bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/actions/MergeFlagsHandler.java

   1 package org.simantics.modeling.ui.actions;\r
   2 \r
   3 import java.util.Collections;\r
   4 import java.util.List;\r
   5 \r
   6 import org.eclipse.core.runtime.IProgressMonitor;\r
   7 import org.eclipse.ui.PlatformUI;\r
   8 import org.simantics.db.Resource;\r
   9 import org.simantics.db.WriteGraph;\r
  10 import org.simantics.db.exception.DatabaseException;\r
  11 import org.simantics.diagram.synchronization.runtime.DiagramSelectionUpdater;\r
  12 import org.simantics.g2d.canvas.ICanvasContext;\r
  13 import org.simantics.modeling.flags.MergeFlags;\r
  14 \r
  15 /**\r
  16  * @author Hannu Niemist&ouml;\r
  17  * @author Tuukka Lehtonen\r
  18  */\r
  19 public class MergeFlagsHandler extends FlagOperationHandler {\r
  20 \r
  21     protected void perform(IProgressMonitor monitor, WriteGraph graph, List<Resource> flags, ICanvasContext canvasContext) throws DatabaseException {\r
  22         monitor.beginTask("Merge Selected Flags", IProgressMonitor.UNKNOWN);\r
  23         performMerge(graph, flags, canvasContext);\r
  24     }\r
  25 \r
  26     public static void performMerge(WriteGraph graph, List<Resource> flags, ICanvasContext canvasContext) throws DatabaseException {\r
  27         final String text = MergeFlags.validateForMerge(graph, flags);\r
  28         if(text != null) {\r
  29             System.err.println(text);\r
  30             PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {\r
  31                 @Override\r
  32                 public void run() {\r
  33                     PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage()\r
  34                     .getActiveEditor().getEditorSite().getActionBars().getStatusLineManager()\r
  35                     .setErrorMessage(text);\r
  36                 }\r
  37             });\r
  38         }\r
  39         else {\r
  40             String result = MergeFlags.merge(graph, flags);\r
  41             if(result != null && !result.isEmpty()) {\r
  42                 System.err.println(result); // Should not happen because of prevalidation\r
  43             } else {\r
  44                 if (canvasContext != null) {\r
  45                     // Make sure the diagram selection is set to the\r
  46                     // merged flag after the merge.\r
  47                     new DiagramSelectionUpdater( canvasContext )\r
  48                     .setNewSelection(0, Collections.singleton( flags.get(0) ))\r
  49                     .setOneshot(true)\r
  50                     .track();\r
  51                 }\r
  52             }\r
  53         }\r
  54     }\r
  55 \r
  56 }\r