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|
{- Lazymail state, and operations on it.
-
- Copyright 2013 Raúl Benencia <rul@kalgan.cc>
-
- Licensed under the GNU GPL version 3 or higher
-
-}
module State where
import Text.ParserCombinators.Parsec.Rfc2822(Message, GenericMessage(..))
import UI.NCurses(ColorID(..), defaultColorID)
import Network.Email.Mailbox(Flag(..), Flags)
import System.FilePath
data Mode = MaildirMode | IndexMode | EmailMode | ComposeMode
data LazymailState = LazymailState {
mode :: Mode
, basePath :: FilePath
, screenRows :: Int
, screenColumns :: Int
, currentRow :: Int
, columnPadding :: Int
, exitRequested :: Bool
, statusBar :: Bool
, maildirState :: MaildirState
, indexState :: IndexState
, emailState :: EmailState
, composeState :: ComposeState
, colorStyle :: ColorStyle
}
data MaildirState = MaildirState {
selectedRowMD :: Int
, selectedMD :: String
, detectedMDs :: [(FilePath, String)]
, scrollRowMD :: Int
, scrollBufferMD :: [(FilePath, String)]
}
data IndexState = IndexState {
selectedRowIn :: Int
, selectedEmailPath :: FilePath
, selectedEmails :: [(FilePath, String)]
, scrollRowIn :: Int
, currentInLen :: Int
, scrollBufferIn :: [(FilePath, String)]
}
data ComposeState = ComposeState {
composition :: Maybe String
}
data EmailState = EmailState {
scrollRowEm :: Int
, emailLines :: [String]
, currentEmail :: Message
}
data ColorStyle = ColorStyle {
baseColorID :: ColorID
, selectionColorID :: ColorID
, statusBarColorID :: ColorID
, headerColorID :: ColorID
}
initialState = LazymailState {
mode = MaildirMode
, basePath = ""
, screenRows = 0
, screenColumns = 0
, currentRow = 0
, columnPadding = 0
, exitRequested = False
, statusBar = True
, maildirState = initialMaildirState
, indexState = initialIndexState
, composeState = initialComposeState
, emailState = initialEmailState
, colorStyle = initialColorStyle
}
initialMaildirState = MaildirState {
selectedRowMD = 0
, selectedMD = ""
, detectedMDs = []
, scrollRowMD = 0
, scrollBufferMD = []
}
initialIndexState = IndexState {
selectedRowIn = 0
, selectedEmailPath = ""
, selectedEmails = []
, scrollRowIn = 0
, currentInLen = 0
, scrollBufferIn = []
}
initialEmailState = EmailState {
scrollRowEm = 0
, emailLines = []
, currentEmail = Message [] "Dummy email"
}
initialComposeState = ComposeState {
composition = Nothing
}
initialColorStyle = ColorStyle {
baseColorID = defaultColorID
, selectionColorID = defaultColorID
, statusBarColorID = defaultColorID
, headerColorID = defaultColorID
}
scrColsAsInteger st = toInteger $ screenColumns st
scrRowsAsInteger st = toInteger $ screenRows st
curRowAsInteger st = toInteger $ currentRow st
colPadAsInteger st = toInteger $ columnPadding st
incrementSelectedRow st | (selectedRow st) < limit =
case (mode st) of
MaildirMode ->
let
sr = (selectedRowMD . maildirState) st
maildirState' = (maildirState st) { selectedRowMD = sr + 1 }
in
st { maildirState = maildirState' }
IndexMode ->
let
sr = (selectedRowIn . indexState) st
indexState' = (indexState st) { selectedRowIn = sr + 1 }
in
st { indexState = indexState' }
_ -> st
| otherwise = st
where
scrRows = screenRows st
curInLen = length $ selectedEmails . indexState $ st
curMDLen = length $ detectedMDs . maildirState $ st
limit' = case (mode st) of
MaildirMode -> if curMDLen < scrRows then curMDLen - 1 else scrRows
IndexMode -> if curInLen < scrRows then curInLen - 1 else scrRows
limit = if (statusBar st) && (limit' == scrRows)
then fromIntegral $ limit' - 2
else fromIntegral limit'
decrementSelectedRow st | (selectedRow st) > 0 =
case (mode st) of
MaildirMode ->
let
sr = (selectedRowMD . maildirState) st
maildirState' = (maildirState st) { selectedRowMD = sr - 1 }
in
st { maildirState = maildirState' }
IndexMode ->
let
sr = (selectedRowIn . indexState) st
indexState' = (indexState st) { selectedRowIn = sr - 1 }
in
st { indexState = indexState' }
_ -> st
| otherwise = st
selectedRow st = case (mode st) of
MaildirMode -> selectedRowMD . maildirState $ st
IndexMode -> selectedRowIn . indexState $ st
|
