Cleanup shell model/view separation

shell/view/Shell.py

@@ -13,10 +13,20 @@ from globalkeys import KeyGrabber
 import sugar
 
 class Shell(gobject.GObject):
+	__gsignals__ = {
+		'activity-opened':  (gobject.SIGNAL_RUN_FIRST,
+							 gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT])),
+		'activity-changed': (gobject.SIGNAL_RUN_FIRST,
+							 gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT])),
+		'activity-closed':  (gobject.SIGNAL_RUN_FIRST,
+							 gobject.TYPE_NONE, ([gobject.TYPE_PYOBJECT]))
+	}
+
 	def __init__(self, model):
 		gobject.GObject.__init__(self)
 
 		self._model = model
+		self._hosts = {}
 		self._screen = wnck.screen_get_default()
 		self._grid = Grid()
 
@@ -57,16 +67,33 @@ class Shell(gobject.GObject):
 
 	def __window_opened_cb(self, screen, window):
 		if window.get_window_type() == wnck.WINDOW_NORMAL:
-			self._model.add_activity(ActivityHost(self, window))
+			activity_host = ActivityHost(self, window)
+			self._hosts[activity_host.get_xid()] = activity_host
+			self.emit('activity-opened', activity_host)
 
 	def __active_window_changed_cb(self, screen):
 		window = screen.get_active_window()
-		if window and window.get_window_type() == wnck.WINDOW_NORMAL:
-			self._model.set_current_activity(window.get_xid())
+
+		if window == None:
+			self._model.set_current_activity(None)
+			self.emit('activity-changed', None)
+
+		if window.get_window_type() == wnck.WINDOW_NORMAL:
+			activity_host = self._hosts[window.get_xid()]
+
+			current = self._model.get_current_activity()
+			if activity_host.get_id() == current:
+				return
+
+			self._model.set_current_activity(activity_host.get_id())
+			self.emit('activity-changed', activity_host)
 
 	def __window_closed_cb(self, screen, window):
 		if window.get_window_type() == wnck.WINDOW_NORMAL:
-			self._model.remove_activity(window.get_xid())
+			if self._hosts.has_key(window.get_xid()):
+				host = self._hosts[window.get_xid()]
+				self.emit('activity-closed', host)
+				del self._hosts[window.get_xid()]
 
 	def get_model(self):
 		return self._model
@@ -100,3 +127,16 @@ class Shell(gobject.GObject):
 		else:
 			self._screen.toggle_showing_desktop(True)
 			self._home_window.set_zoom_level(level)
+
+	def get_current_activity(self):
+		activity_id = self._model.get_current_activity()
+		if activity_id:
+			return self._get_activity(activity_id)
+		else:
+			return None
+
+	def _get_activity(self, activity_id):
+		for host in self._hosts.values():
+			if host.get_id() == activity_id:
+				return host
+		return None

shell/view/frame/RightPanel.py

@@ -21,8 +21,7 @@ class RightPanel(CanvasBox):
 		self._pservice.connect('activity-appeared',
 							   self.__activity_appeared_cb)
 
-		shell.get_model().connect('activity-changed',
-								  self.__activity_changed_cb)
+		shell.connect('activity-changed', self.__activity_changed_cb)
 
 	def add(self, buddy):
 		icon = BuddyIcon(self._shell, BuddyInfo(buddy))
@@ -42,7 +41,7 @@ class RightPanel(CanvasBox):
 		self._buddies = {}
 
 	def __activity_appeared_cb(self, pservice, activity_ps):
-		activity = self._shell.get_model().get_current_activity()
+		activity = self._shell.get_current_activity()
 		if activity and activity_ps.get_id() == activity.get_id():
 			self._set_activity_ps(activity_ps)
 

shell/view/frame/TopPanel.py

@@ -37,8 +37,7 @@ class ActivityIcon(MenuIcon):
 
 	def _action_cb(self, menu, action):
 		if action == ActivityMenu.ACTION_SHARE:
-			shell_model = self._shell.get_model()
-			activity = shell_model.get_current_activity()
+			activity = shell.get_current_activity()
 			if activity != None:
 				activity.share()
 
@@ -77,9 +76,8 @@ class TopPanel(goocanvas.Group):
 
 		self._box = box
 
-		shell_model = shell.get_model()
-		shell_model.connect('activity-changed', self._activity_changed_cb)
-		self._set_current_activity(shell_model.get_current_activity())
+		shell.connect('activity-changed', self._activity_changed_cb)
+		self._set_current_activity(shell.get_current_activity())
 
 	def _set_current_activity(self, activity):
 		if self._activity_icon:

shell/view/home/HomeGroup.py

@@ -9,9 +9,8 @@ class TasksItem(DonutItem):
 
 		self._items = {}
 
-		shell_model = shell.get_model()
-		shell_model.connect('activity_opened', self.__activity_opened_cb)
-		shell_model.connect('activity_closed', self.__activity_closed_cb)
+		shell.connect('activity_opened', self.__activity_opened_cb)
+		shell.connect('activity_closed', self.__activity_closed_cb)
 
 	def __activity_opened_cb(self, model, activity):
 		self._add(activity)