import { MenuItem, ShellMenu } from './ShellMenu';
export interface MenuItemState {
    collapsed: boolean;
}
export declare class ShellMenuState {
    id: string;
    menuItemStateById: {
        [id: string]: MenuItemState;
    };
    activeItemId: string;
}
export declare function loadShellMenuStates(): ShellMenuState[];
export declare function loadActiveShellMenuState(): string;
export declare function setActiveShellMenuState(id: string): void;
export declare function saveShellMenuState(shellMenuState: ShellMenuState, active: boolean): void;
export declare function getItemState(shellMenuState: ShellMenuState, itemId: string): MenuItemState;
export declare function toggleFolderCollapse(shellMenuState: ShellMenuState, itemId: string): Promise<ShellMenuState>;
export declare function findShellMenuStateId(menu: ShellMenu, item: MenuItem): string;
export declare function activateItem(item: MenuItem, menu: ShellMenu, shellMenuState?: ShellMenuState): void;