import { ElementRef, EventEmitter, OnDestroy, OnInit } from '@angular/core';
import { Page } from 'ionic-angular/navigation/nav-util';
import { ViewController } from 'ionic-angular';
export interface NavButton {
    label: string;
    page?: Page | string;
    params?: any;
    icon?: string;
    iconColor?: string;
    number?: number;
}
export declare class NavButtonBar implements OnInit, OnDestroy {
    private elRef;
    viewCtrl: ViewController;
    type: string;
    items: Array<NavButton>;
    itemClick: EventEmitter<NavButton>;
    private watches;
    boxStyle: any;
    contentStyle: any;
    constructor(elRef: ElementRef, viewCtrl: ViewController);
    ngOnInit(): void;
    ngOnDestroy(): void;
    calculate(): void;
    onClick(item: NavButton): void;
}