Native gui: implement data lists for all modules

yms/view/view.py

@@ -8,10 +8,11 @@ SPDX-License-Identifier: WTFPL
 import os
 import gi
 gi.require_version("Gtk", "3.0")
-from gi.repository import Gtk
+from gi.repository import GLib, Gtk, Gdk
 from yms import gtkutils
 
 class View:
+
     def __init__(self, context, title, ui_file):
         self.context = context
         self.db = context.db
@@ -25,6 +26,11 @@ class View:
         self.topwidget = builder.get_object("topobject")
         gtkutils.init_named_controls(self, builder)
 
+    def format_date(self, dateval):
+        if dateval is None:
+            return ''
+        return dateval.strftime(self.context.datefmt)
+
     def on_textview_keypress(self, widget, event):
         # Generic limit length function
         if event.state & Gdk.ModifierType.CONTROL_MASK: