//分页插件
(function ($) {
    var ms = {
        init: function (obj, args) {
            return (function () {
                ms.fillhtml(obj, args);
                ms.bindevent(obj, args);
            })();
        },
        //填充html
        fillhtml: function (obj, args) {
            return (function () {
                obj.empty();
                if (args.totalcount > 0)
                    obj.append('<span>共' + args.totalcount + '条信息，' + args.pagecount + '页 </span>');

                //上一页
                if (args.current > 1) {
                    obj.append('<a href="javascript:;" class="prevpage">上一页</a>');
                } else {
                    obj.remove('.prevpage');
                    obj.append('<a class="disabled">上一页</a>');
                }
                //中间页码
                //if (args.current != 1 && args.current >= args.showcount && args.pagecount != args.showcount) {
                 //   obj.append('<a href="javascript:;" class="tcdnumber">' + 1 + '</a>');
                //}
                if (args.current != 1 && args.current >= 4 && args.pagecount != 4) {
                    obj.append('<a href="javascript:;" class="tcdnumber">' + 1 + '</a>');
                }
                if (args.current - 2 > 2 && args.current <= args.pagecount && args.pagecount > 5) {
                    obj.append('<a>...</a>');
                }
                var start = args.current - 2, end = args.current + 2;
                if ((start > 1 && args.current < 4) || args.current == 1) {
                    end++;
                }
                if (args.current > args.pagecount - 4 && args.current >= args.pagecount) {
                    start--;
                }
                for (; start <= end; start++) {
                    if (start <= args.pagecount && start >= 1) {
                        if (start != args.current) {
                            obj.append('<a href="javascript:;" class="tcdnumber">' + start + '</a>');
                        } else {
                            obj.append('<a class="current">' + start + '</a>');
                        }
                    }
                }
                if (args.current + 2 < args.pagecount - 1 && args.current >= 1 && args.pagecount > 5) {
                    obj.append('<a>...</a>');
                }
                if (args.current != args.pagecount && args.current < args.pagecount - 2 && args.pagecount != 4) {
                    obj.append('<a href="javascript:;" class="tcdnumber">' + args.pagecount + '</a>');
                }
                //下一页
                if (args.current < args.pagecount) {
                    obj.append('<a href="javascript:;" class="nextpage">下一页</a>');
                } else {
                    obj.remove('.nextpage');
                    obj.append('<a class="disabled">下一页</a>');
                }
            })();
        },
        //绑定事件
        bindevent: function (obj, args) {
            return (function () {
                obj.on("click", "a.tcdnumber", function () {
                    var current = parseint($(this).text());
                    ms.fillhtml(obj, { "current": current, "pagecount": args.pagecount, "showcount": args.showcount });
                    if (typeof (args.backfn) == "function") {
                        args.backfn(current);
                    }
                });
                //上一页
                obj.on("click", "a.prevpage", function () {
                    var current = parseint(obj.children("a.current").text());
                    ms.fillhtml(obj, { "current": current - 1, "pagecount": args.pagecount, "showcount": args.showcount });
                    if (typeof (args.backfn) == "function") {
                        args.backfn(current - 1);
                    }
                });
                //下一页
                obj.on("click", "a.nextpage", function () {
                    var current = parseint(obj.children("a.current").text());
                    ms.fillhtml(obj, { "current": current + 1, "pagecount": args.pagecount, "showcount": args.showcount });
                    if (typeof (args.backfn) == "function") {
                        args.backfn(current + 1);
                    }
                });
            })();
        }
    }
    $.fn.createpage = function (options) {
        var args = $.extend({
            totalcount: 0,
            pagecount: 10,
            current: 1,
            showcount: 5,
            backfn: function () { }
        }, options);
        ms.init(this, args);
    }
})($);