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Use RuntimeEnvironmentRequest2 where applicable
[simantics/platform.git] / bundles / org.simantics.browsing.ui.swt / src / org / simantics / browsing / ui / swt / DefaultSelectedImagerProcessor.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.swt;
13
14 import java.util.Collection;
15
16 import org.eclipse.swt.graphics.Image;
17 import org.simantics.browsing.ui.BuiltinKeys;
18 import org.simantics.browsing.ui.NodeContext;
19 import org.simantics.browsing.ui.NodeContext.QueryKey;
20 import org.simantics.browsing.ui.NodeQueryManager;
21 import org.simantics.browsing.ui.common.imagers.ImageURLs;
22 import org.simantics.browsing.ui.common.processors.AbstractNodeQueryProcessor;
23 import org.simantics.browsing.ui.content.Imager;
24 import org.simantics.browsing.ui.content.ImagerFactory;
25
26 public class DefaultSelectedImagerProcessor extends AbstractNodeQueryProcessor<Imager> {
27
28     public DefaultSelectedImagerProcessor() {
29     }
30
31     @Override
32     public QueryKey<Imager> getIdentifier() {
33         return BuiltinKeys.SELECTED_IMAGER;
34     }
35
36     @Override
37     public Imager query(NodeQueryManager manager, NodeContext context) {
38
39         Collection<ImagerFactory> imagers = manager.query(context, BuiltinKeys.IMAGER_FACTORIES);
40         if (imagers.isEmpty()) {
41
42             Imager imager = (Imager) context.getAdapter(Imager.class);
43             if (imager != null)
44                 return imager;
45             ImageURLs urls = (ImageURLs) context.getAdapter(ImageURLs.class);
46             if (urls != null) {
47                 return new ImageURLsImager<Image>(urls);
48             } else {
49                 return new NullImager();
50             }
51         }
52
53         // TODO: use SelectedLabelerFactory query instead of this educated choice
54         ImagerFactory factory = imagers.iterator().next();
55
56         return manager.query(context, new BuiltinKeys.ImagerKey(factory));
57
58     }
59
60     @Override
61     public String toString() {
62         return "SelectedLabelerProcessor";
63     }
64
65 }