Struct Sections 

pub struct Sections { /* private fields */ }

Collapsible sidebar sections (docs/navigation.md), declared with Nav::sections. The state is the set of COLLAPSED section ids; missing ids default to expanded, and temporarily filtered-out ids are retained. Pair with Nav::section_id for stable identities; unkeyed headings use their first route as a fallback identity. Takes precedence over Nav::reorder_items; combined collapse/reordering is not supported.

Implementations

impl Sections

pub fn collapsible(collapsed: impl Binding<HashSet<String>>) -> Sections

Sections whose collapsed set is app state (a Signal<HashSet<String>> or any binding).

pub fn restored(key: impl Into<String>) -> Sections

Sections whose collapsed set is persisted under key through the installed NavStore, restored at build and saved on every change.

pub fn on_change(self, f: impl Fn(String, bool) + 'static) -> Sections

Reports user/scripting disclosure after the collapsed set changed. Programmatic state writes and restoration do not call it.