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xilem_html: Introduce DOM interface traits to make per DOM element ty…
…ping possible and flexible
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,59 @@ | ||
| use std::borrow::Cow; | ||
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| use xilem_core::{Id, MessageResult}; | ||
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| use crate::{sealed::Sealed, AttributeValue, ChangeFlags, Cx, View, ViewMarker}; | ||
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| use super::interfaces::{for_all_dom_interfaces, Element}; | ||
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| pub struct Attr<E> { | ||
| pub(crate) element: E, | ||
| pub(crate) name: Cow<'static, str>, | ||
| pub(crate) value: Option<AttributeValue>, | ||
| } | ||
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| impl<E> ViewMarker for Attr<E> {} | ||
| impl<E> Sealed for Attr<E> {} | ||
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| impl<T, A, E: Element<T, A>> View<T, A> for Attr<E> { | ||
| type State = E::State; | ||
| type Element = E::Element; | ||
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| fn build(&self, cx: &mut Cx) -> (Id, Self::State, Self::Element) { | ||
| cx.add_new_attribute_to_current_element(&self.name, &self.value); | ||
| self.element.build(cx) | ||
| } | ||
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| fn rebuild( | ||
| &self, | ||
| cx: &mut Cx, | ||
| prev: &Self, | ||
| id: &mut Id, | ||
| state: &mut Self::State, | ||
| element: &mut Self::Element, | ||
| ) -> ChangeFlags { | ||
| cx.add_new_attribute_to_current_element(&self.name, &self.value); | ||
| self.element.rebuild(cx, &prev.element, id, state, element) | ||
| } | ||
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| fn message( | ||
| &self, | ||
| id_path: &[Id], | ||
| state: &mut Self::State, | ||
| message: Box<dyn std::any::Any>, | ||
| app_state: &mut T, | ||
| ) -> MessageResult<A> { | ||
| self.element.message(id_path, state, message, app_state) | ||
| } | ||
| } | ||
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| macro_rules! impl_dom_interface_for_attr { | ||
| ($dom_interface:ident) => { | ||
| impl<T, A, E: $crate::interfaces::$dom_interface<T, A>> | ||
| $crate::interfaces::$dom_interface<T, A> for Attr<E> | ||
| { | ||
| } | ||
| }; | ||
| } | ||
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| for_all_dom_interfaces!(impl_dom_interface_for_attr); |
2 changes: 1 addition & 1 deletion
2
...xilem_html/src/element/attribute_value.rs → crates/xilem_html/src/attribute_value.rs
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