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module Daffm.View where
import Brick.Types (Widget)
import Brick.Widgets.Core (Padding (Max, Pad), hBox, hLimit, padLeft, padRight, str, vBox, vLimit, withAttr, (<+>))
import Brick.Widgets.Edit (renderEditor)
import qualified Brick.Widgets.List as L
import Daffm.Attrs (directoryAttr, directorySelectedAttr, fileAttr, fileSelectedAttr)
import Daffm.Types (AppState (..), FileInfo (..), FileType (..), FocusTarget (..))
import Data.Int (Int64)
import qualified Data.Set as Set
import qualified Data.Vector as Vec
import System.Posix.Types (FileMode)
import qualified System.PosixCompat as Posix
import Text.Printf (printf)
appView :: AppState -> [Widget FocusTarget]
appView appState@(AppState {stateFiles}) = [ui]
where
ui = vBox [vLimit 1 header, box, vLimit 1 cmdline]
header = headerView appState
cmdline = cmdlineView appState
box = L.renderList (fileItemView appState) True stateFiles
hFixed :: Int -> Widget n -> Widget n
hFixed w = hLimit w . padRight Max
headerView :: AppState -> Widget n
headerView (AppState {stateCwd}) = str stateCwd
fileItemView :: AppState -> Bool -> FileInfo -> Widget FocusTarget
fileItemView appState sel fileInfo@(FileInfo {filePath, fileSize, fileType, fileMode}) =
hBox
[ hFixed 2 fileSelectionView,
hFixed 10 $ fileModeView fileMode,
hFixed 6 $ fileTypeView fileType,
hFixed 7 $ fileSizeView fileSize,
fileNameView sel fileInfo
]
where
fileSizeView = str . prettyFileSize . fromIntegral
fileTypeView = str . showFileType
fileModeView = str . showFileMode
fileSelectionView = str $ if Set.member filePath $ stateFileSelections appState then ">" else " "
showFileType :: FileType -> String
showFileType Directory = "dir"
showFileType SymbolicLink = "link"
showFileType UnixSocket = "sock"
showFileType NamedPipe = "pipe"
showFileType CharacterDevice = "cdev"
showFileType BlockDevice = "bdev"
showFileType RegularFile = "file"
showFileType UnknownFileType = "?"
showFileMode :: FileMode -> String
showFileMode mode = permchars
where
perm m c = if Posix.intersectFileModes mode m == m then c else '-'
permchars =
[ perm Posix.ownerReadMode 'r',
perm Posix.ownerWriteMode 'w',
perm Posix.ownerExecuteMode 'x',
perm Posix.groupReadMode 'r',
perm Posix.groupWriteMode 'w',
perm Posix.groupExecuteMode 'x',
perm Posix.otherReadMode 'r',
perm Posix.otherWriteMode 'w',
perm Posix.otherExecuteMode 'x'
]
fileNameView :: Bool -> FileInfo -> Widget FocusTarget
fileNameView True (FileInfo {fileName, fileType = Directory}) = withAttr directorySelectedAttr $ str $ fileName <> "/"
fileNameView False (FileInfo {fileName, fileType = Directory}) = withAttr directoryAttr $ str $ fileName <> "/"
fileNameView True (FileInfo {fileName}) = withAttr fileSelectedAttr $ str fileName
fileNameView False (FileInfo {fileName}) = withAttr fileAttr $ str fileName
cmdlineView :: AppState -> Widget FocusTarget
cmdlineView (AppState {stateFocusTarget = FocusCmdline, stateCmdlineEditor}) =
str ":" <+> renderEditor (str . unlines) True stateCmdlineEditor
cmdlineView (AppState {stateFiles}) =
hBox [str ":", padLeft Max $ padRight (Pad 1) posIndicator]
where
posIndicator = str $ cur <> "/" <> total
cur = case L.listSelected stateFiles of
Nothing -> "-"
Just n -> show (n + 1)
total = show $ Vec.length $ L.listElements stateFiles
prettyFileSize :: Int64 -> String
prettyFileSize i
| i >= 2 ^ (40 :: Int64) = format (i `divBy` (2 ** 40)) <> "T"
| i >= 2 ^ (30 :: Int64) = format (i `divBy` (2 ** 30)) <> "G"
| i >= 2 ^ (20 :: Int64) = format (i `divBy` (2 ** 20)) <> "M"
| i >= 2 ^ (10 :: Int64) = format (i `divBy` (2 ** 10)) <> "K"
| otherwise = show i
where
format = printf "%0.1f"
divBy :: Int64 -> Double -> Double
divBy a b = (fromIntegral a :: Double) / b
|
