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

   1 /*******************************************************************************\r
   2  * Copyright (c) 2010 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.widgets;\r
  13 \r
  14 import org.eclipse.jface.viewers.ISelection;\r
  15 import org.eclipse.jface.viewers.IStructuredSelection;\r
  16 import org.eclipse.swt.SWT;\r
  17 import org.eclipse.swt.widgets.Button;\r
  18 import org.eclipse.swt.widgets.Composite;\r
  19 import org.simantics.browsing.ui.swt.widgets.impl.SelectionListenerImpl;\r
  20 import org.simantics.browsing.ui.swt.widgets.impl.Widget;\r
  21 import org.simantics.browsing.ui.swt.widgets.impl.WidgetSupport;\r
  22 import org.simantics.db.ReadGraph;\r
  23 import org.simantics.db.Resource;\r
  24 import org.simantics.db.WriteGraph;\r
  25 import org.simantics.db.common.request.ReadRequest;\r
  26 import org.simantics.db.exception.DatabaseException;\r
  27 import org.simantics.db.management.ISessionContext;\r
  28 import org.simantics.sysdyn.SysdynResource;\r
  29 import org.simantics.utils.ui.ISelectionUtils;\r
  30 \r
  31 public class IsOutputWidget implements Widget{\r
  32     \r
  33     Resource variable = null; \r
  34     org.simantics.browsing.ui.swt.widgets.Button isOutputButton;\r
  35     \r
  36     public IsOutputWidget(Composite parent, WidgetSupport support, int style) {\r
  37         support.register(this);\r
  38         isOutputButton = new org.simantics.browsing.ui.swt.widgets.Button(parent, support, style |= SWT.CHECK);\r
  39         isOutputButton.setText("Is Output");\r
  40     }\r
  41 \r
  42     @Override\r
  43     public void setInput(ISessionContext context, Object input) {\r
  44         if(input instanceof ISelection) {\r
  45             ISelection selection = (ISelection)input;\r
  46             if(selection instanceof IStructuredSelection) {\r
  47                 Resource resource = ISelectionUtils.filterSingleSelection(selection, Resource.class);\r
  48                 if(resource != null) {\r
  49                     variable = resource;\r
  50                 }\r
  51             }\r
  52         }\r
  53         \r
  54         if(variable == null) return;\r
  55         \r
  56         try {\r
  57             context.getSession().syncRequest(new ReadRequest() {\r
  58                 \r
  59                 @Override\r
  60                 public void run(ReadGraph graph) throws DatabaseException {\r
  61                     SysdynResource sr = SysdynResource.getInstance(graph);\r
  62                     final boolean isOutput = graph.hasStatement(variable, sr.IsOutput);\r
  63                     final Button button = getWidget();\r
  64                     button.getDisplay().asyncExec(new Runnable() {\r
  65                         \r
  66                         @Override\r
  67                         public void run() {\r
  68                             if(button.isDisposed()) return;\r
  69                             \r
  70                             if(isOutput)\r
  71                                 button.setSelection(true);\r
  72                             else\r
  73                                 button.setSelection(false);\r
  74                         }\r
  75                     });\r
  76 \r
  77                         \r
  78                 }\r
  79             });\r
  80         } catch (DatabaseException e) {\r
  81             e.printStackTrace();\r
  82         }\r
  83         \r
  84         isOutputButton.addSelectionListener(new SelectionListenerImpl<Resource>(context) {\r
  85 \r
  86             @Override\r
  87             public void apply(WriteGraph graph, Resource input) throws DatabaseException {\r
  88                 SysdynResource sr =  SysdynResource.getInstance(graph);\r
  89                 if(graph.hasStatement(input, sr.IsOutput)) {\r
  90                     graph.deny(input, sr.IsOutput);\r
  91                 } else {\r
  92                     graph.claim(input, SysdynResource.getInstance(graph).IsOutput, null, input);\r
  93                 }\r
  94             }\r
  95         });\r
  96     }\r
  97     \r
  98     public Button getWidget() {\r
  99         return isOutputButton.getWidget();\r
 100     }\r
 101 \r
 102 }\r