    {-# LANGUAGE DeriveFunctor #-}
    {-# LANGUAGE TemplateHaskell #-}
    {-# LANGUAGE MultiParamTypeClasses #-}
    {-# LANGUAGE DeriveGeneric #-}
    {-# LANGUAGE DeriveAnyClass #-}
    module Brick.Types.Internal
      ( ScrollRequest(..)
      , VisibilityRequest(..)
      , vrPositionL
      , vrSizeL
      , Location(..)
      , locL
      , origin
      , TerminalLocation(..)
      , Viewport(..)
      , ViewportType(..)
      , RenderState(..)
      , Direction(..)
      , CursorLocation(..)
      , cursorLocationL
      , cursorLocationNameL
      , Context(..)
      , EventState(..)
      , EventRO(..)
      , Next(..)
      , Result(..)
      , Extent(..)
      , Edges(..)
      , eTopL, eBottomL, eRightL, eLeftL
      , BorderSegment(..)
      , bsAcceptL, bsOfferL, bsDrawL
      , DynBorder(..)
      , dbStyleL, dbAttrL, dbSegmentsL
      , CacheInvalidateRequest(..)
      , BrickEvent(..)

      , rsScrollRequestsL
      , viewportMapL
      , clickableNamesL
      , renderCacheL
      , observedNamesL
      , vpSize
      , vpLeft
      , vpTop
      , imageL
      , cursorsL
      , extentsL
      , bordersL
      , visibilityRequestsL
      , emptyResult
      )
    where

    #if !MIN_VERSION_base(4,8,0)
    import Data.Monoid
    #endif

    import Lens.Micro (_1, _2, Lens')
    import Lens.Micro.TH (makeLenses)
    import qualified Data.Set as S
    import qualified Data.Map as M
    import Graphics.Vty (Vty, Event, Button, Modifier, DisplayRegion, Image, Attr, emptyImage)
    import GHC.Generics
    import Control.DeepSeq (NFData)

    import Brick.BorderMap (BorderMap)
    import qualified Brick.BorderMap as BM
    import Brick.Types.Common
    import Brick.Types.TH
    import Brick.AttrMap (AttrName, AttrMap)
    import Brick.Widgets.Border.Style (BorderStyle)

    data ScrollRequest = HScrollBy Int
                       | HScrollPage Direction
                       | HScrollToBeginning
                       | HScrollToEnd
                       | VScrollBy Int
                       | VScrollPage Direction
                       | VScrollToBeginning
                       | VScrollToEnd
                       | SetTop Int
                       | SetLeft Int
                       deriving (ReadPrec [ScrollRequest]
    ReadPrec ScrollRequest
    Int -> ReadS ScrollRequest
    ReadS [ScrollRequest]
    (Int -> ReadS ScrollRequest)
    -> ReadS [ScrollRequest]
    -> ReadPrec ScrollRequest
    -> ReadPrec [ScrollRequest]
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    readListPrec :: ReadPrec [ScrollRequest]
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    Read, Int -> ScrollRequest -> ShowS
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    $cto :: forall x. Rep ScrollRequest x -> ScrollRequest
    $cfrom :: forall x. ScrollRequest -> Rep ScrollRequest x
    Generic, ScrollRequest -> ()
    (ScrollRequest -> ()) -> NFData ScrollRequest
    forall a. (a -> ()) -> NFData a
    rnf :: ScrollRequest -> ()
    $crnf :: ScrollRequest -> ()
    NFData)

