<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="UpFiles.aspx.cs" Inherits="Mall.MCScriptManageServices.UpFiles" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<title>mcshop文件上传系统</title>
</head>
<body>
<style>
.fu_list {
	width:600px;
	background:#ebebeb;
	font-size:12px;
}
.fu_list td {
	padding:5px;
	line-height:20px;
	background-color:#fff;
}
.fu_list table {
	width:100%;
	border:1px solid #ebebeb;
}
.fu_list thead td {
	background-color:#f4f4f4;
}
.fu_list b {
	font-size:14px;
}
/*file容器样式*/
a.files {
	width:90px;
	height:30px;
	overflow:hidden;
	display:block;
	border:1px solid #BEBEBE;
	background:url(/content/images/fu_btn.gif) left top no-repeat;
	text-decoration:none;
}
a.files:hover {
	background-color:#FFFFEE;
	background-position:0 -30px;
}
/*file设为透明，并覆盖整个触发面*/
a.files input {
	margin-left:-350px;
	font-size:30px;
	cursor:pointer;
	filter:alpha(opacity=0);
	opacity:0;
}
/*取消点击时的虚线框*/
a.files, a.files input {
	outline:none;/*ff*/
	hide-focus:expression(this.hideFocus=true);/*ie*/
}
</style>
<form id="uploadForm" action="/Content/upload/up.ashx">
  <table border="0" cellspacing="1" class="fu_list">
    <thead>
      <tr>
        <td colspan="2"><b>上传文件</b></td>
      </tr>
    </thead>
    <tbody>
      <tr>
        <td align="right" width="15%" style="line-height:35px;">添加文件：</td>
        <td><a href="javascript:void(0);" class="files" id="idFile"></a> <img id="idProcess" style="display:none;" src="/content/images/loading.gif" /></td>
      </tr>
      <tr>
        <td colspan="2"><table border="0" cellspacing="0">
            <thead>
              <tr>
                <td>文件路径</td>
                <td width="100"></td>
              </tr>
            </thead>
            <tbody id="idFileList">
            </tbody>
          </table></td>
      </tr>
      <tr>
        <td colspan="2" style="color:gray">温馨提示：最多可同时上传 <b id="idLimit"></b> 个文件，只允许上传 <b id="idExt"></b> 文件。 </td>
      </tr>
      <tr>
        <td colspan="2" align="center" id="idMsg"><input type="button" value="开始上传" id="idBtnupload" disabled="disabled" />
          &nbsp;&nbsp;&nbsp;
          <input type="button" value="全部取消" id="idBtndel" disabled="disabled" />
        </td>
      </tr>
    </tbody>
  </table>
</form>
<script type="text/javascript">

    var isIE = (document.all) ? true : false;

    var $ = function (id) {
        return "string" == typeof id ? document.getElementById(id) : id;
    };

    var Class = {
        create: function () {
            return function () {
                this.initialize.apply(this, arguments);
            }
        }
    }

    var Extend = function (destination, source) {
        for (var property in source) {
            destination[property] = source[property];
        }
    }

    var Bind = function (object, fun) {
        return function () {
            return fun.apply(object, arguments);
        }
    }

    var Each = function (list, fun) {
        for (var i = 0, len = list.length; i < len; i++) { fun(list[i], i); }
    };

    //文件上传类
    var FileUpload = Class.create();
    FileUpload.prototype = {
        //表单对象，文件控件存放空间
        initialize: function (form, folder, options) {

            this.Form = $(form); //表单
            this.Folder = $(folder); //文件控件存放空间
            this.Files = []; //文件集合

            this.SetOptions(options);

            this.FileName = this.options.FileName;
            this._FrameName = this.options.FrameName;
            this.Limit = this.options.Limit;
            this.Distinct = !!this.options.Distinct;
            this.ExtIn = this.options.ExtIn;
            this.ExtOut = this.options.ExtOut;

            this.onIniFile = this.options.onIniFile;
            this.onEmpty = this.options.onEmpty;
            this.onNotExtIn = this.options.onNotExtIn;
            this.onExtOut = this.options.onExtOut;
            this.onLimite = this.options.onLimite;
            this.onSame = this.options.onSame;
            this.onFail = this.options.onFail;
            this.onIni = this.options.onIni;

            if (!this._FrameName) {
                //为每个实例创建不同的iframe
                this._FrameName = "uploadFrame_" + Math.floor(Math.random() * 1000);
                //ie不能修改iframe的name
                var oFrame = isIE ? document.createElement("<iframe name=\"" + this._FrameName + "\">") : document.createElement("iframe");
                //为ff设置name
                oFrame.name = this._FrameName;
                oFrame.style.display = "none";
                //在ie文档未加载完用appendChild会报错
                document.body.insertBefore(oFrame, document.body.childNodes[0]);
            }

            //设置form属性，关键是target要指向iframe
            this.Form.target = this._FrameName;
            this.Form.method = "post";
            //注意ie的form没有enctype属性，要用encoding
            this.Form.encoding = "multipart/form-data";

