## Summary - Show a temporary Working on diff state in the bottom pan - Add `DiffResult` app event and dispatch git diff asynchronously ## Testing - `just fmt` - `just fix` *(fails: `let` expressions in this position are unstable)* - `cargo test --all-features` *(fails: `let` expressions in this position are unstable)* ------ https://chatgpt.com/codex/tasks/task_i_689a839f32b88321840a893551d5fbef
621 lines
26 KiB
Rust
621 lines
26 KiB
Rust
use crate::app_event::AppEvent;
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use crate::app_event_sender::AppEventSender;
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use crate::chatwidget::ChatWidget;
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use crate::file_search::FileSearchManager;
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use crate::get_git_diff::get_git_diff;
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use crate::onboarding::onboarding_screen::KeyboardHandler;
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use crate::onboarding::onboarding_screen::OnboardingScreen;
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use crate::onboarding::onboarding_screen::OnboardingScreenArgs;
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use crate::should_show_login_screen;
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use crate::slash_command::SlashCommand;
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use crate::tui;
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use codex_core::ConversationManager;
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use codex_core::config::Config;
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use codex_core::protocol::Event;
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use codex_core::protocol::Op;
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use color_eyre::eyre::Result;
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use crossterm::SynchronizedUpdate;
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use crossterm::event::KeyCode;
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use crossterm::event::KeyEvent;
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use crossterm::event::KeyEventKind;
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use crossterm::terminal::supports_keyboard_enhancement;
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use ratatui::layout::Offset;
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use ratatui::prelude::Backend;
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use ratatui::text::Line;
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use std::path::PathBuf;
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use std::sync::Arc;
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use std::sync::atomic::AtomicBool;
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use std::sync::atomic::Ordering;
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use std::sync::mpsc::Receiver;
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use std::sync::mpsc::channel;
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use std::thread;
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use std::time::Duration;
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use std::time::Instant;
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/// Time window for debouncing redraw requests.
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const REDRAW_DEBOUNCE: Duration = Duration::from_millis(1);
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/// Top-level application state: which full-screen view is currently active.
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#[allow(clippy::large_enum_variant)]
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enum AppState<'a> {
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Onboarding {
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screen: OnboardingScreen,
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},
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/// The main chat UI is visible.
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Chat {
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/// Boxed to avoid a large enum variant and reduce the overall size of
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/// `AppState`.
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widget: Box<ChatWidget<'a>>,
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},
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}
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pub(crate) struct App<'a> {
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server: Arc<ConversationManager>,
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app_event_tx: AppEventSender,
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app_event_rx: Receiver<AppEvent>,
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app_state: AppState<'a>,
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/// Config is stored here so we can recreate ChatWidgets as needed.
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config: Config,
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file_search: FileSearchManager,
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pending_history_lines: Vec<Line<'static>>,
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enhanced_keys_supported: bool,
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/// Controls the animation thread that sends CommitTick events.
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commit_anim_running: Arc<AtomicBool>,
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/// Channel to schedule one-shot animation frames; coalesced by a single
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/// scheduler thread.
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frame_schedule_tx: std::sync::mpsc::Sender<Instant>,
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}
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/// Aggregate parameters needed to create a `ChatWidget`, as creation may be
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/// deferred until after the Git warning screen is dismissed.
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#[derive(Clone, Debug)]
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pub(crate) struct ChatWidgetArgs {
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pub(crate) config: Config,
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initial_prompt: Option<String>,
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initial_images: Vec<PathBuf>,
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enhanced_keys_supported: bool,
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}
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impl App<'_> {
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pub(crate) fn new(
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config: Config,
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initial_prompt: Option<String>,
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initial_images: Vec<std::path::PathBuf>,
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show_trust_screen: bool,
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) -> Self {
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let conversation_manager = Arc::new(ConversationManager::default());
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let (app_event_tx, app_event_rx) = channel();
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let app_event_tx = AppEventSender::new(app_event_tx);
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let enhanced_keys_supported = supports_keyboard_enhancement().unwrap_or(false);
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// Spawn a dedicated thread for reading the crossterm event loop and
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// re-publishing the events as AppEvents, as appropriate.
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{
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let app_event_tx = app_event_tx.clone();
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std::thread::spawn(move || {
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loop {
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// This timeout is necessary to avoid holding the event lock
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// that crossterm::event::read() acquires. In particular,
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// reading the cursor position (crossterm::cursor::position())
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// needs to acquire the event lock, and so will fail if it
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// can't acquire it within 2 sec. Resizing the terminal
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// crashes the app if the cursor position can't be read.
