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|
{- Lazymail default keymap.
-
- Copyright 2013 Raúl Benencia <rul@kalgan.cc>
-
- Licensed under the GNU GPL version 3 or higher
-}
module Lazymail.Keymap
( defaultGlobalKeymap
, defaultMaildirKeymap
, defaultIndexKeymap
, defaultEmailKeymap
, defaultComposeKeymap
, findHandler
) where
import UI.NCurses(Event(..), Key(..))
import Lazymail.Types(Keymap, LazymailState(..), Mode(..), LazymailConfig(..))
import Lazymail.Handlers(advanceMode, previousMode, scrollUp, scrollDown)
defaultGlobalKeymap = [ ([EventCharacter '\n', EventCharacter ' ', EventSpecialKey KeyRightArrow], advanceMode)
, ([EventCharacter 'q', EventCharacter 'Q'], previousMode)
, ([EventSpecialKey KeyUpArrow, EventCharacter 'k'], scrollUp)
, ([EventSpecialKey KeyDownArrow, EventCharacter 'j'], scrollDown)
]
defaultMaildirKeymap = []
defaultIndexKeymap = []
defaultEmailKeymap = []
defaultComposeKeymap = []
-- | Try to find a keymap for the current mode. If nothing is found, then
-- try looking up in the global keymap.
findHandler st cfg ev = case modeHandler (mode st) ev of
Nothing -> globalHandler ev
Just h -> Just h -- I think I saw a way of using an as-pattern in this case
where
modeHandler MaildirMode = lookupHandler $ maildirModeKeymap cfg
modeHandler IndexMode = lookupHandler $ indexModeKeymap cfg
modeHandler EmailMode = lookupHandler $ emailModeKeymap cfg
modeHandler ComposeMode = lookupHandler $ composeModeKeymap cfg
globalHandler = lookupHandler $ globalKeymap cfg
lookupHandler [] _ = Nothing
lookupHandler (km:kms) ev
| elem ev (fst km) = Just $ snd km
| otherwise = lookupHandler kms ev
|
