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use std::io::{self, Write};
#[cfg(not(windows))]
use crossterm::event::{PopKeyboardEnhancementFlags, PushKeyboardEnhancementFlags};
#[cfg(any(not(windows), test))]
const DISABLE_HOST_MOUSE_REPORTING_SEQUENCE: &[u8] =
b"\x1b[?1006l\x1b[?1016l\x1b[?1015l\x1b[?1005l\x1b[?1003l\x1b[?1002l\x1b[?1000l";
#[cfg(not(windows))]
pub(crate) fn clear_host_mouse_reporting<W: Write>(writer: &mut W) -> io::Result<()> {
writer.write_all(DISABLE_HOST_MOUSE_REPORTING_SEQUENCE)?;
writer.flush()
}
#[cfg(windows)]
pub(crate) fn clear_host_mouse_reporting<W: Write>(_writer: &mut W) -> io::Result<()> {
Ok(())
}
#[cfg(not(windows))]
pub(crate) fn set_host_kitty_keyboard_report_all<W: Write>(
writer: &mut W,
report_all_keys: bool,
) -> io::Result<()> {
let mut flags = crate::input::ime_compatible_keyboard_enhancement_flags();
if report_all_keys {
flags |= crossterm::event::KeyboardEnhancementFlags::REPORT_ALL_KEYS_AS_ESCAPE_CODES;
// Report-all turns IME commits into CSI-u key events in terminals such
// as Ghostty. Ask the terminal to carry the committed text with them.
flags = crossterm::event::KeyboardEnhancementFlags::from_bits_retain(
flags.bits() | 0b0001_0000,
);
}
// Older iTerm2 releases clear the keyboard stack on SET, so a later pop
// cannot restore the host state. Replace only Herdr's top entry instead.
crossterm::execute!(
writer,
PopKeyboardEnhancementFlags,
PushKeyboardEnhancementFlags(flags)
)
}
#[cfg(windows)]
pub(crate) fn set_host_kitty_keyboard_report_all<W: Write>(
_writer: &mut W,
_report_all_keys: bool,
) -> io::Result<()> {
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn host_keyboard_report_all_replaces_the_current_herdr_stack_entry() {
let mut output = Vec::new();
set_host_kitty_keyboard_report_all(&mut output, true).unwrap();
set_host_kitty_keyboard_report_all(&mut output, false).unwrap();
assert_eq!(output, b"\x1b[<1u\x1b[>31u\x1b[<1u\x1b[>7u");
}
#[test]
fn clears_all_known_host_mouse_modes() {
let sequence = std::str::from_utf8(DISABLE_HOST_MOUSE_REPORTING_SEQUENCE).unwrap();
for mode in ["1000", "1002", "1003", "1005", "1006", "1015", "1016"] {
assert!(
sequence.contains(&format!("\x1b[?{mode}l")),
"missing mouse mode {mode}"
);
}
}
}
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