import { EventEmitter } from '@angular/core';
import { DropdownGroupOption } from './dropdown_group_option';
export declare class DropdownGroupOptions<T> {
    value: T;
    disabled: boolean;
    optionGroup: {
        groupName: string;
        valueList: DropdownGroupOption<T>[];
    }[];
    valueUpdateEmitter: EventEmitter<T>;
    typable: boolean;
    placeholder: string;
    searchPlaceholder: string;
    appendToBody: boolean;
    noMatchedItemStr: string;
    constructor(options: {
        value?: T;
        key?: string;
        disabled?: boolean;
        placeholder?: string;
        searchPlaceholder?: string;
        optionGroup: {
            groupName: string;
            valueList: DropdownGroupOption<T>[];
        }[];
        typable?: boolean;
        appendToBody?: boolean;
        noMatchedItemStr?: string;
    });
}