minor changes in scrolling

This commit is contained in:
Uber Veng
2026-05-25 20:17:31 +07:00
parent 25ccff3a37
commit ee0982b415
3 changed files with 239 additions and 181 deletions

View File

@@ -37,6 +37,7 @@ pub struct App {
pub error: Option<String>, pub error: Option<String>,
pub breadcrumbs: Vec<usize>, pub breadcrumbs: Vec<usize>,
pub selected_index: usize, pub selected_index: usize,
pub menu_scroll_offset: usize,
pub popup: Option<Popup>, pub popup: Option<Popup>,
pub event_tx: UnboundedSender<Event>, pub event_tx: UnboundedSender<Event>,
/// When set, main loop suspends ratatui, runs the command, then restores. /// When set, main loop suspends ratatui, runs the command, then restores.
@@ -54,11 +55,8 @@ pub enum Popup {
ExecutingBashTerminal { child: tokio::process::Child }, ExecutingBashTerminal { child: tokio::process::Child },
ExecutingStructured { ExecutingStructured {
reply_tx: tokio::sync::mpsc::UnboundedSender<String>, reply_tx: tokio::sync::mpsc::UnboundedSender<String>,
script_pid: Option<u32>, /// Fires SIGTERM to the script's process group on Esc.
kill_tx: Option<tokio::sync::oneshot::Sender<()>>, kill_tx: Option<tokio::sync::oneshot::Sender<()>>,
/// Background tokio tasks — aborted when popup closes to prevent
/// stale output from leaking into a subsequent popup.
task_handles: Vec<tokio::task::JoinHandle<()>>,
log_buffer: Vec<String>, log_buffer: Vec<String>,
current_command: Option<executor::StructuredCommand>, current_command: Option<executor::StructuredCommand>,
input_buffer: String, input_buffer: String,
@@ -70,6 +68,8 @@ pub enum Popup {
form_values: Vec<bool>, form_values: Vec<bool>,
/// Index of the first visible line in log_buffer (0 = top of output). /// Index of the first visible line in log_buffer (0 = top of output).
log_scroll_pos: usize, log_scroll_pos: usize,
/// Horizontal scroll offset in chars (0 = leftmost column).
log_scroll_x: usize,
/// When true, keep position pinned to the bottom as new output arrives. /// When true, keep position pinned to the bottom as new output arrives.
log_follow_bottom: bool, log_follow_bottom: bool,
/// Set when the process has exited; popup stays open until Esc. /// Set when the process has exited; popup stays open until Esc.
@@ -110,6 +110,7 @@ impl App {
error: None, error: None,
breadcrumbs: Vec::new(), breadcrumbs: Vec::new(),
selected_index: 0, selected_index: 0,
menu_scroll_offset: 0,
popup: None, popup: None,
event_tx, event_tx,
pending_exec: None, pending_exec: None,
@@ -310,15 +311,14 @@ impl App {
Popup::ExecutingStructured { Popup::ExecutingStructured {
reply_tx, reply_tx,
script_pid,
kill_tx, kill_tx,
task_handles,
input_buffer, input_buffer,
current_command, current_command,
menu_selected_index, menu_selected_index,
form_cursor, form_cursor,
form_values, form_values,
log_scroll_pos, log_scroll_pos,
log_scroll_x,
log_follow_bottom, log_follow_bottom,
log_buffer, log_buffer,
finished: _, finished: _,
@@ -438,6 +438,12 @@ impl App {
*log_follow_bottom = *log_follow_bottom =
*log_scroll_pos + 1 >= log_buffer.len(); *log_scroll_pos + 1 >= log_buffer.len();
} }
KeyCode::Left if !is_text_input && !is_menu && !is_form => {
*log_scroll_x = log_scroll_x.saturating_sub(4);
}
KeyCode::Right if !is_text_input && !is_menu && !is_form => {
*log_scroll_x = log_scroll_x.saturating_add(4);
}
