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{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE AllowAmbiguousTypes #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE RoleAnnotations #-}
{-# LANGUAGE ImplicitParams #-}
{-# LANGUAGE RankNTypes #-}
module Data.GI.Base.Signals (SignalInfo(..), SignalProxy, on, after,
connectGObjectNotify, SignalConnectMode(..)) where
import Data.GI.Base.Overloading (ResolvedSymbolInfo)
import Data.GI.Base.BasicTypes (GObject, GParamSpec)
import Control.Monad.IO.Class (MonadIO)
import Foreign.C (CULong)
import Data.Text (Text)
data SignalConnectMode = SignalConnectBefore
| SignalConnectAfter
class SignalInfo info where
type HaskellCallbackType info
connectSignal :: GObject o =>
o ->
(o -> HaskellCallbackType info) ->
SignalConnectMode ->
Maybe Text ->
IO SignalHandlerId
dbgSignalInfo :: Maybe ResolvedSymbolInfo
dbgSignalInfo = Nothing
type role SignalProxy nominal nominal
data SignalProxy object info where
type SignalHandlerId = CULong
on :: forall object info m.
(GObject object, MonadIO m, SignalInfo info) =>
object -> SignalProxy object info
-> ((?self :: object) => HaskellCallbackType info) -> m SignalHandlerId
after :: forall object info m.
(GObject object, MonadIO m, SignalInfo info) =>
object -> SignalProxy object info
-> ((?self :: object) => HaskellCallbackType info) -> m SignalHandlerId
type GObjectNotifyCallback = GParamSpec -> IO ()
connectGObjectNotify :: GObject o =>
o -> (o -> GObjectNotifyCallback) ->
SignalConnectMode ->
Maybe Text ->
IO SignalHandlerId
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