hledger/hledger-ui/Hledger/UI/AccountsScreen.hs
2016-06-10 17:54:46 -07:00

315 lines
13 KiB
Haskell

-- The accounts screen, showing accounts and balances like the CLI balance command.
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module Hledger.UI.AccountsScreen
(accountsScreen
,asInit
,asSetSelectedAccount
)
where
import Brick
import Brick.Widgets.List
import Brick.Widgets.Edit
import Brick.Widgets.Border (borderAttr)
import Control.Monad.IO.Class (liftIO)
import Data.List
import Data.Maybe
import Data.Monoid
import qualified Data.Text as T
import Data.Time.Calendar (Day)
import qualified Data.Vector as V
import Graphics.Vty
import Lens.Micro.Platform
import System.Console.ANSI
import System.FilePath (takeFileName)
import Hledger
import Hledger.Cli hiding (progname,prognameandversion,green)
import Hledger.UI.UIOptions
import Hledger.UI.UITypes
import Hledger.UI.UIState
import Hledger.UI.UIUtils
import Hledger.UI.RegisterScreen
import Hledger.UI.ErrorScreen
accountsScreen :: Screen
accountsScreen = AccountsScreen{
sInit = asInit
,sDraw = asDraw
,sHandle = asHandle
,_asList = list "accounts" V.empty 1
,_asSelectedAccount = ""
}
asInit :: Day -> Bool -> UIState -> UIState
asInit d reset ui@UIState{
aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}},
ajournal=j,
aScreen=s@AccountsScreen{}
} =
ui{aopts=uopts', aScreen=s & asList .~ newitems'}
where
newitems = list (Name "accounts") (V.fromList displayitems) 1
-- keep the selection near the last selected account
-- (may need to move to the next leaf account when entering flat mode)
newitems' = listMoveTo selidx newitems
where
selidx = case (reset, listSelectedElement $ s ^. asList) of
(True, _) -> 0
(_, Nothing) -> 0
(_, Just (_,AccountsScreenItem{asItemAccountName=a})) -> fromMaybe (fromMaybe 0 mprefixmatch) mexactmatch
where
mexactmatch = findIndex ((a ==) . asItemAccountName) displayitems
mprefixmatch = findIndex ((a `isAccountNamePrefixOf`) . asItemAccountName) displayitems
uopts' = uopts{cliopts_=copts{reportopts_=ropts'}}
ropts' = ropts {
-- XXX balanceReport doesn't respect this yet
balancetype_=HistoricalBalance
}
q = queryFromOpts d ropts
-- maybe convert balances to market value
convert | value_ ropts' = balanceReportValue j valuedate
| otherwise = id
where
valuedate = fromMaybe d $ queryEndDate False q
-- run the report
(items,_total) = convert $ balanceReport ropts' q j
-- pre-render the list items
displayitem ((fullacct, shortacct, indent), bal) =
AccountsScreenItem{asItemIndentLevel = indent
,asItemAccountName = fullacct
,asItemDisplayAccountName = if flat_ ropts' then fullacct else shortacct
,asItemRenderedAmounts = map showAmountWithoutPrice amts -- like showMixedAmountOneLineWithoutPrice
}
where
Mixed amts = normaliseMixedAmountSquashPricesForDisplay $ stripPrices bal
stripPrices (Mixed as) = Mixed $ map stripprice as where stripprice a = a{aprice=NoPrice}
displayitems = map displayitem items
asInit _ _ _ = error "init function called with wrong screen type, should not happen"
asDraw :: UIState -> [Widget]
asDraw UIState{aopts=UIOpts{cliopts_=CliOpts{reportopts_=ropts}}
,ajournal=j
,aScreen=s@AccountsScreen{}
,aMode=mode
} =
case mode of
Help -> [helpDialog, maincontent]
-- Minibuffer e -> [minibuffer e, maincontent]
_ -> [maincontent]
where
toplabel = files
<+> nonzero
<+> str " accounts"
<+> borderQueryStr querystr
<+> togglefilters
<+> borderDepthStr mdepth
<+> str " ("
<+> cur
<+> str "/"
<+> total
<+> str ")"
files = case journalFilePaths j of
[] -> str ""
f:_ -> withAttr ("border" <> "bold") $ str $ takeFileName f
-- [f,_:[]] -> (withAttr ("border" <> "bold") $ str $ takeFileName f) <+> str " (& 1 included file)"
-- f:fs -> (withAttr ("border" <> "bold") $ str $ takeFileName f) <+> str (" (& " ++ show (length fs) ++ " included files)")
querystr = query_ ropts
mdepth = depth_ ropts
togglefilters =
case concat [
if cleared_ ropts then ["cleared"] else []
,if uncleared_ ropts then ["uncleared"] else []
,if pending_ ropts then ["pending"] else []
,if real_ ropts then ["real"] else []
] of
[] -> str ""
fs -> str " with " <+> withAttr (borderAttr <> "query") (str $ intercalate ", " fs) <+> str " txns"
nonzero | empty_ ropts = str ""
| otherwise = withAttr (borderAttr <> "query") (str " nonzero")
cur = str (case s ^. asList ^. listSelectedL of -- XXX second ^. required here but not below..
