xilem/xilem_web/README.md

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<div align="center" class="rustdoc-hidden">
Rewrite xilem_web to support new xilem_core (#403) This ports xilem_web to the new xilem_core. There's also a lot of cleanup internally: * Get rid of all of the complex macros to support DOM interfaces, and instead use associated type bounds on the `View::Element`. * Introduce an extendable modifier based system, which should also work on top of memoization (`Arc`, `Memoize`) and `OneOf` views with an intersection of the modifiable properties. * This modifier based system gets rid of the hacky way to propagate attributes to elements, and takes inspiration by masonrys `WidgetMut` type to apply changes. * Currently that means `Attributes`, `Classes` and `Styles` to reflect what xilem_web previously offered. Downsides (currently, needs some investigation): ~~Due to more internal type complexity via associated types this suffers from https://github.com/rust-lang/rust/issues/105900. The new trait solver should hopefully mitigate some of that, but it seems currently it completely stalls in the todomvc example (not in other examples).~~ ~~The deep, possibly completely static composition via associated type-bounds of the view and element tree unfortunately can take some time to compile, this gets (already) obvious in the todomvc example. The other examples don't seem to suffer that bad yet from that issue, probably because they're quite simple.~~ ~~I really hope we can mitigate this mostly, because I think this is the idiomatic (and more correct) way to implement what the previous API has offered.~~ One idea is to add a `Box<dyn AnyViewSequence>`, as every element takes a "type-erased" `ViewSequence` as parameter, so this may solve most of the issues (at the slight cost of dynamic dispatch/allocations). Edit: idea was mostly successful, see comment right below. I think it also closes #274 It's a draft, as there's a lot of changes in xilem_core that should be upstreamed (and cleaned up) via separate PRs and I would like to (mostly) fix the slow-compile time issue. --------- Co-authored-by: Daniel McNab <36049421+DJMcNab@users.noreply.github.com>
2024-06-28 16:30:18 +08:00
# Xilem Web
Rewrite xilem_web to support new xilem_core (#403) This ports xilem_web to the new xilem_core. There's also a lot of cleanup internally: * Get rid of all of the complex macros to support DOM interfaces, and instead use associated type bounds on the `View::Element`. * Introduce an extendable modifier based system, which should also work on top of memoization (`Arc`, `Memoize`) and `OneOf` views with an intersection of the modifiable properties. * This modifier based system gets rid of the hacky way to propagate attributes to elements, and takes inspiration by masonrys `WidgetMut` type to apply changes. * Currently that means `Attributes`, `Classes` and `Styles` to reflect what xilem_web previously offered. Downsides (currently, needs some investigation): ~~Due to more internal type complexity via associated types this suffers from https://github.com/rust-lang/rust/issues/105900. The new trait solver should hopefully mitigate some of that, but it seems currently it completely stalls in the todomvc example (not in other examples).~~ ~~The deep, possibly completely static composition via associated type-bounds of the view and element tree unfortunately can take some time to compile, this gets (already) obvious in the todomvc example. The other examples don't seem to suffer that bad yet from that issue, probably because they're quite simple.~~ ~~I really hope we can mitigate this mostly, because I think this is the idiomatic (and more correct) way to implement what the previous API has offered.~~ One idea is to add a `Box<dyn AnyViewSequence>`, as every element takes a "type-erased" `ViewSequence` as parameter, so this may solve most of the issues (at the slight cost of dynamic dispatch/allocations). Edit: idea was mostly successful, see comment right below. I think it also closes #274 It's a draft, as there's a lot of changes in xilem_core that should be upstreamed (and cleaned up) via separate PRs and I would like to (mostly) fix the slow-compile time issue. --------- Co-authored-by: Daniel McNab <36049421+DJMcNab@users.noreply.github.com>
2024-06-28 16:30:18 +08:00
</div>
Rewrite xilem_web to support new xilem_core (#403) This ports xilem_web to the new xilem_core. There's also a lot of cleanup internally: * Get rid of all of the complex macros to support DOM interfaces, and instead use associated type bounds on the `View::Element`. * Introduce an extendable modifier based system, which should also work on top of memoization (`Arc`, `Memoize`) and `OneOf` views with an intersection of the modifiable properties. * This modifier based system gets rid of the hacky way to propagate attributes to elements, and takes inspiration by masonrys `WidgetMut` type to apply changes. * Currently that means `Attributes`, `Classes` and `Styles` to reflect what xilem_web previously offered. Downsides (currently, needs some investigation): ~~Due to more internal type complexity via associated types this suffers from https://github.com/rust-lang/rust/issues/105900. The new trait solver should hopefully mitigate some of that, but it seems currently it completely stalls in the todomvc example (not in other examples).