Rewrite the ui.large_collapsing_header into re_ui::SectionCollapsingHeader using re_ui::ListItem

crates/re_blueprint_tree/src/blueprint_tree.rs

@@ -277,6 +277,7 @@ impl BlueprintTree {
         let list_item::ShowCollapsingResponse {
             item_response: response,
             body_response,
+            ..
         } = ui
             .list_item()
             .selected(ctx.selection().contains_item(&item))
@@ -363,6 +364,7 @@ impl BlueprintTree {
         let list_item::ShowCollapsingResponse {
             item_response: mut response,
             body_response,
+            ..
         } = ui
             .list_item()
             .selected(ctx.selection().contains_item(&item))

crates/re_selection_panel/src/defaults_ui.rs

@@ -56,7 +56,9 @@ pub fn view_components_defaults_section_ui(
             db,
         );
     };
-    ui.large_collapsing_header_with_button("Component defaults", true, body, add_button);
+    ui.section_collapsing_header("Component defaults")
+        .button(add_button)
+        .show(ui, body);
 }
 
 fn active_default_ui(
@@ -83,7 +85,7 @@ fn active_default_ui(
         ui.spacing_mut().item_spacing.y = 0.0;
 
         if sorted_overrides.is_empty() {
-            ui.list_item_flat_noninteractive(LabelContent::new("(none)").weak(true));
+            ui.list_item_flat_noninteractive(LabelContent::new("none").weak(true).italics(true));
         }
 
         for component_name in sorted_overrides {

crates/re_selection_panel/src/selection_panel.rs

@@ -275,7 +275,7 @@ impl SelectionPanel {
         }
 
         if let Some(data_ui_item) = data_section_ui(item) {
-            ui.large_collapsing_header("Data", true, |ui| {
+            ui.section_collapsing_header("Data").show(ui, |ui| {
                 // TODO(#6075): Because `list_item_scope` changes it. Temporary until everything is `ListItem`.
                 ui.spacing_mut().item_spacing.y = ui.ctx().style().spacing.item_spacing.y;
 
@@ -319,74 +319,6 @@ impl SelectionPanel {
         view_id: &SpaceViewId,
         view_states: &mut ViewStates,
     ) {
-        clone_space_view_button_ui(ctx, ui, blueprint, *view_id);
-
-        if let Some(view) = blueprint.view(view_id) {
-            ui.large_collapsing_header("Entity path filter", true, |ui| {
-                // TODO(#6075): Because `list_item_scope` changes it. Temporary until everything is `ListItem`.
-                ui.spacing_mut().item_spacing.y = ui.ctx().style().spacing.item_spacing.y;
-
-                if let Some(new_entity_path_filter) = self.entity_path_filter_ui(
-                    ctx,
-                    ui,
-                    *view_id,
-                    &view.contents.entity_path_filter,
-                    &view.space_origin,
-                ) {
-                    view.contents
-                        .set_entity_path_filter(ctx, &new_entity_path_filter);
-                }
-            })
-            .header_response
-            .on_hover_text(
-                "The entity path query consists of a list of include/exclude rules \
-                that determines what entities are part of this view",
-            );
-        }
-
-        if let Some(view) = blueprint.view(view_id) {
-            let view_class = view.class(ctx.space_view_class_registry);
-            let view_state = view_states.get_mut_or_create(view.id, view_class);
-
-            ui.large_collapsing_header("View properties", true, |ui| {
-                // TODO(#6075): Because `list_item_scope` changes it. Temporary until everything is `ListItem`.
-                ui.spacing_mut().item_spacing.y = ui.ctx().style().spacing.item_spacing.y;
-
-                let cursor = ui.cursor();
-
-                if let Err(err) =
-                    view_class.selection_ui(ctx, ui, view_state, &view.space_origin, view.id)
-                {
-                    re_log::error_once!(
-                        "Error in view selection UI (class: {}, display name: {}): {err}",
-                        view.class_identifier(),
-                        view_class.display_name(),
-                    );
-                }
-
-                if cursor == ui.cursor() {
-                    ui.weak("(none)");
-                }
-            });
-
-            let view_ctx = view.bundle_context_with_state(ctx, view_state);
-            view_components_defaults_section_ui(&view_ctx, ui, view);
-        }
-
-        if let Some(view) = blueprint.view(view_id) {
-            visible_time_range_ui_for_view(ctx, ui, view);
-        }
-    }
-
-    /// Returns a new filter when the editing is done, and there has been a change.
-    fn entity_path_filter_ui(
-        &mut self,
-        ctx: &ViewerContext<'_>,
-        ui: &mut egui::Ui,
-        view_id: SpaceViewId,
-        filter: &EntityPathFilter,
-        origin: &EntityPath,
-    ) -> Option<EntityPathFilter> {
         fn entity_path_filter_help_ui(ui: &mut egui::Ui) {
             let markdown = r#"
 # Entity path query syntax
@@ -428,6 +360,77 @@ The last rule matching `/world/house` is `+ /world/**`, so it is included.
             ui.markdown_ui(egui::Id::new("entity_path_filter_help_ui"), markdown);
         }
 
