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Add direct downcast methods to AnyView
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@ -43,3 +43,26 @@ impl<T: View> AnyView for T {
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self
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}
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}
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impl dyn AnyView {
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/// Attempts to downcast `self` to a concrete type.
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pub fn downcast_ref<T: Any>(&self) -> Option<&T> {
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self.as_any().downcast_ref()
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}
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/// Attempts to downcast `self` to a concrete type.
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pub fn downcast_mut<T: Any>(&mut self) -> Option<&mut T> {
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self.as_any_mut().downcast_mut()
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}
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/// Attempts to downcast `Box<Self>` to a concrete type.
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pub fn downcast<T: Any>(self: Box<Self>) -> Result<Box<T>, Box<Self>> {
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// Do the check here + unwrap, so the error
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// value is `Self` and not `dyn Any`.
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if self.as_any().is::<T>() {
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Ok(self.as_boxed_any().downcast().unwrap())
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} else {
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Err(self)
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}
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}
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}
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