| Safe Haskell | None |
|---|---|
| Language | Haskell98 |
Data.GI.Base.Signals
Description
Routines for connecting GObjects to signals.
Synopsis
- on :: forall object info m. (GObject object, MonadIO m, SignalInfo info) => object -> SignalProxy object info -> HaskellCallbackType info -> m SignalHandlerId
- after :: forall object info m. (GObject object, MonadIO m, SignalInfo info) => object -> SignalProxy object info -> HaskellCallbackType info -> m SignalHandlerId
- data SignalProxy (object :: *) (info :: *) where
- SignalProxy :: SignalProxy o info
- PropertyNotify :: (info ~ ResolveAttribute propName o, AttrInfo info, pl ~ AttrLabel info) => AttrLabelProxy propName -> SignalProxy o (GObjectNotifySignalInfo pl)
- data SignalConnectMode
- connectSignalFunPtr :: GObject o => o -> String -> FunPtr a -> SignalConnectMode -> IO SignalHandlerId
- type SignalHandlerId = CULong
- class SignalInfo (info :: *) where
- type HaskellCallbackType info
- data GObjectNotifySignalInfo (propName :: Symbol)
Documentation
on :: forall object info m. (GObject object, MonadIO m, SignalInfo info) => object -> SignalProxy object info -> HaskellCallbackType info -> m SignalHandlerId Source #
Same as connectSignal, specifying from the beginning that the
handler is to be run before the default handler.
on object signal handler = liftIO $ connectSignal signal object handler SignalConnectBefore
after :: forall object info m. (GObject object, MonadIO m, SignalInfo info) => object -> SignalProxy object info -> HaskellCallbackType info -> m SignalHandlerId Source #
Connect a signal to a handler, running the handler after the default one.
after object signal handler = liftIO $ connectSignal signal object handler SignalConnectAfter
data SignalProxy (object :: *) (info :: *) where Source #
Support for overloaded signal connectors.
Constructors
| SignalProxy :: SignalProxy o info | |
| PropertyNotify :: (info ~ ResolveAttribute propName o, AttrInfo info, pl ~ AttrLabel info) => AttrLabelProxy propName -> SignalProxy o (GObjectNotifySignalInfo pl) |
Instances
| info ~ ResolveSignal slot object => IsLabel slot (SignalProxy object info) Source # | |
Methods fromLabel :: SignalProxy object info # | |
| info ~ ResolveSignal slot object => IsLabelProxy slot (SignalProxy object info) Source # | Support for overloaded labels. |
Methods fromLabelProxy :: Proxy slot -> SignalProxy object info Source # | |
data SignalConnectMode Source #
Whether to connect a handler to a signal with connectSignal so
that it runs before/after the default handler for the given signal.
Constructors
| SignalConnectBefore | Run before the default handler. |
| SignalConnectAfter | Run after the default handler. |
connectSignalFunPtr :: GObject o => o -> String -> FunPtr a -> SignalConnectMode -> IO SignalHandlerId Source #
Connect a signal to a handler, given as a FunPtr.
type SignalHandlerId = CULong Source #
Type of a GObject signal handler id.
class SignalInfo (info :: *) where Source #
Information about an overloaded signal.
Minimal complete definition
Associated Types
type HaskellCallbackType info Source #
Methods
connectSignal :: GObject o => SignalProxy o info -> o -> HaskellCallbackType info -> SignalConnectMode -> IO SignalHandlerId Source #
Connect a Haskell function to a signal of the given GObject,
specifying whether the handler will be called before or after
the default handler.
Instances
| KnownSymbol propName => SignalInfo (GObjectNotifySignalInfo propName) Source # | |
Associated Types type HaskellCallbackType (GObjectNotifySignalInfo propName) :: * Source # Methods connectSignal :: GObject o => SignalProxy o (GObjectNotifySignalInfo propName) -> o -> HaskellCallbackType (GObjectNotifySignalInfo propName) -> SignalConnectMode -> IO SignalHandlerId Source # | |
data GObjectNotifySignalInfo (propName :: Symbol) Source #
Connection information for a "notify" signal indicating that a
specific property changed (see PropertyNotify for the relevant
constructor).
Instances
| KnownSymbol propName => SignalInfo (GObjectNotifySignalInfo propName) Source # | |
Associated Types type HaskellCallbackType (GObjectNotifySignalInfo propName) :: * Source # Methods connectSignal :: GObject o => SignalProxy o (GObjectNotifySignalInfo propName) -> o -> HaskellCallbackType (GObjectNotifySignalInfo propName) -> SignalConnectMode -> IO SignalHandlerId Source # | |
| type HaskellCallbackType (GObjectNotifySignalInfo propName) Source # | |