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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management\r
   3  * in Industry THTH ry.\r
   4  * All rights reserved. This program and the accompanying materials\r
   5  * are made available under the terms of the Eclipse Public License v1.0\r
   6  * which accompanies this distribution, and is available at\r
   7  * http://www.eclipse.org/legal/epl-v10.html\r
   8  *\r
   9  * Contributors:\r
  10  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.browsing.ui.graph.impl;\r
  13 \r
  14 import java.util.Collection;\r
  15 \r
  16 import org.simantics.browsing.ui.NodeContext;\r
  17 import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
  18 import org.simantics.browsing.ui.Tester;\r
  19 import org.simantics.browsing.ui.BuiltinKeys.ViewpointContributionKey;\r
  20 import org.simantics.browsing.ui.content.Contributor;\r
  21 import org.simantics.browsing.ui.content.ViewpointContribution;\r
  22 import org.simantics.browsing.ui.content.ViewpointContributionFactory;\r
  23 import org.simantics.browsing.ui.graph.impl.contribution.ViewpointContributionImpl;\r
  24 import org.simantics.db.ReadGraph;\r
  25 import org.simantics.db.exception.DatabaseException;\r
  26 import org.simantics.utils.ReflectionUtils;\r
  27 \r
  28 abstract public class LazyViewpointContributionContributor<InputClass> implements Contributor<ViewpointContributionFactory> {\r
  29 \r
  30     abstract public Collection<NodeContext> children(ReadGraph graph, NodeContext context, PrimitiveQueryUpdater updater, ViewpointContributionKey key, ViewpointContributionImpl contribution) throws DatabaseException;\r
  31     abstract public String getViewpointId();\r
  32     \r
  33     final private Class<?> clazz;\r
  34 \r
  35     public LazyViewpointContributionContributor() {\r
  36         clazz = ReflectionUtils.getSingleParameterType(getClass());\r
  37     }\r
  38 \r
  39     @Override\r
  40     public ViewpointContributionFactory getFactory() {\r
  41 \r
  42         return new ViewpointContributionFactory() {\r
  43                         \r
  44                         @Override\r
  45                         public String getViewpointId() {\r
  46                                 return LazyViewpointContributionContributor.this.getViewpointId();\r
  47                         }\r
  48                         \r
  49                         @Override\r
  50                         public ViewpointContribution create(final PrimitiveQueryUpdater updater, NodeContext context, final ViewpointContributionKey key) {\r
  51                                 \r
  52                         return new ViewpointContributionImpl(updater, context, key) {\r
  53 \r
  54                             @Override\r
  55                             public Collection<NodeContext> children(ReadGraph graph, NodeContext context) throws DatabaseException {\r
  56 \r
  57                                 return LazyViewpointContributionContributor.this.children(graph, context, updater, key, this);\r
  58 \r
  59                             }\r
  60 \r
  61                             @Override\r
  62                             public Tester getNodeContextTester() {\r
  63                                 return LazyViewpointContributionContributor.this.getNodeContextTester();\r
  64                             }\r
  65 \r
  66                                         @Override\r
  67                                         public Class<?> getInputClass() {\r
  68                                 return LazyViewpointContributionContributor.this.getInputClass();\r
  69                                         }\r
  70 \r
  71                         };\r
  72                         \r
  73                         }\r
  74                         \r
  75                 };\r
  76                 \r
  77     }\r
  78     \r
  79     @Override\r
  80     public Class<?> getInputClass() {\r
  81         return clazz;\r
  82     }\r
  83 \r
  84 }\r