// ── Confirm shortcuts (immediate, no Enter needed) ─ // ── Confirm shortcuts (immediate, no Enter needed) ─
KeyCode::Char('y') | KeyCode::Char('Y') if is_confirm => { KeyCode::Char('y') | KeyCode::Char('Y') if is_confirm => {
@@ -518,10 +524,9 @@ impl App {
let _ = current_command.take(); let _ = current_command.take();
let _ = reply_tx.send("n".to_string()); let _ = reply_tx.send("n".to_string());
} else { } else {
debug_kill(format!("Esc pressed, pid={:?}", script_pid)); if let Some(kx) = kill_tx.take() {
kill_process(*script_pid); let _ = kx.send(());
if let Some(tx) = kill_tx.take() { let _ = tx.send(()); } }
for h in task_handles.drain(..) { h.abort(); }
self.popup = None; self.popup = None;
} }
} }
@@ -588,20 +593,27 @@ impl App {
let _ = reply_tx.send(response); let _ = reply_tx.send(response);
input_buffer.clear(); input_buffer.clear();
*menu_selected_index = 0; *menu_selected_index = 0;
} else {
*log_scroll_x = log_scroll_x.saturating_add(4);
} }
} }
KeyCode::Char('h') if !is_text_input => { KeyCode::Char('h') if !is_text_input => {
if is_confirm { if is_confirm {
let _ = current_command.take(); let _ = current_command.take();
let _ = reply_tx.send("n".to_string()); let _ = reply_tx.send("n".to_string());
} else { } else if !is_menu && !is_form {
kill_process(*script_pid); *log_scroll_x = log_scroll_x.saturating_sub(4);
if let Some(tx) = kill_tx.take() { let _ = tx.send(()); }
for h in task_handles.drain(..) { h.abort(); }
self.popup = None;
} }
} }
// ── H / L = start / end of line (horizontal) ───
KeyCode::Char('H') if !is_text_input && !is_menu && !is_form => {
*log_scroll_x = 0;
}
KeyCode::Char('L') if !is_text_input && !is_menu && !is_form => {
*log_scroll_x = usize::MAX;
}
// ── d / u = PgDn / PgUp (vim half-page scroll) ── // ── d / u = PgDn / PgUp (vim half-page scroll) ──
KeyCode::Char('d') if !is_text_input && !is_form => { KeyCode::Char('d') if !is_text_input && !is_form => {
*log_scroll_pos = log_scroll_pos.saturating_add(10); *log_scroll_pos = log_scroll_pos.saturating_add(10);
@@ -699,24 +711,25 @@ impl App {
KeyCode::Up | KeyCode::Char('k') => { KeyCode::Up | KeyCode::Char('k') => {
let len = self.current_items().len(); let len = self.current_items().len();
if len > 0 { if len > 0 {
self.selected_index = (self.selected_index + len - 1) % len; self.selected_index = self.selected_index.saturating_sub(1);
} }
} }
KeyCode::Down | KeyCode::Char('j') => { KeyCode::Down | KeyCode::Char('j') => {
let len = self.current_items().len(); let len = self.current_items().len();
if len > 0 { if len > 0 && self.selected_index + 1 < len {
self.selected_index = (self.selected_index + 1) % len; self.selected_index += 1;
} }
} }
KeyCode::Enter | KeyCode::Char('l') => { KeyCode::Enter | KeyCode::Char('l') | KeyCode::Right => {
if let Some(item) = self.selected_item().cloned() { if let Some(item) = self.selected_item().cloned() {
self.activate_item(item).await?; self.activate_item(item).await?;
} }
} }
KeyCode::Esc | KeyCode::Char('h') => { KeyCode::Esc | KeyCode::Char('h') | KeyCode::Left => {
if !self.breadcrumbs.is_empty() { if !self.breadcrumbs.is_empty() {
self.breadcrumbs.pop(); self.breadcrumbs.pop();
self.selected_index = 0; self.selected_index = 0;
self.menu_scroll_offset = 0;
} }
} }
KeyCode::Char('r') | KeyCode::Char('R') => { KeyCode::Char('r') | KeyCode::Char('R') => {
@@ -832,11 +845,11 @@ impl App {
