278 lines
12 KiB
Haskell
278 lines
12 KiB
Haskell
-- The account register screen, showing transactions in an account, like hledger-web's register.
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{-# LANGUAGE OverloadedStrings, FlexibleContexts, RecordWildCards #-}
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module Hledger.UI.RegisterScreen
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(registerScreen
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,rsSetAccount
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)
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where
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import Lens.Micro.Platform ((^.))
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import Control.Monad.IO.Class (liftIO)
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import Data.List
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import Data.List.Split (splitOn)
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import Data.Monoid
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import Data.Maybe
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import qualified Data.Text as T
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import Data.Time.Calendar (Day)
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import qualified Data.Vector as V
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import Graphics.Vty
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import Brick
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import Brick.Widgets.List
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import Brick.Widgets.Edit
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import Brick.Widgets.Border (borderAttr)
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import System.Console.ANSI
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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.UIState
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import Hledger.UI.UIUtils
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import Hledger.UI.TransactionScreen
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import Hledger.UI.ErrorScreen
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registerScreen :: Screen
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registerScreen = RegisterScreen{
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sInit = rsInit
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,sDraw = rsDraw
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,sHandle = rsHandle
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,rsList = list "register" V.empty 1
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,rsAccount = ""
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}
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rsSetAccount a scr@RegisterScreen{} = scr{rsAccount=a}
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rsSetAccount _ scr = scr
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rsInit :: Day -> Bool -> UIState -> UIState
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rsInit d reset ui@UIState{aopts=opts, ajournal=j, aScreen=s@RegisterScreen{..}} =
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ui{aScreen=s{rsList=newitems'}}
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where
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-- gather arguments and queries
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ropts = (reportopts_ $ cliopts_ opts)
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{
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depth_=Nothing,
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balancetype_=HistoricalBalance
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}
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-- XXX temp
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thisacctq = Acct $ accountNameToAccountRegex rsAccount -- includes subs
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q = filterQuery (not . queryIsDepth) $ queryFromOpts d ropts
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(_label,items) = accountTransactionsReport ropts j q thisacctq
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items' = (if empty_ ropts then id else filter (not . isZeroMixedAmount . fifth6)) $ -- without --empty, exclude no-change txns
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reverse -- most recent last
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items
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-- generate pre-rendered list items. This helps calculate column widths.
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displayitems = map displayitem items'
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where
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displayitem (t, _, _issplit, otheracctsstr, change, bal) =
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RegisterScreenItem{rsItemDate = showDate $ tdate t
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,rsItemDescription = T.unpack $ tdescription t
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,rsItemOtherAccounts = case splitOn ", " otheracctsstr of
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[s] -> s
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ss -> intercalate ", " ss
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-- _ -> "<split>" -- should do this if accounts field width < 30
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,rsItemChangeAmount = showMixedAmountOneLineWithoutPrice change
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,rsItemBalanceAmount = showMixedAmountOneLineWithoutPrice bal
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,rsItemTransaction = t
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}
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-- build the List
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newitems = list (Name "register") (V.fromList displayitems) 1
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-- keep the selection on the previously selected transaction if possible,
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-- (eg after toggling nonzero mode), otherwise select the last element.
