mirror of
https://github.com/jtdaugherty/brick.git
synced 2024-11-29 21:46:11 +03:00
c07e9c0503
This change makes the renderEditor function take the content drawing function that "editor" previously took. This does a better job of separating presentation and representation concerns, and the content drawing function never should have been part of the state to begin with. This change removed the corresponding lens and Editor accessor for the drawing function, removed the smart constructor parameter, and moved it to be a parameter of the renderEditor function.
94 lines
2.8 KiB
Haskell
94 lines
2.8 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
|
|
{-# LANGUAGE TemplateHaskell #-}
|
|
{-# LANGUAGE RankNTypes #-}
|
|
module Main where
|
|
|
|
import Lens.Micro
|
|
import Lens.Micro.TH
|
|
import qualified Graphics.Vty as V
|
|
|
|
import qualified Brick.Main as M
|
|
import qualified Brick.Types as T
|
|
import Brick.Widgets.Core
|
|
( (<+>)
|
|
, (<=>)
|
|
, hLimit
|
|
, vLimit
|
|
, str
|
|
)
|
|
import qualified Brick.Widgets.Center as C
|
|
import qualified Brick.Widgets.Edit as E
|
|
import qualified Brick.AttrMap as A
|
|
import qualified Brick.Focus as F
|
|
import Brick.Util (on)
|
|
|
|
data Name = Edit1
|
|
| Edit2
|
|
deriving (Ord, Show, Eq)
|
|
|
|
data St =
|
|
St { _focusRing :: F.FocusRing Name
|
|
, _edit1 :: E.Editor String Name
|
|
, _edit2 :: E.Editor String Name
|
|
}
|
|
|
|
makeLenses ''St
|
|
|
|
drawUI :: St -> [T.Widget Name]
|
|
drawUI st = [ui]
|
|
where
|
|
e1 = F.withFocusRing (st^.focusRing) (E.renderEditor (str . unlines)) (st^.edit1)
|
|
e2 = F.withFocusRing (st^.focusRing) (E.renderEditor (str . unlines)) (st^.edit2)
|
|
|
|
ui = C.center $
|
|
(str "Input 1 (unlimited): " <+> (hLimit 30 $ vLimit 5 e1)) <=>
|
|
str " " <=>
|
|
(str "Input 2 (limited to 2 lines): " <+> (hLimit 30 e2)) <=>
|
|
str " " <=>
|
|
str "Press Tab to switch between editors, Esc to quit."
|
|
|
|
appEvent :: St -> T.BrickEvent Name e -> T.EventM Name (T.Next St)
|
|
appEvent st (T.VtyEvent ev) =
|
|
case ev of
|
|
V.EvKey V.KEsc [] -> M.halt st
|
|
V.EvKey (V.KChar '\t') [] -> M.continue $ st & focusRing %~ F.focusNext
|
|
V.EvKey V.KBackTab [] -> M.continue $ st & focusRing %~ F.focusPrev
|
|
|
|
_ -> M.continue =<< case F.focusGetCurrent (st^.focusRing) of
|
|
Just Edit1 -> T.handleEventLensed st edit1 E.handleEditorEvent ev
|
|
Just Edit2 -> T.handleEventLensed st edit2 E.handleEditorEvent ev
|
|
Nothing -> return st
|
|
appEvent st _ = M.continue st
|
|
|
|
initialState :: St
|
|
initialState =
|
|
St (F.focusRing [Edit1, Edit2])
|
|
(E.editor Edit1 Nothing "")
|
|
(E.editor Edit2 (Just 2) "")
|
|
|
|
theMap :: A.AttrMap
|
|
theMap = A.attrMap V.defAttr
|
|
[ (E.editAttr, V.white `on` V.blue)
|
|
, (E.editFocusedAttr, V.black `on` V.yellow)
|
|
]
|
|
|
|
appCursor :: St -> [T.CursorLocation Name] -> Maybe (T.CursorLocation Name)
|
|
appCursor = F.focusRingCursor (^.focusRing)
|
|
|
|
theApp :: M.App St e Name
|
|
theApp =
|
|
M.App { M.appDraw = drawUI
|
|
, M.appChooseCursor = appCursor
|
|
, M.appHandleEvent = appEvent
|
|
, M.appStartEvent = return
|
|
, M.appAttrMap = const theMap
|
|
}
|
|
|
|
main :: IO ()
|
|
main = do
|
|
st <- M.defaultMain theApp initialState
|
|
putStrLn "In input 1 you entered:\n"
|
|
putStrLn $ unlines $ E.getEditContents $ st^.edit1
|
|
putStrLn "In input 2 you entered:\n"
|
|
putStrLn $ unlines $ E.getEditContents $ st^.edit2
|