vtcode_tui/core_tui/
session.rs

1use std::{collections::VecDeque, sync::Arc, time::Instant};
2
3#[cfg(test)]
4use anstyle::Color as AnsiColorEnum;
5use anstyle::RgbColor;
6use ratatui::crossterm::event::{
7    Event as CrosstermEvent, KeyCode, KeyEvent, KeyEventKind, MouseEvent, MouseEventKind,
8};
9
10use ratatui::{
11    Frame,
12    layout::{Constraint, Layout, Rect},
13    text::{Line, Span, Text},
14    widgets::{Clear, ListState, Widget},
15};
16use tokio::sync::mpsc::{UnboundedReceiver, UnboundedSender};
17
18use super::{
19    style::{measure_text_width, ratatui_color_from_ansi, ratatui_style_from_inline},
20    types::{
21        DiffPreviewState, InlineCommand, InlineEvent, InlineHeaderContext, InlineMessageKind,
22        InlineTextStyle, InlineTheme, OverlayRequest,
23    },
24};
25use crate::config::constants::ui;
26use crate::ui::tui::widgets::SessionWidget;
27
28pub mod file_palette;
29mod header;
30mod impl_events;
31mod impl_init;
32mod impl_input;
33mod impl_layout;
34mod impl_logs;
35mod impl_render;
36mod impl_scroll;
37mod impl_style;
38mod inline_list;
39mod input;
40mod input_manager;
41mod list_panel;
42mod message;
43pub mod modal;
44pub mod mouse_selection;
45mod navigation;
46mod queue;
47pub mod render;
48mod scroll;
49pub mod slash;
50pub mod slash_palette;
51pub mod styling;
52mod text_utils;
53mod transcript;
54pub mod utils;
55pub mod wrapping;
56
57// New modular components (refactored from main session.rs)
58mod command;
59mod editing;
60
61pub mod config;
62mod diff_preview;
63mod events;
64pub mod history_picker;
65mod message_renderer;
66mod messages;
67mod palette;
68mod reflow;
69mod reverse_search;
70mod spinner;
71mod state;
72pub mod terminal_capabilities;
73mod terminal_title;
74#[cfg(test)]
75mod tests;
76mod tool_renderer;
77mod transcript_links;
78mod trust;
79
80use self::file_palette::FilePalette;
81use self::history_picker::HistoryPickerState;
82use self::input_manager::InputManager;
83use self::message::{MessageLabels, MessageLine};
84use self::modal::{ModalState, WizardModalState};
85
86use self::config::AppearanceConfig;
87pub(crate) use self::input::status_requires_shimmer;
88use self::mouse_selection::MouseSelectionState;
89use self::queue::QueueOverlay;
90use self::scroll::ScrollManager;
91use self::slash_palette::SlashPalette;
92use self::spinner::{ShimmerState, ThinkingSpinner};
93use self::styling::SessionStyles;
94use self::transcript::TranscriptReflowCache;
95use self::transcript_links::TranscriptFileLinkTarget;
96#[cfg(test)]
97use super::types::InlineHeaderHighlight;
98// TaskPlan integration intentionally omitted in this UI crate.
99use crate::ui::tui::log::{LogEntry, highlight_log_entry};
100
101const USER_PREFIX: &str = "";
102const PLACEHOLDER_COLOR: RgbColor =
103    RgbColor(ui::PLACEHOLDER_R, ui::PLACEHOLDER_G, ui::PLACEHOLDER_B);
104const MAX_LOG_LINES: usize = 256;
105const MAX_LOG_DRAIN_PER_TICK: usize = 256;
106
107#[derive(Clone, Debug)]
108struct CollapsedPaste {
109    line_index: usize,
110    full_text: String,
111}
112
113pub(crate) enum ActiveOverlay {
114    Modal(Box<ModalState>),
115    Wizard(Box<WizardModalState>),
116    Diff(Box<DiffPreviewState>),
117}
118
119impl ActiveOverlay {
120    fn as_modal(&self) -> Option<&ModalState> {
121        match self {
122            Self::Modal(state) => Some(state),
123            Self::Wizard(_) | Self::Diff(_) => None,
124        }
125    }
126
127    fn as_modal_mut(&mut self) -> Option<&mut ModalState> {
128        match self {
129            Self::Modal(state) => Some(state),
130            Self::Wizard(_) | Self::Diff(_) => None,
131        }
132    }
133
134    fn as_wizard(&self) -> Option<&WizardModalState> {
135        match self {
136            Self::Wizard(state) => Some(state),
137            Self::Modal(_) | Self::Diff(_) => None,
138        }
139    }
140
141    fn as_wizard_mut(&mut self) -> Option<&mut WizardModalState> {
142        match self {
143            Self::Wizard(state) => Some(state),
144            Self::Modal(_) | Self::Diff(_) => None,
145        }
146    }
147
148    fn as_diff(&self) -> Option<&DiffPreviewState> {
149        match self {
150            Self::Diff(state) => Some(state),
151            Self::Modal(_) | Self::Wizard(_) => None,
152        }
153    }
154
155    fn as_diff_mut(&mut self) -> Option<&mut DiffPreviewState> {
156        match self {
157            Self::Diff(state) => Some(state),
158            Self::Modal(_) | Self::Wizard(_) => None,
159        }
160    }
161
162    fn is_modal_like(&self) -> bool {
163        matches!(self, Self::Modal(_) | Self::Wizard(_))
164    }
165
166    fn restore_input(&self) -> bool {
167        match self {
168            Self::Modal(state) => state.restore_input,
169            Self::Wizard(_) | Self::Diff(_) => true,
170        }
171    }
172
173    fn restore_cursor(&self) -> bool {
174        match self {
175            Self::Modal(state) => state.restore_cursor,
