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feat: Add view stack to BottomPane (#4026)

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Adds a "View Stack" to the bottom pane to allow for pushing/popping
bottom panels.

`esc` will go back instead of dismissing.

Benefit: We retain the "selection state" of a parent panel (e.g. the
review panel).
This commit is contained in:
dedrisian-oai
2025-09-22 11:29:39 -07:00
committed by GitHub
parent d2940bd4c3
commit 8daba53808
9 changed files with 70 additions and 109 deletions
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100
codex-rs/tui/src/bottom_pane/mod.rs
View File

@@ -7,6 +7,7 @@ use crate::user_approval_widget::ApprovalRequest;
use bottom_pane_view::BottomPaneView;
use codex_core::protocol::TokenUsageInfo;
use codex_file_search::FileMatch;
use crossterm::event::KeyCode;
use crossterm::event::KeyEvent;
use ratatui::buffer::Buffer;
use ratatui::layout::Constraint;
@@ -51,8 +52,8 @@ pub(crate) struct BottomPane {
/// input state is retained when the view is closed.
composer: ChatComposer,
/// If present, this is displayed instead of the `composer` (e.g. modals).
active_view: Option<Box<dyn BottomPaneView>>,
/// Stack of views displayed instead of the composer (e.g. popups/modals).
view_stack: Vec<Box<dyn BottomPaneView>>,
app_event_tx: AppEventSender,
frame_requester: FrameRequester,
@@ -89,7 +90,7 @@ impl BottomPane {
params.placeholder_text,
params.disable_paste_burst,
),
active_view: None,
view_stack: Vec::new(),
app_event_tx: params.app_event_tx,
frame_requester: params.frame_requester,
has_input_focus: params.has_input_focus,
@@ -101,12 +102,21 @@ impl BottomPane {
}
}
fn active_view(&self) -> Option<&dyn BottomPaneView> {
self.view_stack.last().map(|view| view.as_ref())
}
fn push_view(&mut self, view: Box<dyn BottomPaneView>) {
self.view_stack.push(view);
self.request_redraw();
}
pub fn desired_height(&self, width: u16) -> u16 {
// Always reserve one blank row above the pane for visual spacing.
let top_margin = 1;
// Base height depends on whether a modal/overlay is active.
let base = match self.active_view.as_ref() {
let base = match self.active_view().as_ref() {
Some(view) => view.desired_height(width),
None => self.composer.desired_height(width).saturating_add(
self.status
@@ -133,7 +143,7 @@ impl BottomPane {
width: area.width,
height: area.height - top_margin - bottom_margin,
};
match self.active_view.as_ref() {
match self.active_view() {
Some(_) => [Rect::ZERO, area],
None => {
let status_height = self
@@ -151,7 +161,7 @@ impl BottomPane {
// In these states the textarea is not interactable, so we should not
// show its caret.
let [_, content] = self.layout(area);
if let Some(view) = self.active_view.as_ref() {
if let Some(view) = self.active_view() {
view.cursor_pos(content)
} else {
self.composer.cursor_pos(content)
@@ -160,12 +170,20 @@ impl BottomPane {
/// Forward a key event to the active view or the composer.
pub fn handle_key_event(&mut self, key_event: KeyEvent) -> InputResult {
if let Some(mut view) = self.active_view.take() {
view.handle_key_event(self, key_event);
if !view.is_complete() {
self.active_view = Some(view);
} else {
// If a modal/view is active, handle it here; otherwise forward to composer.
if let Some(view) = self.view_stack.last_mut() {
if key_event.code == KeyCode::Esc
&& matches!(view.on_ctrl_c(), CancellationEvent::Handled)
&& view.is_complete()
{
self.view_stack.pop();
self.on_active_view_complete();
} else {
view.handle_key_event(key_event);
if view.is_complete() {
self.view_stack.clear();
self.on_active_view_complete();
}
}
self.request_redraw();
InputResult::None
@@ -195,43 +213,31 @@ impl BottomPane {
/// Handle Ctrl-C in the bottom pane. If a modal view is active it gets a
/// chance to consume the event (e.g. to dismiss itself).
pub(crate) fn on_ctrl_c(&mut self) -> CancellationEvent {