~~ ~~The deep, possibly completely static composition via associated type-bounds of the view and element tree unfortunately can take some time to compile, this gets (already) obvious in the todomvc example. The other examples don't seem to suffer that bad yet from that issue, probably because they're quite simple.~~ ~~I really hope we can mitigate this mostly, because I think this is the idiomatic (and more correct) way to implement what the previous API has offered.~~ One idea is to add a `Box<dyn AnyViewSequence>`, as every element takes a "type-erased" `ViewSequence` as parameter, so this may solve most of the issues (at the slight cost of dynamic dispatch/allocations). Edit: idea was mostly successful, see comment right below. I think it also closes #274 It's a draft, as there's a lot of changes in xilem_core that should be upstreamed (and cleaned up) via separate PRs and I would like to (mostly) fix the slow-compile time issue. --------- Co-authored-by: Daniel McNab <36049421+DJMcNab@users.noreply.github.com>
2024-06-28 16:30:18 +08:00
<div align="center">
**Experimental implementation of the Xilem architecture for the Web**
[![Latest published version.](https://img.shields.io/crates/v/xilem_web.svg)](https://crates.io/crates/xilem_web)
[![Documentation build status.](https://img.shields.io/docsrs/xilem_web.svg)](https://docs.rs/xilem_web)
[![Apache 2.0 license.](https://img.shields.io/badge/license-Apache--2.0-blue.svg)](#license)
\
[![Linebender Zulip chat.](https://img.shields.io/badge/Linebender-%23xilem-blue?logo=Zulip)](https://xi.zulipchat.com/#narrow/stream/354396-xilem)
[![GitHub Actions CI status.](https://img.shields.io/github/actions/workflow/status/linebender/xilem/ci.yml?logo=github&label=CI)](https://github.com/linebender/xilem/actions)
[![Dependency staleness status.](https://deps.rs/crate/xilem_web/latest/status.svg)](https://deps.rs/crate/xilem_web)
</div>
This is a prototype implementation of the Xilem architecture (through [Xilem Core][]) using DOM elements as Xilem elements (unfortunately the two concepts have the same name).
## Quickstart
The easiest way to start, is to use [Trunk] within some of the examples (see the `web_examples/` directory).
Run `trunk serve`, then navigate the browser to the link provided (usually <http://localhost:8080>).
### Example
A minimal example to run an application with xilem_web:
```rust,no_run
use xilem_web::{
document_body,
elements::html::{button, div, p},
interfaces::{Element as _, HtmlDivElement},
App,
};
fn app_logic(clicks: &mut u32) -> impl HtmlDivElement<u32> {
div((
button(format!("clicked {clicks} times")).on_click(|clicks: &mut u32, _event| *clicks += 1),
(*clicks >= 5).then_some(p("Huzzah, clicked at least 5 times")),
))
}
pub fn main() {
let clicks = 0;
App::new(document_body(), clicks, app_logic).run();
}
```
## Minimum supported Rust Version (MSRV)
This version of Xilem Web has been verified to compile with **Rust 1.79** and later.
Future versions of Xilem Web might increase the Rust version requirement.
It will not be treated as a breaking change and as such can even happen with small patch releases.
<details>
<summary>Click here if compiling fails.</summary>
As time has passed, some of Xilem Web's dependencies could have released versions with a higher Rust requirement.
If you encounter a compilation issue due to a dependency and don't want to upgrade your Rust toolchain, then you could downgrade the dependency.
```sh
# Use the problematic dependency's name and version
cargo update -p package_name --precise 0.1.1
```
</details>
Rewrite xilem_web to support new xilem_core (#403) This ports xilem_web to the new xilem_core. There's also a lot of cleanup internally: * Get rid of all of the complex macros to support DOM interfaces, and instead use associated type bounds on the `View::Element`. * Introduce an extendable modifier based system, which should also work on top of memoization (`Arc`, `Memoize`) and `OneOf` views with an intersection of the modifiable properties. * This modifier based system gets rid of the hacky way to propagate attributes to elements, and takes inspiration by masonrys `WidgetMut` type to apply changes. * Currently that means `Attributes`, `Classes` and `Styles` to reflect what xilem_web previously offered. Downsides (currently, needs some investigation): ~~Due to more internal type complexity via associated types this suffers from https://github.com/rust-lang/rust/issues/105900. The new trait solver should hopefully mitigate some of that, but it seems currently it completely stalls in the todomvc example (not in other examples).~~ ~~The deep, possibly completely static composition via associated type-bounds of the view and element tree unfortunately can take some time to compile, this gets (already) obvious in the todomvc example. The other examples don't seem to suffer that bad yet from that issue, probably because they're quite simple.~~ ~~I really hope we can mitigate this mostly, because I think this is the idiomatic (and more correct) way to implement what the previous API has offered.~~ One idea is to add a `Box<dyn AnyViewSequence>`, as every element takes a "type-erased" `ViewSequence` as parameter, so this may solve most of the issues (at the slight cost of dynamic dispatch/allocations). Edit: idea was mostly successful, see comment right below. I think it also closes #274 It's a draft, as there's a lot of changes in xilem_core that should be upstreamed (and cleaned up) via separate PRs and I would like to (mostly) fix the slow-compile time issue. --------- Co-authored-by: Daniel McNab <36049421+DJMcNab@users.noreply.github.com>
