This PR begins the process of breaking up the `style_helpers!` macro
into smaller macros that can be used to generate methods for a related
subset of styles.
The style method macros also now accept an optional `visibility`
parameter to control the visibility of the generated methods. This
allows for adding these methods to a struct instead of a just a trait.
For example, to expose just the padding styles on a `Facepile` we can do
this:
```rs
impl Facepile {
fn style(&mut self) -> &mut StyleRefinement {
self.base.style()
}
gpui::padding_style_methods!({
visibility: pub
});
}
```
Release Notes:
- N/A
This PR disables the doctests in the `gpui_macros` crate, as they depend
on `gpui` to run.
Since `gpui` depends on `gpui_macros`, we don't really want to add a
dependency on `gpui` (even though it _appears_ to work as a dev
dependency).
Also did some minor stylistic cleanup of some doc comments.
Release Notes:
- N/A
To turn any struct into a composite element, you can implement a render method
with the following signature:
fn render<V: View>(&mut self, view: &mut V, cx: &mut ViewContext<V>) -> AnyElement<V>;
Then add #[derive(Element)] to the struct definition.
This will make it easier to introduce higher-level components that are expressed in
terms of other elements.
This allows us to drop the context *after* we ran all futures to
completion and that's crucial otherwise we'll never drop entities
and/or flush effects.
