// <label1>&<label2>&...  => p(label1),p(label2),...
 private ArrayList<Predicate> getPredicateListFromArc(String placeName, Arc arc)
     throws ParseException {
   if (!MIDParser.isIdentifier(placeName))
     throw new ParseException(
         placeName + " " + LocaleBundle.bundleString("should start with a letter"));
   String activeTokenClassID = CreateGui.getModel().getActiveTokenClassID();
   int pos = CreateGui.getModel().getPosInList(activeTokenClassID, arc.getWeight());
   if (pos >= 0) {
     String arcLabel = arc.getWeight().get(pos).getCurrentMarking().trim();
     ArrayList<Predicate> predicates = new ArrayList<Predicate>();
     try {
       ArrayList<ArrayList<String>> arcLabelList = MIDParser.parseArcLabelString(arcLabel);
       for (ArrayList<String> labelArguments : arcLabelList)
         predicates.add(new Predicate(placeName, labelArguments, arc instanceof InhibitorArc));
       return predicates;
     } catch (ParseException e) {
       throw new ParseException(
           LocaleBundle.bundleString("Arc label")
               + " "
               + arcLabel
               + " ("
               + arc.getSource().getName()
               + " , "
               + arc.getTarget().getName()
               + "). "
               + e.toString());
     }
   }
   return new ArrayList<Predicate>();
 }
 private void createModelPanel(File modelFile) {
   removeAll();
   mainNet =
       CreateGui.createPrTPanel(editor.kernel.getParentFrame(), modelFile, editor.isEditable);
   setLayout(new BorderLayout());
   add(mainNet, BorderLayout.CENTER);
 }
 private boolean isRESETArcLabel(Arc outputArc) {
   String activeTokenClassID = CreateGui.getModel().getActiveTokenClassID();
   int pos = CreateGui.getModel().getPosInList(activeTokenClassID, outputArc.getWeight());
   if (pos >= 0) {
     String arcLabel = outputArc.getWeight().get(pos).getCurrentMarking().trim();
     try {
       ArrayList<ArrayList<String>> arcLabelList = MIDParser.parseArcLabelString(arcLabel);
       if (arcLabelList.size() > 1) return false;
       ArrayList<String> labelArguments = arcLabelList.get(0);
       return labelArguments.size() == 1 && labelArguments.get(0).equalsIgnoreCase(MID.RESET);
     } catch (ParseException e) {
       return false;
     }
   }
   return false;
 }
 private void parseTokens(Marking marking, PipePlace place) throws ParseException {
   String activeTokenClassID = CreateGui.getModel().getActiveTokenClassID();
   DataLayerInterface net = mainNet.getModel();
   int pos = net.getPosInList(activeTokenClassID, place.getCurrentMarking());
   if (pos >= 0) {
     String tokenString = place.getCurrentMarking().get(pos).getCurrentMarking().trim();
     if (tokenString != null && !tokenString.equals("")) {
       ArrayList<Tuple> tokenList = new ArrayList<Tuple>();
       try {
         tokenList = MIDParser.parseTokenString(tokenString);
       } catch (ParseException e) {
         throw new ParseException(place.getName() + ": " + tokenString + ". " + e.toString());
       }
       if (tokenList.size() > 0) {
         // check arity consistency
         int firstArity = tokenList.get(0).arity();
         for (int index = 1; index < tokenList.size(); index++)
           if (tokenList.get(0).arity() != firstArity)
             throw new ParseException(
                 place.getName()
                     + " "
                     + LocaleBundle.bundleString("has inconsistent token length"));
         // check duplication
         checkDuplicateTokens(tokenList, place.getName(), tokenString);
       }
       marking.addTuples(place.getName(), tokenList);
     }
   }
 }
 /* (non-Javadoc)
  * @see java.awt.event.ActionListener#actionPerformed(java.awt.event.ActionEvent)
  */
 public void actionPerformed(ActionEvent e) {
   CreateGui.getView().getUndoManager().newEdit(); // new "transaction""
   CreateGui.getView().getUndoManager().deleteSelection(selected);
   selected.delete();
 }
 public void actionPerformed(ActionEvent arg0) {
   CreateGui.getView()
       .getUndoManager()
       .addNewEdit(selected.getArcPath().insertPointAt(mouseposition, ArcPathPoint.CURVED));
 }