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newitems' = listMoveTo newselidx newitems
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where
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newselidx = case (reset, listSelectedElement rsList) of
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(True, _) -> 0
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(_, Nothing) -> endidx
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(_, Just (_,RegisterScreenItem{rsItemTransaction=Transaction{tindex=ti}}))
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-> fromMaybe endidx $ findIndex ((==ti) . tindex . rsItemTransaction) displayitems
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endidx = length displayitems
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rsInit _ _ _ = error "init function called with wrong screen type, should not happen"
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rsDraw :: UIState -> [Widget]
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rsDraw UIState{aopts=UIOpts{cliopts_=CliOpts{reportopts_=ropts}}
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,aScreen=RegisterScreen{..}
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,aMode=mode
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} =
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case mode of
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Help -> [helpDialog, maincontent]
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-- Minibuffer e -> [minibuffer e, maincontent]
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_ -> [maincontent]
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where
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toplabel = withAttr ("border" <> "bold") (str $ T.unpack rsAccount)
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<+> togglefilters
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<+> str " transactions"
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<+> borderQueryStr (query_ ropts)
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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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togglefilters =
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case concat [
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if cleared_ ropts then ["cleared"] else []
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,if uncleared_ ropts then ["uncleared"] else []
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,if pending_ ropts then ["pending"] else []
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,if real_ ropts then ["real"] else []
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,if empty_ ropts then [] else ["nonzero"]
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] of
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[] -> str ""
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fs -> withAttr (borderAttr <> "query") (str $ " " ++ intercalate ", " fs)
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cur = str $ case rsList ^. 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 $ rsList ^. listElementsL
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-- query = query_ $ reportopts_ $ cliopts_ opts
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maincontent = 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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-- the date column is fixed width
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datewidth = 10
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-- multi-commodity amounts rendered on one line can be
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-- arbitrarily wide. Give the two amounts as much space as
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-- they need, while reserving a minimum of space for other
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-- columns and whitespace. If they don't get all they need,
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-- allocate it to them proportionally to their maximum widths.
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whitespacewidth = 10 -- inter-column whitespace, fixed width
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minnonamtcolswidth = datewidth + 2 + 2 -- date column plus at least 2 for desc and accts
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maxamtswidth = max 0 (totalwidth - minnonamtcolswidth - whitespacewidth)
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maxchangewidthseen = maximum' $ map (strWidth . rsItemChangeAmount) displayitems
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maxbalwidthseen = maximum' $ map (strWidth . rsItemBalanceAmount) displayitems
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changewidthproportion = fromIntegral maxchangewidthseen / fromIntegral (maxchangewidthseen + maxbalwidthseen)
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maxchangewidth = round $ changewidthproportion * fromIntegral maxamtswidth
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maxbalwidth = maxamtswidth - maxchangewidth
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changewidth = min maxchangewidth maxchangewidthseen
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balwidth = min maxbalwidth maxbalwidthseen
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-- assign the remaining space to the description and accounts columns
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-- maxdescacctswidth = totalwidth - (whitespacewidth - 4) - changewidth - balwidth
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maxdescacctswidth =
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-- trace (show (totalwidth, datewidth, changewidth, balwidth, whitespacewidth)) $
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max 0 (totalwidth - datewidth - changewidth - balwidth - whitespacewidth)
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-- allocating proportionally.
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-- descwidth' = maximum' $ map (strWidth . second6) displayitems
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-- acctswidth' = maximum' $ map (strWidth . third6) displayitems
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-- descwidthproportion = (descwidth' + acctswidth') / descwidth'
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-- maxdescwidth = min (maxdescacctswidth - 7) (maxdescacctswidth / descwidthproportion)
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-- maxacctswidth = maxdescacctswidth - maxdescwidth
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-- descwidth = min maxdescwidth descwidth'
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-- acctswidth = min maxacctswidth acctswidth'
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-- allocating equally.
