Refactor and documentation.

dsst/dsst_gtk3/handlers/base_data_handlers.py

@@ -0,0 +1,20 @@
+from dsst_gtk3 import dialogs, gtk_ui
+from dsst_sql import sql
+
+
+class BaseDataHandlers:
+    """Callback handlers for signals related to the manipulation of base data (players, drinks, ...)"""
+    def __init__(self, app: 'gtk_ui.GtkUi'):
+        self.app = app
+
+    def do_manage_players(self, *_):
+        result = dialogs.show_manage_players_dialog(self.app.ui, 'Manage Players')
+
+    def do_add_player(self, entry):
+        if entry.get_text():
+            sql.Player.create(name=entry.get_text())
+            entry.set_text('')
+            self.app.reload_base_data()
+
+    def do_manage_enemies(self, *_):
+        result = dialogs.show_manage_enemies_dialog(self.app.ui, self.app.get_selected_season_id())