56 lines
1.5 KiB
TypeScript
56 lines
1.5 KiB
TypeScript
export class PaginationService {
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getPagination(groups, totalGroups: number, currentPage: number = 1, pageSize: number = 3) {
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// calculate total pages
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//let totalPages = Math.ceil(totalGroups / pageSize);
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let totalPages = 0 ; //totalpages based on pages from xml, each group and section has each one page
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groups.forEach(group => {
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if (group.page > totalPages) {
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totalPages = parseInt(group.page);
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}
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});
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let startPage: number, endPage: number;
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if (totalPages <= 10) {
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// less than 10 total pages so show all
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startPage = 1;
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endPage = totalPages;
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} else {
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// more than 10 total pages so calculate start and end pages
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if (currentPage <= 6) {
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startPage = 1;
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endPage = 10;
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} else if (currentPage + 4 >= totalPages) {
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startPage = totalPages - 9;
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endPage = totalPages;
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} else {
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startPage = currentPage - 5;
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endPage = currentPage + 4;
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}
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}
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// calculate start and end item indexes
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const startIndex = (currentPage - 1) * pageSize;
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const endIndex = Math.min(startIndex + pageSize - 1, totalGroups - 1);
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// create an array of pages to ng-repeat in the pagination control
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const pages = [];
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for (let i = 1; i < endPage + 1; i++) {
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pages.push(i);
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}
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// return object with all pagination properties required by the view
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return {
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totalGroups: totalGroups,
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currentPage: currentPage,
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pageSize: pageSize,
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totalPages: totalPages,
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startPage: startPage,
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endPage: endPage,
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startIndex: startIndex,
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endIndex: endIndex,
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pages: pages
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};
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}
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}
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