bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/DefaultComparableChildrenProcessor.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.processors;\r
  13 \r
  14 import java.util.Collection;\r
  15 \r
  16 import org.simantics.browsing.ui.BuiltinKeys;\r
  17 import org.simantics.browsing.ui.NodeContext;\r
  18 import org.simantics.browsing.ui.NodeQueryManager;\r
  19 import org.simantics.browsing.ui.NodeContext.QueryKey;\r
  20 import org.simantics.browsing.ui.content.ComparableContext;\r
  21 import org.simantics.browsing.ui.content.ComparableContextFactory;\r
  22 import org.simantics.browsing.ui.content.PrunedChildrenResult;\r
  23 \r
  24 public class DefaultComparableChildrenProcessor extends AbstractNodeQueryProcessor<ComparableContext[]> {\r
  25 \r
  26     private ComparableContext[] build(NodeQueryManager manager, NodeContext context, ComparableContextFactory factory) {\r
  27         PrunedChildrenResult pruned = manager.query(context, BuiltinKeys.PRUNED_CHILDREN);\r
  28         NodeContext[] prunedChildren = pruned.getPrunedChildren();\r
  29         return factory.create(manager, context, prunedChildren);\r
  30     }\r
  31 \r
  32     @Override\r
  33     public ComparableContext[] query(NodeQueryManager manager, NodeContext context) {\r
  34         Collection<ComparableContextFactory> factories = manager.query(context, BuiltinKeys.COMPARABLE_FACTORIES);\r
  35         if(factories.isEmpty())\r
  36             return null;\r
  37 \r
  38         // TODO: use SelectedComparatorFactory query instead of this "educated guess"\r
  39         ComparableContextFactory factory = factories.iterator().next();\r
  40 \r
  41         return build(manager, context, factory);\r
  42     }\r
  43 \r
  44     @Override\r
  45     public String toString() {\r
  46         return "ComparableProcessor";\r
  47     }\r
  48 \r
  49     @Override\r
  50     public QueryKey<ComparableContext[]> getIdentifier() {\r
  51         return BuiltinKeys.COMPARABLE_CHILDREN;\r
  52     }\r
  53 \r
  54 }