bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/DefaultSelectedViewpointProcessor.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.Viewpoint;\r
  21 import org.simantics.browsing.ui.content.ViewpointFactory;\r
  22 \r
  23 public class DefaultSelectedViewpointProcessor extends AbstractNodeQueryProcessor<Viewpoint> {\r
  24 \r
  25     @Override\r
  26     public QueryKey<Viewpoint> getIdentifier() {\r
  27         return BuiltinKeys.SELECTED_VIEWPOINT;\r
  28     }\r
  29 \r
  30     @Override\r
  31     public Viewpoint query(NodeQueryManager manager, NodeContext context) {\r
  32         Collection<ViewpointFactory> factories = manager.query(context, BuiltinKeys.VIEWPOINT_FACTORIES);\r
  33         if (factories.isEmpty())\r
  34             return null;\r
  35 \r
  36         ViewpointFactory selectedFactory = manager.query(context, new BuiltinKeys.SelectedViewpointFactoryKey(factories));\r
  37         if (selectedFactory == null)\r
  38             return null;\r
  39 \r
  40         return manager.query(context, new BuiltinKeys.ViewpointKey(selectedFactory));\r
  41     }\r
  42 \r
  43     @Override\r
  44     public String toString() {\r
  45         return "SelectedViewpointProcessor";\r
  46     }\r
  47 \r
  48 }