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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)
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