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feat(ui): add collapsing_with_toggle() for header-row enables

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Doppler/Jets/Grid/Planets get their enable checkbox in the collapsing
header (not a body row). Uses CollapsingState::show_header. Body closure
receives the enabled flag so it can add_enabled() its rows.
This commit is contained in:
xfy 2026-07-17 15:44:59 +08:00
parent d542d527f2
commit dfa8c77ab1
1 changed files with 29 additions and 0 deletions
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29
src/ui/mod.rs
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@ -64,6 +64,35 @@ fn collapsing(
});
}
/// Collapsible section whose header hosts an enable toggle on the right.
/// Used by Doppler / Jets / Grid / Planets (design §4.1). The body closure
/// receives the current `enabled` state so it can `add_enabled` its rows.
///
/// State persistence is handled by `HeaderResponse::body`, which calls
/// `CollapsingState::store` internally via `show_body_indented` (see egui
/// 0.35 `containers/collapsing_header.rs`). `show_header` consumes the
/// state, so there is no separate `store` call here.
fn collapsing_with_toggle(
ui: &mut egui::Ui,
id: &str,
title: &str,
default_open: bool,
enabled: &mut bool,
body: impl FnOnce(&mut egui::Ui, bool),
) {
let id = ui.make_persistent_id(id);
let state =
egui::collapsing_header::CollapsingState::load_with_default_open(ui.ctx(), id, default_open);
state
.show_header(ui, |ui| {
ui.checkbox(enabled, title);
})
.body(|ui| {
ui.set_width(ui.available_width());
body(ui, *enabled);
});
}
pub fn ui_system(
mut contexts: bevy_egui::EguiContexts,
mut params: ResMut<crate::params::BlackHoleParams>,