PRocesses now get removed properly.

Removed all VSSimulation* classes.

5 files changed, 158 insertions, 59 deletions

diff --git a/sources/simulator/VSLogging.java b/sources/simulator/VSLogging.java
index 9ab9cec..c303bec 100644
--- a/sources/simulator/VSLogging.java
+++ b/sources/simulator/VSLogging.java
@@ -11,7 +11,7 @@ public class VSLogging {
     private String filterText;
     private ArrayList<StringBuffer> pauseLines;
     private ArrayList<StringBuffer> loggingLines;
-    private VSSimulationCanvas simulationCanvas;
+    private VSSimulatorCanvas simulationCanvas;
     private boolean isFiltered;
     private boolean isPaused;
     private Pattern filterPattern;
@@ -26,7 +26,7 @@ public class VSLogging {
         filterText = "";
     }
 
-    public void setSimulationCanvas(VSSimulationCanvas simulationCanvas) {
+    public void setSimulationCanvas(VSSimulatorCanvas simulationCanvas) {
         this.simulationCanvas = simulationCanvas;
     }
 
diff --git a/sources/simulator/VSMain.java b/sources/simulator/VSMain.java
index 926f450..7e6639e 100644
--- a/sources/simulator/VSMain.java
+++ b/sources/simulator/VSMain.java
@@ -19,7 +19,7 @@ public class VSMain {
 
     private void init(VSPrefs prefs, Component relativeTo) {
         VSSimulatorFrame simulatorFrame = new VSSimulatorFrame(prefs, relativeTo);
-        new VSEditorFrame(prefs, relativeTo, new VSSimulationEditor(prefs, simulatorFrame));
+        new VSEditorFrame(prefs, relativeTo, new VSSimulatorEditor(prefs, simulatorFrame));
     }
 
     public static void main(String[] args) {
diff --git a/sources/simulator/VSSimulation.java b/sources/simulator/VSSimulator.java
index 17400cb..097d198 100644
--- a/sources/simulator/VSSimulation.java
+++ b/sources/simulator/VSSimulator.java
@@ -17,7 +17,7 @@ import prefs.editors.*;
 import protocols.*;
 import utils.*;
 
-public class VSSimulation extends JPanel {
+public class VSSimulator extends JPanel {
     private ArrayList<String> globalTextFields;
     private ArrayList<String> localTextFields;
     private ArrayList<VSCreateTask> createTasks;
@@ -44,7 +44,7 @@ public class VSSimulation extends JPanel {
     private VSLogging logging;
     private VSMenuItemStates menuItemStates;
     private VSPrefs prefs;
-    private VSSimulationCanvas simulationCanvas;
+    private VSSimulatorCanvas simulationCanvas;
     private VSSimulatorFrame simulatorFrame;
     private VSTaskManager taskManager;
     private VSTaskManagerTableModel taskManagerGlobalModel;
@@ -100,7 +100,7 @@ public class VSSimulation extends JPanel {
         }
     }
 
-    public VSSimulation(VSPrefs prefs, VSSimulatorFrame simulatorFrame) {
+    public VSSimulator(VSPrefs prefs, VSSimulatorFrame simulatorFrame) {
         this.prefs = prefs;
         this.simulatorFrame = simulatorFrame;
         this.logging = new VSLogging();
@@ -141,7 +141,7 @@ public class VSSimulation extends JPanel {
         splitPaneH = new JSplitPane();
         splitPaneV = new JSplitPane();
 
-        simulationCanvas = new VSSimulationCanvas(prefs, this, logging);
+        simulationCanvas = new VSSimulatorCanvas(prefs, this, logging);
         taskManager = simulationCanvas.getTaskManager();
         logging.setSimulationCanvas(simulationCanvas);
 
@@ -863,11 +863,11 @@ public class VSSimulation extends JPanel {
         return simulationNum;
     }
 
-    public VSSimulation.VSMenuItemStates getMenuItemStates() {
+    public VSSimulator.VSMenuItemStates getMenuItemStates() {
         return menuItemStates;
     }
 
-    public VSSimulationCanvas getSimulationCanvas() {
+    public VSSimulatorCanvas getSimulationCanvas() {
         return simulationCanvas;
     }
 
@@ -881,12 +881,35 @@ public class VSSimulation extends JPanel {
     }
 
     public void removeProcessAtIndex(int index) {
+        if (lastSelectedProcessNum >= index)
+            --lastSelectedProcessNum;
+        if (lastSelectedProcessNum < 0)
+            lastSelectedProcessNum = 0;
+
+        globalTextFields.remove(index);
+        localTextFields.remove(index);
+
         globalPIDComboBox.removeItemAt(index);
         localPIDComboBox.removeItemAt(index);
+
         processesComboBox.removeItemAt(index);
         simulatorFrame.updateEditMenu();
     }
 