} }
async fn run_bash_structured(&mut self, script: &str) -> Result<()> { async fn run_bash_structured(&mut self, script: &str) -> Result<()> {
let (output_rx, command_rx, finished_rx, reply_tx, kill_tx, pid) = let (output_rx, command_rx, finished_rx, reply_tx, kill_tx) =
executor::structured::spawn(script)?; executor::structured::spawn(script)?;
let tx_output = self.event_tx.clone(); let tx_output = self.event_tx.clone();
let h_output = tokio::spawn(async move { tokio::spawn(async move {
let mut rx = output_rx; let mut rx = output_rx;
while let Some(line) = rx.recv().await { while let Some(line) = rx.recv().await {
if tx_output.send(Event::StructuredOutput(line)).is_err() { if tx_output.send(Event::StructuredOutput(line)).is_err() {
@@ -846,7 +859,7 @@ impl App {
}); });
let tx_cmd = self.event_tx.clone(); let tx_cmd = self.event_tx.clone();
let h_cmd = tokio::spawn(async move { tokio::spawn(async move {
let mut rx = command_rx; let mut rx = command_rx;
while let Some(cmd) = rx.recv().await { while let Some(cmd) = rx.recv().await {
if tx_cmd.send(Event::StructuredCommand(cmd)).is_err() { if tx_cmd.send(Event::StructuredCommand(cmd)).is_err() {
@@ -856,16 +869,14 @@ impl App {
}); });
let tx_finished = self.event_tx.clone(); let tx_finished = self.event_tx.clone();
let h_finished = tokio::spawn(async move { tokio::spawn(async move {
let code = finished_rx.await.unwrap_or(1); let code = finished_rx.await.unwrap_or(1);
let _ = tx_finished.send(Event::StructuredFinished(code)); let _ = tx_finished.send(Event::StructuredFinished(code));
}); });
self.popup = Some(Popup::ExecutingStructured { self.popup = Some(Popup::ExecutingStructured {
reply_tx, reply_tx,
script_pid: pid,
kill_tx: Some(kill_tx), kill_tx: Some(kill_tx),
task_handles: vec![h_output, h_cmd, h_finished],
log_buffer: Vec::new(), log_buffer: Vec::new(),
current_command: None, current_command: None,
input_buffer: String::new(), input_buffer: String::new(),
@@ -873,6 +884,7 @@ impl App {
form_cursor: 0, form_cursor: 0,
form_values: Vec::new(), form_values: Vec::new(),
log_scroll_pos: 0, log_scroll_pos: 0,
log_scroll_x: 0,
log_follow_bottom: false, log_follow_bottom: false,
finished: None, finished: None,
}); });
@@ -881,95 +893,3 @@ impl App {
} }
} }
/// Find all descendant PIDs of `root_pid` by scanning /proc/*/status for PPid.
/// Works on any Linux including musl; no external tools needed.
#[cfg(target_os = "linux")]
fn find_descendants(root_pid: u32) -> Vec<u32> {
let mut result = Vec::new();
let mut frontier = vec![root_pid];
// BFS: each round finds the next generation of children.
while !frontier.is_empty() {
let mut next = Vec::new();
if let Ok(entries) = std::fs::read_dir("/proc") {
for entry in entries.flatten() {
let Ok(proc_pid) = entry.file_name().to_string_lossy().parse::<u32>()
else { continue };
if result.contains(&proc_pid) || proc_pid == root_pid {
continue;
}
let path = format!("/proc/{}/status", proc_pid);
let Ok(status) = std::fs::read_to_string(&path) else { continue };
let ppid: u32 = status
.lines()
.find(|l| l.starts_with("PPid:"))
.and_then(|l| l.split_whitespace().nth(1))
.and_then(|s| s.parse().ok())
.unwrap_or(0);
if frontier.contains(&ppid) {
result.push(proc_pid);
next.push(proc_pid);
}
}
}
frontier = next;
}
result
}
/// Kill a process and ALL its descendants (grep, php, mysql, …).
