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.contributor.viewpoint;
14 import java.util.Collection;
15 import java.util.Collections;
17 import org.simantics.browsing.ui.BuiltinKeys;
18 import org.simantics.browsing.ui.BuiltinKeys.ViewpointContributionKey;
19 import org.simantics.browsing.ui.NodeContext;
20 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
21 import org.simantics.browsing.ui.Tester;
22 import org.simantics.browsing.ui.common.NodeContextUtil;
23 import org.simantics.browsing.ui.content.Contributor;
24 import org.simantics.browsing.ui.content.ViewpointContribution;
25 import org.simantics.browsing.ui.content.ViewpointContributionFactory;
26 import org.simantics.browsing.ui.graph.impl.contribution.ViewpointContributionImpl;
27 import org.simantics.db.ReadGraph;
28 import org.simantics.db.exception.DatabaseException;
29 import org.simantics.db.layer0.exception.InvalidVariableException;
30 import org.simantics.layer0.Layer0;
31 import org.simantics.operation.Layer0X;
32 import org.simantics.utils.ReflectionUtils;
34 abstract public class ViewpointContributorImpl<T> implements Contributor<ViewpointContributionFactory> {
36 abstract public Collection<?> getContribution(ReadGraph graph, T input) throws DatabaseException;
38 abstract public String getViewpointId();
40 final private Class<?> clazz;
43 protected Layer0X L0X;
46 public Tester getNodeContextTester() {
50 public ViewpointContributorImpl() {
51 clazz = ReflectionUtils.getSingleParameterType(getClass());
54 public ViewpointContributorImpl(Class<?> clazz) {
59 public ViewpointContributionFactory getFactory() {
61 return new ViewpointContributionFactory() {
64 public String getViewpointId() {
65 return ViewpointContributorImpl.this.getViewpointId();
69 public ViewpointContribution create(final PrimitiveQueryUpdater updater, NodeContext context, final ViewpointContributionKey key) {
71 return new ViewpointContributionImpl(updater, context, key) {
73 @SuppressWarnings("unchecked")
75 public Collection<NodeContext> children(ReadGraph graph, NodeContext context) throws DatabaseException {
78 T input = (T)context.getConstant(BuiltinKeys.INPUT);
79 L0 = Layer0.getInstance(graph);
80 L0X = Layer0X.getInstance(graph);
81 return NodeContextUtil.toContextCollectionWithInput(ViewpointContributorImpl.this, ViewpointContributorImpl.this.getContribution(graph, input));
82 } catch (InvalidVariableException e) {
83 return Collections.emptyList();
89 public Tester getNodeContextTester() {
90 return ViewpointContributorImpl.this.getNodeContextTester();
94 public Class<?> getInputClass() {
95 return ViewpointContributorImpl.this.getInputClass();
107 public Class<?> getInputClass() {