+    public void addProcessAtIndex(int index) {
+        int processID = simulationCanvas.getProcess(index).getProcessID();
+        String processString = prefs.getString("lang.process");
+
+        localTextFields.add(index, "0000");
+        globalTextFields.add(index, "0000");
+
+        localPIDComboBox.insertItemAt("PID: " + processID, index);
+        globalPIDComboBox.insertItemAt("PID: " + processID, index);
+
+        processesComboBox.insertItemAt(processString + " " + processID, index);
+        simulatorFrame.updateEditMenu();
+    }
+
     public void fireExpertModeChanged() {
         boolean expertMode = prefs.getBoolean("sim.mode.expert");
 
diff --git a/sources/simulator/VSSimulationCanvas.java b/sources/simulator/VSSimulatorCanvas.java
index 8444785..6e24270 100644
--- a/sources/simulator/VSSimulationCanvas.java
+++ b/sources/simulator/VSSimulatorCanvas.java
@@ -16,9 +16,9 @@ import prefs.*;
 import prefs.editors.*;
 import utils.*;
 
-public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionListener, MouseListener, HierarchyBoundsListener  {
+public class VSSimulatorCanvas extends Canvas implements Runnable, MouseMotionListener, MouseListener, HierarchyBoundsListener  {
     private VSProcess highlightedProcess;
-    private VSSimulation simulation;
+    private VSSimulator simulation;
     private VSPrefs prefs;
     private VSLogging logging;
     private volatile int numProcesses;
@@ -65,7 +65,9 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
     private Color messageArrivedColor;
     private Color messageSendingColor;
     private Color messageLostColor;
+    private Color backgroundColor;
 
+    private long messageLineCounter;
     private class VSMessageLine {
         private VSProcess receiverProcess;
         private Color color;
@@ -85,8 +87,10 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
         private double y;
         private long outageTime;
         private long z;
+        private long messageLineNum;
+        private VSTask task;
 
-        public VSMessageLine(VSProcess receiverProcess, long sendTime, long recvTime, long outageTime, int senderNum , int receiverNum) {
+        public VSMessageLine(VSProcess receiverProcess, long sendTime, long recvTime, long outageTime, int senderNum , int receiverNum, VSTask task) {
             this.receiverProcess = receiverProcess;
             this.sendTime = sendTime;
             this.recvTime = recvTime;
@@ -95,6 +99,8 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
             this.receiverNum = receiverNum;
             this.isArrived = false;
             this.isLost = false;
+            this.messageLineNum = ++messageLineCounter;
+            this.task = task;
 
             if (senderNum > receiverNum) {
                 //offset1 = 1;
@@ -106,7 +112,7 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
 
             /* Needed if the message gets lost after 0ms */
             this.x = getTimeXPosition(sendTime);
-            this.y = getProcessYPosition(senderNum) + offset1;
+            this.y = getProcessYPosition(senderNum+1) + offset1;
 
             recalcOnChange();
             paint();
@@ -114,9 +120,9 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
 
         public void recalcOnChange() {
             x1 = getTimeXPosition(sendTime);
-            y1 = getProcessYPosition(senderNum) + offset1;
+            y1 = getProcessYPosition(senderNum+1) + offset1;
             x2 = getTimeXPosition(recvTime);
-            y2 = getProcessYPosition(receiverNum) + offset2;
+            y2 = getProcessYPosition(receiverNum+1) + offset2;
 
             if (isLost) {
                 x = getTimeXPosition(z);
@@ -154,9 +160,36 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
                 g.drawLine((int) x1, (int) y1, (int) x, (int) y);
             }
         }
+
+        public boolean removeProcessAtIndex(int index) {
+            if (index == receiverNum || index == senderNum)
+                return true;
+
+            if (index < receiverNum)
+                --receiverNum;
+
+            if (index < senderNum)
+                --senderNum;
+
+            recalcOnChange();
+
+            return false;
+        }
+
+        public long getMessageLineNum() {
+            return messageLineNum;
+        }
+
+        public boolean equals(VSMessageLine line) {
+            return messageLineNum == line.getMessageLineNum();
+        }
+
+        public VSTask getTask() {
+            return task;
+        }
     }
 
