import { ChangeDetectorRef, EventEmitter, OnInit } from '@angular/core';
import { Subject } from 'rxjs';
/**
 * Change event object that is emitted when the user selects a
 * different page size or navigates to another page.
 */
export declare class PageEvent {
    /** The current page index. */
    pageIndex: number;
    /**
     * Index of the page that was selected previously.
     */
    previousPageIndex: number;
    /** The current page size */
    pageSize: number;
    /** The current total number of items being paged */
    length: number;
}
/**
 * Component to provide navigation between paged inforsukaion. Displays the size of the current
 * page, user-selectable options to change that size, what items are being shown, and
 * navigational button to go to the previous or next page.
 */
export declare class Pagination implements OnInit {
    private _changeDetectorRef;
    private _initialized;
    initialized: Subject<unknown>;
    disabled: boolean;
    baseClass: boolean;
    /** The zero-based page index of the displayed list of items. Defaulted to 0. */
    pageIndex: number;
    private _pageIndex;
    /** The length of the total number of items that are being paginated. Defaulted to 0. */
    length: number;
    private _length;
    /** Number of items to display on a page. By default set to 20. */
    pageSize: number;
    private _pageSize;
    /** The set of provided page size options to display to the user. */
    pageSizeOptions: number[];
    private _pageSizeOptions;
    /** Whether to hide the page size selection UI from the user. */
    hidePageSize: boolean;
    private _hidePageSize;
    /** Whether to show the first/last buttons UI to the user. */
    showFirstLastButtons: boolean;
    private _showFirstLastButtons;
    /** Event emitted when the pagination changes the page size or page index. */
    readonly page: EventEmitter<PageEvent>;
    /** Displayed set of page size options. Will be sorted and include current page size. */
    _displayedPageSizeOptions: number[];
    /** Displayed pages array */
    _pagesArray: any[];
    constructor(_changeDetectorRef: ChangeDetectorRef);
    ngOnInit(): void;
    /** Advances to the next page if it exists. */
    nextPage(): void;
    /** Move back to the previous page if it exists. */
    previousPage(): void;
    /** Move to the first page if not already there. */
    firstPage(): void;
    /** Move to the last page if not already there. */
    lastPage(): void;
    goToPage(page: number): void;
    /** Whether there is a previous page. */
    hasPreviousPage(): boolean;
    /** Whether there is a next page. */
    hasNextPage(): boolean;
    /** Calculate the number of pages */
    getNumberOfPages(): number;
    /** Calculate the page range */
    getRangeLabel: (page: number, pageSize: number, length: number) => string;
    /**
     * Changes the page size so that the first item displayed on the page will still be
     * displayed using the new page size.
     *
     * For example, if the page size is 10 and on the second page (items indexed 10-19) then
     * switching so that the page size is 5 will set the third page as the current page so
     * that the 10th item will still be displayed.
     */
    _changePageSize(pageSize: number): void;
    /** Checks whether the buttons for going forwards should be disabled. */
    _nextButtonsDisabled(): boolean;
    /** Checks whether the buttons for going backwards should be disabled. */
    _previousButtonsDisabled(): boolean;
    /**
     * Updates the list of page size options to display to the user. Includes making sure that
     * the page size is an option and that the list is sorted.
     */
    private _updateDisplayedPageSizeOptions;
    private _updateDisplayedPagesArray;
    /** Emits an event notifying that a change of the pagination's properties has been triggered. */
    private _emitPageEvent;
}