bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/LazyViewpointContributionContributor.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in 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.browsing.ui.graph.impl;
  13
  14 import java.util.Collection;
  15
  16 import org.simantics.browsing.ui.NodeContext;
  17 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
  18 import org.simantics.browsing.ui.Tester;
  19 import org.simantics.browsing.ui.BuiltinKeys.ViewpointContributionKey;
  20 import org.simantics.browsing.ui.content.Contributor;
  21 import org.simantics.browsing.ui.content.ViewpointContribution;
  22 import org.simantics.browsing.ui.content.ViewpointContributionFactory;
  23 import org.simantics.browsing.ui.graph.impl.contribution.ViewpointContributionImpl;
  24 import org.simantics.db.ReadGraph;
  25 import org.simantics.db.exception.DatabaseException;
  26 import org.simantics.utils.ReflectionUtils;
  27
  28 abstract public class LazyViewpointContributionContributor<InputClass> implements Contributor<ViewpointContributionFactory> {
  29
  30     abstract public Collection<NodeContext> children(ReadGraph graph, NodeContext context, PrimitiveQueryUpdater updater, ViewpointContributionKey key, ViewpointContributionImpl contribution) throws DatabaseException;
  31     abstract public String getViewpointId();
  32
  33     final private Class<?> clazz;
  34
  35     public LazyViewpointContributionContributor() {
  36         clazz = ReflectionUtils.getSingleParameterType(getClass());
  37     }
  38
  39     @Override
  40     public ViewpointContributionFactory getFactory() {
  41
  42         return new ViewpointContributionFactory() {
  43
  44                         @Override
  45                         public String getViewpointId() {
  46                                 return LazyViewpointContributionContributor.this.getViewpointId();
  47                         }
  48
  49                         @Override
  50                         public ViewpointContribution create(final PrimitiveQueryUpdater updater, NodeContext context, final ViewpointContributionKey key) {
  51
  52                         return new ViewpointContributionImpl(updater, context, key) {
  53
  54                             @Override
  55                             public Collection<NodeContext> children(ReadGraph graph, NodeContext context) throws DatabaseException {
  56
  57                                 return LazyViewpointContributionContributor.this.children(graph, context, updater, key, this);
  58
  59                             }
  60
  61                             @Override
  62                             public Tester getNodeContextTester() {
  63                                 return LazyViewpointContributionContributor.this.getNodeContextTester();
  64                             }
  65
  66                                         @Override
  67                                         public Class<?> getInputClass() {
  68                                 return LazyViewpointContributionContributor.this.getInputClass();
  69                                         }
  70
  71                         };
  72
  73                         }
  74
  75                 };
  76
  77     }
  78
  79     @Override
  80     public Class<?> getInputClass() {
  81         return clazz;
  82     }
  83
  84 }