    data VisibilityRequest =
        VR { VisibilityRequest -> Location
    vrPosition :: Location
           , VisibilityRequest -> DisplayRegion
    vrSize :: DisplayRegion
           }
           deriving (Int -> VisibilityRequest -> ShowS
    [VisibilityRequest] -> ShowS
    VisibilityRequest -> String
    (Int -> VisibilityRequest -> ShowS)
    -> (VisibilityRequest -> String)
    -> ([VisibilityRequest] -> ShowS)
    -> Show VisibilityRequest
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    /= :: VisibilityRequest -> VisibilityRequest -> Bool
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    -- | Describes the state of a viewport as it appears as its most recent
    -- rendering.
    data Viewport =
        VP { Viewport -> Int
    _vpLeft :: Int
           -- ^ The column offset of left side of the viewport.
           , Viewport -> Int
    _vpTop :: Int
           -- ^ The row offset of the top of the viewport.
           , Viewport -> DisplayRegion
    _vpSize :: DisplayRegion
           -- ^ The size of the viewport.
           }
           deriving (Int -> Viewport -> ShowS
    [Viewport] -> ShowS
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    (Int -> Viewport -> ShowS)
    -> (Viewport -> String) -> ([Viewport] -> ShowS) -> Show Viewport
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    -- | The type of viewports that indicates the direction(s) in which a
    -- viewport is scrollable.
    data ViewportType = Vertical
                      -- ^ Viewports of this type are scrollable only vertically.
                      | Horizontal
                      -- ^ Viewports of this type are scrollable only horizontally.
                      | Both
                      -- ^ Viewports of this type are scrollable vertically and horizontally.
                      deriving (Int -> ViewportType -> ShowS
    [ViewportType] -> ShowS
    ViewportType -> String
    (Int -> ViewportType -> ShowS)
    -> (ViewportType -> String)
    -> ([ViewportType] -> ShowS)
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    showList :: [ViewportType] -> ShowS
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    /= :: ViewportType -> ViewportType -> Bool
    $c/= :: ViewportType -> ViewportType -> Bool
    == :: ViewportType -> ViewportType -> Bool
    $c== :: ViewportType -> ViewportType -> Bool
    Eq)

    data CacheInvalidateRequest n =
        InvalidateSingle n
        | InvalidateEntire
        deriving (Eq (CacheInvalidateRequest n)
    Eq (CacheInvalidateRequest n) =>
    (CacheInvalidateRequest n -> CacheInvalidateRequest n -> Ordering)
    -> (CacheInvalidateRequest n -> CacheInvalidateRequest n -> Bool)
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    data EventState n = ES { EventState n -> [(n, ScrollRequest)]
    esScrollRequests :: [(n, ScrollRequest)]
                           , EventState n -> Set (CacheInvalidateRequest n)
    cacheInvalidateRequests :: S.Set (CacheInvalidateRequest n)
                           }

    -- | An extent of a named area: its size, location, and origin.
    data Extent n = Extent { Extent n -> n
    extentName      :: n
                           , Extent n -> Location
    extentUpperLeft :: Location
                           , Extent n -> DisplayRegion
    extentSize      :: (Int, Int)
                           , Extent n -> Location
    extentOffset    :: Location
                           }
                           deriving (Int -> Extent n -> ShowS
    [Extent n] -> ShowS
    Extent n -> String
    (Int -> Extent n -> ShowS)
    -> (Extent n -> String) -> ([Extent n] -> ShowS) -> Show (Extent n)
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    -- | The type of actions to take upon completion of an event handler.
    data Next a = Continue a
                | SuspendAndResume (IO a)
                | Halt a
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    Functor

    -- | Scrolling direction.
    data Direction = Up
                   -- ^ Up/left
                   | Down
                   -- ^ Down/right
                   deriving (Int -> Direction -> ShowS
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    -- | The class of types that behave like terminal locations.
    class TerminalLocation a where
        -- | Get the column out of the value
        locationColumnL :: Lens' a Int
        locationColumn :: a -> Int

        -- | Get the row out of the value
        locationRowL :: Lens' a Int
        locationRow :: a -> Int

    instance TerminalLocation Location where
        locationColumnL :: (Int -> f Int) -> Location -> f Location
    locationColumnL = (Int -> f Int) -> Location -> f Location
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    _1
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    t) = DisplayRegion -> Int
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    locationRowL = (Int -> f Int) -> Location -> f Location
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    locationRow (Location t :: DisplayRegion
    t) = DisplayRegion -> Int
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    t

