bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contributor/imager/ImageDecoratorContributorImpl.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.graph.impl.contributor.imager;
  13
  14 import org.simantics.browsing.ui.BuiltinKeys;
  15 import org.simantics.browsing.ui.BuiltinKeys.ImageDecoratorKey;
  16 import org.simantics.browsing.ui.NodeContext;
  17 import org.simantics.browsing.ui.PrimitiveQueryUpdater;
  18 import org.simantics.browsing.ui.Tester;
  19 import org.simantics.browsing.ui.content.Contributor;
  20 import org.simantics.browsing.ui.content.ImageDecorator;
  21 import org.simantics.browsing.ui.content.ImageDecoratorFactory;
  22 import org.simantics.browsing.ui.graph.impl.contribution.ImageDecoratorContributionImpl;
  23 import org.simantics.db.ReadGraph;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.utils.ReflectionUtils;
  26
  27 /**
  28  * @author Tuukka Lehtonen
  29  *
  30  * @param <T>
  31  */
  32 public abstract class ImageDecoratorContributorImpl<T> implements Contributor<ImageDecoratorFactory> {
  33
  34     abstract public ImageDecorator getDecorator(ReadGraph graph, T input) throws DatabaseException;
  35
  36     final private Class<?> clazz;
  37
  38     @Override
  39     public Tester getNodeContextTester() {
  40         return null;
  41     }
  42
  43     public ImageDecoratorContributorImpl() {
  44         clazz = ReflectionUtils.getSingleParameterType(getClass());
  45     }
  46
  47     public ImageDecoratorContributorImpl(Class<?> clazz) {
  48         this.clazz = clazz;
  49     }
  50
  51     @Override
  52     public ImageDecoratorFactory getFactory() {
  53
  54         return new ImageDecoratorFactory() {
  55
  56             @Override
  57             public ImageDecorator create(final PrimitiveQueryUpdater updater, NodeContext context, ImageDecoratorKey key) {
  58
  59                 return new ImageDecoratorContributionImpl(updater, context, key) {
  60
  61                     @SuppressWarnings("unchecked")
  62                     @Override
  63                     public ImageDecorator getDecorator(ReadGraph graph, NodeContext context) throws DatabaseException {
  64
  65                         T input = (T)context.getConstant(BuiltinKeys.INPUT);
  66
  67                         return ImageDecoratorContributorImpl.this.getDecorator(graph, input);
  68
  69                     }
  70
  71                 };
  72
  73             }
  74
  75         };
  76
  77     }
  78
  79     @Override
  80     public Class<?> getInputClass() {
  81         return clazz;
  82     }
  83
  84 }