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Allow converting from a WeakView<V> to an AnyWeakView

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This commit is contained in:
Antonio Scandurra 2023-11-03 11:36:18 +01:00
parent 6fc7b17259
commit bed10b433a
1 changed files with 57 additions and 27 deletions
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84
crates/gpui2/src/view.rs
View file

@ -1,7 +1,7 @@
use crate::{ use crate::{
private::Sealed, AnyBox, AnyElement, AnyModel, AnyWeakModel, AppContext, AvailableSpace, private::Sealed, AnyBox, AnyElement, AnyModel, AnyWeakModel, AppContext, AvailableSpace,
BorrowWindow, Bounds, Component, Element, ElementId, Entity, EntityId, Flatten, LayoutId, Bounds, Component, Element, ElementId, Entity, EntityId, Flatten, LayoutId, Model, Pixels,
Model, Pixels, Size, ViewContext, VisualContext, WeakModel, WindowContext, Size, ViewContext, VisualContext, WeakModel, WindowContext,
}; };
use anyhow::{Context, Result}; use anyhow::{Context, Result};
use std::{ use std::{
@ -196,31 +196,9 @@ impl<V: Render> From<View<V>> for AnyView {
fn from(value: View<V>) -> Self { fn from(value: View<V>) -> Self {
AnyView { AnyView {
model: value.model.into_any(), model: value.model.into_any(),
initialize: |view, cx| { initialize: any_view::initialize::<V>,
cx.with_element_id(view.model.entity_id, |_, cx| { layout: any_view::layout::<V>,
let view = view.clone().downcast::<V>().unwrap(); paint: any_view::paint::<V>,
let element = view.update(cx, |view, cx| {
let mut element = AnyElement::new(view.render(cx));
element.initialize(view, cx);
element
});
Box::new(element)
})
},
layout: |view, element, cx| {
cx.with_element_id(view.model.entity_id, |_, cx| {
let view = view.clone().downcast::<V>().unwrap();
let element = element.downcast_mut::<AnyElement<V>>().unwrap();
view.update(cx, |view, cx| element.layout(view, cx))
})
},
paint: |view, element, cx| {
cx.with_element_id(view.model.entity_id, |_, cx| {
let view = view.clone().downcast::<V>().unwrap();
let element = element.downcast_mut::<AnyElement<V>>().unwrap();
view.update(cx, |view, cx| element.paint(view, cx))
})
},
} }
} }
} }
@ -280,6 +258,17 @@ impl AnyWeakView {
} }
} }
impl<V: Render> From<WeakView<V>> for AnyWeakView {
fn from(view: WeakView<V>) -> Self {
Self {
model: view.model.into(),
initialize: any_view::initialize::<V>,
layout: any_view::layout::<V>,
paint: any_view::paint::<V>,
}
}
}
impl<T, E> Render for T impl<T, E> Render for T
where where
T: 'static + FnMut(&mut WindowContext) -> E, T: 'static + FnMut(&mut WindowContext) -> E,
@ -291,3 +280,44 @@ where
(self)(cx) (self)(cx)
} }
} }
mod any_view {
use crate::{AnyElement, AnyView, BorrowWindow, LayoutId, Render, WindowContext};
use std::any::Any;
pub(crate) fn initialize<V: Render>(view: &AnyView, cx: &mut WindowContext) -> Box<dyn Any> {
cx.with_element_id(view.model.entity_id, |_, cx| {
let view = view.clone().downcast::<V>().unwrap();
let element = view.update(cx, |view, cx| {
let mut element = AnyElement::new(view.render(cx));
element.initialize(view, cx);
element
});
Box::new(element)
})
}
pub(crate) fn layout<V: Render>(
view: &AnyView,
element: &mut Box<dyn Any>,
cx: &mut WindowContext,
) -> LayoutId {
cx.with_element_id(view.model.entity_id, |_, cx| {
let view = view.clone().downcast::<V>().unwrap();
let element = element.downcast_mut::<AnyElement<V>>().unwrap();
view.update(cx, |view, cx| element.layout(view, cx))
})
}
pub(crate) fn paint<V: Render>(
view: &AnyView,
element: &mut Box<dyn Any>,
cx: &mut WindowContext,
) {
cx.with_element_id(view.model.entity_id, |_, cx| {
let view = view.clone().downcast::<V>().unwrap();
let element = element.downcast_mut::<AnyElement<V>>().unwrap();
view.update(cx, |view, cx| element.paint(view, cx))
})
}
}