145 lines
4.3 KiB
Python
145 lines
4.3 KiB
Python
import dbus
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import dbus.service
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import gtk
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import gobject
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from sugar.presence.PresenceService import PresenceService
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import sugar.util
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ACTIVITY_SERVICE_NAME = "org.laptop.Activity"
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ACTIVITY_SERVICE_PATH = "/org/laptop/Activity"
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ACTIVITY_INTERFACE = "org.laptop.Activity"
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class ActivityDbusService(dbus.service.Object):
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"""Base dbus service object that each Activity uses to export dbus methods.
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The dbus service is separate from the actual Activity object so that we can
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tightly control what stuff passes through the dbus python bindings."""
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def __init__(self, pservice, xid, activity):
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self._activity = activity
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self._pservice = pservice
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bus = dbus.SessionBus()
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service_name = ACTIVITY_SERVICE_NAME
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self._object_path = ACTIVITY_SERVICE_PATH + "/%s" % xid
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service = dbus.service.BusName(service_name, bus=bus)
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dbus.service.Object.__init__(self, service, self._object_path)
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def get_object_path(self):
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return self._object_path
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@dbus.service.method(ACTIVITY_INTERFACE)
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def share(self):
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"""Called by the shell to request the activity to share itself on the network."""
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self._activity.share()
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@dbus.service.method(ACTIVITY_INTERFACE)
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def join(self, activity_ps_path):
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"""Join the activity specified by its presence service path"""
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activity_ps = self._pservice.get(activity_ps_path)
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return self._activity.join(activity_ps)
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@dbus.service.method(ACTIVITY_INTERFACE)
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def get_id(self):
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"""Get the activity identifier"""
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return self._activity.get_id()
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@dbus.service.method(ACTIVITY_INTERFACE)
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def get_default_type(self):
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"""Get the activity default type"""
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return self._activity.get_default_type()
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@dbus.service.method(ACTIVITY_INTERFACE)
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def set_default_type(self, default_type):
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"""Set the activity default type"""
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self._activity.set_default_type(default_type)
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@dbus.service.method(ACTIVITY_INTERFACE)
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def get_shared(self):
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"""Returns True if the activity is shared on the mesh."""
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return self._activity.get_shared()
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@dbus.service.method(ACTIVITY_INTERFACE,
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in_signature="sao", out_signature="")
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def execute(self, command, args):
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self._activity.execute(command, args)
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class Activity(gtk.Window):
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"""Base Activity class that all other Activities derive from."""
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def __init__(self, service = None):
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gtk.Window.__init__(self)
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self._shared = False
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self._activity_id = None
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self._default_type = None
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self._pservice = PresenceService()
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self.present()
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group = gtk.Window()
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group.realize()
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self.window.set_group(group.window)
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self._bus = ActivityDbusService(self._pservice, self.window.xid, self)
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def __del__(self):
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if self._bus:
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del self._bus
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self._bus = None
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def get_object_path(self):
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"""Returns the path of the activity dbus service"""
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return self._bus.get_object_path()
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def set_default_type(self, default_type):
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"""Set the activity default type.
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It's the type of the main network service which tracks presence
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and provides info about the activity, for example the title."""
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self._default_type = default_type
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def get_default_type(self):
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"""Get the activity default type."""
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return self._default_type
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def get_shared(self):
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"""Returns TRUE if the activity is shared on the mesh."""
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return self._shared
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def get_id(self):
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"""Get the unique activity identifier."""
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if self._activity_id == None:
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self._activity_id = sugar.util.unique_id()
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return self._activity_id
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def join(self, activity_ps):
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"""Join an activity shared on the network."""
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self._shared = True
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self._activity_id = activity_ps.get_id()
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# Publish the default service, it's a copy of
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# one of those we found on the network.
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services = activity_ps.get_services_of_type(self._default_type)
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if len(services) > 0:
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service = services[0]
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addr = service.get_address()
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port = service.get_port()
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properties = { 'title' : service.get_published_value('title') }
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self._service = self._pservice.share_activity(self,
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self._default_type, properties, addr, port)
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else:
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logging.error('Cannot join the activity')
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def share(self):
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"""Share the activity on the network."""
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properties = { 'title' : self.get_title() }
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self._service = self._pservice.share_activity(self,
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self._default_type, properties)
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self._shared = True
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def execute(self, command, args):
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"""Execute the given command with args"""
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pass
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