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use std::io;
use std::sync::mpsc;
use std::thread;
use termion::event::Key;
use termion::input::TermRead;
#[derive(Debug)]
pub enum Event {
Input(Key),
IOWorkerProgress(u64),
IOWorkerResult,
}
#[derive(Debug, Clone, Copy)]
pub struct Config {}
impl Default for Config {
fn default() -> Config {
Config {}
}
}
/// A small event handler that wrap termion input and tick events. Each event
/// type is handled in its own thread and returned to a common `Receiver`
pub struct Events {
prefix: &'static str,
pub event_tx: mpsc::Sender<Event>,
event_rx: mpsc::Receiver<Event>,
pub sync_tx: mpsc::SyncSender<()>,
// fileio_handle: thread::JoinHandle<()>,
}
impl Events {
pub fn new() -> Self {
Events::with_config("")
}
pub fn with_debug(s: &'static str) -> Self {
let event = Events::with_config(s);
event
}
pub fn with_config(prefix: &'static str) -> Self {
let (sync_tx, sync_rx) = mpsc::sync_channel(1);
let (event_tx, event_rx) = mpsc::channel();
{
let event_tx = event_tx.clone();
thread::spawn(move || {
let stdin = io::stdin();
let mut keys = stdin.keys();
while let Ok(_) = sync_rx.recv() {
if let Some(evt) = keys.next() {
match evt {
Ok(key) => {
if let Err(e) = event_tx.send(Event::Input(key)) {
eprintln!("[{}] Input thread send err: {:#?}", prefix, e);
return;
}
}
_ => {}
}
}
}
})
};
Events {
event_tx,
event_rx,
sync_tx,
prefix,
}
}
pub fn next(&self) -> Result<Event, mpsc::RecvError> {
self.sync_tx.try_send(());
let event = self.event_rx.recv()?;
Ok(event)
}
/*
pub fn flush(&self) {
self.sync_rx.try_recv();
}
*/
}
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