Implement popup menu for friends

shell/home/FriendsGroup.py

@@ -5,6 +5,8 @@ import goocanvas
 from sugar.canvas.IconItem import IconItem
 from home.IconLayout import IconLayout
 from home.MyIcon import MyIcon
+from BuddyPopup import BuddyPopup
+from sugar.canvas.Grid import Grid
 
 class FriendIcon(IconItem):
 	def __init__(self, friend):
@@ -31,19 +33,45 @@ class FriendsGroup(goocanvas.Group):
 		for friend in self._friends:
 			self.add_friend(friend)
 
-		friends.connect('friend-added', self.__friend_added_cb)
-
-	def __friend_clicked_cb(self, icon):
-		activity = self._shell.get_current_activity()
-		buddy = icon.get_friend().get_buddy()
-		if buddy != None:
-			activity.invite(buddy)
+		friends.connect('friend-added', self._friend_added_cb)
 
 	def add_friend(self, friend):
 		icon = FriendIcon(friend)
-		icon.connect('clicked', self.__friend_clicked_cb)
+
+		icon.connect('popup', self._friend_popup_cb)
+		icon.connect('popdown', self._friend_popdown_cb)
+
 		self.add_child(icon)
 		self._icon_layout.add_icon(icon)
 
-	def __friend_added_cb(self, data_model, friend):
+	def _friend_added_cb(self, data_model, friend):
 		self.add_friend(friend)
+
+	def _friend_popup_cb(self, icon, x1, y1, x2, y2):
+		grid = Grid()
+
+		self._popup = BuddyPopup(self._shell, grid, icon.get_friend())
+
+		[grid_x1, grid_y1] = grid.convert_from_screen(x1, y1)
+		[grid_x2, grid_y2] = grid.convert_from_screen(x2, y2)
+
+		if grid_x2 + self._popup.get_width() + 1 > Grid.ROWS:
+			grid_x = grid_x1 - self._popup.get_width() + 1
+		else:
+			grid_x = grid_x2 - 1
+
+		grid_y = grid_y1
+
+		if grid_y < 0:
+			grid_y = 0
+		if grid_y + self._popup.get_width() > Grid.ROWS:
+			grid_y = Grid.ROWS - self._popup.get_width()
+
+		grid.set_constraints(self._popup, grid_x, grid_y,
+							 self._popup.get_width(), self._popup.get_height())
+
+		self._popup.show()
+
+	def _friend_popdown_cb(self, friend):
+		self._popup.popdown()
+		self._popup = None