    -- | A cursor location.  These are returned by the rendering process.
    data CursorLocation n =
        CursorLocation { CursorLocation n -> Location
    cursorLocation :: !Location
                       -- ^ The location
                       , CursorLocation n -> Maybe n
    cursorLocationName :: !(Maybe n)
                       -- ^ The name of the widget associated with the location
                       }
                       deriving (ReadPrec [CursorLocation n]
    ReadPrec (CursorLocation n)
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    -- | A border character has four segments, one extending in each direction
    -- (horizontally and vertically) from the center of the character.
    data BorderSegment = BorderSegment
        { BorderSegment -> Bool
    bsAccept :: Bool
        -- ^ Would this segment be willing to be drawn if a neighbor wanted to
        -- connect to it?
        , BorderSegment -> Bool
    bsOffer :: Bool
        -- ^ Does this segment want to connect to its neighbor?
        , BorderSegment -> Bool
    bsDraw :: Bool
        -- ^ Should this segment be represented visually?
        } deriving (BorderSegment -> BorderSegment -> Bool
    (BorderSegment -> BorderSegment -> Bool)
    -> (BorderSegment -> BorderSegment -> Bool) -> Eq BorderSegment
    forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
    /= :: BorderSegment -> BorderSegment -> Bool
    $c/= :: BorderSegment -> BorderSegment -> Bool
    == :: BorderSegment -> BorderSegment -> Bool
    $c== :: BorderSegment -> BorderSegment -> Bool
    Eq, Eq BorderSegment
    Eq BorderSegment =>
    (BorderSegment -> BorderSegment -> Ordering)
    -> (BorderSegment -> BorderSegment -> Bool)
    -> (BorderSegment -> BorderSegment -> Bool)
    -> (BorderSegment -> BorderSegment -> Bool)
    -> (BorderSegment -> BorderSegment -> Bool)
    -> (BorderSegment -> BorderSegment -> BorderSegment)
    -> (BorderSegment -> BorderSegment -> BorderSegment)
    -> Ord BorderSegment
    BorderSegment -> BorderSegment -> Bool
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    forall a.
    Eq a =>
    (a -> a -> Ordering)
    -> (a -> a -> Bool)
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    -> (a -> a -> Bool)
    -> (a -> a -> Bool)
    -> (a -> a -> a)
    -> (a -> a -> a)
    -> Ord a
    min :: BorderSegment -> BorderSegment -> BorderSegment
    $cmin :: BorderSegment -> BorderSegment -> BorderSegment
    max :: BorderSegment -> BorderSegment -> BorderSegment
