42 lines
1.1 KiB
Rust
42 lines
1.1 KiB
Rust
use crate::runtime::Task;
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use std::borrow::Cow;
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use std::fmt;
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/// A specific boot strategy for a [`Program`](crate::Program).
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pub struct Preset<State, Message> {
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name: Cow<'static, str>,
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boot: Box<dyn Fn() -> (State, Task<Message>)>,
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}
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impl<State, Message> Preset<State, Message> {
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/// Creates a new [`Preset`] with the given name and boot strategy.
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pub fn new(
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name: impl Into<Cow<'static, str>>,
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boot: impl Fn() -> (State, Task<Message>) + 'static,
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) -> Self {
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Self {
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name: name.into(),
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boot: Box::new(boot),
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}
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}
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/// Returns the name of the [`Preset`].
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pub fn name(&self) -> &str {
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&self.name
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}
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/// Boots the [`Preset`], returning the initial [`Program`](crate::Program) state and
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/// a [`Task`] for concurrent booting.
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pub fn boot(&self) -> (State, Task<Message>) {
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(self.boot)()
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}
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}
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impl<State, Message> fmt::Debug for Preset<State, Message> {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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f.debug_struct("Preset")
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.field("name", &self.name)
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.finish_non_exhaustive()
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}
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}
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