Nothing -> "-"
Just i -> show (i + 1))
total = str $ show $ V.length $ s ^. asList . listElementsL
maincontent = Widget Greedy Greedy $ do
c <- getContext
let
availwidth =
-- ltrace "availwidth" $
c^.availWidthL
- 2 -- XXX due to margin ? shouldn't be necessary (cf UIUtils)
displayitems = s ^. asList . listElementsL
maxacctwidthseen =
-- ltrace "maxacctwidthseen" $
V.maximum $
V.map (\AccountsScreenItem{..} -> asItemIndentLevel*2 + textWidth asItemDisplayAccountName) $
-- V.filter (\(indent,_,_,_) -> (indent-1) <= fromMaybe 99999 mdepth) $
displayitems
maxbalwidthseen =
-- ltrace "maxbalwidthseen" $
V.maximum $ V.map (\AccountsScreenItem{..} -> sum (map strWidth asItemRenderedAmounts) + 2 * (length asItemRenderedAmounts - 1)) displayitems
maxbalwidth =
-- ltrace "maxbalwidth" $
max 0 (availwidth - 2 - 4) -- leave 2 whitespace plus least 4 for accts
balwidth =
-- ltrace "balwidth" $
min maxbalwidth maxbalwidthseen
maxacctwidth =
-- ltrace "maxacctwidth" $
availwidth - 2 - balwidth
acctwidth =
-- ltrace "acctwidth" $
min maxacctwidth maxacctwidthseen
-- XXX how to minimise the balance column's jumping around
-- as you change the depth limit ?
colwidths = (acctwidth, balwidth)
render $ defaultLayout toplabel bottomlabel $ renderList (s ^. asList) (asDrawItem colwidths)
where
bottomlabel = case mode of
Minibuffer ed -> minibuffer ed
_ -> quickhelp
quickhelp = borderKeysStr [
("h", "help")
,("right", "register")
,("F", "flat?")
,("-+0123456789", "depth")
--,("/", "filter")
--,("DEL", "unfilter")
--,("ESC", "cancel/top")
,("a", "add")
,("g", "reload")
,("q", "quit")
]
asDraw _ = error "draw function called with wrong screen type, should not happen"
asDrawItem :: (Int,Int) -> Bool -> AccountsScreenItem -> Widget
asDrawItem (acctwidth, balwidth) selected AccountsScreenItem{..} =
Widget Greedy Fixed $ do
-- c <- getContext
-- let showitem = intercalate "\n" . balanceReportItemAsText defreportopts fmt
render $
addamts asItemRenderedAmounts $
str (T.unpack $ fitText (Just acctwidth) (Just acctwidth) True True $ T.replicate (2*asItemIndentLevel) " " <> asItemDisplayAccountName) <+>
str " " <+>
str (balspace asItemRenderedAmounts)
where
balspace as = replicate n ' '
where n = max 0 (balwidth - (sum (map strWidth as) + 2 * (length as - 1)))
addamts :: [String] -> Widget -> Widget
addamts [] w = w
addamts [a] w = (<+> renderamt a) w
-- foldl' :: (b -> a -> b) -> b -> t a -> b
-- foldl' (Widget -> String -> Widget) -> Widget -> [String] -> Widget
addamts (a:as) w = foldl' addamt (addamts [a] w) as
addamt :: Widget -> String -> Widget
addamt w a = ((<+> renderamt a) . (<+> str ", ")) w
renderamt :: String -> Widget
renderamt a | '-' `elem` a = withAttr (sel $ "list" <> "balance" <> "negative") $ str a
| otherwise = withAttr (sel $ "list" <> "balance" <> "positive") $ str a
sel | selected = (<> "selected")
| otherwise = id
asHandle :: UIState -> Event -> EventM (Next UIState)
asHandle ui0@UIState{
aScreen=scr@AccountsScreen{..}
,aopts=UIOpts{cliopts_=copts}
,ajournal=j
,aMode=mode
} ev = do
d <- liftIO getCurrentDay
-- c <- getContext
-- let h = c^.availHeightL
-- moveSel n l = listMoveBy n l
-- save the currently selected account, in case we leave this screen and lose the selection
let
selacct = case listSelectedElement $ scr ^. asList of
Just (_, AccountsScreenItem{..}) -> asItemAccountName
Nothing -> scr ^. asSelectedAccount
ui = ui0{aScreen=scr & asSelectedAccount .~ selacct}
case mode of