    $cmax :: BorderSegment -> BorderSegment -> BorderSegment
    >= :: BorderSegment -> BorderSegment -> Bool
    $c>= :: BorderSegment -> BorderSegment -> Bool
    > :: BorderSegment -> BorderSegment -> Bool
    $c> :: BorderSegment -> BorderSegment -> Bool
    <= :: BorderSegment -> BorderSegment -> Bool
    $c<= :: BorderSegment -> BorderSegment -> Bool
    < :: BorderSegment -> BorderSegment -> Bool
    $c< :: BorderSegment -> BorderSegment -> Bool
    compare :: BorderSegment -> BorderSegment -> Ordering
    $ccompare :: BorderSegment -> BorderSegment -> Ordering
    $cp1Ord :: Eq BorderSegment
    Ord, ReadPrec [BorderSegment]
    ReadPrec BorderSegment
    Int -> ReadS BorderSegment
    ReadS [BorderSegment]
    (Int -> ReadS BorderSegment)
    -> ReadS [BorderSegment]
    -> ReadPrec BorderSegment
    -> ReadPrec [BorderSegment]
    -> Read BorderSegment
    forall a.
    (Int -> ReadS a)
    -> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
    readListPrec :: ReadPrec [BorderSegment]
    $creadListPrec :: ReadPrec [BorderSegment]
    readPrec :: ReadPrec BorderSegment
    $creadPrec :: ReadPrec BorderSegment
    readList :: ReadS [BorderSegment]
    $creadList :: ReadS [BorderSegment]
    readsPrec :: Int -> ReadS BorderSegment
    $creadsPrec :: Int -> ReadS BorderSegment
    Read, Int -> BorderSegment -> ShowS
    [BorderSegment] -> ShowS
    BorderSegment -> String
    (Int -> BorderSegment -> ShowS)
    -> (BorderSegment -> String)
    -> ([BorderSegment] -> ShowS)
    -> Show BorderSegment
    forall a.
    (Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
    showList :: [BorderSegment] -> ShowS
    $cshowList :: [BorderSegment] -> ShowS
    show :: BorderSegment -> String
    $cshow :: BorderSegment -> String
    showsPrec :: Int -> BorderSegment -> ShowS
    $cshowsPrec :: Int -> BorderSegment -> ShowS
    Show, (forall x. BorderSegment -> Rep BorderSegment x)
    -> (forall x. Rep BorderSegment x -> BorderSegment)
    -> Generic BorderSegment
    forall x. Rep BorderSegment x -> BorderSegment
    forall x. BorderSegment -> Rep BorderSegment x
    forall a.
    (forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
    $cto :: forall x. Rep BorderSegment x -> BorderSegment
    $cfrom :: forall x. BorderSegment -> Rep BorderSegment x
    Generic, BorderSegment -> ()
    (BorderSegment -> ()) -> NFData BorderSegment
    forall a. (a -> ()) -> NFData a
    rnf :: BorderSegment -> ()
    $crnf :: BorderSegment -> ()
    NFData)

