File: /home/ic3/public_html/wp-content/plugins/school-management/assets/js/modules/pagination.js
/**
* Pagination Management Module
*/
window.SchoolManagement = window.SchoolManagement || {};
window.SchoolManagement.Pagination = {
currentPage: 1,
entitiesPerPage: 12,
totalEntities: 0,
/**
* Initialize pagination functionality
* @param {Object} $ - jQuery object
*/
init: function ($) {
this.$ = $;
this.bindEvents();
},
/**
* Bind pagination events
*/
bindEvents: function () {
const self = this;
const $ = this.$;
// Handle pagination click
$(document).on("click", ".pagination .page-link[data-page]", function (e) {
e.preventDefault();
const page = parseInt($(this).data("page"));
if (page !== self.currentPage) {
self.goToPage(page);
}
});
},
/**
* Go to specific page
* @param {number} page - Page number
*/
goToPage: function (page) {
this.currentPage = page;
window.SchoolManagement.Entity.displayEntities();
this.createPagination();
// Scroll to top of entity container
const $ = this.$;
$("#entity-container")[0].scrollIntoView({ behavior: "smooth" });
},
/**
* Set total entities and reset to first page
* @param {number} total - Total number of entities
*/
setTotalEntities: function (total) {
this.totalEntities = total;
this.currentPage = 1;
},
/**
* Get current page entities slice
* @param {Array} entities - All entities
* @returns {Array} Current page entities
*/
getCurrentPageEntities: function (entities) {
const startIndex = (this.currentPage - 1) * this.entitiesPerPage;
const endIndex = startIndex + this.entitiesPerPage;
return entities.slice(startIndex, endIndex);
},
/**
* Create pagination HTML
*/
createPagination: function () {
const $ = this.$;
const totalPages = Math.ceil(this.totalEntities / this.entitiesPerPage);
if (totalPages <= 1) {
$("#pagination-container").hide();
return;
}
const $pagination = $("#pagination-container");
$pagination.empty();
let paginationHtml =
'<nav aria-label="Phân trang bài học"><ul class="pagination justify-content-center">';
// Previous button
paginationHtml += this.createPreviousButton();
// Page numbers
paginationHtml += this.createPageNumbers(totalPages);
// Next button
paginationHtml += this.createNextButton(totalPages);
paginationHtml += "</ul></nav>";
$pagination.html(paginationHtml).show();
},
/**
* Create previous button HTML
* @returns {string} Previous button HTML
*/
createPreviousButton: function () {
if (this.currentPage > 1) {
return (
'<li class="page-item"><a class="page-link" href="#" data-page="' +
(this.currentPage - 1) +
'">« Trước</a></li>'
);
} else {
return '<li class="page-item disabled"><span class="page-link">« Trước</span></li>';
}
},
/**
* Create next button HTML
* @param {number} totalPages - Total number of pages
* @returns {string} Next button HTML
*/
createNextButton: function (totalPages) {
if (this.currentPage < totalPages) {
return (
'<li class="page-item"><a class="page-link" href="#" data-page="' +
(this.currentPage + 1) +
'">Sau »</a></li>'
);
} else {
return '<li class="page-item disabled"><span class="page-link">Sau »</span></li>';
}
},
/**
* Create page numbers HTML
* @param {number} totalPages - Total number of pages
* @returns {string} Page numbers HTML
*/
createPageNumbers: function (totalPages) {
let html = "";
const maxVisiblePages = 3;
let startPage = Math.max(
1,
this.currentPage - Math.floor(maxVisiblePages / 2)
);
let endPage = Math.min(totalPages, startPage + maxVisiblePages - 1);
// Adjust start page if we're near the end
if (endPage - startPage < maxVisiblePages - 1) {
startPage = Math.max(1, endPage - maxVisiblePages + 1);
}
// First page with ellipsis if needed
if (startPage > 1) {
html +=
'<li class="page-item"><a class="page-link" href="#" data-page="1">1</a></li>';
if (startPage > 2) {
html +=
'<li class="page-item disabled"><span class="page-link">...</span></li>';
}
}
// Page numbers in visible range
for (let i = startPage; i <= endPage; i++) {
if (i === this.currentPage) {
html +=
'<li class="page-item active"><span class="page-link">' +
i +
"</span></li>";
} else {
html +=
'<li class="page-item"><a class="page-link" href="#" data-page="' +
i +
'">' +
i +
"</a></li>";
}
}
// Last page with ellipsis if needed
if (endPage < totalPages) {
if (endPage < totalPages - 1) {
html +=
'<li class="page-item disabled"><span class="page-link">...</span></li>';
}
html +=
'<li class="page-item"><a class="page-link" href="#" data-page="' +
totalPages +
'">' +
totalPages +
"</a></li>";
}
return html;
},
/**
* Reset pagination to initial state
*/
reset: function () {
const $ = this.$ || window.SchoolManagement.$ || jQuery;
this.currentPage = 1;
this.totalEntities = 0;
$("#pagination-container").hide();
},
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