294 lines
12 KiB
Haskell
294 lines
12 KiB
Haskell
{-# LANGUAGE CPP #-}
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{- | UIState operations. -}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RecordWildCards #-}
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module Hledger.UI.UIState
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where
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#if !MIN_VERSION_brick(0,19,0)
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import Brick
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#endif
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import Brick.Widgets.Edit
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import Data.List
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import Data.Text.Zipper (gotoEOL)
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import Data.Time.Calendar (Day)
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import Hledger
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import Hledger.Cli.CliOptions
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import Hledger.UI.UITypes
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import Hledger.UI.UIOptions
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-- | Toggle between showing only unmarked items or all items.
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toggleUnmarked :: UIState -> UIState
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toggleUnmarked ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=reportOptsToggleStatusSomehow Unmarked copts ropts}}}
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-- | Toggle between showing only pending items or all items.
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togglePending :: UIState -> UIState
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togglePending ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=reportOptsToggleStatusSomehow Pending copts ropts}}}
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-- | Toggle between showing only cleared items or all items.
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toggleCleared :: UIState -> UIState
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toggleCleared ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=reportOptsToggleStatusSomehow Cleared copts ropts}}}
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-- TODO testing different status toggle styles
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-- | Generate zero or more indicators of the status filters currently active,
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-- which will be shown comma-separated as part of the indicators list.
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uiShowStatus :: CliOpts -> [Status] -> [String]
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uiShowStatus copts ss =
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case style of
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-- in style 2, instead of "Y, Z" show "not X"
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Just 2 | length ss == numstatuses-1
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-> map (("not "++). showstatus) $ sort $ complement ss -- should be just one
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_ -> map showstatus $ sort ss
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where
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numstatuses = length [minBound..maxBound::Status]
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style = maybeintopt "status-toggles" $ rawopts_ copts
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showstatus Cleared = "cleared"
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showstatus Pending = "pending"
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showstatus Unmarked = "unmarked"
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reportOptsToggleStatusSomehow :: Status -> CliOpts -> ReportOpts -> ReportOpts
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reportOptsToggleStatusSomehow s copts ropts =
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case maybeintopt "status-toggles" $ rawopts_ copts of
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Just 2 -> reportOptsToggleStatus2 s ropts
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Just 3 -> reportOptsToggleStatus3 s ropts
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-- Just 4 -> reportOptsToggleStatus4 s ropts
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-- Just 5 -> reportOptsToggleStatus5 s ropts
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_ -> reportOptsToggleStatus1 s ropts
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-- 1 UPC toggles only X/all
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reportOptsToggleStatus1 s ropts@ReportOpts{statuses_=ss}
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| ss == [s] = ropts{statuses_=[]}
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| otherwise = ropts{statuses_=[s]}
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-- 2 UPC cycles X/not-X/all
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-- repeatedly pressing X cycles:
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-- [] U [u]
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-- [u] U [pc]
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-- [pc] U []
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-- pressing Y after first or second step starts new cycle:
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-- [u] P [p]
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-- [pc] P [p]
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reportOptsToggleStatus2 s ropts@ReportOpts{statuses_=ss}
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| ss == [s] = ropts{statuses_=complement [s]}
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| ss == complement [s] = ropts{statuses_=[]}
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| otherwise = ropts{statuses_=[s]} -- XXX assume only three values
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-- 3 UPC toggles each X
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reportOptsToggleStatus3 s ropts@ReportOpts{statuses_=ss}
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| s `elem` ss = ropts{statuses_=filter (/= s) ss}
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| otherwise = ropts{statuses_=simplifyStatuses (s:ss)}
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-- 4 upc sets X, UPC sets not-X
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--reportOptsToggleStatus4 s ropts@ReportOpts{statuses_=ss}
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-- | s `elem` ss = ropts{statuses_=filter (/= s) ss}
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-- | otherwise = ropts{statuses_=simplifyStatuses (s:ss)}
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--
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-- 5 upc toggles X, UPC toggles not-X
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--reportOptsToggleStatus5 s ropts@ReportOpts{statuses_=ss}
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-- | s `elem` ss = ropts{statuses_=filter (/= s) ss}
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-- | otherwise = ropts{statuses_=simplifyStatuses (s:ss)}
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-- | Given a list of unique enum values, list the other possible values of that enum.