///
/// Linux: scan /proc for every process whose PPid chain leads back to
/// `root_pid`, kill descendants first, then the root itself.
/// macOS: bash was spawned with process_group(0), so PGID == bash PID;
/// kill(-PGID, SIGKILL) terminates the whole group atomically.
fn kill_process(pid: Option<u32>) {
debug_kill(format!("kill_process pid={:?}", pid));
let Some(pid) = pid else { return };
// ── Kill descendants BEFORE bash so the kernel can't reparent them ────────
//
// On Linux: walk /proc/*/status PPid chain to collect all descendants.
#[cfg(target_os = "linux")]
{
let descendants = find_descendants(pid);
debug_kill(format!(" /proc descendants: {:?}", descendants));
for &child in &descendants {
unsafe { libc::kill(child as libc::pid_t, libc::SIGKILL); }
}
}
// Use pgrep to find and log direct children by parent-PID, then kill each.
// pgrep -lP lists "<pid> <command>" lines — gives us names for the log.
if let Ok(out) = std::process::Command::new("pgrep")
.args(["-lP", &pid.to_string()])
.output()
{
let text = String::from_utf8_lossy(&out.stdout);
debug_kill(format!(" pgrep -lP {pid}: [{text}]"));
for line in text.lines() {
if let Some(child_pid) = line.split_whitespace().next()
.and_then(|s| s.parse::<u32>().ok())
{
let r = unsafe { libc::kill(child_pid as libc::pid_t, libc::SIGKILL) };
debug_kill(format!(" kill({child_pid})={r}"));
}
}
}
// ── Kill bash itself (direct + whole process group) ───────────────────────
#[cfg(unix)]
{
let r1 = unsafe { libc::kill(-(pid as libc::pid_t), libc::SIGKILL) };
let r2 = unsafe { libc::kill(pid as libc::pid_t, libc::SIGKILL) };
debug_kill(format!(" kill(-{pid})={r1} kill({pid})={r2}"));
}
}
fn debug_kill(msg: String) {
use std::io::Write;
if let Ok(mut f) = std::fs::OpenOptions::new()
.create(true).append(true).open("/tmp/ostiary-kill.log")
{
let _ = writeln!(f, "{}", msg);
}
}

View File

@@ -88,7 +88,6 @@ pub fn spawn(
tokio::sync::oneshot::Receiver<i32>, tokio::sync::oneshot::Receiver<i32>,
UnboundedSender<String>, UnboundedSender<String>,
tokio::sync::oneshot::Sender<()>, // kill signal tokio::sync::oneshot::Sender<()>, // kill signal
Option<u32>, // bash PID for direct kill
)> { )> {
let mut child = Command::new("bash") let mut child = Command::new("bash")
.arg("-c") .arg("-c")
@@ -96,22 +95,10 @@ pub fn spawn(
.stdin(Stdio::piped()) .stdin(Stdio::piped())
.stdout(Stdio::piped()) .stdout(Stdio::piped())
.stderr(Stdio::piped()) .stderr(Stdio::piped())
// Create a new process group (PGID = bash PID) so that
// kill(-pid, SIGKILL) kills bash AND all its children
// (grep, php, mysql, etc.) without touching the parent ostiary.
.process_group(0)
.spawn()?; .spawn()?;
// Capture the PID before moving child into tasks (needed for kill). // Capture the PID before moving child into tasks (needed for kill).
let pid = child.id(); let pid = child.id();
dbg_kill(format!("spawn: bash pid={:?}", pid));
// Log the actual process group bash landed in.
