bundles/org.simantics.browsing.ui.common/src/org/simantics/browsing/ui/common/processors/DefaultSelectedViewpointProcessor.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in 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.browsing.ui.common.processors;
  13
  14 import java.util.Collection;
  15
  16 import org.simantics.browsing.ui.BuiltinKeys;
  17 import org.simantics.browsing.ui.NodeContext;
  18 import org.simantics.browsing.ui.NodeQueryManager;
  19 import org.simantics.browsing.ui.NodeContext.QueryKey;
  20 import org.simantics.browsing.ui.content.Viewpoint;
  21 import org.simantics.browsing.ui.content.ViewpointFactory;
  22
  23 public class DefaultSelectedViewpointProcessor extends AbstractNodeQueryProcessor<Viewpoint> {
  24
  25     @Override
  26     public QueryKey<Viewpoint> getIdentifier() {
  27         return BuiltinKeys.SELECTED_VIEWPOINT;
  28     }
  29
  30     @Override
  31     public Viewpoint query(NodeQueryManager manager, NodeContext context) {
  32         Collection<ViewpointFactory> factories = manager.query(context, BuiltinKeys.VIEWPOINT_FACTORIES);
  33         if (factories.isEmpty())
  34             return null;
  35
  36         ViewpointFactory selectedFactory = manager.query(context, new BuiltinKeys.SelectedViewpointFactoryKey(factories));
  37         if (selectedFactory == null)
  38             return null;
  39
  40         return manager.query(context, new BuiltinKeys.ViewpointKey(selectedFactory));
  41     }
  42
  43     @Override
  44     public String toString() {
  45         return "SelectedViewpointProcessor";
  46     }
  47
  48 }