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web: Add EventLoop::spawn (#2208)

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* web: Add `EventLoop::spawn`

This is the same as `EventLoop::run`, but doesn't throw an exception in order to return `!`.

I decided to name it `spawn` rather than `run_web` because I think that's more descriptive, but I'm happy to change it to `run_web`.

Resolves #1714

* Update src/platform/web.rs

Co-authored-by: Markus Røyset <maroider@protonmail.com>

* Fix outdated names

Co-authored-by: Markus Røyset <maroider@protonmail.com>
This commit is contained in:
Liam Murphy 2022-07-14 01:17:18 +10:00 • committed by GitHub
parent cdd9b1e1eb
commit aa8f8db305
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3 changed files with 56 additions and 9 deletions
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25
src/platform_impl/web/event_loop/mod.rs
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@ -29,7 +29,22 @@ impl<T> EventLoop<T> {
}
}
pub fn run<F>(self, mut event_handler: F) -> !
pub fn run<F>(self, event_handler: F) -> !
where
F: 'static + FnMut(Event<'_, T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
{
self.spawn(event_handler);
// Throw an exception to break out of Rust execution and use unreachable to tell the
// compiler this function won't return, giving it a return type of '!'
backend::throw(
"Using exceptions for control flow, don't mind me. This isn't actually an error!",
);
unreachable!();
}
pub fn spawn<F>(self, mut event_handler: F)
where
F: 'static + FnMut(Event<'_, T>, &RootEventLoopWindowTarget<T>, &mut ControlFlow),
{
@ -41,14 +56,6 @@ impl<T> EventLoop<T> {
self.elw.p.run(Box::new(move |event, flow| {
event_handler(event, &target, flow)
}));
// Throw an exception to break out of Rust exceution and use unreachable to tell the
// compiler this function won't return, giving it a return type of '!'
backend::throw(
"Using exceptions for control flow, don't mind me. This isn't actually an error!",
);
unreachable!();
}
pub fn create_proxy(&self) -> EventLoopProxy<T> {