+        clone_space_view_button_ui(ctx, ui, blueprint, *view_id);
+
+        if let Some(view) = blueprint.view(view_id) {
+            ui.section_collapsing_header("Entity path filter")
+                .help_ui(entity_path_filter_help_ui)
+                .show(ui, |ui| {
+                    // TODO(#6075): Because `list_item_scope` changes it. Temporary until everything is `ListItem`.
+                    ui.spacing_mut().item_spacing.y = ui.ctx().style().spacing.item_spacing.y;
+
+                    if let Some(new_entity_path_filter) = self.entity_path_filter_ui(
+                        ctx,
+                        ui,
+                        *view_id,
+                        &view.contents.entity_path_filter,
+                        &view.space_origin,
+                    ) {
+                        view.contents
+                            .set_entity_path_filter(ctx, &new_entity_path_filter);
+                    }
+                })
+                .header_response
+                .on_hover_text(
+                    "The entity path query consists of a list of include/exclude rules \
+                that determines what entities are part of this view",
+                );
+        }
+
+        if let Some(view) = blueprint.view(view_id) {
+            let view_class = view.class(ctx.space_view_class_registry);
+            let view_state = view_states.get_mut_or_create(view.id, view_class);
+
+            ui.section_collapsing_header("View properties")
+                .show(ui, |ui| {
+                    // TODO(#6075): Because `list_item_scope` changes it. Temporary until everything is `ListItem`.
+                    ui.spacing_mut().item_spacing.y = ui.ctx().style().spacing.item_spacing.y;
+
+                    let cursor = ui.cursor();
+
+                    if let Err(err) =
+                        view_class.selection_ui(ctx, ui, view_state, &view.space_origin, view.id)
+                    {
+                        re_log::error_once!(
+                            "Error in view selection UI (class: {}, display name: {}): {err}",
+                            view.class_identifier(),
+                            view_class.display_name(),
+                        );
+                    }
+
+                    if cursor == ui.cursor() {
+                        ui.weak("(none)");
+                    }
+                });
+
+            let view_ctx = view.bundle_context_with_state(ctx, view_state);
+            view_components_defaults_section_ui(&view_ctx, ui, view);
+        }
+
+        if let Some(view) = blueprint.view(view_id) {
+            visible_time_range_ui_for_view(ctx, ui, view);
+        }
+    }
+
+    /// Returns a new filter when the editing is done, and there has been a change.
+    fn entity_path_filter_ui(
+        &mut self,
+        ctx: &ViewerContext<'_>,
+        ui: &mut egui::Ui,
+        view_id: SpaceViewId,
+        filter: &EntityPathFilter,
+        origin: &EntityPath,
+    ) -> Option<EntityPathFilter> {
         fn syntax_highlight_entity_path_filter(
             style: &egui::Style,
             mut string: &str,
@@ -506,18 +509,13 @@ The last rule matching `/world/house` is `+ /world/**`, so it is included.
             ));
         }
 