#[cfg(unix)]
if let Some(p) = pid {
let pgid = unsafe { libc::getpgid(p as libc::pid_t) };
let my_pgid = unsafe { libc::getpgid(0) };
dbg_kill(format!(" bash pgid={pgid} ostiary pgid={my_pgid}"));
}
let stdin = child.stdin.take().unwrap(); let stdin = child.stdin.take().unwrap();
let stdout = child.stdout.take().unwrap(); let stdout = child.stdout.take().unwrap();
@@ -175,33 +162,20 @@ pub fn spawn(
let _ = finished_tx.send(code); let _ = finished_tx.send(code);
}); });
// Kill-watcher: when kill_tx fires, send SIGKILL to the entire process // Kill-watcher: when kill_tx fires, send SIGTERM to the entire process
// group so bash AND all its children are unconditionally terminated. // group so bash AND all its children (mysqldump, php, etc.) are killed.
tokio::spawn(async move { tokio::spawn(async move {
let recv = kill_rx.await; if kill_rx.await.is_ok() {
dbg_kill(format!("kill-watcher: recv={:?} pid={:?}", recv.is_ok(), pid));
if recv.is_ok() {
if let Some(pid) = pid { if let Some(pid) = pid {
#[cfg(unix)] #[cfg(unix)]
{ unsafe {
let r1 = unsafe { libc::kill(-(pid as libc::pid_t), libc::SIGKILL) }; libc::kill(-(pid as libc::pid_t), libc::SIGTERM);
let r2 = unsafe { libc::kill(pid as libc::pid_t, libc::SIGKILL) };
dbg_kill(format!(" kill-watcher kill(-{pid})={r1}, kill({pid})={r2}"));
} }
} }
} }
}); });
Ok((output_rx, cmd_rx, finished_rx, reply_tx, kill_tx, pid)) Ok((output_rx, cmd_rx, finished_rx, reply_tx, kill_tx))
}
fn dbg_kill(msg: String) {
use std::io::Write;
if let Ok(mut f) = std::fs::OpenOptions::new()
.create(true).append(true).open("/tmp/ostiary-kill.log")
{
let _ = writeln!(f, "{}", msg);
}
} }
fn parse_command(json_str: &str, cmd_tx: UnboundedSender<StructuredCommand>) -> Result<()> { fn parse_command(json_str: &str, cmd_tx: UnboundedSender<StructuredCommand>) -> Result<()> {

202
src/ui.rs
View File

@@ -28,27 +28,86 @@ pub fn render(f: &mut Frame, app: &mut App) {
} }
} }
fn render_menu(f: &mut Frame, app: &App, area: Rect) { fn render_menu(f: &mut Frame, app: &mut App, area: Rect) {
const SCROLLOFF: usize = 1;
let items = app.current_items(); let items = app.current_items();
let list_items: Vec<ListItem> = items let total = items.len();
.iter() let inner_w = area.width.saturating_sub(2) as usize;
.enumerate() let inner_h = area.height.saturating_sub(2) as usize;
.map(|(i, item)| { let sel = if total > 0 { app.selected_index.min(total - 1) } else { 0 };
// Wrap each item title into visual lines
let item_lines: Vec<Vec<String>> = items.iter().map(|item| {
let prefix = match &item.kind { let prefix = match &item.kind {
crate::menu::MenuItemKind::Category { .. } => "📁 ", crate::menu::MenuItemKind::Category { .. } => "📁 ",
crate::menu::MenuItemKind::Action { .. } => "", crate::menu::MenuItemKind::Action { .. } => "",
}; };
let content = Line::from(Span::raw(format!("{}{}", prefix, item.title))); wrap_to_lines(&format!("{}{}", prefix, item.title), inner_w)
if i == app.selected_index { }).collect();
ListItem::new(content).style(Style::default().bg(Color::Blue))
// How many items fit starting from offset
let vis_from = |off: usize| -> usize {
let mut rows = 0usize;
let mut n = 0usize;
for lines in item_lines.get(off..).unwrap_or(&[]) {
let h = lines.len().max(1);
