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caca0d0ba4
Removed the drop and create from the ComponentVTable: since we are not using VBox<ComponentVTable>, this simplifies a bit the code of the interpreter and everything else. But there is still a lot of changes everywhere to support that the Component is pinned. This is just for the component. Which would be required if later we want to access the properties as Pin<Property<_>>. But we have not yet ability to do projections
40 lines
1.2 KiB
Rust
40 lines
1.2 KiB
Rust
/// Component that can be instantiated by a repeater.
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pub trait RepeatedComponent: sixtyfps_corelib::abi::datastructures::Component + Default {
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/// The data corresponding to the model
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type Data;
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/// Update this component at the given index and the given data
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fn update(&self, index: usize, data: Self::Data);
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}
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/// This field is put in a component when using the `for` syntax
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/// It helps instantiating the components `C`
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#[derive(Default)]
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pub struct Repeater<C> {
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components: Vec<core::pin::Pin<Box<C>>>,
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}
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impl<Data, C> Repeater<C>
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where
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C: RepeatedComponent<Data = Data>,
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{
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/// Called when the model is changed
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pub fn update_model<'a>(&mut self, data: impl Iterator<Item = Data>)
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where
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Data: 'a,
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{
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self.components.clear();
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for (i, d) in data.enumerate() {
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let c = C::default();
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c.update(i, d);
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self.components.push(Box::pin(c));
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}
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}
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/// Call the visitor for each component
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pub fn visit(&self, mut visitor: sixtyfps_corelib::abi::datastructures::ItemVisitorRefMut) {
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for c in &self.components {
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c.as_ref().visit_children_item(-1, visitor.borrow_mut());
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}
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}
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}
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