176            Self::Wizard(_) | Self::Diff(_) => true,
177        }
178    }
179}
180
181pub struct Session {
182    // --- Managers (Phase 2) ---
183    /// Manages user input, cursor, and command history
184    pub(crate) input_manager: InputManager,
185    /// Manages scroll state and viewport metrics
186    pub(crate) scroll_manager: ScrollManager,
187    user_scrolled: bool,
188
189    // --- Message Management ---
190    pub(crate) lines: Vec<MessageLine>,
191    collapsed_pastes: Vec<CollapsedPaste>,
192    pub(crate) theme: InlineTheme,
193    pub(crate) styles: SessionStyles,
194    pub(crate) appearance: AppearanceConfig,
195    pub(crate) header_context: InlineHeaderContext,
196    pub(crate) header_rows: u16,
197    pub(crate) labels: MessageLabels,
198
199    // --- Prompt/Input Display ---
200    prompt_prefix: String,
201    prompt_style: InlineTextStyle,
202    placeholder: Option<String>,
203    placeholder_style: Option<InlineTextStyle>,
204    pub(crate) input_status_left: Option<String>,
205    pub(crate) input_status_right: Option<String>,
206    input_compact_mode: bool,
207
208    // --- UI State ---
209    slash_palette: SlashPalette,
210    #[allow(dead_code)]
211    navigation_state: ListState,
212    input_enabled: bool,
213    cursor_visible: bool,
214    pub(crate) needs_redraw: bool,
215    pub(crate) needs_full_clear: bool,
216    /// Track if transcript content changed (not just scroll position)
217    pub(crate) transcript_content_changed: bool,
218    should_exit: bool,
219    scroll_cursor_steady_until: Option<Instant>,
220    last_shimmer_active: bool,
221    pub(crate) view_rows: u16,
222    pub(crate) input_height: u16,
223    pub(crate) transcript_rows: u16,
224    pub(crate) transcript_width: u16,
225    pub(crate) transcript_view_top: usize,
226    transcript_area: Option<Rect>,
227    input_area: Option<Rect>,
228    transcript_file_link_targets: Vec<TranscriptFileLinkTarget>,
229    hovered_transcript_file_link: Option<usize>,
230    last_mouse_position: Option<(u16, u16)>,
231
232    // --- Logging ---
233    log_receiver: Option<UnboundedReceiver<LogEntry>>,
234    log_lines: VecDeque<Arc<Text<'static>>>,
235    log_cached_text: Option<Arc<Text<'static>>>,
236    log_evicted: bool,
237    pub(crate) show_logs: bool,
238
239    // --- Rendering ---
240    transcript_cache: Option<TranscriptReflowCache>,
241    /// Cache of visible lines by (scroll_offset, width) - shared via Arc for zero-copy reads
242    /// Avoids expensive clone on cache hits
243    pub(crate) visible_lines_cache: Option<(usize, u16, Arc<Vec<Line<'static>>>)>,
244    pub(crate) queued_inputs: Vec<String>,
245    queue_overlay_cache: Option<QueueOverlay>,
246    queue_overlay_version: u64,
247    active_overlay: Option<ActiveOverlay>,
248    overlay_queue: VecDeque<OverlayRequest>,
249    line_revision_counter: u64,
250    /// Track the first line that needs reflow/update to avoid O(N) scans
251    first_dirty_line: Option<usize>,
252    in_tool_code_fence: bool,
253
254    // --- Palette Management ---
255    pub(crate) file_palette: Option<FilePalette>,
256    pub(crate) file_palette_active: bool,
257    pub(crate) inline_lists_visible: bool,
258
259    // --- Thinking Indicator ---
260    pub(crate) thinking_spinner: ThinkingSpinner,
261    pub(crate) shimmer_state: ShimmerState,
262
263    // --- Reverse Search ---
264    pub(crate) reverse_search_state: reverse_search::ReverseSearchState,
265
266    // --- History Picker (Ctrl+R fuzzy search) ---
267    pub(crate) history_picker_state: HistoryPickerState,
268
269    // --- PTY Session Management ---
270    pub(crate) active_pty_sessions: Option<Arc<std::sync::atomic::AtomicUsize>>,
271
272    // --- Clipboard for yank/paste operations ---
273    #[allow(dead_code)]
274    pub(crate) clipboard: String,
275
276    // --- Mouse Text Selection ---
277    pub(crate) mouse_selection: MouseSelectionState,
278
279    pub(crate) skip_confirmations: bool,
280
281    // --- Performance Caching ---
282    pub(crate) header_lines_cache: Option<Vec<Line<'static>>>,
283    pub(crate) header_height_cache: hashbrown::HashMap<u16, u16>,
284    pub(crate) queued_inputs_preview_cache: Option<Vec<String>>,
285
286    // --- Terminal Title ---
287    /// Product/app name used in terminal title branding
288    pub(crate) app_name: String,
289    /// Workspace root path for dynamic title generation
290    pub(crate) workspace_root: Option<std::path::PathBuf>,
291    /// Last set terminal title to avoid redundant updates
292    last_terminal_title: Option<String>,
293
294    // --- Streaming State ---
295    /// Track if the assistant is currently streaming a final answer.
296    /// When true, user input should be queued instead of submitted immediately
297    /// to prevent race conditions with turn completion (see GitHub #12569).
298    pub(crate) is_streaming_final_answer: bool,
299}
vtcode_tui/core_tui/session.rs

vtcode_tui/core_tui/
session.rs
