bundles/org.simantics.browsing.ui.graph.impl/src/org/simantics/browsing/ui/graph/impl/contribution/ImagerContributionImpl.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.graph.impl.contribution;\r
  13 \r
  14 import java.util.Map;\r
  15 \r
  16 import org.eclipse.jface.resource.ImageDescriptor;\r
  17 import org.simantics.browsing.ui.BuiltinKeys.ImagerKey;\r
  18 import org.simantics.browsing.ui.NodeContext;\r
  19 import org.simantics.browsing.ui.PrimitiveQueryUpdater;\r
  20 import org.simantics.db.AsyncReadGraph;\r
  21 import org.simantics.db.procedure.Listener;\r
  22 import org.simantics.db.procedure.Procedure;\r
  23 import org.simantics.utils.ui.ErrorLogger;\r
  24 \r
  25 /**\r
  26  * Implement {@link #children(AsyncReadGraph)} and {@link #hasChildren(AsyncReadGraph)}.\r
  27  * \r
  28  * @author Tuukka Lehtonen\r
  29  */\r
  30 @SuppressWarnings("unchecked")\r
  31 public abstract class ImagerContributionImpl extends FinalImagerContributionImpl {\r
  32 \r
  33     public ImagerContributionImpl(PrimitiveQueryUpdater updater,\r
  34             NodeContext context, ImagerKey key) {\r
  35         super(updater, context, key);\r
  36     }\r
  37 \r
  38     @Override\r
  39     protected Procedure<Map<String, ImageDescriptor>> createProcedure() {\r
  40 \r
  41         return new Listener<Map<String, ImageDescriptor>>() {\r
  42 \r
  43                 boolean executed = false;\r
  44                 boolean disposed = false;\r
  45 \r
  46             @Override\r
  47             public void execute(Map<String, ImageDescriptor> result) {\r
  48                 replaceResult(result);\r
  49                 executed = true;\r
  50             }\r
  51 \r
  52             @Override\r
  53             public boolean isDisposed() {\r
  54                 \r
  55                 if(disposed) return true;\r
  56                 \r
  57                 if((updater.isDisposed() || !updater.isShown(context)) && executed) {\r
  58                         content = null;\r
  59                         disposed = true;\r
  60                         return true;\r
  61                 } else {\r
  62                         return false;\r
  63                 }\r
  64                 \r
  65             }\r
  66 \r
  67             @Override\r
  68             public void exception(Throwable t) {\r
  69                 ErrorLogger.defaultLogError("ImagerContributionImpl.imagerQuery failed, see exception for details.", t);\r
  70             }\r
  71 \r
  72         };\r
  73 \r
  74     }\r
  75 \r
  76 }\r