    suffixLenses ''BorderSegment

    -- | Information about how to redraw a dynamic border character when it abuts
    -- another dynamic border character.
    data DynBorder = DynBorder
        { DynBorder -> BorderStyle
    dbStyle :: BorderStyle
        -- ^ The 'Char's to use when redrawing the border. Also used to filter
        -- connections: only dynamic borders with equal 'BorderStyle's will connect
        -- to each other.
        , DynBorder -> Attr
    dbAttr :: Attr
        -- ^ What 'Attr' to use to redraw the border character. Also used to filter
        -- connections: only dynamic borders with equal 'Attr's will connect to
        -- each other.
        , DynBorder -> Edges BorderSegment
    dbSegments :: Edges BorderSegment
        } deriving (DynBorder -> DynBorder -> Bool
    (DynBorder -> DynBorder -> Bool)
    -> (DynBorder -> DynBorder -> Bool) -> Eq DynBorder
    forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
    /= :: DynBorder -> DynBorder -> Bool
    $c/= :: DynBorder -> DynBorder -> Bool
    == :: DynBorder -> DynBorder -> Bool
    $c== :: DynBorder -> DynBorder -> Bool
    Eq, ReadPrec [DynBorder]
    ReadPrec DynBorder
    Int -> ReadS DynBorder
    ReadS [DynBorder]
    (Int -> ReadS DynBorder)
    -> ReadS [DynBorder]
    -> ReadPrec DynBorder
    -> ReadPrec [DynBorder]
    -> Read DynBorder
    forall a.
    (Int -> ReadS a)
    -> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
    readListPrec :: ReadPrec [DynBorder]
    $creadListPrec :: ReadPrec [DynBorder]
    readPrec :: ReadPrec DynBorder
    $creadPrec :: ReadPrec DynBorder
    readList :: ReadS [DynBorder]
    $creadList :: ReadS [DynBorder]
    readsPrec :: Int -> ReadS DynBorder
    $creadsPrec :: Int -> ReadS DynBorder
    Read, Int -> DynBorder -> ShowS
    [DynBorder] -> ShowS
    DynBorder -> String
    (Int -> DynBorder -> ShowS)
    -> (DynBorder -> String)
    -> ([DynBorder] -> ShowS)
    -> Show DynBorder
    forall a.
    (Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
    showList :: [DynBorder] -> ShowS
    $cshowList :: [DynBorder] -> ShowS
    show :: DynBorder -> String
    $cshow :: DynBorder -> String
    showsPrec :: Int -> DynBorder -> ShowS
    $cshowsPrec :: Int -> DynBorder -> ShowS
    Show, (forall x. DynBorder -> Rep DynBorder x)
    -> (forall x. Rep DynBorder x -> DynBorder) -> Generic DynBorder
    forall x. Rep DynBorder x -> DynBorder
    forall x. DynBorder -> Rep DynBorder x
    forall a.
    (forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
    $cto :: forall x. Rep DynBorder x -> DynBorder
    $cfrom :: forall x. DynBorder -> Rep DynBorder x
    Generic, DynBorder -> ()
    (DynBorder -> ()) -> NFData DynBorder
    forall a. (a -> ()) -> NFData a
    rnf :: DynBorder -> ()
    $crnf :: DynBorder -> ()
    NFData)

