Add new handlers, TailboneHandler and MenuHandler

tailbone/handler.py

@@ -0,0 +1,49 @@
+# -*- coding: utf-8; -*-
+################################################################################
+#
+#  Rattail -- Retail Software Framework
+#  Copyright © 2010-2023 Lance Edgar
+#
+#  This file is part of Rattail.
+#
+#  Rattail is free software: you can redistribute it and/or modify it under the
+#  terms of the GNU General Public License as published by the Free Software
+#  Foundation, either version 3 of the License, or (at your option) any later
+#  version.
+#
+#  Rattail is distributed in the hope that it will be useful, but WITHOUT ANY
+#  WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+#  FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+#  details.
+#
+#  You should have received a copy of the GNU General Public License along with
+#  Rattail.  If not, see <http://www.gnu.org/licenses/>.
+#
+################################################################################
+"""
+Tailbone Handler
+"""
+
+from __future__ import unicode_literals, absolute_import
+
+from rattail.app import GenericHandler
+
+
+class TailboneHandler(GenericHandler):
+    """
+    Base class and default implementation for Tailbone handler.
+    """
+
+    def get_menu_handler(self, **kwargs):
+        """
+        Get the configured "menu" handler.
+
+        :returns: The :class:`~tailbone.menus.MenuHandler` instance
+           for the app.
+        """
+        if not hasattr(self, 'menu_handler'):
+            spec = self.config.get('tailbone.menus', 'handler',
+                                   default='tailbone.menus:MenuHandler')
+            Handler = self.app.load_object(spec)
+            self.menu_handler = Handler(self.config)
+        return self.menu_handler