2024-06-28 16:30:18 +08:00
<div class="rustdoc-hidden">
## Community
Discussion of Xilem Web development happens in the [Linebender Zulip](https://xi.zulipchat.com/), specifically in
Rewrite xilem_web to support new xilem_core (#403) This ports xilem_web to the new xilem_core. There's also a lot of cleanup internally: * Get rid of all of the complex macros to support DOM interfaces, and instead use associated type bounds on the `View::Element`. * Introduce an extendable modifier based system, which should also work on top of memoization (`Arc`, `Memoize`) and `OneOf` views with an intersection of the modifiable properties. * This modifier based system gets rid of the hacky way to propagate attributes to elements, and takes inspiration by masonrys `WidgetMut` type to apply changes. * Currently that means `Attributes`, `Classes` and `Styles` to reflect what xilem_web previously offered. Downsides (currently, needs some investigation): ~~Due to more internal type complexity via associated types this suffers from https://github.com/rust-lang/rust/issues/105900. The new trait solver should hopefully mitigate some of that, but it seems currently it completely stalls in the todomvc example (not in other examples).~~ ~~The deep, possibly completely static composition via associated type-bounds of the view and element tree unfortunately can take some time to compile, this gets (already) obvious in the todomvc example. The other examples don't seem to suffer that bad yet from that issue, probably because they're quite simple.~~ ~~I really hope we can mitigate this mostly, because I think this is the idiomatic (and more correct) way to implement what the previous API has offered.~~ One idea is to add a `Box<dyn AnyViewSequence>`, as every element takes a "type-erased" `ViewSequence` as parameter, so this may solve most of the issues (at the slight cost of dynamic dispatch/allocations). Edit: idea was mostly successful, see comment right below. I think it also closes #274 It's a draft, as there's a lot of changes in xilem_core that should be upstreamed (and cleaned up) via separate PRs and I would like to (mostly) fix the slow-compile time issue. --------- Co-authored-by: Daniel McNab <36049421+DJMcNab@users.noreply.github.com>
2024-06-28 16:30:18 +08:00
[#xilem](https://xi.zulipchat.com/#narrow/stream/354396-xilem).
All public content can be read without logging in.
Contributions are welcome by pull request. The [Rust code of conduct][] applies.
## License
- Licensed under the Apache License, Version 2.0
([LICENSE] or <http://www.apache.org/licenses/LICENSE-2.0>)
</div>
[rust code of conduct]: https://www.rust-lang.org/policies/code-of-conduct
[Trunk]: https://trunkrs.dev/
Rewrite xilem_web to support new xilem_core (#403) This ports xilem_web to the new xilem_core. There's also a lot of cleanup internally: * Get rid of all of the complex macros to support DOM interfaces, and instead use associated type bounds on the `View::Element`. * Introduce an extendable modifier based system, which should also work on top of memoization (`Arc`, `Memoize`) and `OneOf` views with an intersection of the modifiable properties. * This modifier based system gets rid of the hacky way to propagate attributes to elements, and takes inspiration by masonrys `WidgetMut` type to apply changes. * Currently that means `Attributes`, `Classes` and `Styles` to reflect what xilem_web previously offered. Downsides (currently, needs some investigation): ~~Due to more internal type complexity via associated types this suffers from https://github.com/rust-lang/rust/issues/105900. The new trait solver should hopefully mitigate some of that, but it seems currently it completely stalls in the todomvc example (not in other examples).~~ ~~The deep, possibly completely static composition via associated type-bounds of the view and element tree unfortunately can take some time to compile, this gets (already) obvious in the todomvc example. The other examples don't seem to suffer that bad yet from that issue, probably because they're quite simple.~~ ~~I really hope we can mitigate this mostly, because I think this is the idiomatic (and more correct) way to implement what the previous API has offered.~~ One idea is to add a `Box<dyn AnyViewSequence>`, as every element takes a "type-erased" `ViewSequence` as parameter, so this may solve most of the issues (at the slight cost of dynamic dispatch/allocations). Edit: idea was mostly successful, see comment right below. I think it also closes #274 It's a draft, as there's a lot of changes in xilem_core that should be upstreamed (and cleaned up) via separate PRs and I would like to (mostly) fix the slow-compile time issue. --------- Co-authored-by: Daniel McNab <36049421+DJMcNab@users.noreply.github.com>
2024-06-28 16:30:18 +08:00
[LICENSE]: LICENSE
[Xilem Core]: https://crates.io/crates/xilem_core