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if let Ok(true) = crossterm::event::poll(Duration::from_millis(100)) {
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if let Ok(event) = crossterm::event::read() {
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match event {
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crossterm::event::Event::Key(key_event) => {
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app_event_tx.send(AppEvent::KeyEvent(key_event));
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}
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crossterm::event::Event::Resize(_, _) => {
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app_event_tx.send(AppEvent::RequestRedraw);
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}
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crossterm::event::Event::Paste(pasted) => {
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// Many terminals convert newlines to \r when pasting (e.g., iTerm2),
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// but tui-textarea expects \n. Normalize CR to LF.
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// [tui-textarea]: https://github.com/rhysd/tui-textarea/blob/4d18622eeac13b309e0ff6a55a46ac6706da68cf/src/textarea.rs#L782-L783
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// [iTerm2]: https://github.com/gnachman/iTerm2/blob/5d0c0d9f68523cbd0494dad5422998964a2ecd8d/sources/iTermPasteHelper.m#L206-L216
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let pasted = pasted.replace("\r", "\n");
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app_event_tx.send(AppEvent::Paste(pasted));
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}
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_ => {
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// Ignore any other events.
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}
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}
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}
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} else {
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// Timeout expired, no `Event` is available
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}
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}
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});
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}
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let show_login_screen = should_show_login_screen(&config);
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let app_state = if show_login_screen || show_trust_screen {
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let chat_widget_args = ChatWidgetArgs {
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config: config.clone(),
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initial_prompt,
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initial_images,
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enhanced_keys_supported,
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};
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AppState::Onboarding {
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screen: OnboardingScreen::new(OnboardingScreenArgs {
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event_tx: app_event_tx.clone(),
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codex_home: config.codex_home.clone(),
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cwd: config.cwd.clone(),
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show_login_screen,
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show_trust_screen,
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chat_widget_args,
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}),
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}
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} else {
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let chat_widget = ChatWidget::new(
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config.clone(),
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conversation_manager.clone(),
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app_event_tx.clone(),
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initial_prompt,
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initial_images,
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enhanced_keys_supported,
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);
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AppState::Chat {
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widget: Box::new(chat_widget),
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}
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};
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let file_search = FileSearchManager::new(config.cwd.clone(), app_event_tx.clone());
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// Spawn a single scheduler thread that coalesces both debounced redraw
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// requests and animation frame requests, and emits a single Redraw event
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// at the earliest requested time.
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let (frame_tx, frame_rx) = channel::<Instant>();
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{
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let app_event_tx = app_event_tx.clone();
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std::thread::spawn(move || {
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use std::sync::mpsc::RecvTimeoutError;
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let mut next_deadline: Option<Instant> = None;
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loop {
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if next_deadline.is_none() {
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match frame_rx.recv() {
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Ok(deadline) => next_deadline = Some(deadline),
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Err(_) => break,
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}
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}
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#[expect(clippy::expect_used)]
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let deadline = next_deadline.expect("deadline set");
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let now = Instant::now();
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let timeout = if deadline > now {
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deadline - now
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} else {
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Duration::from_millis(0)
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};
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match frame_rx.recv_timeout(timeout) {
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Ok(new_deadline) => {
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next_deadline =
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Some(next_deadline.map_or(new_deadline, |d| d.min(new_deadline)));
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}
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Err(RecvTimeoutError::Timeout) => {
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app_event_tx.send(AppEvent::Redraw);
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next_deadline = None;
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}
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Err(RecvTimeoutError::Disconnected) => break,
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}
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}
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});
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}
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Self {
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server: conversation_manager,
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app_event_tx,
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pending_history_lines: Vec::new(),
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app_event_rx,
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app_state,
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config,
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file_search,
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enhanced_keys_supported,
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commit_anim_running: Arc::new(AtomicBool::new(false)),
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frame_schedule_tx: frame_tx,
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}
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}
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fn schedule_frame_in(&self, dur: Duration) {
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let _ = self.frame_schedule_tx.send(Instant::now() + dur);
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}
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pub(crate) fn run(&mut self, terminal: &mut tui::Tui) -> Result<()> {
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// Schedule the first render immediately.
