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<span class="cline-any cline-neutral">&nbsp;</span></td><td class="text"><pre class="prettyprint lang-js">/**
* Pagination Info
* @typedef {Object} PagingInfo
* @property {boolean} hasRecords
* @property {number} previousPage
* @property {number} nextPage
* @property {number} firstPage
* @property {number} lastPage
* @property {number} totalPages
* @property {number} firstRecord
* @property {number} totalRecords
* @property {number} totalRecords
* @property {PageInfo} currentPage
* @property {PageInfo[]} pages
*/
&nbsp;
/**
* @typedef {Object} PageInfo
* @property {boolean} isEllipsis
* @property {number} page
* @property {number} [startRecord]
* @property {number} [endRecord]
*/
&nbsp;
/**
* @param {number} totalRecords
* @param {number} pageSize
* @param {number} pageNumber
* @returns {PagingInfo}
*/
export function getPagingInfo(totalRecords, pageSize = 10, pageNumber = 1) {
let hasRecords = totalRecords &gt; 0;
let totalPages = Math.ceil(totalRecords / pageSize);
// COREWEB-1444 normalise current page
if (pageNumber &gt; totalPages) {
pageNumber = totalPages;
}
let firstPage = (hasRecords &amp;&amp; pageNumber &gt;= 1) ? 1 : null;
let previousPage = (hasRecords &amp;&amp; pageNumber &gt; 1) ? pageNumber - 1 : null;
let nextPage = (hasRecords &amp;&amp; pageNumber &lt; totalPages) ? pageNumber + 1 : null;
let lastPage = (hasRecords &amp;&amp; pageNumber &lt;= totalPages) ? totalPages : null;
let pages = Array.from(new Array(totalPages));
pages = pages.map((notUsed, index) =&gt; _pageDetails(totalRecords, pageSize, index + 1));
return {
totalPages,
pages,
totalRecords,
firstPage,
previousPage,
nextPage,
lastPage,
currentPage: hasRecords ? pages[pageNumber - 1] : null,
firstRecord: hasRecords ? 1 : 0,
lastRecord: totalRecords
};
}
&nbsp;
/**
* @param {PagingInfo} pagingInfo
* @param {number} maxNumberOfElements
* @param {number} truncatedToShow
* @returns {PageInfo[]}
*/
export function calculatePagingWithEllipsis(pagingInfo, maxNumberOfElements = 10, truncatedToShow = 3) {
if (pagingInfo.totalPages &lt;= maxNumberOfElements) {
return pagingInfo.pages;
}
let pagingElementsTmp = [];
let hasLeftEllipsis = (pagingInfo.currentPage.page) &gt; truncatedToShow + 3;
let hasRightEllipsis = (pagingInfo.totalPages - pagingInfo.currentPage.page) &gt; truncatedToShow + 2;
let leftPaddingElements = truncatedToShow;
if (!hasRightEllipsis) {
leftPaddingElements += truncatedToShow - pagingInfo.totalPages + pagingInfo.currentPage.page + 2;
}
if (!hasLeftEllipsis) {
leftPaddingElements += 1;
}
let rightPaddingElements = truncatedToShow;
if (!hasLeftEllipsis) {
rightPaddingElements += truncatedToShow - pagingInfo.currentPage.page + 3;
}
if (!hasRightEllipsis) {
rightPaddingElements += 1;
}
&nbsp;
let startIndex = pagingInfo.currentPage.page - leftPaddingElements - 1;
startIndex = startIndex &lt; 1 ? 1 : startIndex;
&nbsp;
let endIndex = pagingInfo.currentPage.page + rightPaddingElements;
endIndex = endIndex &gt; pagingInfo.totalPages - 1 ? pagingInfo.totalPages - 1 : endIndex;
&nbsp;
pagingElementsTmp.push(pagingInfo.pages[0]);
if (hasLeftEllipsis) {
pagingElementsTmp.push({isEllipsis: true, page: 'e'});
}
for (let c = startIndex; c &lt; endIndex; c++) {
pagingElementsTmp.push(pagingInfo.pages[c]);
}
if (hasRightEllipsis) {
pagingElementsTmp.push({isEllipsis: true, page: 'e'});
}
pagingElementsTmp.push(pagingInfo.pages[pagingInfo.totalPages - 1]);
return pagingElementsTmp;
}
&nbsp;
/**
* @param {number} totalRecords
* @param {number} pageSize
* @param {number} page
* @returns {PageInfo}
* @private
*/
function _pageDetails(totalRecords, pageSize, page) {
return {
page,
startRecord: 1 + (page * pageSize) - pageSize,
endRecord: Math.min(totalRecords, page * pageSize),
isEllipsis: false
};
}
&nbsp;</pre></td></tr>
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