bundles/org.simantics.browsing.ui.swt/src/org/simantics/browsing/ui/swt/PropertyLabelDecoratorFactory.java

   1 /*******************************************************************************\r
   2  *  Copyright (c) 2013 Association for Decentralized Information Management in\r
   3  *  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  *      Semantum Oy - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.browsing.ui.swt;\r
  13 \r
  14 import org.eclipse.jface.resource.ColorDescriptor;\r
  15 import org.eclipse.swt.graphics.RGB;\r
  16 import org.simantics.browsing.ui.BuiltinKeys;\r
  17 import org.simantics.browsing.ui.BuiltinKeys.LabelDecoratorKey;\r
  18 import org.simantics.browsing.ui.NodeContext;\r
  19 import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
  20 import org.simantics.browsing.ui.common.ColumnKeys;\r
  21 import org.simantics.browsing.ui.common.property.IArrayProperty;\r
  22 import org.simantics.browsing.ui.common.property.IProperty;\r
  23 import org.simantics.browsing.ui.content.LabelDecorator;\r
  24 import org.simantics.browsing.ui.content.LabelDecoratorFactory;\r
  25 import org.simantics.browsing.ui.graph.impl.contribution.LabelDecoratorContributionImpl;\r
  26 import org.simantics.databoard.Bindings;\r
  27 import org.simantics.db.ReadGraph;\r
  28 import org.simantics.db.Resource;\r
  29 import org.simantics.db.exception.DatabaseException;\r
  30 import org.simantics.layer0.Layer0;\r
  31 \r
  32 /**\r
  33  * @author Tuukka Lehtonen\r
  34  */\r
  35 public class PropertyLabelDecoratorFactory implements LabelDecoratorFactory {\r
  36 \r
  37         private final static ColorDescriptor READONLY_GRAY = ColorDescriptor.createFrom(new RGB(240, 240, 240));\r
  38 \r
  39         @Override\r
  40         public LabelDecorator create(PrimitiveQueryUpdater manager, NodeContext context, LabelDecoratorKey key) {\r
  41                 Object o = context.getConstant(BuiltinKeys.INPUT);\r
  42                 if (o instanceof IProperty) {\r
  43                         IProperty prop = (IProperty) o;\r
  44                         if (o instanceof IArrayProperty) {\r
  45                                 IArrayProperty array = (IArrayProperty) o;\r
  46                                 if (array.isSlice())\r
  47                                         // Prevent the decorator from overworking on each and every sliced table row.\r
  48                                         return null;\r
  49                         }\r
  50 \r
  51                         final Resource[] data = prop.getData(Resource[].class);\r
  52                         if (data == null)\r
  53                                 return null;\r
  54                         if (data.length != 3)\r
  55                                 return null;\r
  56 \r
  57                         return new PropertyReadOnlyLabelDecorator(manager, context, key);\r
  58                 }\r
  59                 return null;\r
  60         }\r
  61 \r
  62         static class PropertyReadOnlyLabelDecorator extends LabelDecoratorContributionImpl {\r
  63 \r
  64                 public PropertyReadOnlyLabelDecorator(PrimitiveQueryUpdater manager, NodeContext context, LabelDecoratorKey key) {\r
  65                         super(manager, context, key);\r
  66                 }\r
  67 \r
  68                 @Override\r
  69                 public LabelDecorator getDecorator(ReadGraph graph, NodeContext context) throws DatabaseException {\r
  70                         IProperty prop = (IProperty) context.getConstant(BuiltinKeys.INPUT);\r
  71                         final Resource[] data = prop.getData(Resource[].class);\r
  72                         Layer0 L0 = Layer0.getInstance(graph);\r
  73                         Object o = graph.getPossibleRelatedValue2(data[1], L0.readOnly, Bindings.BOOLEAN);\r
  74                         if (!Boolean.TRUE.equals(o))\r
  75                                 return null;\r
  76 \r
  77                         return new LabelDecorator.Stub() {\r
  78                                 @Override\r
  79                                 public <C> C decorateForeground(C color, String column, int itemIndex) {\r
  80                                         return null;\r
  81                                 }\r
  82                                 @SuppressWarnings("unchecked")\r
  83                                 @Override\r
  84                                 public <C> C decorateBackground(C color, String column, int itemIndex) {\r
  85                                         if (ColumnKeys.VALUE.equals(column))\r
  86                                                 return (C) READONLY_GRAY;\r
  87                                         return null;\r
  88                                 }\r
  89                         };\r
  90                 }\r
  91 \r
  92         }\r
  93 \r
  94 }\r