var page = page || {};
page.fn = null;
/*
定义
var opinion_content={param:"opinion_content",type:"str"};
var opinion_name={param:"opinion_name",type:"str"};
var create_date={param:"create_date",type:"date"};
//{param:"opinion_name",type:"str",title_length:12};
page.pageParams=[opinion_content,opinion_name,create_date];

*/
var stop=true;
var number=1;
page.pageParams=null;//循环替换参数
page.currentPage=1;//当前页页数
page.formCurrentPage=1;//form当前页页数
page.pagesize=10;//每页记录数
page.totalPage=0;//总页数
page.allRow=0;//总记录数
page.data=null;//传参
page.pageHtml="pageHtml";//分页内容添加的DIV
page.url="";//分页URL
page.number=null;//异步加载次数，默认全部
page.ajaxPage = function(data){
	data.currentPage=page.currentPage;
	data.pagesize=page.pagesize;
	$("#load").show();
	$.ajax({
			url : page.url,
			type : "POST",
			data : data,
			dataType : "json",
			success : function(json) {
				if (!jQuery.isEmptyObject(json)) {
					$.each(json.page.list, function(i) {
						var obj = json.page.list[i];
						var cyclePage = $("#cyclePage").html();
						$.each(page.pageParams, function(j) {
							var param = page.pageParams[j].param;
							var title_length = page.pageParams[j].title_length;
							var type = page.pageParams[j].type;
							var v = obj[param];
							eval("var re = /{"+param+"}/ig;"); 
							if (type&&type=="date"){
								cyclePage = cyclePage.replace(re,dateToSrting(v));
							}
							else{
								if (title_length){
									v = v.length>title_length?v.substr(0,title_length)+"...":v;
								}
								cyclePage = cyclePage.replace(re,v);	
							}
						});
						$("#"+page.pageHtml).append(cyclePage);
					});
					//alert(json.page.currentPage);
					page.currentPage=json.page.currentPage;
					page.totalPage=json.page.totalPage;
					page.allRow=json.page.allRow;
					$("#load").hide();
				} 
				stop=true;
			}
		});
	
};

//p为当前页码,pn为总页数
page.nav = function(p, pn) {
    //只有一页,直接显示1
    if (pn <= 1) {
        this.p = 1;
        this.pn = 1;
        return this.pHtml2(1);
    }
    if (pn < p) {
        p = pn;
    };
    var re = "";
    //第一页
    if (p <= 1) {
        p = 1;
    } else {
        //非第一页
        re += this.pHtml(p - 1, pn, "&lt;上一页");
        //总是显示第一页页码
        re += this.pHtml(1, pn, "1");
    }
    //校正页码
    this.p = p;
    this.pn = pn;

    //开始页码
    var start = 2;
    var end = (pn < 6) ? pn: 6;
    //是否显示前置省略号,即大于10的开始页码
    if (p >= 5) {
        re += "<span class='mor'>...</span>";
        start = p - 2;
        var e = p + 2;
        end = (pn < e) ? pn: e;
    }
    for (var i = start; i < p; i++) {
        re += this.pHtml(i, pn);
    };
    re += this.pHtml2(p);
    for (var i = p + 1; i <= end; i++) {
        re += this.pHtml(i, pn);
    };
    if (end < pn) {
        re += "<span class='mor'>...</span>";
        //显示最后一页页码,如不需要则去掉下面这一句
        re += this.pHtml(pn, pn);
    };
    if (p < pn) {
        re += this.pHtml(p + 1, pn, "下一页&gt;");
    };
    return re;
};
//显示非当前页
page.pHtml = function(pageNo, pn, showPageNo) {
    showPageNo = showPageNo || pageNo;
    var H = " <a href='javascript:page.go(" + pageNo + "," + pn + ");' class='pageNum'>" + showPageNo + "</a> ";
    return H;

};
//显示当前页
page.pHtml2 = function(pageNo) {
    var H = " <b>" + pageNo + "</b> ";
    return H;
};
//输出页码,可根据需要重写此方法
page.go = function(p1, pn1) {
	var p = parseInt(p1);
	var pn = parseInt(pn1);
    //$("#pageNav").html(this.nav(p,pn)); //如果使用jQuery可用此句
    document.getElementById("pageNav").innerHTML = this.nav(p, pn);
    if (this.fn != null) {
        this.fn(this.p, this.pn);
    };
};

page.countTotalPage = function(){
	var pageSize = page.number*page.pagesize;
	var totalPage = page.allRow % pageSize == 0 ? page.allRow / pageSize : Math.ceil(page.allRow / pageSize);
    return totalPage;
}
page.initialize_currentPage = function(){
	if (page.number){
		return (page.number*page.formCurrentPage)-1;
	}
    return page.currentPage;
}

$(window).scroll(function(){
    totalheight = parseFloat($(window).height()) + parseFloat($(window).scrollTop());
    if($(document).height() <= totalheight){

		if(stop==true){
			stop=false;
			myInterval();
		}
		
    }
}); 
function myInterval(){
	var p = page.currentPage+1;
	page.currentPage = p;
	if (page.number){
		if (number<page.number){
			if (p<=page.totalPage)
			{
				page.ajaxPage(page.data);
			}
			else{
				var pn = page.countTotalPage();
				$("#pageNav").html(page.nav(page.formCurrentPage,pn));
			}
			number=number+1;
		}else{
			var pn = page.countTotalPage();
			$("#pageNav").html(page.nav(page.formCurrentPage,pn));
		}
	}
	else{
		if (p<=page.totalPage)
		{
			page.ajaxPage(page.data);
		}
	}
	//alert(p);
	
}
function dateToSrting(date){
	var now = new Date(date);
	var year = now.getFullYear();
	var month =(now.getMonth() + 1).toString();
	var day = (now.getDate()).toString();
	if (month.length == 1) {
		month = "0" + month;
	}
	if (day.length == 1) {
		day = "0" + day;
	}
	return year+"-" + month+"-" +  day;
}