add align_mode configobj check

that checks if value is valid align mode string

1 files changed, 9 insertions, 1 deletions

diff --git a/alot/settings/checks.py b/alot/settings/checks.py
index 3665f415..dc68827a 100644
--- a/alot/settings/checks.py
+++ b/alot/settings/checks.py
@@ -7,7 +7,7 @@ from urwid import AttrSpec, AttrSpecError
 from urlparse import urlparse
 from validate import VdtTypeError
 from validate import is_list
-from validate import ValidateError, VdtValueTooLongError
+from validate import ValidateError, VdtValueTooLongError, VdtValueError
 
 from alot import crypto
 from alot.errors import GPGProblem
@@ -49,6 +49,14 @@ def attr_triple(value):
     return mono, normal, high
 
 
+def align_mode(value):
+    """
+    test if value is one of 'left', 'right' or 'center'
+    """
+    if value not in ['left', 'right', 'center']:
+        raise VdtValueError
+    return value
+
 def mail_container(value):
     """
     Check that the value points to a valid mail container,