Main bits of presence service refactor

sugar/presence/Buddy.py

@@ -0,0 +1,127 @@
+import pwd
+import os
+
+import pygtk
+pygtk.require('2.0')
+import gtk
+
+
+#from sugar import env
+
+PRESENCE_SERVICE_TYPE = "_presence_olpc._tcp"
+
+
+class Buddy(object):
+	"""Represents another person on the network and keeps track of the
+	activities and resources they make available for sharing."""
+	def __init__(self, service):
+		self._services = {}
+		self._nick_name = service.get_name()
+		self._address = service.get_address()
+		self._valid = False
+		self._icon = None
+		self.add_service(service)
+
+	def add_service(self, service):
+		"""Adds a new service to this buddy's service list."""
+		if service.get_type() in self._services.keys():
+			return
+		self._services.keys[service.get_type()] = service
+		# FIXME: send out signal for new service found
+		if service.get_type() == PRESENCE_SERVICE_TYPE:
+			# A buddy isn't valid until its official presence
+			# service has been found and resolved
+			self._valid = True
+
+	def remove_service(self, service):
+		"""Remove a service from a buddy; ie, the activity was closed
+		or the buddy went away."""
+		if service.get_type() in self._services.keys():
+			del self._services[service.get_type()]
+		if service.get_type() == PRESENCE_SERVICE_TYPE:
+			self._valid = False
+
+	def is_valid(self):
+		"""Return whether the buddy is valid or not.  A buddy is
+		not valid until its official presence service has been found
+		and successfully resolved."""
+		return self._valid
+
+	def get_icon_pixbuf(self):
+		if self._icon:
+			pbl = gtk.gdk.PixbufLoader()
+			pbl.write(self._icon)
+			pbl.close()
+			return pbl.get_pixbuf()
+		else:
+			return None
+
+	def get_icon(self):
+		"""Return the buddies icon, if any."""
+		return self._icon
+		
+	def get_address(self):
+		return self._address
+
+	def add_service(self, service):
+		if service.get_name() != self._nick_name:
+			return False
+		if service.get_address() != self._address:
+			return False
+		if self._services.has_key(service.get_type()):
+			return False
+		self._services[service.get_type()] = service
+
+	def remove_service(self, stype):
+		if self._services.has_key(stype):
+			del self._services[stype]
+
+	def get_service(self, stype):
+		if self._services.has_key(stype):
+			return self._services[stype]
+		return None
+		
+	def get_nick_name(self):
+		return self._nick_name
+
+	def set_icon(self, icon):
+		"""Can only set icon for other buddies.  The Owner
+		takes care of setting it's own icon."""
+		self._icon = icon
+		# FIXME: do callbacks for icon-changed
+		
+
+class Owner(Buddy):
+	"""Class representing the owner of this machine/instance."""
+	def __init__(self):
+		nick = env.get_nick_name()
+		if not nick:
+			nick = pwd.getpwuid(os.getuid())[0]
+		if not nick or not len(nick):
+			nick = "n00b"
+
+		Buddy.__init__(self)
+
+		user_dir = env.get_user_dir()
+		if not os.path.exists(user_dir):
+			try:
+				os.makedirs(user_dir)
+			except OSError:
+				print 'Could not create user directory.'
+
+		for fname in os.listdir(user_dir):
+			if not fname.startswith("buddy-icon."):
+				continue
+			fd = open(os.path.join(user_dir, fname), "r")
+			self._icon = fd.read()
+			fd.close()
+			break
+
+	def set_icon(self, icon):
+		"""Can only set icon in constructor for now."""
+		pass
+		
+	def add_service(self, service):
+		"""Do nothing here, since all services we need to know about
+		are registered with us by our group."""
+		pass