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complement :: (Bounded a, Enum a, Eq a) => [a] -> [a]
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complement = ([minBound..maxBound] \\)
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--
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-- | Toggle between showing all and showing only nonempty (more precisely, nonzero) items.
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toggleEmpty :: UIState -> UIState
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toggleEmpty ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=toggleEmpty ropts}}}
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where
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toggleEmpty ropts = ropts{empty_=not $ empty_ ropts}
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-- | Toggle between flat and tree mode. If in the third "default" mode, go to flat mode.
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toggleFlat :: UIState -> UIState
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toggleFlat ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=toggleFlatMode ropts}}}
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where
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toggleFlatMode ropts@ReportOpts{accountlistmode_=ALFlat} = ropts{accountlistmode_=ALTree}
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toggleFlatMode ropts = ropts{accountlistmode_=ALFlat}
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-- | Toggle between historical balances and period balances.
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toggleHistorical :: UIState -> UIState
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toggleHistorical ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{balancetype_=b}}}}
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where
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b | balancetype_ ropts == HistoricalBalance = PeriodChange
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| otherwise = HistoricalBalance
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-- | Toggle between showing all and showing only real (non-virtual) items.
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toggleReal :: UIState -> UIState
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toggleReal ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=toggleReal ropts}}}
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where
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toggleReal ropts = ropts{real_=not $ real_ ropts}
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-- | Toggle the ignoring of balance assertions.
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toggleIgnoreBalanceAssertions :: UIState -> UIState
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toggleIgnoreBalanceAssertions ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{}}} =
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ui{aopts=uopts{cliopts_=copts{ignore_assertions_=not $ ignore_assertions_ copts}}}
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-- | Step through larger report periods, up to all.
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growReportPeriod :: Day -> UIState -> UIState
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growReportPeriod _d ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{period_=periodGrow $ period_ ropts}}}}
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-- | Step through smaller report periods, down to a day.
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shrinkReportPeriod :: Day -> UIState -> UIState
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shrinkReportPeriod d ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{period_=periodShrink d $ period_ ropts}}}}
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-- | Step the report start/end dates to the next period of same duration,
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-- remaining inside the given enclosing span.
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nextReportPeriod :: DateSpan -> UIState -> UIState
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nextReportPeriod enclosingspan ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts@ReportOpts{period_=p}}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{period_=periodNextIn enclosingspan p}}}}
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-- | Step the report start/end dates to the next period of same duration,
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-- remaining inside the given enclosing span.
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previousReportPeriod :: DateSpan -> UIState -> UIState
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previousReportPeriod enclosingspan ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts@ReportOpts{period_=p}}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{period_=periodPreviousIn enclosingspan p}}}}
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-- | If a standard report period is set, step it forward/backward if needed so that
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-- it encloses the given date.
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moveReportPeriodToDate :: Day -> UIState -> UIState
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moveReportPeriodToDate d ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts@ReportOpts{period_=p}}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{period_=periodMoveTo d p}}}}
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-- | Get the report period.
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reportPeriod :: UIState -> Period
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reportPeriod UIState{aopts=UIOpts{cliopts_=CliOpts{reportopts_=ReportOpts{period_=p}}}} =
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p
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-- | Set the report period.
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setReportPeriod :: Period -> UIState -> UIState
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setReportPeriod p ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{period_=p}}}}
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-- | Apply a new filter query.
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setFilter :: String -> UIState -> UIState
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setFilter s ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{query_=s}}}}
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-- | Clear all filters/flags.
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resetFilter :: UIState -> UIState
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resetFilter ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{
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accountlistmode_=ALTree
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,empty_=True
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,statuses_=[]
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,real_=False
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,query_=""
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--,period_=PeriodAll
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}}}}
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resetDepth :: UIState -> UIState
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resetDepth ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}} =
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ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{depth_=Nothing}}}}
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-- | Get the maximum account depth in the current journal.
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maxDepth :: UIState -> Int
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maxDepth UIState{ajournal=j} = maximum $ map accountNameLevel $ journalAccountNames j
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-- | Decrement the current depth limit towards 0. If there was no depth limit,
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-- set it to one less than the maximum account depth.
