add standard group selector to repo edit form

3 files changed, 21 insertions, 7 deletions

diff --git a/Logs/Group.hs b/Logs/Group.hs
index 09d431e63..a58eafe92 100644
--- a/Logs/Group.hs
+++ b/Logs/Group.hs
@@ -10,6 +10,7 @@ module Logs.Group (
 	groupSet,
 	lookupGroups,
 	groupMap,
+	getStandardGroup
 ) where
 
 import qualified Data.Map as M
@@ -21,6 +22,7 @@ import qualified Annex.Branch
 import qualified Annex
 import Logs.UUIDBased
 import Types.Group
+import Types.StandardGroups
 
 {- Filename of group.log. -}
 groupLog :: FilePath
@@ -64,3 +66,11 @@ makeGroupMap byuuid = GroupMap byuuid bygroup
 		bygroup = M.fromListWith S.union $
 			concat $ map explode $ M.toList byuuid
 		explode (u, s) = map (\g -> (g, S.singleton u)) (S.toList s)
+
+{- If a repository is in exactly one standard group, returns it. -}
+getStandardGroup :: UUID -> GroupMap -> Maybe StandardGroup
+getStandardGroup u m = maybe Nothing go $ u `M.lookup` groupsByUUID m
+	where
+		go s = case catMaybes $ map toStandardGroup $ S.toList s of
+			[g] -> Just g
+			_ -> Nothing
diff --git a/Logs/PreferredContent.hs b/Logs/PreferredContent.hs
index ed6dbb43e..840c36155 100644
--- a/Logs/PreferredContent.hs
+++ b/Logs/PreferredContent.hs
@@ -29,7 +29,7 @@ import Annex.UUID
 import Git.FilePath
 import Types.Group
 import Logs.Group
-import Annex.StandardGroups
+import Types.StandardGroups
 
 {- Filename of preferred-content.log. -}
 preferredContentLog :: FilePath
@@ -89,12 +89,9 @@ makeMatcher groupmap u s
 {- Standard matchers are pre-defined for some groups. If none is defined,
  - or a repository is in multiple groups with standard matchers, match all. -}
 standardMatcher :: GroupMap -> UUID -> Utility.Matcher.Matcher MatchFiles
-standardMatcher groupmap u = 
-	maybe matchAll findmatcher $ u `M.lookup` groupsByUUID groupmap
+standardMatcher m u = maybe matchAll use (getStandardGroup u m)
 	where
-		findmatcher s = case catMaybes $ map toStandardGroup $ S.toList s of
-			[g] -> makeMatcher groupmap u $ preferredContent g
-			_ -> matchAll
+		use = makeMatcher m u . preferredContent
 
 matchAll :: Utility.Matcher.Matcher MatchFiles
 matchAll = Utility.Matcher.generate []
diff --git a/Annex/StandardGroups.hs b/Types/StandardGroups.hs
index 7c47cc628..151fc3304 100644
--- a/Annex/StandardGroups.hs
+++ b/Types/StandardGroups.hs
@@ -5,9 +5,10 @@
  - Licensed under the GNU GPL version 3 or higher.
  -}
 
-module Annex.StandardGroups where
+module Types.StandardGroups where
 
 data StandardGroup = ClientGroup | TransferGroup | ArchiveGroup | BackupGroup
+	deriving (Eq, Ord, Enum, Bounded, Show)
 
 fromStandardGroup :: StandardGroup -> String
 fromStandardGroup ClientGroup = "client"
@@ -22,6 +23,12 @@ toStandardGroup "archive" = Just ArchiveGroup
 toStandardGroup "backup" = Just BackupGroup
 toStandardGroup _ = Nothing
 
+descStandardGroup :: StandardGroup -> String
+descStandardGroup ClientGroup = "client: a repository on your computer"
+descStandardGroup TransferGroup = "transfer: distributes data to clients"
+descStandardGroup ArchiveGroup = "archive: collect content that is not archived elsewhere"
+descStandardGroup BackupGroup = "backup: collects all content"
+
 {- See doc/preferred_content.mdwn for explanations of these expressions. -}
 preferredContent :: StandardGroup -> String
 preferredContent ClientGroup = "exclude=*/archive/*"