X-Git-Url: https://git.madduck.net/etc/taskwarrior.git/blobdiff_plain/f2d008def446626c071a9ceb2c80acb74d477cd0..e9ac4a95bfab8a3e323e15f5f26a6302a87384a3:/tasklib/backends.py

diff --git a/tasklib/backends.py b/tasklib/backends.py
index fe24fd2..0d01470 100644
--- a/tasklib/backends.py
+++ b/tasklib/backends.py
@@ -22,7 +22,10 @@ VERSION_2_4_5 = six.u('2.4.5')
 
 class Backend(object):
 
-    filter_class = TaskWarriorFilter
+    @abc.abstractproperty
+    def filter_class(self):
+        """Returns the TaskFilter class used by this backend"""
+        pass
 
     @abc.abstractmethod
     def filter_tasks(self, filter_obj):
@@ -208,6 +211,10 @@ class TaskWarrior(object):
                              "datetime, its type is not supported: {}"
                              .format(type(value)))
 
+    @property
+    def filter_class(self):
+        return TaskWarriorFilter
+
     # Public interface
 
     def get_config(self):