interface RefShim<T> {
  current: T | null;
}
export interface ActionContext {
  type: string;
  headerRef: RefShim<HTMLElement>;
  contentRef: RefShim<HTMLElement>;
}
export interface ActionConfig {
  id: string;
  orderPriority?: number;
  mountContent: (container: HTMLElement, context: ActionContext) => void;
  updateContent?: (container: HTMLElement, context: ActionContext) => void;
  unmountContent: (container: HTMLElement) => void;
}
type ActionRegistrationListener = (action: Array<ActionConfig>) => void;
export interface ActionsApiPublic {
  registerAction(config: ActionConfig): void;
  clearRegisteredActionsForTesting(): void;
}
export interface ActionsApiInternal {
  onActionRegistered(listener: ActionRegistrationListener): () => void;
}
export declare class ActionButtonsController {
  private listeners;
  private actions;
  private scheduleUpdate;
  registerAction: (action: ActionConfig) => void;
  clearRegisteredActionsForTesting: () => void;
  onActionRegistered: (listener: ActionRegistrationListener) => () => void;
  installPublic(api?: Partial<ActionsApiPublic>): ActionsApiPublic;
  installInternal(internalApi?: Partial<ActionsApiInternal>): ActionsApiInternal;
}
export {};