345 lines
12 KiB
JavaScript
345 lines
12 KiB
JavaScript
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/**
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* simplePagination.js v1.6
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* A simple jQuery pagination plugin.
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* http://flaviusmatis.github.com/simplePagination.js/
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*
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* Copyright 2012, Flavius Matis
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* Released under the MIT license.
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* http://flaviusmatis.github.com/license.html
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*/
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(function($){
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var methods = {
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init: function(options) {
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var o = $.extend({
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items: 1,
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itemsOnPage: 1,
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pages: 0,
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displayedPages: 5,
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edges: 2,
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currentPage: 0,
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hrefTextPrefix: '#page-',
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hrefTextSuffix: '',
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prevText: 'Prev',
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nextText: 'Next',
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ellipseText: '…',
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cssStyle: 'light-theme',
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listStyle: '',
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labelMap: [],
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selectOnClick: true,
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nextAtFront: false,
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invertPageOrder: false,
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useStartEdge : true,
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useEndEdge : true,
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onPageClick: function(pageNumber, event) {
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// Callback triggered when a page is clicked
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// Page number is given as an optional parameter
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},
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onInit: function() {
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// Callback triggered immediately after initialization
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}
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}, options || {});
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var self = this;
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o.pages = o.pages ? o.pages : Math.ceil(o.items / o.itemsOnPage) ? Math.ceil(o.items / o.itemsOnPage) : 1;
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if (o.currentPage)
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o.currentPage = o.currentPage - 1;
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else
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o.currentPage = !o.invertPageOrder ? 0 : o.pages - 1;
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o.halfDisplayed = o.displayedPages / 2;
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this.each(function() {
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self.addClass(o.cssStyle + ' simple-pagination').data('pagination', o);
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methods._draw.call(self);
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});
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o.onInit();
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return this;
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},
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selectPage: function(page) {
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methods._selectPage.call(this, page - 1);
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return this;
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},
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prevPage: function() {
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var o = this.data('pagination');
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if (!o.invertPageOrder) {
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if (o.currentPage > 0) {
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methods._selectPage.call(this, o.currentPage - 1);
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}
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} else {
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if (o.currentPage < o.pages - 1) {
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methods._selectPage.call(this, o.currentPage + 1);
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}
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}
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return this;
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},
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nextPage: function() {
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var o = this.data('pagination');
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if (!o.invertPageOrder) {
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if (o.currentPage < o.pages - 1) {
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methods._selectPage.call(this, o.currentPage + 1);
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}
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} else {
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if (o.currentPage > 0) {
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methods._selectPage.call(this, o.currentPage - 1);
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}
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}
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return this;
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},
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getPagesCount: function() {
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return this.data('pagination').pages;
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},
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setPagesCount: function(count) {
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this.data('pagination').pages = count;
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},
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getCurrentPage: function () {
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return this.data('pagination').currentPage + 1;
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},
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destroy: function(){
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this.empty();
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return this;
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},
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drawPage: function (page) {
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var o = this.data('pagination');
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o.currentPage = page - 1;
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this.data('pagination', o);
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methods._draw.call(this);
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return this;
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},
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redraw: function(){
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methods._draw.call(this);
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return this;
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},
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disable: function(){
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var o = this.data('pagination');
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o.disabled = true;
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this.data('pagination', o);
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methods._draw.call(this);
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return this;
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},
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enable: function(){
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var o = this.data('pagination');
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o.disabled = false;
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this.data('pagination', o);
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methods._draw.call(this);
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return this;
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},
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updateItems: function (newItems) {
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var o = this.data('pagination');
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o.items = newItems;
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o.pages = methods._getPages(o);
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this.data('pagination', o);
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methods._draw.call(this);
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},
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updateItemsOnPage: function (itemsOnPage) {
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var o = this.data('pagination');
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o.itemsOnPage = itemsOnPage;
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o.pages = methods._getPages(o);
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this.data('pagination', o);
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methods._selectPage.call(this, 0);
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return this;
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},
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getItemsOnPage: function() {
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return this.data('pagination').itemsOnPage;
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},
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_draw: function() {
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var o = this.data('pagination'),
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interval = methods._getInterval(o),
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i,
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tagName;
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methods.destroy.call(this);
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tagName = (typeof this.prop === 'function') ? this.prop('tagName') : this.attr('tagName');
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var $panel = tagName === 'UL' ? this : $('<ul' + (o.listStyle ? ' class="' + o.listStyle + '"' : '') + '></ul>').appendTo(this);
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// Generate Prev link
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if (o.prevText) {
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methods._appendItem.call(this, !o.invertPageOrder ? o.currentPage - 1 : o.currentPage + 1, {text: o.prevText, classes: 'prev'});
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}
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// Generate Next link (if option set for at front)
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if (o.nextText && o.nextAtFront) {