-    public VSSimulationCanvas(VSPrefs prefs, VSSimulation simulation, VSLogging logging) {
+    public VSSimulatorCanvas(VSPrefs prefs, VSSimulator simulation, VSLogging logging) {
         this.prefs = prefs;
         this.simulation = simulation;
         this.logging = logging;
@@ -169,7 +202,7 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
 
         VSProcess.resetProcessCounter();
         for (int i = 0; i < numProcesses; ++i)
-            addProcess();
+            processes.add(createProcess(i));
 
         addMouseListener(this);
         addMouseMotionListener(this);
@@ -199,6 +232,7 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
         messageArrivedColor = prefs.getColor("col.message.arrived");
         messageSendingColor = prefs.getColor("col.message.sending");
         messageLostColor = prefs.getColor("col.message.lost");
+        backgroundColor = prefs.getColor("col.background");
 
         paintSize = simulation.getPaintSize();
         xPaintSize = simulation.getWidth() - (3 * XOFFSET + simulation.getSplitSize());
@@ -235,21 +269,13 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
         if (strategy != null) {
             synchronized (strategy) {
                 g = (Graphics2D) strategy.getDrawGraphics();
-                g.setColor(Color.WHITE);
+                g.setColor(backgroundColor);
                 if (isAntiAliased)
                     g.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
             }
         }
     }
 
-    public VSProcess addProcess() {
-        VSProcess process = new VSProcess(prefs, this, logging);
-        processes.add(process);
-        logging.logg(prefs.getString("lang.process.new") + "; " + process);
-
-        return process;
-    }
-
     private void updateSimulation(final long globalTime, final long lastGlobalTime) {
         if (isPaused || isFinished)
             return;
@@ -285,7 +311,7 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
 
             if (strategy != null) {
                 g = (Graphics2D) strategy.getDrawGraphics();
-                g.setColor(Color.WHITE);
+                g.setColor(backgroundColor);
             }
         }
 
@@ -311,7 +337,7 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
                     line.draw(g, globalTime);
             }
 
-            g.setColor(Color.WHITE);
+            g.setColor(backgroundColor);
 
             strategy.show();
         }
@@ -696,8 +722,8 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
                     synchronized (messageLines) {
                         messageLines.add(
                             new VSMessageLine(receiverProcess, sendingProcess.getGlobalTime(),
-                                              deliverTime, outageTime, sendingProcess.getProcessID(),
-                                              receiverProcess.getProcessID()));
+                                              deliverTime, outageTime, sendingProcess.getProcessNum(),
+                                              receiverProcess.getProcessNum(), task));
                     }
                 }
             }
@@ -707,9 +733,6 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
     public void mouseClicked(MouseEvent me) {
         final VSProcess process = getProcessAtYPos(me.getY());
 
-        if (process == null)
-            return;
-
         if (SwingUtilities.isRightMouseButton(me)) {
             ActionListener actionListener = new ActionListener() {
                 public void actionPerformed(ActionEvent ae) {
@@ -719,16 +742,17 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
 
                     } else if (actionCommand.equals(prefs.getString("lang.process.crash"))) {
                         VSEvent event = new ProcessCrashEvent();
-                        //event.init(process);
                         taskManager.addTask(new VSTask(process.getGlobalTime(), process, event, VSTask.GLOBAL));
 
                     } else if (actionCommand.equals(prefs.getString("lang.process.recover"))) {
                         VSEvent event = new ProcessRecoverEvent();
-                        //event.init(process);
                         taskManager.addTask(new VSTask(process.getGlobalTime(), process, event, VSTask.GLOBAL));
 
                     } else if (actionCommand.equals(prefs.getString("lang.process.remove"))) {
                         removeProcess(process);
+
+                    } else if (actionCommand.equals(prefs.getString("lang.process.add.new"))) {
+                        addProcess();
                     }
                 }
             };
@@ -736,29 +760,40 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
 
             JPopupMenu popup = new JPopupMenu();
             JMenuItem item = new JMenuItem(prefs.getString("lang.process.edit"));
-            item.addActionListener(actionListener);
+            if (process == null)
+                item.setEnabled(false);
+            else
+                item.addActionListener(actionListener);
             popup.add(item);
 
             item = new JMenuItem(prefs.getString("lang.process.crash"));
-            if (process.isCrashed() || isPaused || time == 0 || isFinished)
+            if (process == null || process.isCrashed() || isPaused || time == 0 || isFinished)
                 item.setEnabled(false);
             else
                 item.addActionListener(actionListener);
             popup.add(item);
 
             item = new JMenuItem(prefs.getString("lang.process.recover"));
-            if (!process.isCrashed() || isPaused || time == 0 || isFinished)
+            if (process == null || !process.isCrashed() || isPaused || time == 0 || isFinished)
                 item.setEnabled(false);
             else
                 item.addActionListener(actionListener);
             popup.add(item);
 
             item = new JMenuItem(prefs.getString("lang.process.remove"));
-            item.addActionListener(actionListener);
+            if (process == null)
+                item.setEnabled(false);
+            else
+                item.addActionListener(actionListener);
             popup.add(item);
 
             popup.addSeparator();
 
