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

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