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C++ part not working because the Callback with arguments are not yet supported with C++
This commit is contained in:
Olivier Goffart 2021-01-19 19:38:25 +01:00
parent 340e8f0d5a
commit 094287697a
8 changed files with 159 additions and 12 deletions
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33
sixtyfps_runtime/corelib/rtti.rs
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@ -19,7 +19,7 @@ use core::pin::Pin;
macro_rules! declare_ValueType {
($($ty:ty,)*) => {
pub trait ValueType: 'static + Default $(+ TryInto<$ty> + TryFrom<$ty>)* {}
pub trait ValueType: 'static + Default + Clone $(+ TryInto<$ty> + TryFrom<$ty>)* {}
};
}
declare_ValueType![
@ -225,10 +225,6 @@ pub trait CallbackInfo<Item, Value> {
item: Pin<&Item>,
handler: Box<dyn Fn(&[Value]) -> Value>,
) -> Result<(), ()>;
/// The offset of the Callback<> in the item.
/// The use of this is unsafe
fn offset(&self) -> usize;
}
impl<Item, Value: Default + 'static> CallbackInfo<Item, Value>
@ -249,9 +245,32 @@ impl<Item, Value: Default + 'static> CallbackInfo<Item, Value>
});
Ok(())
}
}
fn offset(&self) -> usize {
todo!()
impl<Item, Value: Clone + Default + 'static, T: Clone> CallbackInfo<Item, Value>
for FieldOffset<Item, crate::Callback<(T,)>>
where
Value: TryInto<T>,
T: TryInto<Value>,
{
fn emit(&self, item: Pin<&Item>, args: &[Value]) -> Result<Value, ()> {
let value = args.first().ok_or(())?;
let value = value.clone().try_into().map_err(|_| ())?;
self.apply_pin(item).emit(&(value,));
Ok(Value::default())
}
fn set_handler(
&self,
item: Pin<&Item>,
handler: Box<dyn Fn(&[Value]) -> Value>,
) -> Result<(), ()> {
self.apply_pin(item).set_handler(move |(val,)| {
let val: Value = val.clone().try_into().ok().unwrap();
handler(&[val]);
Value::default();
});
Ok(())
}
}