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-rw-r--r--tutorius/engine.py48
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diff --git a/tutorius/engine.py b/tutorius/engine.py
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+++ b/tutorius/engine.py
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+import logging
+import dbus.mainloop.glib
+from jarabe.model import shell
+
+from sugar.tutorius.bundler import TutorialStore
+from sugar.bundle.activitybundle import ActivityBundle
+
+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)
+ #FIXME shell.get_model() will only be useful in the shell process
+ self._shell = shell.get_model()
+ self._tutorial = None
+
+ def launch(self, tutorialID):
+ """ Launch a tutorial
+ @param tutorialID unique tutorial identifier used to retrieve it from the disk
+ """
+ if self._tutorial:
+ self._tutorial.detach()
+ self._tutorial = None
+
+ store = TutorialStore()
+
+ #Get the active activity from the shell
+ activity = self._shell.get_active_activity()
+ self._tutorial = store.load_tutorial(tutorialID, bundle_path=activity.get_bundle_path())
+
+ #TProbes automatically use the bundle id, available from the ActivityBundle
+ bundle = ActivityBundle(activity.get_bundle_path())
+ self._tutorial.attach(bundle.get_bundle_id())
+
+ def stop(self):
+ """ Stop the current tutorial
+ """
+ self._tutorial.detach()
+ self._tutorial = None
+
+ def pause(self):
+ """ Interrupt the current tutorial and save its state in the journal
+ """
+ raise NotImplementedError("Unable to store tutorial state")
+