    suffixLenses ''DynBorder

    -- | The type of result returned by a widget's rendering function. The
    -- result provides the image, cursor positions, and visibility requests
    -- that resulted from the rendering process.
    data Result n =
        Result { Result n -> Image
    image :: Image
               -- ^ The final rendered image for a widget
               , Result n -> [CursorLocation n]
    cursors :: [CursorLocation n]
               -- ^ The list of reported cursor positions for the
               -- application to choose from
               , Result n -> [VisibilityRequest]
    visibilityRequests :: [VisibilityRequest]
               -- ^ The list of visibility requests made by widgets rendered
               -- while rendering this one (used by viewports)
               , Result n -> [Extent n]
    extents :: [Extent n]
               -- Programmer's note: we don't try to maintain the invariant that
               -- the size of the borders closely matches the size of the 'image'
               -- field. Most widgets don't need to care about borders, and so they
               -- use the empty 'BorderMap' that has a degenerate rectangle. Only
               -- border-drawing widgets and the hbox/vbox stuff try to set this
               -- carefully. Even then, in the boxes, we only make sure that the
               -- 'BorderMap' is no larger than the entire concatenation of boxes,
               -- and it's certainly possible for it to be smaller. (Resizing
               -- 'BorderMap's is lossy, so we try to do it as little as possible.)
               -- If you're writing a widget, this should make it easier for you to
               -- do so; but beware this lack of invariant if you are consuming
               -- widgets.
               , Result n -> BorderMap DynBorder
    borders :: BorderMap DynBorder
               -- ^ Places where we may rewrite the edge of the image when
               -- placing this widget next to another one.
               }
               deriving (Int -> Result n -> ShowS
    [Result n] -> ShowS
    Result n -> String
    (Int -> Result n -> ShowS)
    -> (Result n -> String) -> ([Result n] -> ShowS) -> Show (Result n)
    forall n. Show n => Int -> Result n -> ShowS
    forall n. Show n => [Result n] -> ShowS
    forall n. Show n => Result n -> String
    forall a.
    (Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
    showList :: [Result n] -> ShowS
    $cshowList :: forall n. Show n => [Result n] -> ShowS
    show :: Result n -> String
    $cshow :: forall n. Show n => Result n -> String
    showsPrec :: Int -> Result n -> ShowS
    $cshowsPrec :: forall n. Show n => Int -> Result n -> ShowS
    Show, ReadPrec [Result n]
    ReadPrec (Result n)
    Int -> ReadS (Result n)
    ReadS [Result n]
    (Int -> ReadS (Result n))
    -> ReadS [Result n]
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    -> Read (Result n)
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    forall a.
    (Int -> ReadS a)
    -> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
    readListPrec :: ReadPrec [Result n]
    $creadListPrec :: forall n. Read n => ReadPrec [Result n]
    readPrec :: ReadPrec (Result n)
    $creadPrec :: forall n. Read n => ReadPrec (Result n)
    readList :: ReadS [Result n]
    $creadList :: forall n. Read n => ReadS [Result n]
    readsPrec :: Int -> ReadS (Result n)
    $creadsPrec :: forall n. Read n => Int -> ReadS (Result n)
    Read, (forall x. Result n -> Rep (Result n) x)
    -> (forall x. Rep (Result n) x -> Result n) -> Generic (Result n)
    forall x. Rep (Result n) x -> Result n
    forall x. Result n -> Rep (Result n) x
    forall a.
    (forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
    forall n x. Rep (Result n) x -> Result n
    forall n x. Result n -> Rep (Result n) x
    $cto :: forall n x. Rep (Result n) x -> Result n
    $cfrom :: forall n x. Result n -> Rep (Result n) x
    Generic, Result n -> ()
    (Result n -> ()) -> NFData (Result n)
    forall n. NFData n => Result n -> ()
    forall a. (a -> ()) -> NFData a
    rnf :: Result n -> ()
    $crnf :: forall n. NFData n => Result n -> ()
    NFData)

