add AnyViewPort

This commit is contained in:
Michael Sippel 2021-05-03 19:41:08 +02:00
parent a1b95c5892
commit 1448f31cf4
Signed by: senvas
GPG key ID: F96CF119C34B64A6

View file

@ -158,3 +158,72 @@ where V::Msg: Clone {
} }
*/ */
//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
#[derive(Debug, Clone)]
pub struct AnyViewPort {
view: Arc<dyn Any + Send + Sync + 'static>,
observers: Arc<dyn Any + Send + Sync + 'static>
}
impl AnyViewPort {
pub fn downcast<V: View + ?Sized + 'static>(self) -> Result<ViewPort<V>, AnyViewPort> {
match (
self.view.clone().downcast::<RwLock<Option<Arc<V>>>>(),
self.observers.clone().downcast::<RwLock<ObserverBroadcast<V>>>()
) {
(Ok(view), Ok(observers)) => Ok(ViewPort{view, observers}),
_ => Err(self)
}
}
}
impl<V: View + ?Sized + 'static> From<ViewPort<V>> for AnyViewPort {
fn from(port: ViewPort<V>) -> Self {
AnyViewPort {
view: port.view as Arc<dyn Any + Send + Sync + 'static>,
observers: port.observers as Arc<dyn Any + Send + Sync + 'static>
}
}
}
//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>
#[derive(Debug, Clone)]
pub struct AnyOuterViewPort(AnyViewPort);
#[derive(Debug, Clone)]
pub struct AnyInnerViewPort(AnyViewPort);
impl AnyOuterViewPort {
pub fn downcast<V: View + ?Sized + 'static>(self) -> Result<OuterViewPort<V>, AnyViewPort> {
Ok(OuterViewPort(self.0.downcast::<V>()?))
}
}
impl<V: View + ?Sized + 'static> From<OuterViewPort<V>> for AnyOuterViewPort {
fn from(port: OuterViewPort<V>) -> Self {
AnyOuterViewPort(AnyViewPort{
view: port.0.view as Arc<dyn Any + Send + Sync + 'static>,
observers: port.0.observers as Arc<dyn Any + Send + Sync + 'static>
})
}
}
impl AnyInnerViewPort {
pub fn downcast<V: View + ?Sized + 'static>(self) -> Result<InnerViewPort<V>, AnyViewPort> {
Ok(InnerViewPort(self.0.downcast::<V>()?))
}
}
impl<V: View + ?Sized + 'static> From<InnerViewPort<V>> for AnyInnerViewPort {
fn from(port: InnerViewPort<V>) -> Self {
AnyInnerViewPort(AnyViewPort{
view: port.0.view as Arc<dyn Any + Send + Sync + 'static>,
observers: port.0.observers as Arc<dyn Any + Send + Sync + 'static>
})
}
}
//<<<<>>>><<>><><<>><<<*>>><<>><><<>><<<<>>>>