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88 lines
3.0 KiB
Python
88 lines
3.0 KiB
Python
"""D-bus service providing access to the shell's functionality"""
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import dbus
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from sugar.activity import bundleregistry
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_DBUS_SERVICE = "org.laptop.Shell"
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_DBUS_INTERFACE = "org.laptop.Shell"
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_DBUS_OWNER_INTERFACE = "org.laptop.Shell.Owner"
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_DBUS_PATH = "/org/laptop/Shell"
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class ShellService(dbus.service.Object):
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"""Provides d-bus service to script the shell's operations
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Uses a shell_model object to observe events such as changes to:
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* nickname
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* colour
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* icon
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* currently active activity
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and pass the event off to the methods in the dbus signature.
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Key method here at the moment is add_bundle, which is used to
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do a run-time registration of a bundle using it's application path.
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XXX At the moment the d-bus service methods do not appear to do
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anything other than add_bundle
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"""
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def __init__(self, shell_model):
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self._shell_model = shell_model
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self._owner = self._shell_model.get_owner()
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self._owner.connect('nick-changed', self._owner_nick_changed_cb)
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self._owner.connect('icon-changed', self._owner_icon_changed_cb)
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self._owner.connect('color-changed', self._owner_color_changed_cb)
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self._home_model = self._shell_model.get_home()
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self._home_model.connect('active-activity-changed', self._cur_activity_changed_cb)
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bus = dbus.SessionBus()
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bus_name = dbus.service.BusName(_DBUS_SERVICE, bus=bus)
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dbus.service.Object.__init__(self, bus_name, _DBUS_PATH)
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@dbus.service.method(_DBUS_INTERFACE, in_signature="s", out_signature="b")
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def add_bundle(self, bundle_path):
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"""Register the activity bundle with the global registry
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bundle_path -- path to the activity bundle's root directory,
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that is, the directory with activity/activity.info as a
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child of the directory.
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The bundleregistry.BundleRegistry is responsible for setting
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up a set of d-bus service mappings for each available activity.
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"""
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registry = bundleregistry.get_registry()
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return registry.add_bundle(bundle_path)
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@dbus.service.signal(_DBUS_OWNER_INTERFACE, signature="s")
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def ColorChanged(self, color):
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pass
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def _owner_color_changed_cb(self, new_color):
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self.ColorChanged(new_color.to_string())
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@dbus.service.signal(_DBUS_OWNER_INTERFACE, signature="s")
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def NickChanged(self, nick):
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pass
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def _owner_nick_changed_cb(self, new_nick):
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self.NickChanged(new_nick)
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@dbus.service.signal(_DBUS_OWNER_INTERFACE, signature="ay")
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def IconChanged(self, icon_data):
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pass
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def _owner_icon_changed_cb(self, new_icon):
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self.IconChanged(dbus.ByteArray(new_icon))
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@dbus.service.signal(_DBUS_OWNER_INTERFACE, signature="s")
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def CurrentActivityChanged(self, activity_id):
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pass
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def _cur_activity_changed_cb(self, owner, new_activity):
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new_id = ""
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if new_activity:
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new_id = new_activity.get_activity_id()
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self.CurrentActivityChanged(new_id)
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