86 lines
2.4 KiB
Rust
86 lines
2.4 KiB
Rust
use crate::clipboard;
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use crate::core::widget;
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use crate::font;
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use crate::system;
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use crate::window;
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use iced_futures::MaybeSend;
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use std::borrow::Cow;
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use std::fmt;
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/// An action that a [`Command`] can perform.
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///
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/// [`Command`]: crate::Command
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pub enum Action<T> {
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/// Run a [`Future`] to completion.
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///
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/// [`Future`]: iced_futures::BoxFuture
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Future(iced_futures::BoxFuture<T>),
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/// Run a clipboard action.
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Clipboard(clipboard::Action<T>),
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/// Run a window action.
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Window(window::Action<T>),
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/// Run a system action.
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System(system::Action<T>),
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/// Run a widget action.
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Widget(Box<dyn widget::Operation<T>>),
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/// Load a font from its bytes.
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LoadFont {
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/// The bytes of the font to load.
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bytes: Cow<'static, [u8]>,
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/// The message to produce when the font has been loaded.
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tagger: Box<dyn Fn(Result<(), font::Error>) -> T>,
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},
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}
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impl<T> Action<T> {
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/// Applies a transformation to the result of a [`Command`].
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///
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/// [`Command`]: crate::Command
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pub fn map<A>(
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self,
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f: impl Fn(T) -> A + 'static + MaybeSend + Sync,
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) -> Action<A>
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where
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A: 'static,
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T: 'static,
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{
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use iced_futures::futures::FutureExt;
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match self {
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Self::Future(future) => Action::Future(Box::pin(future.map(f))),
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Self::Clipboard(action) => Action::Clipboard(action.map(f)),
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Self::Window(window) => Action::Window(window.map(f)),
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Self::System(system) => Action::System(system.map(f)),
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Self::Widget(operation) => {
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Action::Widget(Box::new(widget::operation::map(operation, f)))
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}
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Self::LoadFont { bytes, tagger } => Action::LoadFont {
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bytes,
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tagger: Box::new(move |result| f(tagger(result))),
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},
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}
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}
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}
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impl<T> fmt::Debug for Action<T> {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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match self {
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Self::Future(_) => write!(f, "Action::Future"),
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Self::Clipboard(action) => {
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write!(f, "Action::Clipboard({action:?})")
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}
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Self::Window(action) => write!(f, "Action::Window({action:?})"),
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Self::System(action) => write!(f, "Action::System({action:?})"),
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Self::Widget(_action) => write!(f, "Action::Widget"),
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Self::LoadFont { .. } => write!(f, "Action::LoadFont"),
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}
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}
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}
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