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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| // Copyright 2024 the Xilem Authors | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
|
|
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| use std::marker::PhantomData; | ||
|
|
||
| use masonry::widget; | ||
| use xilem_core::ViewMarker; | ||
|
|
||
| use crate::{ | ||
| core::{Mut, View, ViewId}, | ||
| Pod, ViewCtx, WidgetView, | ||
| }; | ||
|
|
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| /// A scrollable widget portal | ||
| pub fn portal<State, Action, V>(inner: V) -> Portal<V, State, Action> | ||
| where | ||
| V: WidgetView<State, Action>, | ||
| { | ||
| Portal { | ||
| inner, | ||
| phantom: PhantomData, | ||
| } | ||
| } | ||
|
|
||
| pub struct Portal<V, State, Action = ()> { | ||
| inner: V, | ||
| phantom: PhantomData<fn() -> (State, Action)>, | ||
| } | ||
|
|
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| impl<V, State, Action> Portal<V, State, Action> {} | ||
|
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| impl<V, State, Action> ViewMarker for Portal<V, State, Action> {} | ||
| impl<V, State, Action> View<State, Action, ViewCtx> for Portal<V, State, Action> | ||
| where | ||
| State: 'static, | ||
| Action: 'static, | ||
| V: WidgetView<State, Action>, | ||
| { | ||
| type Element = Pod<widget::Portal>; | ||
| type ViewState = V::ViewState; | ||
|
|
||
| fn build(&self, ctx: &mut ViewCtx) -> (Self::Element, Self::ViewState) { | ||
| let (child, child_state) = self.inner.build(ctx); | ||
| let widget = widget::Portal::new_pod(child.inner.boxed()).content_must_fill(true); | ||
| (Pod::new(widget), child_state) | ||
| } | ||
|
|
||
| fn rebuild<'el>( | ||
| &self, | ||
| prev: &Self, | ||
| view_state: &mut Self::ViewState, | ||
| ctx: &mut ViewCtx, | ||
| mut element: Mut<'el, Self::Element>, | ||
| ) -> Mut<'el, Self::Element> { | ||
| { | ||
| let mut child = element.child_mut(); | ||
| self.inner | ||
| .rebuild(&prev.inner, view_state, ctx, child.downcast()); | ||
| } | ||
| element | ||
| } | ||
|
|
||
| fn teardown( | ||
| &self, | ||
| view_state: &mut Self::ViewState, | ||
| ctx: &mut ViewCtx, | ||
| mut element: Mut<'_, Self::Element>, | ||
| ) { | ||
| let mut child = element.child_mut(); | ||
| self.inner.teardown(view_state, ctx, child.downcast()); | ||
| } | ||
|
|
||
| fn message( | ||
| &self, | ||
| view_state: &mut Self::ViewState, | ||
| id_path: &[ViewId], | ||
| message: xilem_core::DynMessage, | ||
| app_state: &mut State, | ||
| ) -> crate::MessageResult<Action> { | ||
| self.inner.message(view_state, id_path, message, app_state) | ||
| } | ||
| } |