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use crate::Surface;
use std::cell::RefCell;
use std::io::Result;
use std::io::{BufRead, BufReader, Write};
use std::os::unix::prelude::{AsRawFd, RawFd};
use std::process::{ChildStdin, ChildStdout, Command, Stdio};
use std::rc::Rc;
use crate::i3bar_protocol::{Block, Event, Protocol};
use crate::pointer_btn::PointerBtn;
#[derive(Clone)]
pub struct StatusCmd {
inner: Rc<RefCell<Inner>>,
}
struct Inner {
output: BufReader<ChildStdout>,
input: ChildStdin,
protocol: Protocol,
blocks: Rc<RefCell<Vec<Block>>>,
surfaces: Rc<RefCell<Vec<Surface>>>,
}
impl AsRawFd for StatusCmd {
fn as_raw_fd(&self) -> RawFd {
self.inner.borrow().output.get_ref().as_raw_fd()
}
}
impl Inner {
pub fn notify_available(&mut self) -> Result<()> {
let buf = self.output.fill_buf()?;
self.protocol.process_new_bytes(buf)?;
let consumed = buf.len();
self.output.consume(consumed);
if let Some(new_blocks) = self.protocol.get_blocks() {
*self.blocks.borrow_mut() = new_blocks;
for s in &mut *self.surfaces.borrow_mut() {
s.blocks_need_update = true;
}
}
Ok(())
}
}
impl StatusCmd {
pub fn new(
cmd: &str,
blocks: Rc<RefCell<Vec<Block>>>,
surfaces: Rc<RefCell<Vec<Surface>>>,
) -> Result<Self> {
let mut child = Command::new("sh")
.args(["-c", &format!("exec {cmd}")])
.stdin(Stdio::piped())
.stdout(Stdio::piped())
.spawn()?;
let output = BufReader::new(child.stdout.take().unwrap());
let input = child.stdin.take().unwrap();
Ok(Self {
inner: Rc::new(RefCell::new(Inner {
output,
input,
protocol: Protocol::Unknown,
blocks,
surfaces,
})),
})
}
pub fn notify_available(&mut self) -> Result<()> {
self.inner.borrow_mut().notify_available()
}
pub fn send_click_event(
&mut self,
button: PointerBtn,
name: Option<&str>,
instance: Option<&str>,
) -> Result<()> {
let mut inner = self.inner.borrow_mut();
if inner.protocol.supports_clicks() {
writeln!(
inner.input,
"{}",
serde_json::to_string(&Event {
name,
instance,
button,
..Default::default()
})
.unwrap()
)?;
}
Ok(())
}
}
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