gerrit.simantics Code Review - simantics/sysdyn.git/blob

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007, 2011 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  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  11  *******************************************************************************/\r
  12 package org.simantics.sysdyn.ui.properties;\r
  13 \r
  14 import org.eclipse.jface.viewers.ISelection;\r
  15 import org.eclipse.swt.events.DisposeEvent;\r
  16 import org.eclipse.swt.events.DisposeListener;\r
  17 import org.eclipse.swt.widgets.Composite;\r
  18 import org.eclipse.ui.IWorkbenchSite;\r
  19 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupportImpl;\r
  20 import org.simantics.db.AsyncReadGraph;\r
  21 import org.simantics.db.ReadGraph;\r
  22 import org.simantics.db.Resource;\r
  23 import org.simantics.db.exception.DatabaseException;\r
  24 import org.simantics.db.management.ISessionContext;\r
  25 import org.simantics.db.procedure.AsyncListener;\r
  26 import org.simantics.db.request.Read;\r
  27 import org.simantics.layer0.Layer0;\r
  28 import org.simantics.modeling.ModelingResources;\r
  29 import org.simantics.selectionview.PropertyTabContributorImpl;\r
  30 import org.simantics.ui.SimanticsUI;\r
  31 import org.simantics.ui.utils.AdaptionUtils;\r
  32 import org.simantics.utils.datastructures.Callback;\r
  33 \r
  34 public abstract class LabelPropertyTabContributor extends PropertyTabContributorImpl {\r
  35 \r
  36     private boolean isDisposed = false;\r
  37 \r
  38 \r
  39     public void createControl(Composite parent, final IWorkbenchSite site, final ISessionContext context, final WidgetSupportImpl support) {\r
  40         super.createControl(parent, site, context, support);\r
  41 \r
  42         // Add dispose listener to make sure name listening receives the correct isDisposed -value\r
  43         parent.addDisposeListener(new DisposeListener() {\r
  44 \r
  45             @Override\r
  46             public void widgetDisposed(DisposeEvent e) {\r
  47                 LabelPropertyTabContributor.this.dispose();\r
  48             }\r
  49         });\r
  50     }\r
  51 \r
  52     @Override\r
  53     public void updatePartName(ISelection forSelection, final Callback<String> updateCallback) {\r
  54         final Resource resource = AdaptionUtils.adaptToSingle(forSelection, Resource.class);\r
  55         if(resource == null) {\r
  56             updateCallback.run("Selection properties");\r
  57             return;\r
  58         }\r
  59 \r
  60         SimanticsUI.getSession().asyncRequest(new Read<String>() {\r
  61 \r
  62             @Override\r
  63             public String perform(ReadGraph graph) throws DatabaseException {\r
  64                 Layer0 l0 = Layer0.getInstance(graph);\r
  65                 ModelingResources mr = ModelingResources.getInstance(graph);\r
  66                 Resource r = resource;\r
  67                 if(graph.hasStatement(r, mr.ElementToComponent)) {\r
  68                     r = graph.getSingleObject(r, mr.ElementToComponent);\r
  69                 }\r
  70                 String label = graph.getPossibleRelatedValue(r, l0.HasLabel);\r
  71                 if(label != null)\r
  72                     return label;\r
  73                 label = graph.getPossibleRelatedValue(r, l0.HasName);\r
  74                 if(label != null)\r
  75                     return label;\r
  76                 return "No name for selection";\r
  77             }\r
  78         }, new AsyncListener<String>() {\r
  79 \r
  80             @Override\r
  81             public void execute(AsyncReadGraph graph, String result) {\r
  82                 updateCallback.run(result);\r
  83             }\r
  84 \r
  85             @Override\r
  86             public void exception(AsyncReadGraph graph, Throwable throwable) {\r
  87 \r
  88             }\r
  89 \r
  90             @Override\r
  91             public boolean isDisposed() {\r
  92                 return isDisposed;\r
  93             }\r
  94         });\r
  95     }\r
  96 \r
  97     @Override\r
  98     protected void dispose() {\r
  99         this.isDisposed = true;\r
 100     }\r
 101 }\r