            //整理一次
            this.Ini();
        },
        //设置默认属性
        SetOptions: function (options) {
            this.options = {//默认值
                FileName: "", //文件上传控件的name，配合后台使用
                FrameName: "", //iframe的name，要自定义iframe的话这里设置name
                onIniFile: function () { }, //整理文件时执行(其中参数是file对象)
                onEmpty: function () { }, //文件空值时执行
                Limit: 0, //文件数限制，0为不限制
                onLimite: function () { }, //超过文件数限制时执行
                Distinct: true, //是否不允许相同文件
                onSame: function () { }, //有相同文件时执行
                ExtIn: [], //允许后缀名
                onNotExtIn: function () { }, //不是允许后缀名时执行
                ExtOut: [], //禁止后缀名，当设置了ExtIn则ExtOut无效
                onExtOut: function () { }, //是禁止后缀名时执行
                onFail: function () { }, //文件不通过检测时执行(其中参数是file对象)
                onIni: function () { } //重置时执行
            };
            Extend(this.options, options || {});
        },
        //整理空间
        Ini: function () {
            //整理文件集合
            this.Files = [];
            //整理文件空间，把有值的file放入文件集合
            Each(this.Folder.getElementsByTagName("input"), Bind(this, function (o) {
                if (o.type == "file") { o.value && this.Files.push(o); this.onIniFile(o); }
            }))
            //插入一个新的file
            var file = document.createElement("input");
            file.name = this.FileName; file.type = "file"; file.onchange = Bind(this, function () { this.Check(file); this.Ini(); });
            this.Folder.appendChild(file);
            //执行附加程序
            this.onIni();
        },
        //检测file对象
        Check: function (file) {
            //检测变量
            var bCheck = true;
            //空值、文件数限制、后缀名、相同文件检测
            if (!file.value) {
                bCheck = false; this.onEmpty();
            } else if (this.Limit && this.Files.length >= this.Limit) {
                bCheck = false; this.onLimite();
            } else if (!!this.ExtIn.length && !RegExp("\.(" + this.ExtIn.join("|") + ")$", "i").test(file.value)) {
                //检测是否允许后缀名
                bCheck = false; this.onNotExtIn();
            } else if (!!this.ExtOut.length && RegExp("\.(" + this.ExtOut.join("|") + ")$", "i").test(file.value)) {
                //检测是否禁止后缀名
                bCheck = false; this.onExtOut();
            } else if (!!this.Distinct) {
                Each(this.Files, function (o) { if (o.value == file.value) { bCheck = false; } })
                if (!bCheck) { this.onSame(); }
            }
            //没有通过检测
            !bCheck && this.onFail(file);
        },
        //删除指定file
        Delete: function (file) {
            //移除指定file
            this.Folder.removeChild(file); this.Ini();
        },
        //删除全部file
        Clear: function () {
            //清空文件空间
            Each(this.Files, Bind(this, function (o) { this.Folder.removeChild(o); })); this.Ini();
        }
    }

    var fu = new FileUpload("uploadForm", "idFile", { Limit: 3, ExtIn: ["jpg", "gif"],
        onIniFile: function (file) { file.value ? file.style.display = "none" : this.Folder.removeChild(file); },
        onEmpty: function () { alert("请选择一个文件"); },
        onLimite: function () { alert("超过上传限制"); },
        onSame: function () { alert("已经有相同文件"); },
        onNotExtIn: function () { alert("只允许上传" + this.ExtIn.join("，") + "文件"); },
        onFail: function (file) { this.Folder.removeChild(file); },
        onIni: function () {
            //显示文件列表
            var arrRows = [];
            if (this.Files.length) {
                var oThis = this;
                Each(this.Files, function (o) {
                    var a = document.createElement("a"); a.innerHTML = "取消"; a.href = "javascript:void(0);";
                    a.onclick = function () { oThis.Delete(o); return false; };
                    arrRows.push([o.value, a]);
                });
            } else { arrRows.push(["<font color='gray'>没有添加文件</font>", "&nbsp;"]); }
            AddList(arrRows);
            //设置按钮
            $("idBtnupload").disabled = $("idBtndel").disabled = this.Files.length <= 0;
        }
    });

    $("idBtnupload").onclick = function () {
        //显示文件列表
        var arrRows = [];
        Each(fu.Files, function (o) { arrRows.push([o.value, "&nbsp;"]); });
        AddList(arrRows);

        fu.Folder.style.display = "none";
        $("idProcess").style.display = "";
        $("idMsg").innerHTML = "正在添加文件到您的网盘中，请稍候……<br />有可能因为网络问题，出现程序长时间无响应，请点击“<a href='?'><font color='red'>取消</font></a>”重新上传文件";

        fu.Form.submit();
    }

    //用来添加文件列表的函数
    function AddList(rows) {
        //根据数组来添加列表
        var FileList = $("idFileList"), oFragment = document.createDocumentFragment();
        //用文档碎片保存列表
        Each(rows, function (cells) {
            var row = document.createElement("tr");
            Each(cells, function (o) {
                var cell = document.createElement("td");
                if (typeof o == "string") { cell.innerHTML = o; } else { cell.appendChild(o); }
                row.appendChild(cell);
            });
            oFragment.appendChild(row);
        })
        //ie的table不支持innerHTML所以这样清空table
        while (FileList.hasChildNodes()) { FileList.removeChild(FileList.firstChild); }
        FileList.appendChild(oFragment);
    }


    $("idLimit").innerHTML = fu.Limit;

    $("idExt").innerHTML = fu.ExtIn.join("，");

    $("idBtndel").onclick = function () { fu.Clear(); }

    //在后台通过window.parent来访问主页面的函数
    function Finish(msg) { alert(msg); location.href = location.href; }

</script>
</body>
</html>

