81 lines
1.9 KiB
Haskell
81 lines
1.9 KiB
Haskell
{- |
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mtlstats
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Copyright (C) 1984, 1985, 2019, 2020, 2021 Rhéal Lamothe
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<rheal.lamothe@gmail.com>
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or (at
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your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <https://www.gnu.org/licenses/>.
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-}
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{-# LANGUAGE TemplateHaskell #-}
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module Mtlstats.Types.Menu (
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-- * Types
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Menu (..),
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MenuItem (..),
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-- * Lenses
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-- ** Menu Lenses
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menuTitle,
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menuDefault,
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menuItems,
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-- ** MenuItem Lenses
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miKey,
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miDescription,
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miAction,
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) where
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import Lens.Micro ((^.))
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import Lens.Micro.TH (makeLenses)
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import Mtlstats.Format
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import Mtlstats.Types
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-- | Defines a menu
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data Menu a = Menu
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{ _menuTitle :: String
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-- ^ The menu title
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, _menuDefault :: a
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-- ^ The value to return on incorrect selection or other event
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, _menuItems :: [MenuItem a]
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-- ^ The list of items in the menu
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}
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-- | Defines a menu item
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data MenuItem a = MenuItem
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{ _miKey :: Char
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-- ^ The key that selects the menu item
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, _miDescription :: String
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-- ^ The description of the menu item
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, _miAction :: Action a
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-- ^ The action to be performed when selected
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}
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makeLenses ''Menu
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makeLenses ''MenuItem
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instance Show (Menu a) where
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show m = unlines
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$ [ m^.menuTitle
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, ""
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]
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++ body
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where
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body = map (left width) items
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width = maximum $ map length items
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items = map show $ m^.menuItems
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instance Show (MenuItem a) where
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show i = [i ^. miKey] ++ ": " ++ i ^. miDescription
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