bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/DefaultSelectedViewpointFactoryProcessor.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.PrimitiveQueryUpdater;\r
  19 import org.simantics.browsing.ui.BuiltinKeys.SelectedViewpointFactoryKey;\r
  20 import org.simantics.browsing.ui.NodeContext.PrimitiveQueryKey;\r
  21 import org.simantics.browsing.ui.content.ViewpointFactory;\r
  22 \r
  23 public class DefaultSelectedViewpointFactoryProcessor extends AbstractPrimitiveQueryProcessor<ViewpointFactory> {\r
  24 \r
  25     @Override\r
  26     public Object getIdentifier() {\r
  27         return BuiltinKeys.SelectedViewpointFactoryKey.class;\r
  28     }\r
  29 \r
  30     @Override\r
  31     public String toString() {\r
  32         return "SelectedViewpointFactoryProcessor";\r
  33     }\r
  34 \r
  35     @Override\r
  36     public ViewpointFactory query(PrimitiveQueryUpdater updater, NodeContext context,\r
  37             PrimitiveQueryKey<ViewpointFactory> key) {\r
  38         SelectedViewpointFactoryKey k = (SelectedViewpointFactoryKey) key;\r
  39         Collection<ViewpointFactory> factories = k.getParameter(0);\r
  40         if (factories.isEmpty())\r
  41             return null;\r
  42 \r
  43         return factories.iterator().next();\r
  44     }\r
  45 \r
  46 }