let mut view = match self.active_view.take() {
Some(view) => view,
None => {
return if self.composer_is_empty() {
CancellationEvent::NotHandled
} else {
self.set_composer_text(String::new());
self.show_ctrl_c_quit_hint();
CancellationEvent::Handled
};
}
};
let event = view.on_ctrl_c(self);
match event {
CancellationEvent::Handled => {
if !view.is_complete() {
self.active_view = Some(view);
} else {
if let Some(view) = self.view_stack.last_mut() {
let event = view.on_ctrl_c();
if matches!(event, CancellationEvent::Handled) {
if view.is_complete() {
self.view_stack.pop();
self.on_active_view_complete();
}
self.show_ctrl_c_quit_hint();
}
CancellationEvent::NotHandled => {
self.active_view = Some(view);
}
event
} else if self.composer_is_empty() {
CancellationEvent::NotHandled
} else {
self.view_stack.pop();
self.set_composer_text(String::new());
self.show_ctrl_c_quit_hint();
CancellationEvent::Handled
}
event
}
pub fn handle_paste(&mut self, pasted: String) {
if let Some(mut view) = self.active_view.take() {
let needs_redraw = view.handle_paste(self, pasted);
if let Some(view) = self.view_stack.last_mut() {
let needs_redraw = view.handle_paste(pasted);
if view.is_complete() {
self.on_active_view_complete();
} else {
self.active_view = Some(view);
}
if needs_redraw {
self.request_redraw();
@@ -332,7 +338,7 @@ impl BottomPane {
/// Show a generic list selection view with the provided items.
pub(crate) fn show_selection_view(&mut self, params: list_selection_view::SelectionViewParams) {
let view = list_selection_view::ListSelectionView::new(params, self.app_event_tx.clone());
self.active_view = Some(Box::new(view));
self.push_view(Box::new(view));
}
/// Update the queued messages shown under the status header.
@@ -362,7 +368,7 @@ impl BottomPane {
/// overlays or popups and not running a task. This is the safe context to
/// use Esc-Esc for backtracking from the main view.
pub(crate) fn is_normal_backtrack_mode(&self) -> bool {
!self.is_task_running && self.active_view.is_none() && !self.composer.popup_active()
!self.is_task_running && self.view_stack.is_empty() && !self.composer.popup_active()
}
/// Update the *context-window remaining* indicator in the composer. This
@@ -373,13 +379,12 @@ impl BottomPane {
}
pub(crate) fn show_view(&mut self, view: Box<dyn BottomPaneView>) {
self.active_view = Some(view);
self.request_redraw();
self.push_view(view);
}
/// Called when the agent requests user approval.
pub fn push_approval_request(&mut self, request: ApprovalRequest) {
let request = if let Some(view) = self.active_view.as_mut() {
let request = if let Some(view) = self.view_stack.last_mut() {
match view.try_consume_approval_request(request) {
Some(request) => request,
None => {
@@ -394,8 +399,7 @@ impl BottomPane {
// Otherwise create a new approval modal overlay.
let modal = ApprovalModalView::new(request, self.app_event_tx.clone());
self.pause_status_timer_for_modal();
self.active_view = Some(Box::new(modal));
self.request_redraw()
self.push_view(Box::new(modal));
}
fn on_active_view_complete(&mut self) {
@@ -464,7 +468,7 @@ impl BottomPane {
height: u32,
format_label: &str,
) {
if self.active_view.is_none() {
if self.view_stack.is_empty() {
self.composer
.attach_image(path, width, height, format_label);
self.request_redraw();
@@ -481,7 +485,7 @@ impl WidgetRef for &BottomPane {
let [status_area, content] = self.layout(area);
// When a modal view is active, it owns the whole content area.
if let Some(view) = &self.active_view {
if let Some(view) = self.active_view() {
view.render(content, buf);
} else {
// No active modal:
@@ -591,7 +595,7 @@ mod tests {
// After denial, since the task is still running, the status indicator should be
// visible above the composer. The modal should be gone.
assert!(
pane.active_view.is_none(),
pane.view_stack.is_empty(),
"no active modal view after denial"
);