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descwidth = maxdescacctswidth `div` 2
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acctswidth = maxdescacctswidth - descwidth
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colwidths = (datewidth,descwidth,acctswidth,changewidth,balwidth)
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render $ defaultLayout toplabel bottomlabel $ renderList rsList (rsDrawItem colwidths)
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where
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bottomlabel = case mode of
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Minibuffer ed -> minibuffer ed
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_ -> quickhelp
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quickhelp = borderKeysStr [
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("h", "help")
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,("left", "back")
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,("right", "transaction")
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,("/", "filter")
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,("DEL", "unfilter")
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--,("ESC", "reset")
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,("a", "add")
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,("g", "reload")
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,("q", "quit")
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]
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rsDraw _ = error "draw function called with wrong screen type, should not happen"
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rsDrawItem :: (Int,Int,Int,Int,Int) -> Bool -> RegisterScreenItem -> Widget
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rsDrawItem (datewidth,descwidth,acctswidth,changewidth,balwidth) selected RegisterScreenItem{..} =
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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 rsItemDate) <+>
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str " " <+>
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str (fitString (Just descwidth) (Just descwidth) True True rsItemDescription) <+>
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str " " <+>
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str (fitString (Just acctswidth) (Just acctswidth) True True rsItemOtherAccounts) <+>
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str " " <+>
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withAttr changeattr (str (fitString (Just changewidth) (Just changewidth) True False rsItemChangeAmount)) <+>
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str " " <+>
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withAttr balattr (str (fitString (Just balwidth) (Just balwidth) True False rsItemBalanceAmount))
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where
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changeattr | '-' `elem` rsItemChangeAmount = sel $ "list" <> "amount" <> "decrease"
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| otherwise = sel $ "list" <> "amount" <> "increase"
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balattr | '-' `elem` rsItemBalanceAmount = 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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rsHandle :: UIState -> Event -> EventM (Next UIState)
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rsHandle ui@UIState{
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aScreen=s@RegisterScreen{..}
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,aopts=UIOpts{cliopts_=copts}
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,ajournal=j
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,aMode=mode
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} ev = do
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d <- liftIO getCurrentDay
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case mode of
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Minibuffer ed ->
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case ev of
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EvKey KEsc [] -> continue $ closeMinibuffer ui
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EvKey KEnter [] -> continue $ regenerateScreens j d $ setFilter s $ closeMinibuffer ui
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where s = chomp $ unlines $ getEditContents ed
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ev -> do ed' <- handleEvent ev ed
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continue $ ui{aMode=Minibuffer ed'}
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Help ->
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case ev of
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EvKey (KChar 'q') [] -> halt ui
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_ -> helpHandle ui ev
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Normal ->
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case ev of
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EvKey (KChar 'q') [] -> halt ui
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EvKey KEsc [] -> continue $ resetScreens d ui
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EvKey (KChar c) [] | c `elem` ['h','?'] -> continue $ setMode Help ui
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EvKey (KChar 'g') [] -> liftIO (uiReloadJournalIfChanged copts d j ui) >>= continue
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EvKey (KChar 'a') [] -> suspendAndResume $ clearScreen >> setCursorPosition 0 0 >> add copts j >> uiReloadJournalIfChanged copts d j ui
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EvKey (KChar 'E') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleEmpty ui)
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EvKey (KChar 'C') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleCleared ui)
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EvKey (KChar 'U') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleUncleared ui)
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EvKey (KChar 'R') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleReal ui)
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EvKey (KChar '/') [] -> (continue $ regenerateScreens j d $ showMinibuffer ui)
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EvKey k [] | k `elem` [KBS, KDel] -> (continue $ regenerateScreens j d $ resetFilter ui)
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EvKey (KLeft) [] -> continue $ popScreen ui
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EvKey k [] | k `elem` [KRight, KEnter] -> do
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case listSelectedElement rsList of
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Just (_, RegisterScreenItem{rsItemTransaction=t}) ->
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let
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ts = map rsItemTransaction $ V.toList $ listElements rsList
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numberedts = zip [1..] ts
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i = fromIntegral $ maybe 0 (+1) $ elemIndex t ts -- XXX
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in
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continue $ screenEnter d transactionScreen{tsTransaction=(i,t)
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,tsTransactions=numberedts
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,tsAccount=rsAccount} ui
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Nothing -> continue ui
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-- fall through to the list's event handler (handles [pg]up/down)
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ev -> do newitems <- handleEvent ev rsList
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continue ui{aScreen=s{rsList=newitems}}
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-- continue =<< handleEventLensed ui someLens ev
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where
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-- Encourage a more stable scroll position when toggling list items (cf AccountsScreen.hs)
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scrollTop = vScrollToBeginning $ viewportScroll "register"
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rsHandle _ _ = error "event handler called with wrong screen type, should not happen"
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