Minibuffer ed ->
case ev of
EvKey KEsc [] -> continue $ closeMinibuffer ui
EvKey KEnter [] -> continue $ regenerateScreens j d $ setFilter s $ closeMinibuffer ui
where s = chomp $ unlines $ getEditContents ed
ev -> do ed' <- handleEvent ev ed
continue $ ui{aMode=Minibuffer ed'}
Help ->
case ev of
EvKey (KChar 'q') [] -> halt ui
_ -> helpHandle ui ev
Normal ->
case ev of
EvKey (KChar 'q') [] -> halt ui
-- EvKey (KChar 'l') [MCtrl] -> do
EvKey KEsc [] -> continue $ resetScreens d ui
EvKey (KChar c) [] | c `elem` ['h','?'] -> continue $ setMode Help ui
EvKey (KChar 'g') [] -> liftIO (uiReloadJournalIfChanged copts d j ui) >>= continue
EvKey (KChar 'a') [] -> suspendAndResume $ clearScreen >> setCursorPosition 0 0 >> add copts j >> uiReloadJournalIfChanged copts d j ui
EvKey (KChar '0') [] -> continue $ regenerateScreens j d $ setDepth (Just 0) ui
EvKey (KChar '1') [] -> continue $ regenerateScreens j d $ setDepth (Just 1) ui
EvKey (KChar '2') [] -> continue $ regenerateScreens j d $ setDepth (Just 2) ui
EvKey (KChar '3') [] -> continue $ regenerateScreens j d $ setDepth (Just 3) ui
EvKey (KChar '4') [] -> continue $ regenerateScreens j d $ setDepth (Just 4) ui
EvKey (KChar '5') [] -> continue $ regenerateScreens j d $ setDepth (Just 5) ui
EvKey (KChar '6') [] -> continue $ regenerateScreens j d $ setDepth (Just 6) ui
EvKey (KChar '7') [] -> continue $ regenerateScreens j d $ setDepth (Just 7) ui
EvKey (KChar '8') [] -> continue $ regenerateScreens j d $ setDepth (Just 8) ui
EvKey (KChar '9') [] -> continue $ regenerateScreens j d $ setDepth (Just 9) ui
EvKey (KChar '-') [] -> continue $ regenerateScreens j d $ decDepth ui
EvKey (KChar '_') [] -> continue $ regenerateScreens j d $ decDepth ui
EvKey (KChar c) [] | c `elem` ['+','='] -> continue $ regenerateScreens j d $ incDepth ui
EvKey (KChar 'F') [] -> continue $ regenerateScreens j d $ toggleFlat ui
EvKey (KChar 'E') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleEmpty ui)
EvKey (KChar 'C') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleCleared ui)
EvKey (KChar 'U') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleUncleared ui)
EvKey (KChar 'R') [] -> scrollTop >> (continue $ regenerateScreens j d $ toggleReal ui)
EvKey (KChar '/') [] -> continue $ regenerateScreens j d $ showMinibuffer ui
EvKey k [] | k `elem` [KBS, KDel] -> (continue $ regenerateScreens j d $ resetFilter ui)
EvKey (KLeft) [] -> continue $ popScreen ui
EvKey k [] | k `elem` [KRight, KEnter] -> scrollTopRegister >> continue (screenEnter d scr ui)
where
scr = rsSetAccount selacct registerScreen
-- fall through to the list's event handler (handles up/down)
ev -> do
newitems <- handleEvent ev (scr ^. asList)
continue $ ui{aScreen=scr & asList .~ newitems
& asSelectedAccount .~ selacct
}
-- continue =<< handleEventLensed ui someLens ev
where
-- Encourage a more stable scroll position when toggling list items.
-- We scroll to the top, and the viewport will automatically
-- scroll down just far enough to reveal the selection, which
-- usually leaves it at bottom of screen).
-- XXX better: scroll so selection is in middle of screen ?
scrollTop = vScrollToBeginning $ viewportScroll "accounts"
scrollTopRegister = vScrollToBeginning $ viewportScroll "register"
asHandle _ _ = error "event handler called with wrong screen type, should not happen"
asSetSelectedAccount a s@AccountsScreen{} = s & asSelectedAccount .~ a
asSetSelectedAccount _ s = s