bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/SuperTypeOfViewpointFactory.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 import java.util.function.Consumer;\r
  16 \r
  17 import org.simantics.browsing.ui.BuiltinKeys;\r
  18 import org.simantics.browsing.ui.BuiltinKeys.ViewpointKey;\r
  19 import org.simantics.browsing.ui.DataSource;\r
  20 import org.simantics.browsing.ui.NodeContext;\r
  21 import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
  22 import org.simantics.browsing.ui.common.NodeContextUtil;\r
  23 import org.simantics.browsing.ui.common.viewpoints.LazyContainerViewpoint;\r
  24 import org.simantics.browsing.ui.content.Viewpoint;\r
  25 import org.simantics.browsing.ui.content.ViewpointFactory;\r
  26 import org.simantics.db.ReadGraph;\r
  27 import org.simantics.db.Resource;\r
  28 import org.simantics.db.exception.DatabaseException;\r
  29 import org.simantics.layer0.Layer0;\r
  30 \r
  31 public class SuperTypeOfViewpointFactory implements ViewpointFactory {\r
  32 \r
  33     @Override\r
  34     public Viewpoint create(final PrimitiveQueryUpdater updater, final NodeContext context, final ViewpointKey key) {\r
  35         assert(updater != null);\r
  36         assert(context != null);\r
  37 \r
  38         final LazyContainerViewpoint result = new LazyContainerViewpoint();\r
  39 \r
  40         DataSource<ReadGraph> source = updater.getDataSource(ReadGraph.class);\r
  41         if (source == null)\r
  42             return result;\r
  43 \r
  44         final Resource inputResource = (Resource) context.getConstant(BuiltinKeys.INPUT);\r
  45         assert(inputResource != null);\r
  46 \r
  47         source.schedule(new Consumer<ReadGraph>() {\r
  48             @Override\r
  49             public void accept(ReadGraph source) {\r
  50                 try {\r
  51                         Collection<Resource> children = source.getObjects(inputResource, Layer0.getInstance(source).SupertypeOf);\r
  52                         NodeContext[] resultContexts = NodeContextUtil.toContextsWithInput(children);\r
  53                         result.setChildren(updater, resultContexts);\r
  54                         result.setHasChildren(resultContexts.length > 0);\r
  55         \r
  56                         updater.scheduleReplace(context, key, result);\r
  57                 } catch (DatabaseException e) {\r
  58                         \r
  59                 }\r
  60             }\r
  61         });\r
  62 \r
  63         return result;\r
  64     }\r
  65 \r
  66     @Override\r
  67     public String toString() {\r
  68         return "Subtypes";\r
  69     }\r
  70 \r
  71 }\r