138 lines
5.3 KiB
Haskell
138 lines
5.3 KiB
Haskell
-- The error screen, showing a current error condition (such as a parse error after reloading the journal)
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{-# LANGUAGE OverloadedStrings, FlexibleContexts, RecordWildCards #-}
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module Hledger.UI.ErrorScreen
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(errorScreen
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,stReloadJournalIfChanged
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)
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where
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-- import Lens.Micro ((^.))
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import Control.Monad.IO.Class (liftIO)
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import Data.Monoid
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-- import Data.Maybe
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import Data.Time.Calendar (Day)
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import Graphics.Vty as Vty
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import Brick
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-- import Brick.Widgets.List
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-- import Brick.Widgets.Border
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-- import Brick.Widgets.Border.Style
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-- import Brick.Widgets.Center
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-- import Text.Printf
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-- import Hledger
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import Hledger.Cli hiding (progname,prognameandversion,green)
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import Hledger.UI.UIOptions
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-- import Hledger.UI.Theme
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import Hledger.UI.UITypes
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import Hledger.UI.UIUtils
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errorScreen :: Screen
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errorScreen = ErrorScreen{
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sInit = esInit
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,sDraw = esDraw
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,sHandle = esHandle
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,esError = ""
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}
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esInit :: Day -> Bool -> AppState -> AppState
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esInit _ _ st@AppState{aScreen=ErrorScreen{}} = st
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esInit _ _ _ = error "init function called with wrong screen type, should not happen"
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esDraw :: AppState -> [Widget]
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esDraw AppState{ -- aopts=_uopts@UIOpts{cliopts_=_copts@CliOpts{reportopts_=_ropts@ReportOpts{query_=querystr}}},
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aScreen=ErrorScreen{..}} = [ui]
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where
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toplabel = withAttr ("border" <> "bold") (str "Oops. Please fix this problem then press g to reload")
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-- <+> str " transactions"
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-- <+> borderQueryStr querystr -- no, account transactions report shows all transactions in the acct ?
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-- <+> str " and subs"
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-- <+> str " ("
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-- <+> cur
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-- <+> str "/"
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-- <+> total
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-- <+> str ")"
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-- cur = str $ case l^.listSelectedL of
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-- Nothing -> "-"
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-- Just i -> show (i + 1)
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-- total = str $ show $ length displayitems
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-- displayitems = V.toList $ l^.listElementsL
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bottomlabel = borderKeysStr [
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-- ("up/down/pgup/pgdown/home/end", "move")
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("g", "reload")
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-- ,("left", "return to accounts")
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]
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-- query = query_ $ reportopts_ $ cliopts_ opts
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ui = Widget Greedy Greedy $ do
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-- calculate column widths, based on current available width
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-- c <- getContext
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-- let
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-- totalwidth = c^.availWidthL
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-- - 2 -- XXX due to margin ? shouldn't be necessary (cf UIUtils)
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render $ defaultLayout toplabel bottomlabel $ withAttr "error" $ str $ esError
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esDraw _ = error "draw function called with wrong screen type, should not happen"
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-- drawErrorItem :: (Int,Int,Int,Int,Int) -> Bool -> (String,String,String,String,String) -> Widget
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-- drawErrorItem (datewidth,descwidth,acctswidth,changewidth,balwidth) selected (date,desc,accts,change,bal) =
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-- Widget Greedy Fixed $ do
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-- render $
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-- str (fitString (Just datewidth) (Just datewidth) True True date) <+>
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-- str " " <+>
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-- str (fitString (Just descwidth) (Just descwidth) True True desc) <+>
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-- str " " <+>
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-- str (fitString (Just acctswidth) (Just acctswidth) True True accts) <+>
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-- str " " <+>
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-- withAttr changeattr (str (fitString (Just changewidth) (Just changewidth) True False change)) <+>
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-- str " " <+>
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-- withAttr balattr (str (fitString (Just balwidth) (Just balwidth) True False bal))
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-- where
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-- changeattr | '-' `elem` change = sel $ "list" <> "amount" <> "decrease"
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-- | otherwise = sel $ "list" <> "amount" <> "increase"
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-- balattr | '-' `elem` bal = sel $ "list" <> "balance" <> "negative"
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-- | otherwise = sel $ "list" <> "balance" <> "positive"
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-- sel | selected = (<> "selected")
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-- | otherwise = id
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esHandle :: AppState -> Vty.Event -> EventM (Next AppState)
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esHandle st@AppState{
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aScreen=s@ErrorScreen{}
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,aopts=UIOpts{cliopts_=copts}
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,ajournal=j
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} e = do
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d <- liftIO getCurrentDay
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case e of
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Vty.EvKey (Vty.KChar 'q') [] -> halt st
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Vty.EvKey Vty.KEsc [] -> continue $ resetScreens d st
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Vty.EvKey (Vty.KChar 'g') [] -> do
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(ej, _) <- liftIO $ journalReloadIfChanged copts d j
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case ej of
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Left err -> continue st{aScreen=s{esError=err}} -- show latest parse error
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Right j' -> continue $ regenerateScreens j' d $ popScreen st -- return to previous screen, and reload it
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-- Vty.EvKey (Vty.KLeft) [] -> continue $ popScreen st
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-- Vty.EvKey (Vty.KRight) [] -> error (show curItem) where curItem = listSelectedElement is
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-- fall through to the list's event handler (handles [pg]up/down)
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_ -> do continue st
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-- is' <- handleEvent ev is
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-- continue st{aScreen=s{rsState=is'}}
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-- continue =<< handleEventLensed st someLens e
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esHandle _ _ = error "event handler called with wrong screen type, should not happen"
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-- If journal file(s) have changed, reload the journal and regenerate all screens.
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-- This is here so it can reference the error screen.
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stReloadJournalIfChanged :: CliOpts -> Day -> Journal -> AppState -> IO AppState
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stReloadJournalIfChanged copts d j st = do
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(ej, _) <- journalReloadIfChanged copts d j
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return $ case ej of
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Right j' -> regenerateScreens j' d st
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Left err -> screenEnter d errorScreen{esError=err} st
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