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