105 lines
2.8 KiB
Haskell
105 lines
2.8 KiB
Haskell
{- |
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mtlstats
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Copyright (C) 2019 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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module Mtlstats.Prompt (
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-- * Prompt Functions
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drawPrompt,
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promptHandler,
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strPrompt,
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numPrompt,
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-- * Individual prompts
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homeScorePrompt,
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awayScorePrompt
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) where
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import Control.Monad (when)
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import Control.Monad.Trans.State (gets, modify)
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import Data.Char (isDigit, toUpper)
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import Data.Foldable (forM_)
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import Lens.Micro ((^.), (.~), (?~))
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import Lens.Micro.Extras (view)
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import Text.Read (readMaybe)
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import qualified UI.NCurses as C
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import Mtlstats.Actions
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import Mtlstats.Types
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-- | Draws the prompt to the screen
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drawPrompt :: Prompt -> ProgState -> C.Update C.CursorMode
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drawPrompt p s = do
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promptDrawer p s
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return C.CursorVisible
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-- | Event handler for a prompt
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promptHandler :: Prompt -> C.Event -> Action ()
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promptHandler p (C.EventCharacter '\n') = do
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val <- gets $ view inputBuffer
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modify $ inputBuffer .~ ""
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promptAction p val
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promptHandler p (C.EventCharacter c) = let
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c' = toUpper c
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in when (promptCharCheck p c') $
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modify $ addChar c'
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promptHandler _ (C.EventSpecialKey C.KeyBackspace) =
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modify removeChar
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promptHandler p (C.EventSpecialKey (C.KeyFunction k)) =
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promptFunctionKey p k
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promptHandler _ _ = return ()
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-- | Builds a string prompt
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strPrompt
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:: String
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-- ^ The prompt string
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-> (String -> Action ())
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-- ^ The callback function for the result
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-> Prompt
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strPrompt pStr act = Prompt
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{ promptDrawer = drawSimplePrompt pStr
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, promptCharCheck = const True
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, promptAction = act
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, promptFunctionKey = const $ return ()
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}
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-- | Builds a numeric prompt
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numPrompt
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:: String
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-- ^ The prompt string
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-> (Int -> Action ())
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-- ^ The callback function for the result
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-> Prompt
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numPrompt pStr act = Prompt
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{ promptDrawer = drawSimplePrompt pStr
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, promptCharCheck = isDigit
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, promptAction = \inStr -> forM_ (readMaybe inStr) act
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, promptFunctionKey = const $ return ()
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}
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homeScorePrompt :: Prompt
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homeScorePrompt = numPrompt "Home score: " $
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modify . (progMode . homeScoreL ?~)
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awayScorePrompt :: Prompt
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awayScorePrompt = numPrompt "Away score: " $
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modify . (progMode . awayScoreL ?~)
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drawSimplePrompt :: String -> ProgState -> C.Update ()
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drawSimplePrompt pStr s = C.drawString $ pStr ++ s ^. inputBuffer
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