import { ElementRef, OnDestroy, TemplateRef } from "@angular/core";
import { DropdownItemComponent } from "../dropdown-item/dropdown-item.component";
import { DropdownItemConfig, SubmenuRequestEvent } from "../dropdown.types";
import { DropdownMenuBodyDirective } from "./dropdown-menu-body.directive";
import { DropdownMenuFooterDirective } from "./dropdown-menu-footer.directive";
import { DropdownMenuHeaderDirective } from "./dropdown-menu-header.directive";
import * as i0 from "@angular/core";
export declare class DropdownMenuComponent implements OnDestroy {
    private static readonly SUB_MENU_OFFSET;
    private readonly elementRef;
    private pendingPositioningFrameId;
    private readonly dropdownService;
    private readonly overlayService;
    private readonly viewContainerRef;
    readonly isInParentWithOverlay: import("@angular/core").InputSignal<boolean>;
    readonly items: import("@angular/core").InputSignal<DropdownItemConfig[]>;
    readonly menuId: import("@angular/core").InputSignal<string | undefined>;
    readonly maxHeight: import("@angular/core").InputSignal<number | null>;
    readonly itemEvent: import("@angular/core").OutputEmitterRef<{
        event: Event;
        id: string;
        item?: DropdownItemConfig;
    }>;
    readonly widthStyle: import("@angular/core").Signal<string | undefined>;
    readonly isOpen: import("@angular/core").InputSignal<boolean>;
    readonly width: import("@angular/core").InputSignal<string | null>;
    readonly closingMenu: import("@angular/core").OutputEmitterRef<void>;
    readonly menuStyle: import("@angular/core").Signal<{
        width: string | undefined;
        "max-width": string | undefined;
        "max-height": string | undefined;
    }>;
    readonly headerDirective: import("@angular/core").Signal<DropdownMenuHeaderDirective | undefined>;
    readonly footerDirective: import("@angular/core").Signal<DropdownMenuFooterDirective | undefined>;
    readonly bodyDirective: import("@angular/core").Signal<DropdownMenuBodyDirective | undefined>;
    readonly headerTemplate: import("@angular/core").InputSignal<TemplateRef<HTMLElement> | undefined>;
    readonly footerTemplate: import("@angular/core").InputSignal<TemplateRef<HTMLElement> | undefined>;
    readonly bodyTemplate: import("@angular/core").InputSignal<TemplateRef<HTMLElement> | undefined>;
    readonly headerContentRef: import("@angular/core").Signal<ElementRef<HTMLElement> | undefined>;
    readonly footerContentRef: import("@angular/core").Signal<ElementRef<HTMLElement> | undefined>;
    readonly bodyContentRef: import("@angular/core").Signal<ElementRef<HTMLElement> | undefined>;
    readonly itemComponents: import("@angular/core").Signal<readonly DropdownItemComponent[]>;
    readonly hasHeaderContent: import("@angular/core").Signal<boolean>;
    readonly hasFooterContent: import("@angular/core").Signal<boolean>;
    readonly hasBodyContent: import("@angular/core").Signal<boolean>;
    readonly overlayLayerLevel: import("@angular/core").Signal<"low" | "high">;
    getChildMenuId(itemIndex: number): string;
    handleItemEvent(itemEvent: {
        event: Event;
        id: string;
        item?: DropdownItemConfig;
    }): void;
    handleSubmenuRequest(event: SubmenuRequestEvent): void;
    ngOnDestroy(): void;
    private cancelPendingPositioningFrame;
    onKeyDown(event: KeyboardEvent): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<DropdownMenuComponent, never>;
    static ɵcmp: i0.ɵɵComponentDeclaration<DropdownMenuComponent, "rte-dropdown-menu", never, { "isInParentWithOverlay": { "alias": "isInParentWithOverlay"; "required": false; "isSignal": true; }; "items": { "alias": "items"; "required": false; "isSignal": true; }; "menuId": { "alias": "menuId"; "required": false; "isSignal": true; }; "maxHeight": { "alias": "maxHeight"; "required": false; "isSignal": true; }; "isOpen": { "alias": "isOpen"; "required": false; "isSignal": true; }; "width": { "alias": "width"; "required": false; "isSignal": true; }; "headerTemplate": { "alias": "headerTemplate"; "required": false; "isSignal": true; }; "footerTemplate": { "alias": "footerTemplate"; "required": false; "isSignal": true; }; "bodyTemplate": { "alias": "bodyTemplate"; "required": false; "isSignal": true; }; }, { "itemEvent": "itemEvent"; "closingMenu": "closingMenu"; }, ["headerDirective", "footerDirective", "bodyDirective"], ["[dropdown-menu-header]", "[dropdown-menu-body]", "[dropdown-menu-footer]"], true, never>;
}