design-comuni-plone-theme/src/components/ItaliaTheme/Pagination/createPaginationItems/itemFactories.js

Volto Theme for Italia design guidelines

/**
 * @param {number} pageNumber
 * @return {Object}
 */
export const createEllipsisItem = (pageNumber) => ({
  active: false,
  type: 'ellipsisItem',
  value: pageNumber,
});

/**
 * @return {Object}
 */
export const createFirstPage = () => ({
  active: false,
  type: 'firstItem',
  value: 1,
});

/**
 * @param {number} activePage
 * @return {Object}
 */
export const createPrevItem = (activePage) => ({
  active: false,
  type: 'prevItem',
  value: Math.max(1, activePage - 1),
});

/**
 * @param {number} activePage
 * @return {function}
 */
export const createPageFactory = (activePage) => (pageNumber) => ({
  active: activePage === pageNumber,
  type: 'pageItem',
  value: pageNumber,
});

/**
 * @param {number} activePage
 * @param {number} totalPages
 * @return {Object}
 */
export const createNextItem = (activePage, totalPages) => ({
  active: false,
  type: 'nextItem',
  value: Math.min(activePage + 1, totalPages),
});

/**
 * @param {number} totalPages
 * @return {Object}
 */
export const createLastItem = (totalPages) => ({
  active: false,
  type: 'lastItem',
  value: totalPages,
});