    suffixLenses ''Result

    emptyResult :: Result n
    emptyResult :: Result n
    emptyResult = Image
    -> [CursorLocation n]
    -> [VisibilityRequest]
    -> [Extent n]
    -> BorderMap DynBorder
    -> Result n
    forall n.
    Image
    -> [CursorLocation n]
    -> [VisibilityRequest]
    -> [Extent n]
    -> BorderMap DynBorder
    -> Result n
    Result Image
    emptyImage [] [] [] BorderMap DynBorder
    forall a. BorderMap a
    BM.empty

    -- | The type of events.
    data BrickEvent n e = VtyEvent Event
                        -- ^ The event was a Vty event.
                        | AppEvent e
                        -- ^ The event was an application event.
                        | MouseDown n Button [Modifier] Location
                        -- ^ A mouse-down event on the specified region was
                        -- received. The 'n' value is the resource name of
                        -- the clicked widget (see 'clickable').
                        | MouseUp n (Maybe Button) Location
                        -- ^ A mouse-up event on the specified region was
                        -- received. The 'n' value is the resource name of
                        -- the clicked widget (see 'clickable').
                        deriving (Int -> BrickEvent n e -> ShowS
    [BrickEvent n e] -> ShowS
    BrickEvent n e -> String
    (Int -> BrickEvent n e -> ShowS)
    -> (BrickEvent n e -> String)
    -> ([BrickEvent n e] -> ShowS)
    -> Show (BrickEvent n e)
    forall a.
    (Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
    forall n e. (Show e, Show n) => Int -> BrickEvent n e -> ShowS
    forall n e. (Show e, Show n) => [BrickEvent n e] -> ShowS
    forall n e. (Show e, Show n) => BrickEvent n e -> String
    showList :: [BrickEvent n e] -> ShowS
    $cshowList :: forall n e. (Show e, Show n) => [BrickEvent n e] -> ShowS
    show :: BrickEvent n e -> String
    $cshow :: forall n e. (Show e, Show n) => BrickEvent n e -> String
    showsPrec :: Int -> BrickEvent n e -> ShowS
    $cshowsPrec :: forall n e. (Show e, Show n) => Int -> BrickEvent n e -> ShowS
    Show, BrickEvent n e -> BrickEvent n e -> Bool
    (BrickEvent n e -> BrickEvent n e -> Bool)
    -> (BrickEvent n e -> BrickEvent n e -> Bool)
    -> Eq (BrickEvent n e)
    forall a. (a -> a -> Bool) -> (a -> a -> Bool) -> Eq a
    forall n e.
    (Eq e, Eq n) =>
    BrickEvent n e -> BrickEvent n e -> Bool
    /= :: BrickEvent n e -> BrickEvent n e -> Bool
    $c/= :: forall n e.
    (Eq e, Eq n) =>
    BrickEvent n e -> BrickEvent n e -> Bool
    == :: BrickEvent n e -> BrickEvent n e -> Bool
    $c== :: forall n e.
    (Eq e, Eq n) =>
    BrickEvent n e -> BrickEvent n e -> Bool
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    (BrickEvent n e -> BrickEvent n e -> Ordering)
    -> (BrickEvent n e -> BrickEvent n e -> Bool)
    -> (BrickEvent n e -> BrickEvent n e -> Bool)
    -> (BrickEvent n e -> BrickEvent n e -> Bool)
    -> (BrickEvent n e -> BrickEvent n e -> Bool)
    -> (BrickEvent n e -> BrickEvent n e -> BrickEvent n e)
    -> (BrickEvent n e -> BrickEvent n e -> BrickEvent n e)
    -> Ord (BrickEvent n e)
    BrickEvent n e -> BrickEvent n e -> Bool
    BrickEvent n e -> BrickEvent n e -> Ordering
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    forall a.
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    (a -> a -> Ordering)
    -> (a -> a -> Bool)
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    -> (a -> a -> a)
    -> Ord a
    forall n e. (Ord e, Ord n) => Eq (BrickEvent n e)
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    (Ord e, Ord n) =>
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    forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> BrickEvent n e
    min :: BrickEvent n e -> BrickEvent n e -> BrickEvent n e
    $cmin :: forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> BrickEvent n e
    max :: BrickEvent n e -> BrickEvent n e -> BrickEvent n e
    $cmax :: forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> BrickEvent n e
    >= :: BrickEvent n e -> BrickEvent n e -> Bool
    $c>= :: forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> Bool
    > :: BrickEvent n e -> BrickEvent n e -> Bool
    $c> :: forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> Bool
    <= :: BrickEvent n e -> BrickEvent n e -> Bool
    $c<= :: forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> Bool
    < :: BrickEvent n e -> BrickEvent n e -> Bool
    $c< :: forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> Bool
    compare :: BrickEvent n e -> BrickEvent n e -> Ordering
    $ccompare :: forall n e.
    (Ord e, Ord n) =>
    BrickEvent n e -> BrickEvent n e -> Ordering
    $cp1Ord :: forall n e. (Ord e, Ord n) => Eq (BrickEvent n e)
    Ord)

