import * as i0 from "@angular/core";
/**
 * Directive to mark an element as dropdown menu content
 * This allows the trigger to reference the content without ng-template
 */
export declare class DropdownMenuContentDirective {
    /**
     * Unique identifier for this menu content
     */
    contentId: import("@angular/core").InputSignal<string>;
    private readonly elementRef;
    /**
     * Get the native element for CDK menu trigger
     */
    get element(): HTMLElement;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropdownMenuContentDirective, never>;
    static ɵdir: i0.ɵɵDirectiveDeclaration<DropdownMenuContentDirective, "[stDropdownMenuContent]", ["dropdownMenuContent"], { "contentId": { "alias": "contentId"; "required": true; "isSignal": true; }; }, {}, never, never, true, never>;
}
/**
 * Service to manage dropdown menu content references
 */
export declare class DropdownMenuService {
    private readonly contentRegistry;
    /**
     * Register a menu content directive
     */
    registerContent(id: string, directive: DropdownMenuContentDirective): void;
    /**
     * Unregister a menu content directive
     */
    unregisterContent(id: string): void;
    /**
     * Get a registered menu content by ID
     */
    getContent(id: string): DropdownMenuContentDirective | undefined;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropdownMenuService, never>;
    static ɵprov: i0.ɵɵInjectableDeclaration<DropdownMenuService>;
}