1 files changed, 39 insertions, 0 deletions
diff --git a/tutorius/engine.py b/tutorius/engine.py
new file mode 100644
index 0000000..57c08e4
--- /dev/null
+++ b/tutorius/engine.py
@@ -0,0 +1,39 @@
+import dbus.mainloop.glib
+from sugar.tutorius.TProbe import ProbeProxy
+import sugar.tutorius.addon as addon
+
+class Engine:
+    """
+    Driver for the execution of tutorials
+    """
+
+    def __init__(self):
+        # FIXME Probe management should be in the probe manager
+        dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
+        self._probe = ProbeProxy("org.laptop.Calculate") 
+        self._bm = None
+
+    
+    def launch(self, tutorialID):
+	""" Launch a tutorial 
+            @param tutorialID unique tutorial identifier used to retrieve it from the disk
+        """
+        if self._bm == None:
+            self._bm = addon.create("BubbleMessage")
+        self._bm.position = (300,300)
+        self._bm.message = "Tutorial Started"
+
+        self._probe.install(self._bm)
+        
+
+    def stop(self):
+        """ Stop the current tutorial
+        """
+        self._probe.uninstall(self._bm)
+
+    def pause(self):
+        """ Interrupt the current tutorial and save its state in the journal
+        """
+        self._bm.message = "Tutorial State would be saved"
+        self._probe.update(self._bm)
+