    data RenderState n =
        RS { RenderState n -> Map n Viewport
    viewportMap :: M.Map n Viewport
           , RenderState n -> [(n, ScrollRequest)]
    rsScrollRequests :: [(n, ScrollRequest)]
           , RenderState n -> Set n
    observedNames :: !(S.Set n)
           , RenderState n -> Map n (Result n)
    renderCache :: M.Map n (Result n)
           , RenderState n -> [n]
    clickableNames :: [n]
           } deriving (ReadPrec [RenderState n]
    ReadPrec (RenderState n)
    Int -> ReadS (RenderState n)
    ReadS [RenderState n]
    (Int -> ReadS (RenderState n))
    -> ReadS [RenderState n]
    -> ReadPrec (RenderState n)
    -> ReadPrec [RenderState n]
    -> Read (RenderState n)
    forall n. (Ord n, Read n) => ReadPrec [RenderState n]
    forall n. (Ord n, Read n) => ReadPrec (RenderState n)
    forall n. (Ord n, Read n) => Int -> ReadS (RenderState n)
    forall n. (Ord n, Read n) => ReadS [RenderState n]
    forall a.
    (Int -> ReadS a)
    -> ReadS [a] -> ReadPrec a -> ReadPrec [a] -> Read a
    readListPrec :: ReadPrec [RenderState n]
    $creadListPrec :: forall n. (Ord n, Read n) => ReadPrec [RenderState n]
    readPrec :: ReadPrec (RenderState n)
    $creadPrec :: forall n. (Ord n, Read n) => ReadPrec (RenderState n)
    readList :: ReadS [RenderState n]
    $creadList :: forall n. (Ord n, Read n) => ReadS [RenderState n]
    readsPrec :: Int -> ReadS (RenderState n)
    $creadsPrec :: forall n. (Ord n, Read n) => Int -> ReadS (RenderState n)
    Read, Int -> RenderState n -> ShowS
    [RenderState n] -> ShowS
    RenderState n -> String
    (Int -> RenderState n -> ShowS)
    -> (RenderState n -> String)
    -> ([RenderState n] -> ShowS)
    -> Show (RenderState n)
    forall n. Show n => Int -> RenderState n -> ShowS
    forall n. Show n => [RenderState n] -> ShowS
    forall n. Show n => RenderState n -> String
    forall a.
    (Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
    showList :: [RenderState n] -> ShowS
    $cshowList :: forall n. Show n => [RenderState n] -> ShowS
    show :: RenderState n -> String
    $cshow :: forall n. Show n => RenderState n -> String
    showsPrec :: Int -> RenderState n -> ShowS
    $cshowsPrec :: forall n. Show n => Int -> RenderState n -> ShowS
    Show, (forall x. RenderState n -> Rep (RenderState n) x)
    -> (forall x. Rep (RenderState n) x -> RenderState n)
    -> Generic (RenderState n)
    forall x. Rep (RenderState n) x -> RenderState n
    forall x. RenderState n -> Rep (RenderState n) x
    forall a.
    (forall x. a -> Rep a x) -> (forall x. Rep a x -> a) -> Generic a
    forall n x. Rep (RenderState n) x -> RenderState n
    forall n x. RenderState n -> Rep (RenderState n) x
    $cto :: forall n x. Rep (RenderState n) x -> RenderState n
    $cfrom :: forall n x. RenderState n -> Rep (RenderState n) x
    Generic, RenderState n -> ()
    (RenderState n -> ()) -> NFData (RenderState n)
    forall n. NFData n => RenderState n -> ()
    forall a. (a -> ()) -> NFData a
    rnf :: RenderState n -> ()
    $crnf :: forall n. NFData n => RenderState n -> ()
    NFData)

    data EventRO n = EventRO { EventRO n -> Map n Viewport
    eventViewportMap :: M.Map n Viewport
                             , EventRO n -> Vty
    eventVtyHandle :: Vty
                             , EventRO n -> [Extent n]
    latestExtents :: [Extent n]
                             , EventRO n -> RenderState n
    oldState :: RenderState n
                             }

    -- | The rendering context. This tells widgets how to render: how much
    -- space they have in which to render, which attribute they should use
    -- to render, which bordering style should be used, and the attribute map
    -- available for rendering.
    data Context =
        Context { Context -> AttrName
    ctxAttrName :: AttrName
                , Context -> Int
    availWidth :: Int
                , Context -> Int
    availHeight :: Int
                , Context -> BorderStyle
    ctxBorderStyle :: BorderStyle
                , Context -> AttrMap
    ctxAttrMap :: AttrMap
                , Context -> Bool
    ctxDynBorders :: Bool
                }
                deriving Int -> Context -> ShowS
    [Context] -> ShowS
    Context -> String
    (Int -> Context -> ShowS)
    -> (Context -> String) -> ([Context] -> ShowS) -> Show Context
    forall a.
    (Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
    showList :: [Context] -> ShowS
    $cshowList :: [Context] -> ShowS
    show :: Context -> String
    $cshow :: Context -> String
    showsPrec :: Int -> Context -> ShowS
    $cshowsPrec :: Int -> Context -> ShowS
    Show

    suffixLenses ''RenderState
    suffixLenses ''VisibilityRequest
    suffixLenses ''CursorLocation
    makeLenses ''Viewport