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let _ = self.frame_schedule_tx.send(Instant::now());
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while let Ok(event) = self.app_event_rx.recv() {
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match event {
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AppEvent::InsertHistory(lines) => {
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self.pending_history_lines.extend(lines);
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self.app_event_tx.send(AppEvent::RequestRedraw);
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}
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AppEvent::RequestRedraw => {
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self.schedule_frame_in(REDRAW_DEBOUNCE);
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}
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AppEvent::ScheduleFrameIn(dur) => {
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self.schedule_frame_in(dur);
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}
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AppEvent::Redraw => {
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std::io::stdout().sync_update(|_| self.draw_next_frame(terminal))??;
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}
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AppEvent::StartCommitAnimation => {
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if self
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.commit_anim_running
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.compare_exchange(false, true, Ordering::Acquire, Ordering::Relaxed)
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.is_ok()
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{
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let tx = self.app_event_tx.clone();
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let running = self.commit_anim_running.clone();
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thread::spawn(move || {
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while running.load(Ordering::Relaxed) {
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thread::sleep(Duration::from_millis(50));
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tx.send(AppEvent::CommitTick);
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}
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});
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}
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}
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AppEvent::StopCommitAnimation => {
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self.commit_anim_running.store(false, Ordering::Release);
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}
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AppEvent::CommitTick => {
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if let AppState::Chat { widget } = &mut self.app_state {
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widget.on_commit_tick();
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}
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}
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AppEvent::KeyEvent(key_event) => {
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match key_event {
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KeyEvent {
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code: KeyCode::Char('c'),
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modifiers: crossterm::event::KeyModifiers::CONTROL,
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kind: KeyEventKind::Press,
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..
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} => match &mut self.app_state {
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AppState::Chat { widget } => {
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widget.on_ctrl_c();
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}
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AppState::Onboarding { .. } => {
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self.app_event_tx.send(AppEvent::ExitRequest);
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}
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},
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KeyEvent {
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code: KeyCode::Char('z'),
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modifiers: crossterm::event::KeyModifiers::CONTROL,
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kind: KeyEventKind::Press,
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..
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} => {
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#[cfg(unix)]
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{
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self.suspend(terminal)?;
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}
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// No-op on non-Unix platforms.
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}
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KeyEvent {
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code: KeyCode::Char('d'),
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modifiers: crossterm::event::KeyModifiers::CONTROL,
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kind: KeyEventKind::Press,
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..
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} => {
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match &mut self.app_state {
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AppState::Chat { widget } => {
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if widget.composer_is_empty() {
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self.app_event_tx.send(AppEvent::ExitRequest);
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} else {
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// Treat Ctrl+D as a normal key event when the composer
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// is not empty so that it doesn't quit the application
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// prematurely.
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self.dispatch_key_event(key_event);
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}
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}
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AppState::Onboarding { .. } => {
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self.app_event_tx.send(AppEvent::ExitRequest);
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}
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}
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}
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KeyEvent {
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kind: KeyEventKind::Press | KeyEventKind::Repeat,
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..
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} => {
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self.dispatch_key_event(key_event);
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}
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_ => {
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// Ignore Release key events.
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}
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};
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}
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AppEvent::Paste(text) => {
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self.dispatch_paste_event(text);
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}
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AppEvent::CodexEvent(event) => {
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self.dispatch_codex_event(event);
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}
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AppEvent::ExitRequest => {
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break;
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}
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AppEvent::CodexOp(op) => match &mut self.app_state {
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AppState::Chat { widget } => widget.submit_op(op),
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AppState::Onboarding { .. } => {}
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},
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AppEvent::DiffResult(text) => {
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if let AppState::Chat { widget } = &mut self.app_state {
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widget.add_diff_output(text);
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}
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}
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AppEvent::DispatchCommand(command) => match command {
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SlashCommand::New => {
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// User accepted – switch to chat view.
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let new_widget = Box::new(ChatWidget::new(
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self.config.clone(),
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self.server.clone(),
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self.app_event_tx.clone(),
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None,
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Vec::new(),
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self.enhanced_keys_supported,
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));
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self.app_state = AppState::Chat { widget: new_widget };
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self.app_event_tx.send(AppEvent::RequestRedraw);
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}
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SlashCommand::Init => {
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// Guard: do not run if a task is active.