+            item = new JMenuItem(prefs.getString("lang.process.add.new"));
+            item.addActionListener(actionListener);
+            popup.add(item);
+
+
             popup.show(me.getComponent(), me.getX(), me.getY());
 
         } else {
@@ -860,16 +895,55 @@ public class VSSimulationCanvas extends Canvas implements Runnable, MouseMotionL
         recalcOnChange();
     }
 
-    public void removeProcess(VSProcess process) {
+    private void removeProcess(VSProcess process) {
         if (numProcesses == 1) {
             simulation.getSimulatorFrame().removeSimulation(simulation);
 
         } else {
             int index = processes.indexOf(process);
             processes.remove(index);
+            synchronized (processes) {
+                for (VSProcess p : processes) {
+                    p.removeProcessAtIndex(index);
+                }
+            }
             numProcesses = processes.size();
-            recalcOnChange();
             simulation.removeProcessAtIndex(index);
+            recalcOnChange();
+
+            ArrayList<VSMessageLine> removeThose = new ArrayList<VSMessageLine>();
+            synchronized (messageLines) {
+                for (VSMessageLine line : messageLines)
+                    if (line.removeProcessAtIndex(index))
+                        removeThose.add(line);
+                for (VSMessageLine line : removeThose) {
+                    VSTask deliverTask = line.getTask();
+                    if (deliverTask != null)
+                        taskManager.removeTask(deliverTask);
+                    messageLines.remove(line);
+                }
+            }
+
+            taskManager.removeTasksOf(process);
         }
     }
+
+    private VSProcess createProcess(int processNum) {
+        VSProcess process = new VSProcess(prefs, processNum, this, logging);
+        logging.logg(prefs.getString("lang.process.new") + "; " + process);
+        return process;
+    }
+
+    private void addProcess() {
+        numProcesses = processes.size() + 1;
+        VSProcess newProcess = createProcess(processes.size());
+        processes.add(newProcess);
+        synchronized (processes) {
+            for (VSProcess process : processes)
+                if (!process.equals(newProcess))
+                    process.addedAProcess();
+        }
+        recalcOnChange();
+        simulation.addProcessAtIndex(processes.size()-1);
+    }
 }
diff --git a/sources/simulator/VSSimulatorFrame.java b/sources/simulator/VSSimulatorFrame.java
index c4abdb3..e4e0d18 100644
--- a/sources/simulator/VSSimulatorFrame.java
+++ b/sources/simulator/VSSimulatorFrame.java
@@ -30,15 +30,15 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
     private JMenu menuSimulation;
     private JToolBar toolBar;
     private VSPrefs prefs;
-    private Vector<VSSimulation> simulations;
-    private VSSimulation currentSimulation;
+    private Vector<VSSimulator> simulations;
+    private VSSimulator currentSimulation;
     private JTabbedPane tabbedPane;
     //private JSlider speedSlider;
 
     public VSSimulatorFrame(VSPrefs prefs, Component relativeTo) {
         super(prefs.getString("lang.name"), relativeTo);
         this.prefs = prefs;
-        this.simulations = new Vector<VSSimulation>();
+        this.simulations = new Vector<VSSimulator>();
 
         setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
 
@@ -172,7 +172,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
         tabbedPane.addChangeListener(new ChangeListener() {
             public void stateChanged(ChangeEvent ce) {
                 JTabbedPane pane = (JTabbedPane) ce.getSource();
-                currentSimulation = (VSSimulation) pane.getSelectedComponent();
+                currentSimulation = (VSSimulator) pane.getSelectedComponent();
                 currentSimulation.getSimulationCanvas().paint();
                 updateEditMenu();
                 updateSimulationMenu();
@@ -192,13 +192,14 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
         globalPrefsItem.addActionListener(new ActionListener() {
             public void actionPerformed(ActionEvent ae) {
                 VSPrefs simulationPrefs = currentSimulation.getPrefs();
-                VSSimulationEditor.TAKEOVER_BUTTON = true;
-                VSSimulationEditor simulationEditor = new VSSimulationEditor(
+                VSSimulatorEditor.TAKEOVER_BUTTON = true;
+                VSSimulatorEditor simulationEditor = new VSSimulatorEditor(
                     simulationPrefs, VSSimulatorFrame.this, currentSimulation);
                 new VSEditorFrame(prefs, VSSimulatorFrame.this, simulationEditor);
             }
         });
         menuEdit.add(globalPrefsItem);
+        menuEdit.addSeparator();
 
