ui: refactor signals

pqcli/ui/roster_view.py

@@ -7,17 +7,10 @@ from pqcli.ui.button import MenuButton
 
 
 class RosterView(urwid.Filler):
-    def __init__(
-        self,
-        roster: Roster,
-        on_new_game: T.Callable,
-        on_resume_game: T.Callable,
-        on_exit: T.Callable,
-    ) -> None:
+    signals = ["load_game", "new_game", "exit"]
+
+    def __init__(self, roster: Roster) -> None:
         self.roster = roster
-        self.on_new_game = on_new_game
-        self.on_resume_game = on_resume_game
-        self.on_exit = on_exit
 
         logo = urwid.BigText("ProgressQuest", urwid.HalfBlock5x4Font())
 
@@ -52,17 +45,17 @@ class RosterView(urwid.Filler):
 
     def on_resume_game_press(self, user_data: T.Any) -> None:
         player_name = T.cast(str, user_data)
-        self.on_resume_game(player_name)
+        self._emit("load_game", player_data)
 
     def on_new_game_press(self, _user_data: T.Any) -> None:
-        self.on_new_game()
+        self._emit("new_game")
 
     def on_exit_press(self, _user_data: T.Any) -> None:
-        self.on_exit()
+        self._emit("exit")
 
     def unhandled_input(self, key: str) -> bool:
         if key == "esc":
-            self.on_exit()
+            self._emit("exit")
             return True
 
         return False