GlassDisclosureGroup class

A collapsible disclosure accordion group rendered with liquid glass styling, providing direct parity with SwiftUI's DisclosureGroup.

GlassDisclosureGroup presents a header row with an interactive title, optional leading icon, and an animated disclosure chevron. Tapping toggles the visibility of its child rows with a smooth curve-driven height transition.

Modes

1. Grouped mode (default constructor): Designed for placement inside GlassGroupedSection or GlassContainer.card. Shares the outer glass platter.
2. Standalone mode (GlassDisclosureGroup.standalone): Manages its own independent GlassContainer layer with superellipse curvature.

Usage

GlassGroupedSection(
  header: const Text('PREFERENCES'),
  children: [
    GlassDisclosureGroup(
      leading: const Icon(CupertinoIcons.bell),
      title: const Text('Notifications'),
      initiallyExpanded: true,
      children: [
        GlassListTile(
          title: const Text('Allow Alerts'),
          trailing: CupertinoSwitch(value: true, onChanged: (v) {}),
        ),
        GlassListTile(
          title: const Text('Show Previews'),
          subtitle: const Text('When Unlocked'),
          trailing: GlassListTile.chevron,
        ),
      ],
    ),
  ],
)