-        ui.horizontal(|ui| {
-            ui.help_hover_button()
-                .on_hover_ui(entity_path_filter_help_ui);
-
-            if ui
-                .button("Edit")
-                .on_hover_text("Modify the entity query using the editor")
-                .clicked()
-            {
-                self.space_view_entity_modal.open(view_id);
-            }
-        });
+        if ui
+            .button("Edit")
+            .on_hover_text("Modify the entity query using the editor")
+            .clicked()
+        {
+            self.space_view_entity_modal.open(view_id);
+        }
 
         // Apply the edit.
         let new_filter = EntityPathFilter::parse_forgiving(&filter_string, &Default::default());

crates/re_selection_panel/src/space_view_space_origin_ui.rs

@@ -206,8 +206,7 @@ fn space_view_space_origin_widget_editing_ui(
 
         let excluded_count = space_view_suggestions.len() - filtered_space_view_suggestions.len();
         if excluded_count > 0 {
-            ui.list_item().interactive(false).show_flat(
-                ui,
+            ui.list_item_flat_noninteractive(
                 list_item::LabelContent::new(format!("{excluded_count} hidden suggestions"))
                     .weak(true)
                     .italics(true),

crates/re_selection_panel/src/visible_time_range_ui.rs

@@ -174,9 +174,10 @@ fn query_range_ui(
 
     let mut interacting_with_controls = false;
 
-    let default_open = false;
-    let collapsing_response =
-        ui.large_collapsing_header("Visible time range", default_open, |ui| {
+    let collapsing_response = ui
+        .section_collapsing_header("Visible time range")
+        .default_open(false)
+        .show(ui, |ui| {
             ui.horizontal(|ui| {
                 ui.re_radio_value(has_individual_time_range, false, "Default")
                     .on_hover_text(if is_space_view {

crates/re_selection_panel/src/visualizer_ui.rs

@@ -37,25 +37,24 @@ pub fn visualizer_ui(
         &active_visualizers,
     );
 
-    ui.large_collapsing_header_with_button(
-        "Visualizers",
-        true,
-        |ui| {
+    let button = re_ui::HeaderMenuButton::new(&re_ui::icons::ADD, |ui| {
+        menu_add_new_visualizer(
+            ctx,
+            ui,
+            &data_result,
+            &active_visualizers,
+            &available_inactive_visualizers,
+        );
+    })
+    .enabled(!available_inactive_visualizers.is_empty())
+    .hover_text("Add additional visualizers")
+    .disabled_hover_text("No additional visualizers available");
+
+    ui.section_collapsing_header("Visualizers")
+        .button(button)
+        .show(ui, |ui| {
             visualizer_ui_impl(ctx, ui, &data_result, &active_visualizers);
-        },
-        re_ui::HeaderMenuButton::new(&re_ui::icons::ADD, |ui| {
-            menu_add_new_visualizer(
-                ctx,
-                ui,
-                &data_result,
-                &active_visualizers,
-                &available_inactive_visualizers,
-            );
-        })
-        .enabled(!available_inactive_visualizers.is_empty())
-        .hover_text("Add additional visualizers")
-        .disabled_hover_text("No additional visualizers available"),
-    );
+        });
 }
 
 pub fn visualizer_ui_impl(
@@ -88,7 +87,13 @@ pub fn visualizer_ui_impl(
     };
 
     list_item::list_item_scope(ui, "visualizers", |ui| {
-        ui.spacing_mut().item_spacing.y = 0.0;
+        if active_visualizers.is_empty() {
+            ui.list_item_flat_noninteractive(
+                list_item::LabelContent::new("none")
+                    .weak(true)
+                    .italics(true),
+            );
+        }
 
