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/*!
* jQuery pagination plugin v1.4.1
* http://esimakin.github.io/twbs-pagination/
*
* Copyright 2014-2016, Eugene Simakin
* Released under Apache 2.0 license
* http://apache.org/licenses/LICENSE-2.0.html
*/
(function ($, window, document, undefined) {
'use strict';
var old = $.fn.twbsPagination;
// PROTOTYPE AND CONSTRUCTOR
var TwbsPagination = function (element, options) {
this.$element = $(element);
this.options = $.extend({}, $.fn.twbsPagination.defaults, options);
if (this.options.startPage < 1 || this.options.startPage > this.options.totalPages) {
throw new Error('Start page option is incorrect');
}
this.options.totalPages = parseInt(this.options.totalPages);
if (isNaN(this.options.totalPages)) {
throw new Error('Total pages option is not correct!');
}
this.options.visiblePages = parseInt(this.options.visiblePages);
if (isNaN(this.options.visiblePages)) {
throw new Error('Visible pages option is not correct!');
}
if (this.options.onPageClick instanceof Function) {
this.$element.first().on('page', this.options.onPageClick);
}
// hide if only one page exists
if (this.options.hideOnlyOnePage && this.options.totalPages == 1) {
this.$element.trigger('page', 1);
return this;
}
if (this.options.totalPages < this.options.visiblePages) {
this.options.visiblePages = this.options.totalPages;
}
if (this.options.href) {
this.options.startPage = this.getPageFromQueryString();
if (!this.options.startPage) {
this.options.startPage = 1;
}
}
var tagName = (typeof this.$element.prop === 'function') ?
this.$element.prop('tagName') : this.$element.attr('tagName');
if (tagName === 'UL') {
this.$listContainer = this.$element;
} else {
this.$listContainer = $('
');
}
this.$listContainer.addClass(this.options.paginationClass);
if (tagName !== 'UL') {
this.$element.append(this.$listContainer);
}
if (this.options.initiateStartPageClick) {
this.show(this.options.startPage);
} else {
this.currentPage = this.options.startPage;
this.render(this.getPages(this.options.startPage));
this.setupEvents();
}
return this;
};
TwbsPagination.prototype = {
constructor: TwbsPagination,
destroy: function () {
this.$element.empty();
this.$element.removeData('twbs-pagination');
this.$element.off('page');
return this;
},
show: function (page) {
if (page < 1 || page > this.options.totalPages) {
throw new Error('Page is incorrect.');
}
this.currentPage = page;
this.render(this.getPages(page));
this.setupEvents();
this.$element.trigger('page', page);
return this;
},
enable: function () {
this.show(this.currentPage);
},
disable: function () {
var _this = this;
this.$listContainer.off('click').on('click', 'li', function (evt) {
evt.preventDefault();
});
this.$listContainer.children().each(function () {
var $this = $(this);
if (!$this.hasClass(_this.options.activeClass)) {
$(this).addClass(_this.options.disabledClass);
}
});
},
buildListItems: function (pages) {
var listItems = [];
if (this.options.first) {
listItems.push(this.buildItem('first', 1));
}
if (this.options.prev) {
var prev = pages.currentPage > 1 ? pages.currentPage - 1 : this.options.loop ? this.options.totalPages : 1;
listItems.push(this.buildItem('prev', prev));
}
for (var i = 0; i < pages.numeric.length; i++) {
listItems.push(this.buildItem('page', pages.numeric[i]));
}
if (this.options.next) {
var next = pages.currentPage < this.options.totalPages ? pages.currentPage + 1 : this.options.loop ? 1 : this.options.totalPages;
listItems.push(this.buildItem('next', next));
}
if (this.options.last) {
listItems.push(this.buildItem('last', this.options.totalPages));
}
return listItems;
},
buildItem: function (type, page) {
var $itemContainer = $(''),
$itemContent = $(''),
itemText = this.options[type] ? this.makeText(this.options[type], page) : page;
$itemContainer.addClass(this.options[type + 'Class']);
$itemContainer.data('page', page);
$itemContainer.data('page-type', type);
$itemContainer.append($itemContent.attr('href', this.makeHref(page)).addClass(this.options.anchorClass).html(itemText));
return $itemContainer;
},
getPages: function (currentPage) {
var pages = [];
var half = Math.floor(this.options.visiblePages / 2);
