bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/contributor/AbstractViewpointContributionContributor.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.common.contributor;\r
  13 \r
  14 import java.util.Collection;\r
  15 import java.util.Collections;\r
  16 \r
  17 import org.simantics.browsing.ui.BuiltinKeys.ViewpointContributionKey;\r
  18 import org.simantics.browsing.ui.NodeContext;\r
  19 import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
  20 import org.simantics.browsing.ui.Tester;\r
  21 import org.simantics.browsing.ui.content.Contributor;\r
  22 import org.simantics.browsing.ui.content.ViewpointContribution;\r
  23 import org.simantics.browsing.ui.content.ViewpointContributionFactory;\r
  24 import org.simantics.utils.ReflectionUtils;\r
  25 \r
  26 /**\r
  27  * @author Antti Villberg\r
  28  *\r
  29  * @param <T> the input type accepted by this contributor\r
  30  */\r
  31 public abstract class AbstractViewpointContributionContributor<T> implements Contributor<ViewpointContributionFactory> {\r
  32 \r
  33     private final Class<?> clazz;\r
  34 \r
  35     public AbstractViewpointContributionContributor() {\r
  36         clazz = ReflectionUtils.getSingleParameterType(getClass());\r
  37     }\r
  38 \r
  39     public AbstractViewpointContributionContributor(Class<?> clazz) {\r
  40         this.clazz = clazz;\r
  41     }\r
  42 \r
  43     @Override\r
  44     public Class<?> getInputClass() {\r
  45         return clazz;\r
  46     }\r
  47 \r
  48     @Override\r
  49     public ViewpointContributionFactory getFactory() {\r
  50 \r
  51         return new ViewpointContributionFactory() {\r
  52 \r
  53             @Override\r
  54             public ViewpointContribution create(final PrimitiveQueryUpdater updater,\r
  55                     final NodeContext context, final ViewpointContributionKey key) {\r
  56 \r
  57                 return new ViewpointContribution() {\r
  58 \r
  59                         Collection<NodeContext> contribution = Collections.emptySet();\r
  60                         \r
  61                         @Override\r
  62                         public Collection<NodeContext> getContribution() {\r
  63 \r
  64                                 Collection<NodeContext> current = AbstractViewpointContributionContributor.this.getContribution(updater, context, key); \r
  65 \r
  66                                 for(NodeContext c : current) updater.incRef(c);\r
  67                                 for(NodeContext c : contribution) updater.decRef(c);\r
  68                                 contribution = current;\r
  69 \r
  70                                 return current;\r
  71                                 \r
  72                         }\r
  73 \r
  74                     @Override\r
  75                     public Class<?> getInputClass() {\r
  76                         return clazz;\r
  77                     }\r
  78 \r
  79                     @Override\r
  80                     public Tester getNodeContextTester() {\r
  81                         return AbstractViewpointContributionContributor.this.getNodeContextTester();\r
  82                     }\r
  83 \r
  84                 };\r
  85 \r
  86             }\r
  87 \r
  88             @Override\r
  89             public String getViewpointId() {\r
  90                 return AbstractViewpointContributionContributor.this.getViewpointId();\r
  91             }\r
  92 \r
  93         };\r
  94 \r
  95     }\r
  96 \r
  97     abstract public Collection<NodeContext> getContribution(PrimitiveQueryUpdater updater,\r
  98             NodeContext context, ViewpointContributionKey key);\r
  99 \r
 100     abstract public String getViewpointId();\r
 101 \r
 102 }\r