         if (currentSimulation == null)
             return;
@@ -211,8 +212,9 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
         for (VSProcess process : arr) {
             int processID = process.getProcessID();
             JMenuItem processItem = new JMenuItem(processString + " " + processID);
-            processItem.setAccelerator(KeyStroke.getKeyStroke(0x31+processID,
-                                       ActionEvent.ALT_MASK));
+            if (processNum < 10)
+                processItem.setAccelerator(KeyStroke.getKeyStroke(0x31+processNum,
+                                           ActionEvent.ALT_MASK));
             final int finalProcessNum = processNum++;
             processItem.addActionListener(new ActionListener() {
                 public void actionPerformed(ActionEvent ae) {
@@ -225,7 +227,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
 
     /* updateSimulationMenu can be called from concurrent threads */
     public synchronized void updateSimulationMenu() {
-        VSSimulation.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
+        VSSimulator.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
 
         pauseItem.setEnabled(menuItemState.getPause());
         replayItem.setEnabled(menuItemState.getReplay());
@@ -240,7 +242,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
 
     public void dispose() {
         synchronized (simulations) {
-            for (VSSimulation simulation : simulations)
+            for (VSSimulator simulation : simulations)
                 simulation.getSimulationCanvas().stopThread();
         }
         super.dispose();
@@ -260,7 +262,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
 
         } else if (sourceText.equals(prefs.getString("lang.simulation.new"))) {
             VSPrefs newPrefs = VSDefaultPrefs.init();
-            new VSEditorFrame(newPrefs, this, new VSSimulationEditor(newPrefs, this));
+            new VSEditorFrame(newPrefs, this, new VSSimulatorEditor(newPrefs, this));
 
         } else if (sourceText.equals(prefs.getString("lang.window.new"))) {
             new VSMain(VSDefaultPrefs.init(), this);
@@ -275,7 +277,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
             System.exit(0);
 
         } else if (sourceText.equals(prefs.getString("lang.start"))) {
-            VSSimulation.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
+            VSSimulator.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
             menuItemState.setStart(false);
             menuItemState.setPause(true);
             menuItemState.setReset(false);
@@ -284,7 +286,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
             updateSimulationMenu();
 
         } else if (sourceText.equals(prefs.getString("lang.pause"))) {
-            VSSimulation.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
+            VSSimulator.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
             menuItemState.setStart(true);
             menuItemState.setPause(false);
             menuItemState.setReset(true);
@@ -293,7 +295,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
             updateSimulationMenu();
 
         } else if (sourceText.equals(prefs.getString("lang.reset"))) {
-            VSSimulation.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
+            VSSimulator.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
             menuItemState.setStart(true);
             menuItemState.setPause(false);
             menuItemState.setReset(false);
@@ -302,7 +304,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
             updateSimulationMenu();
 
         } else if (sourceText.equals(prefs.getString("lang.replay"))) {
-            VSSimulation.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
+            VSSimulator.VSMenuItemStates menuItemState = currentSimulation.getMenuItemStates();
             menuItemState.setStart(false);
             menuItemState.setPause(true);
             menuItemState.setReset(false);
@@ -313,7 +315,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
         }
     }
 
-    public void addSimulation(VSSimulation simulation) {
+    public void addSimulation(VSSimulator simulation) {
         simulation.setLayout(new GridLayout(1, 1, 3, 3));
         simulation.setMinimumSize(new Dimension(0, 0));
         simulation.setMaximumSize(new Dimension(0, 0));
@@ -330,7 +332,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
         }
     }
 
-    public void removeSimulation(VSSimulation simulationToRemove) {
+    public void removeSimulation(VSSimulator simulationToRemove) {
         if (simulations.size() == 1) {
             dispose();
 
@@ -345,7 +347,7 @@ public class VSSimulatorFrame extends VSFrame implements ActionListener {
         removeSimulation(currentSimulation);
     }
 
-    public VSSimulation getCurrentSimulation() {
+    public VSSimulator getCurrentSimulation() {
         return currentSimulation;
     }