Struct CollapsibleSection 

pub struct CollapsibleSection<'a> { /* private fields */ }

A reusable collapsible section component for detail panels.

The section has a clickable header that toggles between expanded and collapsed states. When expanded, the content area is visible. When collapsed, only the header is shown with an indicator showing the collapsed state.

Example

let mut collapsed_sections = HashMap::new();

CollapsibleSection::new("work_summaries", "Work Summaries")
    .default_expanded(false)
    .show(ui, &mut collapsed_sections, |ui| {
        // Section content here
        ui.label("Content goes here");
    });

Implementations

impl<'a> CollapsibleSection<'a>

pub fn new(id: &'a str, title: &'a str) -> Self

Create a new collapsible section with the given ID and title.

The ID should be unique within the context where the section is used, as it’s used to track the collapsed state in the state map.

pub fn default_expanded(self, expanded: bool) -> Self

Set whether this section should be expanded by default.

When the section is first rendered (or when its state is not in the map), this determines whether it starts expanded or collapsed.

pub fn show<R>( self, ui: &mut Ui, collapsed_state: &mut HashMap<String, bool>, add_contents: impl FnOnce(&mut Ui) -> R, ) -> Response

Render the collapsible section and execute the content callback if expanded.

Arguments

• ui - The egui UI context
• collapsed_state - Map of section IDs to their collapsed state (true = collapsed)
• add_contents - Callback to render the section content when expanded

Returns

The response from the header click interaction.