bundles/org.simantics.charts/src/org/simantics/charts/ui/ChartSorterRule.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2011 Association for Decentralized Information Management in\r
   3  * 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.charts.ui;\r
  13 \r
  14 import java.util.Collections;\r
  15 import java.util.Comparator;\r
  16 import java.util.List;\r
  17 \r
  18 import org.simantics.browsing.ui.BuiltinKeys;\r
  19 import org.simantics.browsing.ui.NodeContext;\r
  20 import org.simantics.browsing.ui.model.browsecontexts.BrowseContext;\r
  21 import org.simantics.browsing.ui.model.sorters.Sorter;\r
  22 import org.simantics.browsing.ui.model.sorters.SorterRule;\r
  23 import org.simantics.charts.query.TrendItemQuery;\r
  24 import org.simantics.db.ReadGraph;\r
  25 import org.simantics.db.Resource;\r
  26 import org.simantics.db.exception.DatabaseException;\r
  27 import org.simantics.db.exception.RuntimeDatabaseException;\r
  28 import org.simantics.trend.configuration.TrendItem;\r
  29 \r
  30 public class ChartSorterRule implements SorterRule, Sorter {\r
  31 \r
  32         @Override\r
  33         public boolean isCompatible(Class<?> contentType) {\r
  34                 return contentType.equals(Resource.class);\r
  35         }\r
  36 \r
  37         @Override\r
  38         public Sorter getSorter(ReadGraph graph, Object content) throws DatabaseException {\r
  39                 return this;\r
  40         }\r
  41         \r
  42         @Override\r
  43         public void sort(ReadGraph graph, BrowseContext context, List<NodeContext> nodes) throws DatabaseException \r
  44         {\r
  45                 try {\r
  46                         ChartItemComparator cic = new ChartItemComparator();\r
  47                         cic.graph = graph;\r
  48                         Collections.sort(nodes, cic);\r
  49                 } catch (RuntimeDatabaseException e) {\r
  50                         if (e.getCause()!=null && e.getCause() instanceof DatabaseException) throw (DatabaseException) e.getCause();\r
  51                         throw e;\r
  52                 }\r
  53                 \r
  54         }\r
  55         \r
  56         static class ChartItemComparator implements Comparator<NodeContext> {\r
  57                 ReadGraph graph;\r
  58 \r
  59                 @Override\r
  60                 public int compare(NodeContext nc1, NodeContext nc2) {\r
  61                         Resource r1 = (Resource) nc1.getConstant(BuiltinKeys.INPUT);\r
  62                         Resource r2 = (Resource) nc2.getConstant(BuiltinKeys.INPUT);\r
  63                         \r
  64                         try {\r
  65                                 TrendItem ti1 = graph.sync( new TrendItemQuery(r1) );\r
  66                                 TrendItem ti2 = graph.sync( new TrendItemQuery(r2) );\r
  67                                 return ti1.compareTo(ti2);\r
  68                         } catch (DatabaseException e) {\r
  69                                 throw new RuntimeDatabaseException(e);\r
  70                         }\r
  71                 }\r
  72         }\r
  73 \r
  74         \r
  75 }\r