1using System;
  2using System.Text;
  3using System.Web;
  4using System.IO;
  5
  6namespace Webb.WAVE.Controls.Upload
  7...{
  8    //该源码下载自www.51aspx.com(５１ａｓｐｘ．ｃｏｍ)
  9
 10    /**//// <summary>
 11    /// 
 12    /// </summary>
 13    internal class WebbUploadStatusHandler : IHttpHandler
 14    ...{
 15        /**//// <summary>
 16        /// Implement from IHttphanders
 17        /// </summary>
 18        public bool IsReusable
 19        ...{
 20            get ...{ return true; }
 21        }
 22
 23        public WebbUploadStatusHandler()
 24        ...{
 25        }
 26
 27        /**//// <summary>
 28        /// 
 29        /// </summary>
 30        /// <param name="uploadGUID"></param>
 31        public void InitProgress(string i_uploadGUID)
 32        ...{
 33            HttpContext context;
 34            UploadStatus m_uploadStatus        = new UploadStatus();
 35            m_uploadStatus.GetUploadStatus(i_uploadGUID);
 36            StringBuilder sb = WebbHelper.GetHtml("Progress.page");
 37            //While files were uploading, update the state.
 38            if (m_uploadStatus.IsActive)
 39            ...{
 40                switch (m_uploadStatus.Status)
 41                ...{
 42                    case UploadStatus.UploadState.Initializing:    sb.Replace("${status}$", "Initializtion...");    break;
 43                    case UploadStatus.UploadState.Uploading:    sb.Replace("${status}$", "Uploading...");        break;
 44                    case UploadStatus.UploadState.Uploaded:        sb.Replace("${status}$", "Upload completed.");    break;
 45                    case UploadStatus.UploadState.Moving:        sb.Replace("${status}$", "Moving file...");        break;
 46                    case UploadStatus.UploadState.Completed:    sb.Replace("${status}$", "Finished.");            break;
 47                }
 48                //WebbTextTrace.TraceMsg(sb.ToString());
 49                this.ReviewStatus(m_uploadStatus, sb, i_uploadGUID);
 50            }
 51            else
 52            ...{
 53                sb.Replace("${Script}$", "<script>window.opener=self;window.close();</script>");
 54            }
 55            context = WebbHelper.GetContext();
 56            //Clear the cache of client browser.
 57            context.Response.Expires = 0;
 58            context.Response.Cache.SetCacheability(HttpCacheability.NoCache);
 59            context.Response.ContentEncoding    = Encoding.Default;
 60            context.Response.ContentType        = "text/html";
 61            context.Response.Clear();
 62            //Show page to client.
 63            context.Response.Write(sb.ToString());
 64        }
 65
 66        /**//// <summary>
 67        /// Update current upload status.
 68        /// </summary>
 69        /// <param name="uploadStatus"></param>
 70        /// <param name="builder"></param>
 71        /// <param name="uploadGUID"></param>
 72        private void ReviewStatus(UploadStatus uploadStatus, StringBuilder builder, string uploadGUID)
 73        ...{
 74            if (uploadStatus.Status == UploadStatus.UploadState.Uploading)
 75            ...{
 76                builder.Replace("${FileName}$", Path.GetFileName(uploadStatus.FileName));
 77                builder.Replace("${UploadProgress}$", uploadStatus.Percent.ToString());
 78                builder.Replace("${SurplusProgress}$", Convert.ToString(100 - uploadStatus.Percent));
 79                builder.Replace("${UploadSpeed}$", (WebbHelper.GetFormatString(uploadStatus.Speed) + "/s"));
 80                builder.Replace("${LeftTime}$", WebbHelper.GetFormatString(uploadStatus.LeftTime));
 81                builder.Replace("${BtnOK}$", "disabled");
 82                builder.Replace("${Refresh}$", ("<meta http-equiv=\"Refresh\" content=\"2\";URL=progress.ashx?UploadGUID="+uploadGUID+"\">"));
 83            }
 84            else if (uploadStatus.Status == UploadStatus.UploadState.Completed)
 85            ...{
 86                builder.Replace("${UploadProgress}$", uploadStatus.Percent.ToString());
 87                builder.Replace("${SurplusProgress}$", Convert.ToString(100 - uploadStatus.Percent));
 88
 89                builder.Replace("${FileName}$", (uploadStatus.FileCount.ToString() + "file(s) uploaded success!"));
 90                builder.Replace("${UploadSpeed}$", (WebbHelper.GetFormatString(uploadStatus.Speed) + "/s"));
 91                builder.Replace("${LeftTime}$", "finished, no time remain!");
 92
 93                uploadStatus.Dispose();
 94                builder.Replace("${BtnOK}$", "onclick=\"javascript:window.opener=self;window.close();return false;\"");
 95                builder.Replace("${Refresh}$", "");
 96            }
 97            else
 98            ...{
 99                builder.Replace("${FileName}$", "Loading...");
100                builder.Replace("${UploadProgress}$", "0");
101                builder.Replace("${SurplusProgress}$", "100");
102                builder.Replace("${UploadSpeed}$", (WebbHelper.GetFormatString(uploadStatus.Speed) + "/s"));
103                builder.Replace("${LeftTime}$", "0 second(s)");
104                builder.Replace("${BtnOK}$", "disabled");
105                builder.Replace("${Refresh}$", ("<meta http-equiv=\"Refresh\" content=\"1\";URL=progress.ashx?UploadID=" + uploadGUID + "\">"));
106            }
107
108            if (uploadStatus.Status == UploadStatus.UploadState.Completed)
109            ...{
110                builder.Replace("${BtnCancel}$", "onclick=\"javascript:window.opener=self;window.close();return false;\"");
111            }
112            else
113            ...{
114                if(WebbHelper.IsAccordantBrowser())
115                ...{
116                    builder.Replace("${BtnCancel}$", "onclick=\"javascript:dialogArguments.location.href=dialogArguments.location.href;window.close();\"");                    
117                }
118                else
119                ...{
120                    builder.Replace("${BtnCancel}$", "onclick=\"javascript:window.opener.opener=null;window.opener.location.href=window.opener.location.href;window.close();this.disabled=true;\"");
121                }
122            }
123
124            builder.Replace("${Script}$", "");
125        }
126
127        /**//// <summary>
128        /// 
129        /// </summary>
130        /// <param name="context"></param>
131        public void ProcessRequest(HttpContext context)
132        ...{
133            string m_uploadID    = context.Request.QueryString["UploadGUID"];
134            string m_filePath    = context.Request.FilePath;
135            m_filePath            = m_filePath.Substring((m_filePath.LastIndexOf("/") + 1)).ToUpper();
136//            bool isUnknownRequest = false;
137            if (m_filePath=="PROGRESS.ASHX")
138            ...{
139                this.InitProgress(m_uploadID);
140            }
141//            The IIS can solve this problem
142//            else
143//            {
144//                isUnknownRequest = true;
145//            }
146//
147//            if (isUnknownRequest)
148//            {
149//                throw new HttpException(500, "unknown request");
150//            }
151        }
152    }
153}