Start with interactive mode

ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controller/InteractiveModeController.java

+package edu.kit.iti.formal.psdbg.gui.controller;
+
+import com.google.common.eventbus.Subscribe;
+import de.uka.ilkd.key.logic.SequentFormula;
+import de.uka.ilkd.key.proof.Node;
+import edu.kit.iti.formal.psdbg.LabelFactory;
+import edu.kit.iti.formal.psdbg.parser.PrettyPrinter;
+import edu.kit.iti.formal.psdbg.parser.ast.*;
+import javafx.beans.property.BooleanProperty;
+import javafx.beans.property.SimpleBooleanProperty;
+import lombok.Getter;
+import lombok.Setter;
+import lombok.val;
+import org.apache.logging.log4j.LogManager;
+import org.apache.logging.log4j.Logger;
+
+import java.util.HashMap;
+import java.util.Map;
+
+@Getter
+@Setter
+public class InteractiveModeController {
+    private static final Logger LOGGER = LogManager.getLogger(InteractiveModeController.class);
+
+    private final Map<Node, Statements> cases = new HashMap<>();
+
+    private BooleanProperty activated = new SimpleBooleanProperty();
+
+
+    public InteractiveModeController() {
+    }
+
+    public void start() {
+        Events.register(this);
+        cases.clear();
+    }
+
+    public void stop() {
+        Events.unregister(this);
+        String c = getCasesAsString();
+        Events.fire(new Events.InsertAtTheEndOfMainScript(c));
+    }
+
+    @Subscribe
+    public void handle(Events.TacletApplicationEvent tap) {
+        LOGGER.debug("Handling {}", tap);
+        String tapName = tap.getApp().taclet().displayName();
+
+        SequentFormula seqForm = tap.getPio().sequentFormula();
+        //transform term to parsable string representation
+        String term = edu.kit.iti.formal.psdbg.termmatcher.Utils.toPrettyTerm(seqForm.formula());
+        Parameters params = new Parameters();
+        params.put(new Variable("formula"), new TermLiteral(term));
+        CallStatement call = new CallStatement(tapName, params);
+
+
+        // Insert into the right cases
+        Node currentNode = null;
+        cases.get(findRoot(currentNode)).add(call);
+
+        // How to Play this on the Proof?
+        // How to Build a new StatePointer? Is it still possible?
+        //  or only at #stop()?
+    }
+
+    private Node findRoot(Node cur) {
+        while (cur != null) {
+            if (cases.keySet().contains(cur))
+                return cur;
+            cur = cur.parent();
+        }
+        return null;
+    }
+
+    public String getCasesAsString() {
+        CasesStatement c = new CasesStatement();
+        cases.forEach((k, v) -> {
+            val gcs = new GuardedCaseStatement();
+            val m = new MatchExpression();
+            m.setPattern(new StringLiteral(
+                    LabelFactory.getBranchingLabel(k)
+            ));
+            gcs.setGuard(m);
+            gcs.setBody(v);
+        });
+
+        PrettyPrinter pp = new PrettyPrinter();
+        c.accept(pp);
+        return pp.toString();
+    }
+
+    public boolean isActivated() {
+        return activated.get();
+    }
+
+    public void setActivated(boolean activated) {
+        this.activated.set(activated);
+    }
+
+    public BooleanProperty activatedProperty() {
+        return activated;
+    }
+}

ui/src/main/java/edu/kit/iti/formal/psdbg/gui/controls/ScriptArea.java

@@ -436,38 +436,6 @@ public class ScriptArea extends CodeArea {
     }
 
 
-    @Subscribe
-    public void handle(Events.TacletApplicationEvent tap) {
-        LOGGER.debug("ScriptArea.handleTacletApplication");
-        String tapName = tap.getApp().taclet().displayName();
-
-        SequentFormula seqForm = tap.getPio().sequentFormula();
-        //transform term to parsable string representation
-        String term = edu.kit.iti.formal.psdbg.termmatcher.Utils.toPrettyTerm(seqForm.formula());
-
-
-        String text = getText();
-
-        //set new DebuggerCommand on position of execution marker
-        int posExecMarker = this.getExecutionMarkerPosition();
-        setText(text.substring(0, posExecMarker) + "\n" + tapName + " formula=`" + term + "`;\n" + text.substring(posExecMarker + 1));
-
-        LineMapping lm = new LineMapping(text);
-        int line = lm.getLine(getCaretPosition());
-        //System.out.println(line);
-
-        setDirty(true);
-
-        //create Call Statement
-        Parameters params = new Parameters();
-        params.put(new Variable("formula"), new TermLiteral(term));
-        CallStatement call = new CallStatement(tapName, params);
-        Events.fire(new Events.ScriptModificationEvent(posExecMarker, call));
-        Events.unregister(this);
-        //this.getMainScript().getScriptArea().insertText(this.getExecutionMarkerPosition(), tapName+" "+on+ ";");
-
-    }
-
     public CodePointCharStream getStream() {
         return CharStreams.fromString(getText(), getFilePath().getAbsolutePath());