bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/DefaultImageDecoratorsProcessor.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.ArrayList;
  15 import java.util.Collection;
  16 import java.util.Collections;
  17
  18 import org.simantics.browsing.ui.BuiltinKeys;
  19 import org.simantics.browsing.ui.BuiltinKeys.ImageDecoratorKey;
  20 import org.simantics.browsing.ui.NodeContext;
  21 import org.simantics.browsing.ui.NodeContext.QueryKey;
  22 import org.simantics.browsing.ui.NodeQueryManager;
  23 import org.simantics.browsing.ui.common.processors.AbstractNodeQueryProcessor;
  24 import org.simantics.browsing.ui.content.ImageDecorator;
  25 import org.simantics.browsing.ui.content.ImageDecoratorFactory;
  26
  27 public class DefaultImageDecoratorsProcessor extends AbstractNodeQueryProcessor<Collection<ImageDecorator>> {
  28
  29     @Override
  30     public Collection<ImageDecorator> query(NodeQueryManager manager, NodeContext context) {
  31         Collection<ImageDecoratorFactory> factories = manager.query(context, BuiltinKeys.SELECTED_IMAGE_DECORATOR_FACTORIES);
  32         if (factories.isEmpty())
  33             return Collections.emptyList();
  34
  35         Collection<ImageDecorator> decorators = new ArrayList<ImageDecorator>(factories.size());
  36         for (ImageDecoratorFactory f : factories) {
  37             assert f != null;
  38             ImageDecorator decorator = manager.query(context, new ImageDecoratorKey(f));
  39             if (decorator != null)
  40                 decorators.add(decorator);
  41         }
  42
  43         return decorators;
  44     }
  45
  46     @Override
  47     public String toString() {
  48         return "ImageDecoratorsProcessor";
  49     }
  50
  51     @Override
  52     public QueryKey<Collection<ImageDecorator>> getIdentifier() {
  53         return BuiltinKeys.IMAGE_DECORATORS;
  54     }
  55
  56 }