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decDepth :: UIState -> UIState
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decDepth ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts@ReportOpts{..}}}}
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= ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{depth_=dec depth_}}}}
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where
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dec (Just d) = Just $ max 0 (d-1)
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dec Nothing = Just $ maxDepth ui - 1
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-- | Increment the current depth limit. If this makes it equal to the
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-- the maximum account depth, remove the depth limit.
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incDepth :: UIState -> UIState
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incDepth ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts@ReportOpts{..}}}}
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= ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{depth_=inc depth_}}}}
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where
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inc (Just d) | d < (maxDepth ui - 1) = Just $ d+1
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inc _ = Nothing
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-- | Set the current depth limit to the specified depth, or remove the depth limit.
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-- Also remove the depth limit if the specified depth is greater than the current
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-- maximum account depth. If the specified depth is negative, reset the depth limit
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-- to whatever was specified at uiartup.
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setDepth :: Maybe Int -> UIState -> UIState
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setDepth mdepth ui@UIState{aopts=uopts@UIOpts{cliopts_=copts@CliOpts{reportopts_=ropts}}}
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= ui{aopts=uopts{cliopts_=copts{reportopts_=ropts{depth_=mdepth'}}}}
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where
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mdepth' = case mdepth of
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Nothing -> Nothing
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Just d | d < 0 -> depth_ ropts
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| d >= maxDepth ui -> Nothing
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| otherwise -> mdepth
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getDepth :: UIState -> Maybe Int
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getDepth UIState{aopts=UIOpts{cliopts_=CliOpts{reportopts_=ropts}}} = depth_ ropts
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-- | Open the minibuffer, setting its content to the current query with the cursor at the end.
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showMinibuffer :: UIState -> UIState
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showMinibuffer ui = setMode (Minibuffer e) ui
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where
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#if MIN_VERSION_brick(0,19,0)
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e = applyEdit gotoEOL $ editor MinibufferEditor (Just 1) oldq
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#else
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e = applyEdit gotoEOL $ editor MinibufferEditor (str . unlines) (Just 1) oldq
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#endif
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oldq = query_ $ reportopts_ $ cliopts_ $ aopts ui
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-- | Close the minibuffer, discarding any edit in progress.
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closeMinibuffer :: UIState -> UIState
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closeMinibuffer = setMode Normal
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setMode :: Mode -> UIState -> UIState
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setMode m ui = ui{aMode=m}
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-- | Regenerate the content for the current and previous screens, from a new journal and current date.
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regenerateScreens :: Journal -> Day -> UIState -> UIState
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regenerateScreens j d ui@UIState{aScreen=s,aPrevScreens=ss} =
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-- XXX clumsy due to entanglement of UIState and Screen.
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-- sInit operates only on an appstate's current screen, so
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-- remove all the screens from the appstate and then add them back
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-- one at a time, regenerating as we go.
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let
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first:rest = reverse $ s:ss :: [Screen]
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ui0 = ui{ajournal=j, aScreen=first, aPrevScreens=[]} :: UIState
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ui1 = (sInit first) d False ui0 :: UIState
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ui2 = foldl' (\ui s -> (sInit s) d False $ pushScreen s ui) ui1 rest :: UIState
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in
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ui2
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pushScreen :: Screen -> UIState -> UIState
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pushScreen scr ui = ui{aPrevScreens=(aScreen ui:aPrevScreens ui)
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,aScreen=scr
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}
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popScreen :: UIState -> UIState
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popScreen ui@UIState{aPrevScreens=s:ss} = ui{aScreen=s, aPrevScreens=ss}
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popScreen ui = ui
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resetScreens :: Day -> UIState -> UIState
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resetScreens d ui@UIState{aScreen=s,aPrevScreens=ss} =
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(sInit topscreen) d True $ resetDepth $ resetFilter $ closeMinibuffer ui{aScreen=topscreen, aPrevScreens=[]}
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where
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topscreen = case ss of _:_ -> last ss
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[] -> s
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-- | Enter a new screen, saving the old screen & state in the
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-- navigation history and initialising the new screen's state.
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screenEnter :: Day -> Screen -> UIState -> UIState
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screenEnter d scr ui = (sInit scr) d True $
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pushScreen scr
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ui
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