if rows + h > inner_h { break; }
rows += h;
n += 1;
}
n
};
// Clamp scroll offset for scrolloff margin
let offset = &mut app.menu_scroll_offset;
if total == 0 {
*offset = 0;
} else { } else {
ListItem::new(content) // Ensure sel is not before offset
if *offset > sel {
*offset = sel;
}
// Scroll up: sel must not be within top SCROLLOFF items
if sel < offset.saturating_add(SCROLLOFF) && *offset > 0 {
*offset = sel.saturating_sub(SCROLLOFF);
}
// Scroll down: sel must not be within bottom SCROLLOFF items
loop {
let vis = vis_from(*offset);
if vis == 0 { break; }
let trigger = offset.saturating_add(vis).saturating_sub(SCROLLOFF);
if sel >= trigger && *offset + vis < total {
*offset += 1;
} else {
break;
}
}
// Clamp to valid range
let max_off = total.saturating_sub(1);
*offset = (*offset).min(max_off);
}
let start = *offset;
let vis = vis_from(start);
let end = (start + vis).min(total);
let list_items: Vec<ListItem> = item_lines[start..end]
.iter()
.enumerate()
.map(|(i, lines)| {
let abs = start + i;
let text: Vec<Line> = lines.iter().map(|l| Line::from(l.clone())).collect();
let li = ListItem::new(ratatui::text::Text::from(text));
if abs == sel {
li.style(Style::default().bg(Color::Blue).add_modifier(Modifier::BOLD))
} else {
li
} }
}) })
.collect(); .collect();
let list = List::new(list_items) let list = List::new(list_items).block(
.block(
Block::default() Block::default()
.borders(Borders::ALL) .borders(Borders::ALL)
.title(" Меню ") .title(" Меню ")
@@ -59,9 +118,25 @@ fn render_menu(f: &mut Frame, app: &App, area: Rect) {
)) ))
.alignment(Alignment::Right), .alignment(Alignment::Right),
), ),
) );
.highlight_style(Style::default().add_modifier(Modifier::BOLD));
f.render_widget(list, area); f.render_widget(list, area);
if total > vis {
let max_off = total.saturating_sub(vis);
let scrollbar = Scrollbar::default()
.orientation(ScrollbarOrientation::VerticalRight)
.begin_symbol(Some(""))
.end_symbol(Some(""))
.thumb_symbol("");
let mut sb_state = ScrollbarState::new(max_off).position(start);
let sb_area = Rect {
x: area.x + area.width.saturating_sub(1),
y: area.y + 1,
width: 1,
height: area.height.saturating_sub(2),
};
f.render_stateful_widget(scrollbar, sb_area, &mut sb_state);
}
} }
fn render_description(f: &mut Frame, app: &App, area: Rect) { fn render_description(f: &mut Frame, app: &App, area: Rect) {
@@ -127,9 +202,7 @@ fn render_popup(f: &mut Frame, popup: &mut Popup) {
Popup::ExecutingStructured { Popup::ExecutingStructured {
reply_tx: _, reply_tx: _,
script_pid: _,
kill_tx: _, kill_tx: _,
task_handles: _,
log_buffer, log_buffer,
current_command, current_command,
input_buffer, input_buffer,
@@ -137,6 +210,7 @@ fn render_popup(f: &mut Frame, popup: &mut Popup) {
form_cursor, form_cursor,
form_values, form_values,
log_scroll_pos, log_scroll_pos,
log_scroll_x,
log_follow_bottom, log_follow_bottom,
finished, finished,
} => { } => {
@@ -172,13 +246,20 @@ fn render_popup(f: &mut Frame, popup: &mut Popup) {
let start = pos; let start = pos;
let end = (start + visible).min(total); let end = (start + visible).min(total);
let viewport_w = chunks[0].width.saturating_sub(2) as usize;
let max_content_w: usize = log_buffer
.iter()
.map(|l| ansi::parse_line(l).iter().map(|(_, s)| s.chars().count()).sum::<usize>())
