import { AfterContentChecked, QueryList, ChangeDetectorRef, EventEmitter } from '@angular/core';
import { AptoTabComponent } from './tab.component';
export declare class AptoTabChangeEvent {
    index: number;
    tab: AptoTabComponent;
}
export declare class AptoTabGroupComponent implements AfterContentChecked {
    private _changeDetectorRef;
    private _groupId;
    private _selectedIndex;
    private _indexToSelect;
    selectedIndex: number | null;
    readonly groupId: number;
    readonly selectedTabChange: EventEmitter<AptoTabChangeEvent>;
    tabs: QueryList<AptoTabComponent>;
    constructor(_changeDetectorRef: ChangeDetectorRef);
    handleClick(e: Event, tab: AptoTabComponent, tabNum: number): void;
    getAriaLabelledby(i: number): string;
    getTabPaneId(i: number): string;
    getTabNavId(i: number): string;
    getTabNavPaneId(i: number): string;
    keyDownHandler(event: KeyboardEvent): void;
    private _createChangeEvent;
    private _setFirstItemActive;
    private _setNextItemActive;
    private _setPreviousItemActive;
    private _setLastItemActive;
    ngAfterContentChecked(): void;
}