import { AfterViewInit, ChangeDetectorRef, ElementRef, EventEmitter, OnInit, QueryList } from '@angular/core';
import { BehaviorSubject } from 'rxjs';
/**
 * Define the user object interface
 */
export interface TsUser {
    /**
     * The user's full name
     */
    fullName: string;
}
/**
 * Base allowed keys for an item passed to the {@link TsNavigationComponent}
 */
export interface NavigationItemBase {
    /**
     * The value to use as the item text
     */
    name: string;
    /**
     * Define if the item should only be allowed in the secondary navigation
     */
    alwaysHidden: boolean;
    /**
     * Define if the item is disabled
     */
    isDisabled?: boolean;
    /**
     * Define if the item is for admin functionality only
     */
    isForAdmin?: boolean;
}
/**
 * Link specific keys for an item passed to the {@link TsNavigationComponent}
 */
export interface TsNavigationLinkItem extends NavigationItemBase {
    /**
     * The destination for items with a 'navigate' action. Single strings are used for external
     * locations while an array of strings are used for routerLinks
     */
    destination: string | string[];
    /**
     * Whether this link should navigate via the router or standard href
     */
    isExternal?: boolean;
}
/**
 * Action specific keys for an item passed to the {@link TsNavigationComponent}
 */
export interface TsNavigationActionItem extends NavigationItemBase {
    /**
     * The action to emit upon interaction
     */
    action: {
        type: string;
    };
}
/**
 * Determine if a navigation item is a {@link TsNavigationLinkItem}
 *
 * @param x - The item to check
 * @returns True if the item is a TsNavigationLinkItem
 */
export declare const isLinkItem: (x: TsNavigationLinkItem | TsNavigationActionItem) => x is TsNavigationLinkItem;
/**
 * Define the allowed keys and types for an item passed to the {@link TsNavigationComponent}
 */
export declare type TsNavigationItem = TsNavigationLinkItem | TsNavigationActionItem;
/**
 * Define the expected response from the {@link TsNavigationComponent} emitter
 */
export interface TsNavigationPayload {
    /**
     * The mouse click event
     */
    event: MouseEvent;
    /**
     * The selected item
     */
    action: {
        type: string;
    };
}
/**
 * This is the navigation UI Component
 *
 * @example
 * <ts-navigation
 *              [items]="navigationItems$ | async"
 *              [user]="currentUser$ | async"
 *              userNameLength="20"
 *              welcomeMessage="Hi!"
 *              welcomeMsgLength="25"
 *              (itemSelected)="myMethod($event)"
 * ></ts-navigation>
 *
 * <example-url>https://getterminus.github.io/ui-demos-release/components/navigation</example-url>
 */
export declare class TsNavigationComponent implements OnInit, AfterViewInit {
    private changeDetectorRef;
    /**
     * Store a pristine copy of the navigation items
     */
    private pristineItems;
    /**
     * Getter to return the available navigation width
     *
     * @returns The available navigation space
     */
    private get availableSpace();
    /**
     * Define an array of widths at which to break the navigation
     */
    private breakWidths;
    /**
     * Define the list of hidden items
     */
    hiddenItems: BehaviorSubject<TsNavigationItem[]>;
    /**
     * Getter to return the user's full name if it exists
     *
     * @returns The user's full name
     */
    get usersFullName(): string | null;
    /**
     * The collection of visible navigation items
     */
    visibleItems: BehaviorSubject<TsNavigationItem[]>;
    /**
     * Getter to return the count of visible items
     *
     * @returns The number of visible items
     */
    get visibleItemsLength(): number;
    /**
     * Accept the array of navigation items and trigger setup
     *
     * @param value
     */
    set items(value: TsNavigationItem[]);
    /**
     * Accept the user data
     */
    user: TsUser;
    /**
     * Define the user name length
     */
    userNameLength: number;
    /**
     * Define the welcome message
     */
    welcomeMessage: string;
    /**
     * Define the welcome message length
     */
    welcomeMsgLength: number;
    /**
     * Element reference for visible list items
     */
    visibleItemsList: ElementRef;
    /**
     * Query list of all elements from the visible items list
     */
    visibleLinkElement: QueryList<ElementRef>;
    /**
     * Emit the click event with the {@link TsNavigationPayload}
     */
    readonly action: EventEmitter<TsNavigationPayload>;
    /**
     * Trigger a layout update when the window resizes
     */
    onResize(): void;
    constructor(changeDetectorRef: ChangeDetectorRef);
    /**
     * Set up initial link groups
     */
    ngOnInit(): void;
    /**
     * Trigger initial layout update after the view initializes
     */
    ngAfterViewInit(): void;
    /**
     * Generate the array of breakWidths
     */
    private generateBreakWidths;
    /**
     * Clone the nav items and split into the initially visible/hidden lists
     *
     * @param items - The complete list of navigation items
     */
    private setUpInitialArrays;
    /**
     * Move items between the two lists as required by the available space
     */
    private updateLists;
    /**
     * If the destination is a string and begins with `http`
     *
     * @param destination - The destination to check
     * @returns Boolean determining if the link is external
     */
    isExternalLink(destination: string | string[]): boolean;
    /**
     * Function for tracking for-loops changes
     *
     * @param index - The item index
     * @returns The unique ID
     */
    trackByFn(index: any): number;
}