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https://github.com/jtdaugherty/brick.git
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89 lines
2.7 KiB
Haskell
89 lines
2.7 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE CPP #-}
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module Main where
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#if !(MIN_VERSION_base(4,11,0))
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import Data.Monoid
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#endif
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import qualified Graphics.Vty as V
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import qualified Brick.Main as M
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import qualified Brick.Widgets.List as L
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import Brick.Types
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( Widget
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, BrickEvent(..)
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)
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import Brick.Widgets.Center
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( center
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, hCenter
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)
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import Brick.Widgets.Border
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( borderWithLabel
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)
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import Brick.Widgets.Core
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( vBox, (<=>), padTop
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, hLimit, vLimit, txt
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)
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import Brick.Widgets.FileBrowser as FB
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import qualified Brick.AttrMap as A
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import Brick.Util (on, fg)
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import qualified Brick.Types as T
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data Name = FileBrowser1
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deriving (Eq, Show, Ord)
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drawUI :: FileBrowser Name -> [Widget Name]
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drawUI b = [center $ ui <=> help]
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where
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ui = hCenter $
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vLimit 15 $
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hLimit 50 $
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borderWithLabel (txt "Choose a file") $
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FB.renderFileBrowser True b
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help = padTop (T.Pad 1) $
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vBox [ hCenter $ txt "up/down: select"
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, hCenter $ txt "/: search, Ctrl-C: cancel search"
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, hCenter $ txt "enter: change directory or select file"
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, hCenter $ txt "esc: quit"
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]
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appEvent :: FB.FileBrowser Name -> BrickEvent Name e -> T.EventM Name (T.Next (FB.FileBrowser Name))
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appEvent b (VtyEvent ev) =
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case ev of
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V.EvKey V.KEsc [] -> M.halt b
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_ -> do
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b' <- FB.handleFileBrowserEvent ev b
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-- If the browser has a selected file after handling the
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-- event (because the user pressed Enter), shut down.
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case fileBrowserSelection b' of
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Nothing -> M.continue b'
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Just _ -> M.halt b'
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appEvent b _ = M.continue b
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theMap :: A.AttrMap
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theMap = A.attrMap V.defAttr
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[ (L.listSelectedFocusedAttr, V.black `on` V.yellow)
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, (FB.fileBrowserCurrentDirectoryAttr, V.white `on` V.blue)
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, (FB.fileBrowserSelectionInfoAttr, V.white `on` V.blue)
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, (FB.fileBrowserDirectoryAttr, fg V.blue)
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, (FB.fileBrowserBlockDeviceAttr, fg V.magenta)
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, (FB.fileBrowserCharacterDeviceAttr, fg V.green)
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, (FB.fileBrowserNamedPipeAttr, fg V.yellow)
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, (FB.fileBrowserSymbolicLinkAttr, fg V.cyan)
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, (FB.fileBrowserSocketAttr, fg V.red)
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]
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theApp :: M.App (FileBrowser Name) e Name
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theApp =
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M.App { M.appDraw = drawUI
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, M.appChooseCursor = M.showFirstCursor
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, M.appHandleEvent = appEvent
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, M.appStartEvent = return
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, M.appAttrMap = const theMap
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}
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main :: IO ()
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main = do
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b <- M.defaultMain theApp =<< FB.newFileBrowser FileBrowser1 Nothing
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putStrLn $ "Selected entry: " <> show (FB.fileBrowserSelection b)
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