@bigfishtv/cockpit/es/components/Pagination.js

import React from 'react';
import range from 'lodash/range';
import classnames from 'classnames';

import QueryLink from './QueryLink';

var Pagination = function Pagination(_ref) {
	var count = _ref.count,
	    current_page = _ref.current_page,
	    has_next_page = _ref.has_next_page,
	    has_prev_page = _ref.has_prev_page,
	    limit = _ref.limit,
	    page_count = _ref.page_count,
	    _ref$modulus = _ref.modulus,
	    modulus = _ref$modulus === undefined ? 8 : _ref$modulus;
	return page_count < 2 ? React.createElement('nav', null) : React.createElement(
		'nav',
		{ className: 'button-group' },
		current_page > modulus / 2 + 1 && React.createElement(
			QueryLink,
			{ query: { page: 1 }, className: 'button button-xsmall' },
			React.createElement(
				'span',
				{ 'aria-hidden': true },
				'\xAB'
			),
			React.createElement(
				'span',
				{ className: 'screen-reader' },
				'First'
			)
		),
		paginationNumbers(current_page, page_count, modulus).map(function (page) {
			return React.createElement(
				QueryLink,
				{
					key: page,
					query: { page: page },
					className: classnames('button', 'button-xsmall', { 'button-primary': page === current_page }) },
				page
			);
		}),
		current_page < page_count - modulus / 2 && React.createElement(
			QueryLink,
			{ query: { page: page_count }, className: 'button button-xsmall' },
			React.createElement(
				'span',
				{ 'aria-hidden': true },
				'\xBB'
			),
			React.createElement(
				'span',
				{ className: 'screen-reader' },
				'Last'
			)
		)
	);
};

export default Pagination;

export function paginationNumbers(current_page, page_count) {
	var modulus = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 8;

	if (page_count <= modulus + 1) {
		return range(1, page_count + 1);
	}

	var half = Math.floor(modulus / 2);
	var end = current_page + half;

	if (end > page_count) {
		end = page_count;
	}

	var start = current_page - (modulus - (end - current_page));

	if (start <= 1) {
		start = 1;
		end = current_page + (modulus - current_page) + 1;
	}

	return range(start, end + 1);
}