.getPossibleKeys(source, SelectionHints.KEY_MAIN, Resource.class);
46 ModelingResources MOD = ModelingResources.getInstance(g);
48 Resource subscriptionItem = null;
50 for (Resource res : srcs) {
51 if (g.isInstanceOf(res, MOD.Subscription_Item)) {
52 // Too much stuff dropped in one go.
53 if (subscriptionItem != null)
56 Resource model = g.syncRequest(new PossibleModel(res));
57 if (ObjectUtils.objectEquals(targetModel, model)) {
58 subscriptionItem = res;
62 if (subscriptionItem != null)
63 return setSubscriptionItem(chartItem, subscriptionItem);
68 private Runnable setSubscriptionItem(final Resource chartItem, final Resource subscriptionItem) {
69 return new Runnable() {
72 Simantics.getSession().asyncRequest(new WriteRequest() {
74 public void perform(WriteGraph graph) throws DatabaseException {
75 ChartResource CHART = ChartResource.getInstance(graph);
76 graph.deny(chartItem, CHART.Chart_Item_HasSubscriptionItem);
77 graph.claim(chartItem, CHART.Chart_Item_HasSubscriptionItem, subscriptionItem);
81 ErrorLogger.defaultLogError(e);