62 lines
1.5 KiB
Haskell
62 lines
1.5 KiB
Haskell
{- types for metadata based branch views
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-
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- Copyright 2014 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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{-# LANGUAGE OverloadedStrings #-}
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module Types.View where
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import Annex.Common
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import Types.MetaData
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import Utility.QuickCheck
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import qualified Git
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import qualified Data.Set as S
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{- A view is a list of fields with filters on their allowed values,
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- which are applied to files in a parent git branch. -}
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data View = View
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{ viewParentBranch :: Git.Branch
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, viewComponents :: [ViewComponent]
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}
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deriving (Eq, Read, Show)
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instance Arbitrary View where
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arbitrary = View (Git.Ref "master")
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<$> resize 10 (listOf arbitrary)
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data ViewComponent = ViewComponent
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{ viewField :: MetaField
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, viewFilter :: ViewFilter
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, viewVisible :: Bool
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}
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deriving (Eq, Read, Show)
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instance Arbitrary ViewComponent where
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arbitrary = ViewComponent <$> arbitrary <*> arbitrary <*> arbitrary
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data ViewFilter
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= FilterValues (S.Set MetaValue)
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| FilterGlob String
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| ExcludeValues (S.Set MetaValue)
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deriving (Eq, Read, Show)
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instance Arbitrary ViewFilter where
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arbitrary = do
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s <- S.fromList <$> resize 10 (listOf arbitrary)
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ifM arbitrary
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( return (FilterValues s)
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, return (ExcludeValues s)
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)
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mkViewComponent :: MetaField -> ViewFilter -> ViewComponent
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mkViewComponent f vf = ViewComponent f vf (multiValue vf)
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{- Can a ViewFilter match multiple different MetaValues? -}
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multiValue :: ViewFilter -> Bool
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multiValue (FilterValues s) = S.size s > 1
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multiValue (FilterGlob _) = True
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multiValue (ExcludeValues _) = False
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