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//! Access the clipboard.
use crate::command::{self, Command};
use crate::core::clipboard::Kind;
use crate::futures::MaybeSend;
use std::fmt;
/// A clipboard action to be performed by some [`Command`].
///
/// [`Command`]: crate::Command
pub enum Action<T> {
/// Read the clipboard and produce `T` with the result.
Read(Box<dyn Fn(Option<String>) -> T>, Kind),
/// Write the given contents to the clipboard.
Write(String, Kind),
}
impl<T> Action<T> {
/// Maps the output of a clipboard [`Action`] using the provided closure.
pub fn map<A>(
self,
f: impl Fn(T) -> A + 'static + MaybeSend + Sync,
) -> Action<A>
where
T: 'static,
{
match self {
Self::Read(o, target) => {
Action::Read(Box::new(move |s| f(o(s))), target)
}
Self::Write(content, target) => Action::Write(content, target),
}
}
}
impl<T> fmt::Debug for Action<T> {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Self::Read(_, target) => write!(f, "Action::Read{target:?}"),
Self::Write(_, target) => write!(f, "Action::Write({target:?})"),
}
}
}
/// Read the current contents of the clipboard.
pub fn read<Message>(
f: impl Fn(Option<String>) -> Message + 'static,
) -> Command<Message> {
Command::single(command::Action::Clipboard(Action::Read(
Box::new(f),
Kind::Standard,
)))
}
/// Read the current contents of the primary clipboard.
pub fn read_primary<Message>(
f: impl Fn(Option<String>) -> Message + 'static,
) -> Command<Message> {
Command::single(command::Action::Clipboard(Action::Read(
Box::new(f),
Kind::Primary,
)))
}
/// Write the given contents to the clipboard.
pub fn write<Message>(contents: String) -> Command<Message> {
Command::single(command::Action::Clipboard(Action::Write(
contents,
Kind::Standard,
)))
}
/// Write the given contents to the primary clipboard.
pub fn write_primary<Message>(contents: String) -> Command<Message> {
Command::single(command::Action::Clipboard(Action::Write(
contents,
Kind::Primary,
)))
}
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