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//! Terminal UI (ratatui) mirroring the GUI: same panels, endpoints, collections,
//! environments, i18n and theming, driven by the keyboard instead of the mouse.
//!
//! Launched with `-r` / `--ratatui`.
mod app;
mod clipboard;
mod draw;
mod editor;
mod git_save;
mod input;
mod new_request;
pub(crate) mod remote;
mod selection;
#[cfg(test)]
mod tests;
mod theme;
mod wrapcache;
use ratatui::crossterm::event::{
self, DisableMouseCapture, EnableMouseCapture, Event, KeyEventKind, KeyboardEnhancementFlags,
MouseButton, MouseEvent, MouseEventKind, PopKeyboardEnhancementFlags,
PushKeyboardEnhancementFlags,
};
use ratatui::crossterm::execute;
use ratatui::crossterm::terminal::supports_keyboard_enhancement;
use std::io;
use std::time::Duration;
use app::TuiApp;
use draw::draw;
/// Entry point: set up the terminal, run the loop, and restore on exit.
pub fn run() -> io::Result<()> {
let mut terminal = ratatui::init();
// Enable the keyboard enhancement protocol where the terminal supports it,
// so modifier combinations like Ctrl+Enter are reported distinctly from a
// plain Enter. (F5 is the universal fallback for terminals that don't.)
let enhanced = supports_keyboard_enhancement().unwrap_or(false);
if enhanced {
let _ = execute!(
io::stdout(),
PushKeyboardEnhancementFlags(KeyboardEnhancementFlags::DISAMBIGUATE_ESCAPE_CODES),
);
}
// Capture the mouse ourselves so drag selections can be scoped to a
// single panel (Request JSON / Response) instead of the terminal
// emulator's own whole-row native selection.
let _ = execute!(io::stdout(), EnableMouseCapture);
// `ratatui::init()` already installed a panic hook that disables raw
// mode and leaves the alternate screen on any panic — but it has no
// idea we also turned on mouse capture (and, maybe, the keyboard
// enhancement protocol) above, so it never undoes *those*. If anything
// panics while either is still active — including a panic inside
// crossterm's own event parser itself (a real, reproducible crash: a
// malformed/edge-case SGR mouse escape sequence, e.g. one reporting a
// coordinate of 0, hits an unchecked `- 1` in
// crossterm 0.29.0's `parse_csi_sgr_mouse` and panics) — the terminal
// emulator is left with mouse tracking still switched on. Every mouse
// move after that keeps sending raw tracking escape sequences straight
// into what is now just a plain shell prompt, which shows up to the
// user as the terminal continuously filling with garbage characters:
// exactly this bug's reported symptom. Wrapping the existing hook with
// one that also disables mouse capture (and pops the keyboard
// enhancement flags, if pushed) closes that gap for *any* panic,
// regardless of whether it originates in our own code or a dependency.
let previous_hook = std::panic::take_hook();
std::panic::set_hook(Box::new(move |info| {
let _ = execute!(io::stdout(), DisableMouseCapture);
if enhanced {
let _ = execute!(io::stdout(), PopKeyboardEnhancementFlags);
}
previous_hook(info);
}));
let mut app = TuiApp::restored();
app.enhanced_keys = enhanced;
let result = loop {
if let Err(e) = terminal.draw(|f| draw(f, &mut app)) {
break Err(e);
}
// Apply any background secret-resolution results (non-blocking).
app.poll_env_updates();
// Apply completed response captures so later requests can use them.
app.poll_capture_updates();
// Advance the remote-git wizard when a background op finishes.
app.poll_git_updates();
// Advance a background Workspace-redownload attempt (see
// `Overlay::WorkspaceReloadConfirm`/`WorkspaceReloadLoading`).
app.poll_workspace_redownload_updates();
// Advance the "save to git" wizard when a background op finishes.
app.poll_git_save_updates();
// Apply completed "Run All" (Alt+F5) results (captures + pass/fail markers).
app.poll_batch_run_updates();
match event::poll(Duration::from_millis(120)) {
Ok(true) => {
// Terminal (column, row) bounds to clamp every incoming
// mouse event against — some terminals report stale or
// out-of-range coordinates once the mouse leaves the window
// (or during a fast drag past its edge), and every part of
// the app assumes a mouse point is within the actual
// rendered area. Clamping here, once, keeps that invariant
// true everywhere downstream instead of each call site
// having to re-guard against it.
let bounds = terminal.size().unwrap_or_default();
let clamp_mouse = |mut m: MouseEvent| {
if bounds.width > 0 {
m.column = m.column.min(bounds.width - 1);
}
if bounds.height > 0 {
m.row = m.row.min(bounds.height - 1);
}
m
};
// Drain every event already queued (not just the one that
// woke us) before drawing again — a fast paste arrives as a
// burst of individual Key events, and a mouse drag can queue
// up many Drag events between frames. Applying them all
// before a single redraw (instead of one redraw per event)
// is what keeps paste/drag responsive instead of appearing
// to advance at ~1 event per frame. Capped so an unusually
// fast/continuous stream of input (e.g. a mouse reporting
// motion at a very high rate) can never starve the redraw
// entirely — the screen must still update periodically even
// mid-flood.
let mut pending_drag: Option<MouseEvent> = None;
let mut err = None;
let mut drained = 0u32;
const MAX_DRAINED_PER_FRAME: u32 = 512;
loop {
match event::read() {
Ok(Event::Key(key)) if key.kind == KeyEventKind::Press => {
if let Some(drag) = pending_drag.take() {
app.on_mouse(drag);
}
app.on_key(key);
}
Ok(Event::Mouse(mouse)) => {
let mouse = clamp_mouse(mouse);
// Consecutive Drag events collapse into just the
// latest position — only the final position of a
// burst of mouse-moves matters for a highlight
// recompute, so this turns N queued drags into a
// single selection update.
if mouse.kind == MouseEventKind::Drag(MouseButton::Left) {
pending_drag = Some(mouse);
} else {
if let Some(drag) = pending_drag.take() {
app.on_mouse(drag);
}
app.on_mouse(mouse);
}
}
Ok(_) => {}
Err(e) => {
err = Some(e);
break;
}
}
drained += 1;
if drained >= MAX_DRAINED_PER_FRAME {
break;
}
match event::poll(Duration::ZERO) {
Ok(true) => continue,
Ok(false) => break,
Err(e) => {
err = Some(e);
break;
}
}
}
if let Some(drag) = pending_drag.take() {
app.on_mouse(drag);
}
if let Some(e) = err {
break Err(e);
}
}
Ok(false) => {}
Err(e) => break Err(e),
}
// Keep auto-scrolling a selection drag held past its panel's edge
// even when the mouse itself isn't moving (no new Drag event to
// drive it) — ticked once per idle loop iteration, roughly every
// 120ms while nothing else arrives.
if app.pending_autoscroll.is_some() {
app.autoscroll_tick();
}
if app.quit {
app.save_state();
break Ok(());
}
};
if enhanced {
let _ = execute!(io::stdout(), PopKeyboardEnhancementFlags);
}
let _ = execute!(io::stdout(), DisableMouseCapture);
ratatui::restore();
result
}