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This commit is contained in:
Nathan Sobo 2023-09-12 21:34:03 -06:00
parent cae5c76bed
commit faabed1df0
1 changed files with 39 additions and 44 deletions
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83
crates/storybook/src/sketch.rs
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@ -35,22 +35,6 @@ impl AppContext {
}
}
fn update_entity<T: 'static, R>(
&mut self,
handle: &Handle<T>,
update: impl FnOnce(&mut T, &mut ModelContext<T>) -> R,
) -> R {
let mut entity = self
.entities
.remove(&handle.id)
.unwrap()
.downcast::<T>()
.unwrap();
let result = update(&mut *entity, &mut ModelContext::mutable(self, handle.id));
self.entities.insert(handle.id, Box::new(entity));
result
}
fn update_window<R>(
&mut self,
window_id: WindowId,
@ -213,50 +197,61 @@ pub struct Handle<T> {
entity_type: PhantomData<T>,
}
trait Context<'a, 'parent, 'app, 'win> {
type EntityContext<T: 'static>;
trait Context {
type EntityContext<'cx, 'app, 'win, T: 'static>;
fn update_entity<T: 'static, R>(
&mut self,
fn update_entity<'a, 'app, 'win, T: 'static, R>(
&'a mut self,
handle: &Handle<T>,
update: impl FnOnce(&mut T, Self::EntityContext<T>) -> R,
update: impl for<'cx> FnOnce(&mut T, &mut Self::EntityContext<'cx, 'app, 'win, T>) -> R,
) -> R;
}
impl<'a, 'parent: 'a, 'app, 'win> Context<'a, 'parent, 'app, 'win> for AppContext {
type EntityContext<T: 'static> = &'a mut ModelContext<'parent, T>;
impl Context for AppContext {
type EntityContext<'cx, 'app, 'win, T: 'static> = ModelContext<'cx, T>;
fn update_entity<T: 'static, R>(
&mut self,
fn update_entity<'a, 'app, 'win, T: 'static, R>(
&'a mut self,
handle: &Handle<T>,
update: impl FnOnce(&mut T, Self::EntityContext<T>) -> R,
update: impl FnOnce(&mut T, &mut Self::EntityContext<'_, 'app, 'win, T>) -> R,
) -> R {
todo!()
let mut entity = self
.entities
.remove(&handle.id)
.unwrap()
.downcast::<T>()
.unwrap();
let result = update(&mut *entity, &mut ModelContext::mutable(self, handle.id));
self.entities.insert(handle.id, Box::new(entity));
result
}
}
impl<'a, 'parent, 'app, 'win> Context<'a, 'parent, 'app, 'win> for WindowContext<'app, 'win>
where
'parent: 'a,
'app: 'parent,
'win: 'parent,
{
type EntityContext<T: 'static> = &'a mut ViewContext<'parent, 'app, 'win, T>;
// impl<'app, 'win> Context for WindowContext<'app, 'win> {
// type EntityContext<'cx, 'app, 'win, T: 'static> = ModelContext<'cx, T>;
fn update_entity<T: 'static, R>(
&mut self,
handle: &Handle<T>,
update: impl FnOnce(&mut T, Self::EntityContext<T>) -> R,
) -> R {
todo!()
}
}
// fn update_entity<'a, 'app, 'win, T: 'static, R>(
// &'a mut self,
// handle: &Handle<T>,
// update: impl FnOnce(&mut T, &mut Self::EntityContext<'_, 'app, 'win, T>) -> R,
// ) -> R {
// let mut entity = self
// .entities
// .remove(&handle.id)
// .unwrap()
// .downcast::<T>()
// .unwrap();
// let result = update(&mut *entity, &mut ModelContext::mutable(self, handle.id));
// self.entities.insert(handle.id, Box::new(entity));
// result
// }
// }
impl<T: 'static> Handle<T> {
fn update<'a, 'parent, 'app, 'win, C: Context<'a, 'parent, 'app, 'win>, R>(
fn update<'app, 'win, C: Context, R>(
&self,
cx: &mut C,
update: impl FnOnce(&mut T, C::EntityContext<T>) -> R,
update: impl FnOnce(&mut T, &mut C::EntityContext<'_, 'app, 'win, T>) -> R,
) -> R {
cx.update_entity(self, update)
}