1 /*******************************************************************************
2 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
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.browsing.ui.graph.impl.contribution;
14 import java.util.Collection;
16 import org.simantics.browsing.ui.NodeContext;
17 import org.simantics.browsing.ui.Tester;
18 import org.simantics.db.ReadGraph;
19 import org.simantics.db.exception.DatabaseException;
24 * @author Antti Villberg
26 public interface GraphContribution {
31 * @return a collection of contributions, must not be <code>null</code>
32 * @throws DatabaseException
34 public Collection<NodeContext> children(ReadGraph graph, NodeContext context) throws DatabaseException;
37 * @return <code>null</code> if there is no tester
39 public Tester getNodeContextTester();