topcoat_font/
resolver.rs

1use std::fmt::Write;
2
3use crate::Font;
4
5/// Function that formats the URL at which a [`Font`]'s CSS is hosted by the
6/// router into a `dyn Write`.
7pub type ResolveFontRouteFn = dyn Fn(Font, &mut dyn Write) -> std::fmt::Result + Send + Sync;
8
9/// Function registered with the app context that resolves a [`Font`] to its
10/// hosted stylesheet URL.
11///
12/// Registered by [`RouterBuilderFontExt`](crate::RouterBuilderFontExt)
13/// when a font is added to the router, and read when a [`Font`] is used as an
14/// attribute value in the `view!` macro.
15pub struct FontResolver {
16    resolve_fn: Box<ResolveFontRouteFn>,
17}
18
19impl FontResolver {
20    /// Builds a resolver from a callback.
21    #[must_use]
22    pub fn new(resolve_fn: Box<ResolveFontRouteFn>) -> Self {
23        Self { resolve_fn }
24    }
25
26    /// Invokes the underlying callback.
27    ///
28    /// # Errors
29    ///
30    /// Propagates errors of the registered [`ResolveFontRouteFn`].
31    pub fn resolve(&self, font: Font, write: &mut dyn Write) -> std::fmt::Result {
32        (self.resolve_fn)(font, write)
33    }
34}
topcoat_font/resolver.rs

topcoat_font/
resolver.rs
