Function applyToggleCollapsed

applyToggleCollapsed(container: HTMLElement, classPrefix: string): boolean
Toggles the <classPrefix>--collapsed modifier on a control container.
Parameters
- container: HTMLElement
  The control's root element.
- classPrefix: string
  BEM block prefix, e.g. "gl-layer-manager".
Returns boolean
true when the container is now collapsed.
- Defined in src/kernel/ui/collapsible-toggle.ts:60