bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/DefaultLabelDecoratorsProcessor.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.eclipse.swt.SWT;\r
  19 import org.simantics.browsing.ui.BuiltinKeys;\r
  20 import org.simantics.browsing.ui.BuiltinKeys.LabelDecoratorKey;\r
  21 import org.simantics.browsing.ui.NodeContext;\r
  22 import org.simantics.browsing.ui.NodeContext.QueryKey;\r
  23 import org.simantics.browsing.ui.NodeQueryManager;\r
  24 import org.simantics.browsing.ui.common.processors.AbstractNodeQueryProcessor;\r
  25 import org.simantics.browsing.ui.content.LabelDecorator;\r
  26 import org.simantics.browsing.ui.content.LabelDecoratorFactory;\r
  27 \r
  28 public class DefaultLabelDecoratorsProcessor extends AbstractNodeQueryProcessor<Collection<LabelDecorator>> {\r
  29 \r
  30     @Override\r
  31     public Collection<LabelDecorator> query(NodeQueryManager manager, NodeContext context) {\r
  32         Collection<LabelDecoratorFactory> factories = manager.query(context, BuiltinKeys.SELECTED_LABEL_DECORATOR_FACTORIES);\r
  33         if (factories.isEmpty()) {\r
  34             LabelDecorator truncation = new TreeTruncationDecoratorFactory(SWT.BOLD).create(manager, context);\r
  35             if (truncation != null)\r
  36                 return Collections.singletonList(truncation);\r
  37             return Collections.emptyList();\r
  38         }\r
  39 \r
  40         Collection<LabelDecorator> decorators = new ArrayList<LabelDecorator>(factories.size() + 1);\r
  41         for (LabelDecoratorFactory f : factories) {\r
  42             assert f != null;\r
  43             LabelDecorator decorator = manager.query(context, new LabelDecoratorKey(f));\r
  44             if (decorator != null)\r
  45                 decorators.add(decorator);\r
  46         }\r
  47 \r
  48         LabelDecorator truncation = new TreeTruncationDecoratorFactory(SWT.BOLD).create(manager, context);\r
  49         if (truncation != null)\r
  50             decorators.add(truncation);\r
  51 \r
  52         return decorators;\r
  53     }\r
  54 \r
  55     @Override\r
  56     public String toString() {\r
  57         return "LabelDecoratorsProcessor";\r
  58     }\r
  59 \r
  60     @Override\r
  61     public QueryKey<Collection<LabelDecorator>> getIdentifier() {\r
  62         return BuiltinKeys.LABEL_DECORATORS;\r
  63     }\r
  64 \r
  65 }\r