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methods._appendItem.call(this, !o.invertPageOrder ? o.currentPage + 1 : o.currentPage - 1, {text: o.nextText, classes: 'next'});
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}
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// Generate start edges
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if (!o.invertPageOrder) {
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if (interval.start > 0 && o.edges > 0) {
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if(o.useStartEdge) {
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var end = Math.min(o.edges, interval.start);
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for (i = 0; i < end; i++) {
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methods._appendItem.call(this, i);
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}
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}
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if (o.edges < interval.start && (interval.start - o.edges != 1)) {
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$panel.append('<li class="disabled"><span class="ellipse">' + o.ellipseText + '</span></li>');
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} else if (interval.start - o.edges == 1) {
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methods._appendItem.call(this, o.edges);
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}
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}
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} else {
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if (interval.end < o.pages && o.edges > 0) {
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if(o.useStartEdge) {
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var begin = Math.max(o.pages - o.edges, interval.end);
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for (i = o.pages - 1; i >= begin; i--) {
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methods._appendItem.call(this, i);
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}
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}
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if (o.pages - o.edges > interval.end && (o.pages - o.edges - interval.end != 1)) {
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$panel.append('<li class="disabled"><span class="ellipse">' + o.ellipseText + '</span></li>');
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} else if (o.pages - o.edges - interval.end == 1) {
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methods._appendItem.call(this, interval.end);
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}
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}
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}
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// Generate interval links
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if (!o.invertPageOrder) {
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for (i = interval.start; i < interval.end; i++) {
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methods._appendItem.call(this, i);
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}
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} else {
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for (i = interval.end - 1; i >= interval.start; i--) {
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methods._appendItem.call(this, i);
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}
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}
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// Generate end edges
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if (!o.invertPageOrder) {
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if (interval.end < o.pages && o.edges > 0) {
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if (o.pages - o.edges > interval.end && (o.pages - o.edges - interval.end != 1)) {
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$panel.append('<li class="disabled"><span class="ellipse">' + o.ellipseText + '</span></li>');
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} else if (o.pages - o.edges - interval.end == 1) {
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methods._appendItem.call(this, interval.end);
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}
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if(o.useEndEdge) {
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var begin = Math.max(o.pages - o.edges, interval.end);
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for (i = begin; i < o.pages; i++) {
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methods._appendItem.call(this, i);
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}
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}
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}
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} else {
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if (interval.start > 0 && o.edges > 0) {
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if (o.edges < interval.start && (interval.start - o.edges != 1)) {
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$panel.append('<li class="disabled"><span class="ellipse">' + o.ellipseText + '</span></li>');
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} else if (interval.start - o.edges == 1) {
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methods._appendItem.call(this, o.edges);
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}
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if(o.useEndEdge) {
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var end = Math.min(o.edges, interval.start);
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for (i = end - 1; i >= 0; i--) {
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methods._appendItem.call(this, i);
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}
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}
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}
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}
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// Generate Next link (unless option is set for at front)
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if (o.nextText && !o.nextAtFront) {
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methods._appendItem.call(this, !o.invertPageOrder ? o.currentPage + 1 : o.currentPage - 1, {text: o.nextText, classes: 'next'});
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}
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},
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_getPages: function(o) {
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var pages = Math.ceil(o.items / o.itemsOnPage);
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return pages || 1;
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},
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_getInterval: function(o) {
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return {
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start: Math.ceil(o.currentPage > o.halfDisplayed ? Math.max(Math.min(o.currentPage - o.halfDisplayed, (o.pages - o.displayedPages)), 0) : 0),
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end: Math.ceil(o.currentPage > o.halfDisplayed ? Math.min(o.currentPage + o.halfDisplayed, o.pages) : Math.min(o.displayedPages, o.pages))
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};
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},
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_appendItem: function(pageIndex, opts) {
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var self = this, options, $link, o = self.data('pagination'), $linkWrapper = $('<li></li>'), $ul = self.find('ul');
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pageIndex = pageIndex < 0 ? 0 : (pageIndex < o.pages ? pageIndex : o.pages - 1);
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options = {
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text: pageIndex + 1,
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classes: ''
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};
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if (o.labelMap.length && o.labelMap[pageIndex]) {
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options.text = o.labelMap[pageIndex];
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}
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options = $.extend(options, opts || {});
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if (pageIndex == o.currentPage || o.disabled) {
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if (o.disabled || options.classes === 'prev' || options.classes === 'next') {
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$linkWrapper.addClass('disabled');
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} else {
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$linkWrapper.addClass('active');
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}
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$link = $('<span class="current">' + (options.text) + '</span>');
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} else {
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$link = $('<a href="' + o.hrefTextPrefix + (pageIndex + 1) + o.hrefTextSuffix + '" class="page-link">' + (options.text) + '</a>');
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$link.click(function(event){
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return methods._selectPage.call(self, pageIndex, event);
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});
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}
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if (options.classes) {
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$link.addClass(options.classes);
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}
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$linkWrapper.append($link);
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if ($ul.length) {
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$ul.append($linkWrapper);
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} else {
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self.append($linkWrapper);
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}
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},
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_selectPage: function(pageIndex, event) {
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var o = this.data('pagination');
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o.currentPage = pageIndex;
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if (o.selectOnClick) {
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methods._draw.call(this);
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}
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return o.onPageClick(pageIndex + 1, event);
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}
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};
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$.fn.pagination = function(method) {
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// Method calling logic
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if (methods[method] && method.charAt(0) != '_') {
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return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
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} else if (typeof method === 'object' || !method) {
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return methods.init.apply(this, arguments);
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} else {
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$.error('Method ' + method + ' does not exist on jQuery.pagination');
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}
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};
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})(jQuery);
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