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if let AppState::Chat { widget } = &mut self.app_state {
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const INIT_PROMPT: &str = include_str!("../prompt_for_init_command.md");
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widget.submit_text_message(INIT_PROMPT.to_string());
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}
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}
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SlashCommand::Compact => {
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if let AppState::Chat { widget } = &mut self.app_state {
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widget.clear_token_usage();
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self.app_event_tx.send(AppEvent::CodexOp(Op::Compact));
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}
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}
|
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SlashCommand::Quit => {
|
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break;
|
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}
|
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SlashCommand::Logout => {
|
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if let Err(e) = codex_login::logout(&self.config.codex_home) {
|
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tracing::error!("failed to logout: {e}");
|
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}
|
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break;
|
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}
|
||
SlashCommand::Diff => {
|
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if let AppState::Chat { widget } = &mut self.app_state {
|
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widget.add_diff_in_progress();
|
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}
|
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|
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let tx = self.app_event_tx.clone();
|
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tokio::spawn(async move {
|
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let text = match get_git_diff().await {
|
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Ok((is_git_repo, diff_text)) => {
|
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if is_git_repo {
|
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diff_text
|
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} else {
|
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"`/diff` — _not inside a git repository_".to_string()
|
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}
|
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}
|
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Err(e) => format!("Failed to compute diff: {e}"),
|
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};
|
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tx.send(AppEvent::DiffResult(text));
|
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});
|
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}
|
||
SlashCommand::Mention => {
|
||
if let AppState::Chat { widget } = &mut self.app_state {
|
||
widget.insert_str("@");
|
||
}
|
||
}
|
||
SlashCommand::Status => {
|
||
if let AppState::Chat { widget } = &mut self.app_state {
|
||
widget.add_status_output();
|
||
}
|
||
}
|
||
SlashCommand::Prompts => {
|
||
if let AppState::Chat { widget } = &mut self.app_state {
|
||
widget.add_prompts_output();
|
||
}
|
||
}
|
||
#[cfg(debug_assertions)]
|
||
SlashCommand::TestApproval => {
|
||
use codex_core::protocol::EventMsg;
|
||
use std::collections::HashMap;
|
||
|
||
use codex_core::protocol::ApplyPatchApprovalRequestEvent;
|
||
use codex_core::protocol::FileChange;
|
||
|
||
self.app_event_tx.send(AppEvent::CodexEvent(Event {
|
||
id: "1".to_string(),
|
||
// msg: EventMsg::ExecApprovalRequest(ExecApprovalRequestEvent {
|
||
// call_id: "1".to_string(),
|
||
// command: vec!["git".into(), "apply".into()],
|
||
// cwd: self.config.cwd.clone(),
|
||
// reason: Some("test".to_string()),
|
||
// }),
|
||
msg: EventMsg::ApplyPatchApprovalRequest(
|
||
ApplyPatchApprovalRequestEvent {
|
||
call_id: "1".to_string(),
|
||
changes: HashMap::from([
|
||
(
|
||
PathBuf::from("/tmp/test.txt"),
|
||
FileChange::Add {
|
||
content: "test".to_string(),
|
||
},
|
||
),
|
||
(
|
||
PathBuf::from("/tmp/test2.txt"),
|
||
FileChange::Update {
|
||
unified_diff: "+test\n-test2".to_string(),
|
||
move_path: None,
|
||
},
|
||
),
|
||
]),
|
||
reason: None,
|
||
grant_root: Some(PathBuf::from("/tmp")),
|
||
},
|
||
),
|
||
}));
|
||
}
|
||
},
|
||
AppEvent::OnboardingAuthComplete(result) => {
|
||
if let AppState::Onboarding { screen } = &mut self.app_state {
|
||
screen.on_auth_complete(result);
|
||
}
|
||
}
|
||
AppEvent::OnboardingComplete(ChatWidgetArgs {
|
||
config,
|
||
enhanced_keys_supported,
|
||
initial_images,
|
||
initial_prompt,
|
||
}) => {
|
||
self.app_state = AppState::Chat {
|
||
widget: Box::new(ChatWidget::new(
|
||
config,
|
||
self.server.clone(),
|
||
self.app_event_tx.clone(),
|
||
initial_prompt,
|
||
initial_images,
|
||
enhanced_keys_supported,
|
||
)),
|
||
}
|
||
}
|
||
AppEvent::StartFileSearch(query) => {
|
||
if !query.is_empty() {
|
||
self.file_search.on_user_query(query);
|
||
}
|
||
}
|
||
AppEvent::FileSearchResult { query, matches } => {
|
||
if let AppState::Chat { widget } = &mut self.app_state {
|
||
widget.apply_file_search_result(query, matches);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
terminal.clear()?;
|
||
|
||
Ok(())
|
||
}
|
||
|
||
#[cfg(unix)]
|
||
fn suspend(&mut self, terminal: &mut tui::Tui) -> Result<()> {
|
||
tui::restore()?;
|
||
// SAFETY: Unix-only code path. We intentionally send SIGTSTP to the
|
||
// current process group (pid 0) to trigger standard job-control
|
||
// suspension semantics. This FFI does not involve any raw pointers,
|
||
// is not called from a signal handler, and uses a constant signal.
|
||
// Errors from kill are acceptable (e.g., if already stopped) — the
|
||
// subsequent re-init path will still leave the terminal in a good state.
|
||
// We considered `nix`, but didn't think it was worth pulling in for this one call.