var start = currentPage - half + 1 - this.options.visiblePages % 2;
var end = currentPage + half;
// handle boundary case
if (start <= 0) {
start = 1;
end = this.options.visiblePages;
}
if (end > this.options.totalPages) {
start = this.options.totalPages - this.options.visiblePages + 1;
end = this.options.totalPages;
}
var itPage = start;
while (itPage <= end) {
pages.push(itPage);
itPage++;
}
return {"currentPage": currentPage, "numeric": pages};
},
render: function (pages) {
var _this = this;
this.$listContainer.children().remove();
var items = this.buildListItems(pages);
$.each(items, function(key, item){
_this.$listContainer.append(item);
});
this.$listContainer.children().each(function () {
var $this = $(this),
pageType = $this.data('page-type');
switch (pageType) {
case 'page':
if ($this.data('page') === pages.currentPage) {
$this.addClass(_this.options.activeClass);
}
break;
case 'first':
$this.toggleClass(_this.options.disabledClass, pages.currentPage === 1);
break;
case 'last':
$this.toggleClass(_this.options.disabledClass, pages.currentPage === _this.options.totalPages);
break;
case 'prev':
$this.toggleClass(_this.options.disabledClass, !_this.options.loop && pages.currentPage === 1);
break;
case 'next':
$this.toggleClass(_this.options.disabledClass,
!_this.options.loop && pages.currentPage === _this.options.totalPages);
break;
default:
break;
}
});
},
setupEvents: function () {
var _this = this;
this.$listContainer.off('click').on('click', 'li', function (evt) {
var $this = $(this);
if ($this.hasClass(_this.options.disabledClass) || $this.hasClass(_this.options.activeClass)) {
return false;
}
// Prevent click event if href is not set.
!_this.options.href && evt.preventDefault();
_this.show(parseInt($this.data('page')));
});
},
makeHref: function (page) {
return this.options.href ? this.generateQueryString(page) : "#";
},
makeText: function (text, page) {
return text.replace(this.options.pageVariable, page)
.replace(this.options.totalPagesVariable, this.options.totalPages)
},
getPageFromQueryString: function (searchStr) {
var search = this.getSearchString(searchStr),
regex = new RegExp(this.options.pageVariable + '(=([^&#]*)|&|#|$)'),
page = regex.exec(search);
if (!page || !page[2]) {
return null;
}
page = decodeURIComponent(page[2]);
page = parseInt(page);
if (isNaN(page)) {
return null;
}
return page;
},
generateQueryString: function (pageNumber, searchStr) {
var search = this.getSearchString(searchStr),
regex = new RegExp(this.options.pageVariable + '=*[^&#]*');
if (!search) return '';
return '?' + search.replace(regex, this.options.pageVariable + '=' + pageNumber);
},
getSearchString: function (searchStr) {
var search = searchStr || window.location.search;
if (search === '') {
return null;
}
if (search.indexOf('?') === 0) search = search.substr(1);
return search;
},
getCurrentPage: function () {
return this.currentPage;
}
};
// PLUGIN DEFINITION
$.fn.twbsPagination = function (option) {
var args = Array.prototype.slice.call(arguments, 1);
var methodReturn;
var $this = $(this);
var data = $this.data('twbs-pagination');
var options = typeof option === 'object' ? option : {};
if (!data) $this.data('twbs-pagination', (data = new TwbsPagination(this, options) ));
if (typeof option === 'string') methodReturn = data[ option ].apply(data, args);
return ( methodReturn === undefined ) ? $this : methodReturn;
};
$.fn.twbsPagination.defaults = {
totalPages: 1,
startPage: 1,
visiblePages: 5,
initiateStartPageClick: true,
hideOnlyOnePage: false,
href: false,
pageVariable: '{{page}}',
totalPagesVariable: '{{total_pages}}',
page: null,
first: 'First',
prev: 'Previous',
next: 'Next',
last: 'Last',
loop: false,
onPageClick: null,
paginationClass: 'pagination',
nextClass: 'page-item next',
prevClass: 'page-item prev',
lastClass: 'page-item last',
firstClass: 'page-item first',
pageClass: 'page-item',
activeClass: 'active',
disabledClass: 'disabled',
anchorClass: 'page-link'
};
$.fn.twbsPagination.Constructor = TwbsPagination;
$.fn.twbsPagination.noConflict = function () {
$.fn.twbsPagination = old;
return this;
};
$.fn.twbsPagination.version = "1.4.1";
})(window.jQuery, window, document);