.max()
.unwrap_or(0);
let max_scroll_x = max_content_w.saturating_sub(viewport_w);
*log_scroll_x = (*log_scroll_x).min(max_scroll_x);
let scroll_x = *log_scroll_x;
let log_items: Vec<ListItem> = log_buffer[start..end] let log_items: Vec<ListItem> = log_buffer[start..end]
.iter() .iter()
.map(|line| { .map(|line| {
let spans: Vec<Span> = ansi::parse_line(line) let spans: Vec<Span> = h_scroll(ansi::parse_line(line), scroll_x);
.into_iter()
.map(|(style, text)| Span::styled(text, style))
.collect();
ListItem::new(Line::from(spans)) ListItem::new(Line::from(spans))
}) })
.collect(); .collect();
@@ -247,6 +328,26 @@ fn render_popup(f: &mut Frame, popup: &mut Popup) {
f.render_stateful_widget(scrollbar, sb_area, &mut sb_state); f.render_stateful_widget(scrollbar, sb_area, &mut sb_state);
} }
// ── Horizontal scrollbar ─────────────────────────────────────────
if max_content_w > viewport_w {
let mut h_state = ScrollbarState::new(max_scroll_x).position(scroll_x);
let hscroll_area = Rect {
x: chunks[0].x + 1,
y: chunks[0].y + chunks[0].height.saturating_sub(1),
width: chunks[0].width.saturating_sub(2),
height: 1,
};
f.render_stateful_widget(
Scrollbar::new(ScrollbarOrientation::HorizontalBottom)
.begin_symbol(Some(""))
.end_symbol(Some(""))
.thumb_symbol("")
.track_symbol(Some("")),
hscroll_area,
&mut h_state,
);
}
// ── Interactive command area ───────────────────────────────────── // ── Interactive command area ─────────────────────────────────────
if cmd_height > 0 { if cmd_height > 0 {
if let Some(cmd) = current_command { if let Some(cmd) = current_command {
@@ -628,3 +729,66 @@ fn centered_rect(percent_x: u16, percent_y: u16, r: Rect) -> Rect {
) )
.split(popup_layout[1])[1] .split(popup_layout[1])[1]
} }
/// Wrap `text` into lines of at most `max_width` chars (word-wrap, hard-break on long words).
fn wrap_to_lines(text: &str, max_width: usize) -> Vec<String> {
if max_width == 0 || text.is_empty() {
return vec![text.to_string()];
}
let mut lines: Vec<String> = Vec::new();
let mut current = String::new();
for word in text.split_whitespace() {
let wlen = word.chars().count();
if current.is_empty() {
if wlen > max_width {
let chars: Vec<char> = word.chars().collect();
for chunk in chars.chunks(max_width) {
let s: String = chunk.iter().collect();
if s.chars().count() == max_width {
lines.push(s);
} else {
current = s;
}
}
} else {
current = word.to_string();
}
} else if current.chars().count() + 1 + wlen <= max_width {
current.push(' ');
current.push_str(word);
} else {
lines.push(std::mem::take(&mut current));
current = word.to_string();
}
}
if !current.is_empty() {
lines.push(current);
}
if lines.is_empty() {
lines.push(String::new());
}
lines
}
/// Skip `offset` display chars from the start of a parsed ANSI span list.
fn h_scroll(parsed: Vec<(ratatui::style::Style, String)>, offset: usize) -> Vec<Span<'static>> {
let mut skip = offset;
let mut result = Vec::new();
for (style, text) in parsed {
if skip == 0 {
result.push(Span::styled(text, style));
} else {
let len = text.chars().count();
if skip >= len {
skip -= len;
} else {
let trimmed: String = text.chars().skip(skip).collect();
skip = 0;
if !trimmed.is_empty() {
result.push(Span::styled(trimmed, style));
}
}
}
}
result
}