|
||
unsafe { libc::kill(0, libc::SIGTSTP) };
|
||
*terminal = tui::init(&self.config)?;
|
||
terminal.clear()?;
|
||
self.app_event_tx.send(AppEvent::RequestRedraw);
|
||
Ok(())
|
||
}
|
||
|
||
pub(crate) fn token_usage(&self) -> codex_core::protocol::TokenUsage {
|
||
match &self.app_state {
|
||
AppState::Chat { widget } => widget.token_usage().clone(),
|
||
AppState::Onboarding { .. } => codex_core::protocol::TokenUsage::default(),
|
||
}
|
||
}
|
||
|
||
fn draw_next_frame(&mut self, terminal: &mut tui::Tui) -> Result<()> {
|
||
if matches!(self.app_state, AppState::Onboarding { .. }) {
|
||
terminal.clear()?;
|
||
}
|
||
|
||
let screen_size = terminal.size()?;
|
||
let last_known_screen_size = terminal.last_known_screen_size;
|
||
if screen_size != last_known_screen_size {
|
||
let cursor_pos = terminal.get_cursor_position()?;
|
||
let last_known_cursor_pos = terminal.last_known_cursor_pos;
|
||
if cursor_pos.y != last_known_cursor_pos.y {
|
||
// The terminal was resized. The only point of reference we have for where our viewport
|
||
// was moved is the cursor position.
|
||
// NB this assumes that the cursor was not wrapped as part of the resize.
|
||
let cursor_delta = cursor_pos.y as i32 - last_known_cursor_pos.y as i32;
|
||
|
||
let new_viewport_area = terminal.viewport_area.offset(Offset {
|
||
x: 0,
|
||
y: cursor_delta,
|
||
});
|
||
terminal.set_viewport_area(new_viewport_area);
|
||
terminal.clear()?;
|
||
}
|
||
}
|
||
|
||
let size = terminal.size()?;
|
||
let desired_height = match &self.app_state {
|
||
AppState::Chat { widget } => widget.desired_height(size.width),
|
||
AppState::Onboarding { .. } => size.height,
|
||
};
|
||
|
||
let mut area = terminal.viewport_area;
|
||
area.height = desired_height.min(size.height);
|
||
area.width = size.width;
|
||
if area.bottom() > size.height {
|
||
terminal
|
||
.backend_mut()
|
||
.scroll_region_up(0..area.top(), area.bottom() - size.height)?;
|
||
area.y = size.height - area.height;
|
||
}
|
||
if area != terminal.viewport_area {
|
||
terminal.clear()?;
|
||
terminal.set_viewport_area(area);
|
||
}
|
||
if !self.pending_history_lines.is_empty() {
|
||
crate::insert_history::insert_history_lines(
|
||
terminal,
|
||
self.pending_history_lines.clone(),
|
||
);
|
||
self.pending_history_lines.clear();
|
||
}
|
||
terminal.draw(|frame| match &mut self.app_state {
|
||
AppState::Chat { widget } => {
|
||
if let Some((x, y)) = widget.cursor_pos(frame.area()) {
|
||
frame.set_cursor_position((x, y));
|
||
}
|
||
frame.render_widget_ref(&**widget, frame.area())
|
||
}
|
||
AppState::Onboarding { screen } => frame.render_widget_ref(&*screen, frame.area()),
|
||
})?;
|
||
Ok(())
|
||
}
|
||
|
||
/// Dispatch a KeyEvent to the current view and let it decide what to do
|
||
/// with it.
|
||
fn dispatch_key_event(&mut self, key_event: KeyEvent) {
|
||
match &mut self.app_state {
|
||
AppState::Chat { widget } => {
|
||
widget.handle_key_event(key_event);
|
||
}
|
||
AppState::Onboarding { screen } => match key_event.code {
|
||
KeyCode::Char('q') => {
|
||
self.app_event_tx.send(AppEvent::ExitRequest);
|
||
}
|
||
_ => screen.handle_key_event(key_event),
|
||
},
|
||
}
|
||
}
|
||
|
||
fn dispatch_paste_event(&mut self, pasted: String) {
|
||
match &mut self.app_state {
|
||
AppState::Chat { widget } => widget.handle_paste(pasted),
|
||
AppState::Onboarding { .. } => {}
|
||
}
|
||
}
|
||
|
||
fn dispatch_codex_event(&mut self, event: Event) {
|
||
match &mut self.app_state {
|
||
AppState::Chat { widget } => widget.handle_codex_event(event),
|
||
AppState::Onboarding { .. } => {}
|
||
}
|
||
}
|
||
}
|