         for &visualizer_id in active_visualizers {
             let default_open = true;

crates/re_time_panel/src/lib.rs

@@ -613,6 +613,7 @@ impl TimePanel {
         let list_item::ShowCollapsingResponse {
             item_response: response,
             body_response,
+            ..
         } = ui
             .list_item()
             .selected(is_selected)

crates/re_ui/examples/re_ui_example/main.rs

@@ -243,17 +243,14 @@ impl eframe::App for ExampleApp {
 
             // ---
 
-            ui.large_collapsing_header_with_button(
-                "Data",
-                true,
-                |ui| {
-                    ui.label("Some data here");
-                },
-                re_ui::HeaderMenuButton::new(&re_ui::icons::ADD, |ui| {
+            ui.section_collapsing_header("Data")
+                .button(re_ui::HeaderMenuButton::new(&re_ui::icons::ADD, |ui| {
                     ui.weak("empty");
-                }),
-            );
-            ui.large_collapsing_header("Blueprint", true, |ui| {
+                }))
+                .show(ui, |ui| {
+                    ui.label("Some data here");
+                });
+            ui.section_collapsing_header("Blueprint").show(ui, |ui| {
                 ui.style_mut().wrap_mode = Some(egui::TextWrapMode::Extend);
                 ui.label("Some blueprint stuff here, that might be wide.");
                 ui.re_checkbox(&mut self.dummy_bool, "Checkbox");

crates/re_ui/src/design_tokens.rs

@@ -378,6 +378,12 @@ impl DesignTokens {
         Self::small_icon_size()
     }
 
+    /// The color for the background of [`crate::SectionCollapsingHeader`].
+    pub fn section_collapsing_header_color() -> egui::Color32 {
+        // same as visuals.widgets.inactive.bg_fill
+        egui::Color32::from_gray(50)
+    }
+
     /// The color we use to mean "loop this selection"
     pub fn loop_selection_color() -> egui::Color32 {
         egui::Color32::from_rgb(1, 37, 105) // from figma 2023-02-09

crates/re_ui/src/lib.rs

@@ -11,6 +11,7 @@ pub mod drag_and_drop;
 pub mod icons;
 pub mod list_item;
 pub mod modal;
+mod section_collapsing_header;
 pub mod toasts;
 mod ui_ext;
 
@@ -21,8 +22,9 @@ pub use self::{
     design_tokens::DesignTokens,
     icons::Icon,
     layout_job_builder::LayoutJobBuilder,
+    section_collapsing_header::{HeaderMenuButton, SectionCollapsingHeader},
     syntax_highlighting::SyntaxHighlighting,
-    ui_ext::{HeaderMenuButton, UiExt},
+    ui_ext::UiExt,
 };
 
 // ---------------------------------------------------------------------------

crates/re_ui/src/list_item/label_content.rs

@@ -14,7 +14,7 @@ pub struct LabelContent<'a> {
     italics: bool,
 
     label_style: LabelStyle,
-    icon_fn: Option<Box<dyn FnOnce(&egui::Ui, egui::Rect, egui::style::WidgetVisuals) + 'a>>,
+    icon_fn: Option<Box<dyn FnOnce(&mut egui::Ui, egui::Rect, egui::style::WidgetVisuals) + 'a>>,
     buttons_fn: Option<Box<dyn FnOnce(&mut egui::Ui) -> egui::Response + 'a>>,
     always_show_buttons: bool,
 
@@ -115,7 +115,7 @@ impl<'a> LabelContent<'a> {
     #[inline]
     pub fn with_icon_fn(
         mut self,
-        icon_fn: impl FnOnce(&egui::Ui, egui::Rect, egui::style::WidgetVisuals) + 'a,
+        icon_fn: impl FnOnce(&mut egui::Ui, egui::Rect, egui::style::WidgetVisuals) + 'a,
     ) -> Self {
         self.icon_fn = Some(Box::new(icon_fn));
         self