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

   1 package org.simantics.modeling.ui.actions;
   2
   3 import java.util.Collections;
   4 import java.util.List;
   5
   6 import org.eclipse.core.runtime.IProgressMonitor;
   7 import org.eclipse.ui.PlatformUI;
   8 import org.simantics.db.Resource;
   9 import org.simantics.db.WriteGraph;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.diagram.synchronization.runtime.DiagramSelectionUpdater;
  12 import org.simantics.g2d.canvas.ICanvasContext;
  13 import org.simantics.modeling.flags.MergeFlags;
  14 import org.slf4j.Logger;
  15 import org.slf4j.LoggerFactory;
  16
  17 /**
  18  * @author Hannu Niemist&ouml;
  19  * @author Tuukka Lehtonen
  20  */
  21 public class MergeFlagsHandler extends FlagOperationHandler {
  22
  23     private static final Logger LOGGER = LoggerFactory.getLogger(MergeFlagsHandler.class);
  24     protected void perform(IProgressMonitor monitor, WriteGraph graph, List<Resource> flags, ICanvasContext canvasContext) throws DatabaseException {
  25         monitor.beginTask(Messages.MergeFlagsHandler_MonitorMergeSelectedFlags, IProgressMonitor.UNKNOWN);
  26         performMerge(graph, flags, canvasContext);
  27     }
  28
  29     public static void performMerge(WriteGraph graph, List<Resource> flags, ICanvasContext canvasContext) throws DatabaseException {
  30         final String text = MergeFlags.validateForMerge(graph, flags);
  31         if(text != null) {
  32             LOGGER.error(text);
  33             PlatformUI.getWorkbench().getDisplay().asyncExec(new Runnable() {
  34                 @Override
  35                 public void run() {
  36                     PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage()
  37                     .getActiveEditor().getEditorSite().getActionBars().getStatusLineManager()
  38                     .setErrorMessage(text);
  39                 }
  40             });
  41         }
  42         else {
  43             String result = MergeFlags.merge(graph, flags);
  44             if(result != null && !result.isEmpty()) {
  45                 LOGGER.error(result); // Should not happen because of prevalidation
  46             } else {
  47                 if (canvasContext != null) {
  48                     // Make sure the diagram selection is set to the
  49                     // merged flag after the merge.
  50                     new DiagramSelectionUpdater( canvasContext )
  51                     .setNewSelection(0, Collections.singleton( flags.get(0) ))
  52                     .setOneshot(true)
  53                     .track();
  54                 }
  55             }
  56         }
  57     }
  58
  59 }