1//------------------------------------------------------------------------------
  2// <copyright company="Tunynet">
  3//     Copyright (c) Tunynet Inc.  All rights reserved.
  4// </copyright> 
  5//------------------------------------------------------------------------------
  6
  7using System;
  8using System.Collections.Generic;
  9using System.Text;
 10using SpaceBuilder.Components;
 11using System.Web.UI.WebControls;
 12using SpaceBuilder.Posts.Configuration;
 13using SpaceBuilder.Posts.Components;
 14using SpaceBuilder.Blogs.Configuration;
 15using TunyNet.Utils;
 16using SpaceBuilder.Blogs.Components;
 17using SpaceBuilder.Controls;
 18using SpaceBuilder.Controls.Utils;
 19using SpaceBuilder.Configuration;
 20using System.Drawing;
 21using System.IO;
 22using SpaceBuilder.Utils;
 23
 24namespace SpaceBuilder.Blogs.Controls
 25...{
 26    /**//// <summary>
 27    /// 用户上传博客附件
 28    /// </summary>
 29    public class UploadBlogAttachments : WeblogAdminThemedControl
 30    ...{
 31        SBContext wlContext = SBContext.Current;
 32
 33        protected override void OnInit(EventArgs e)
 34        ...{
 35            if (SkinName == null)
 36                SkinName = "Skin-UploadBlogAttachment.ascx";
 37
 38            wlContext = SBContext.Current;
 39            base.OnInit(e);
 40        }
 41        Child Controls#region Child Controls
 42
 43        /**//// <summary>
 44        /// 附件上传提示信息
 45        /// 包括大小限制，支持的文件类型等
 46        /// </summary>
 47        Literal tips;
 48        /**//// <summary>
 49        /// 上传控件
 50        /// </summary>
 51        FileUpload blogAttachmentFile;
 52        /**//// <summary>
 53        /// 上传控件输入验证
 54        /// </summary>
 55        CustomValidator blogAttachmentFileCustomValidator;
 56        /**//// <summary>
 57        /// 文件另存名
 58        /// </summary>
 59        TextBox blogAttachmentSaveAsFileName;
 60        /**//// <summary>
 61        /// 上传按钮
 62        /// </summary>
 63        LinkButton uploadBlogAttachmentButton;
 64        /**//// <summary>
 65        /// 操作状态提示信息
 66        /// </summary>
 67        StatusMessage statusMessage;
 68        #endregion
 69
 70        protected override void AttachChildControls()
 71        ...{
 72            tips = FindControl("Tips") as Literal;
 73            blogAttachmentFile = FindControl("BlogAttachmentFile") as FileUpload;
 74            blogAttachmentFileCustomValidator = FindControl("BlogAttachmentFileCustomValidator") as CustomValidator;
 75            blogAttachmentSaveAsFileName = FindControl("BlogAttachmentSaveAsFileName") as TextBox;
 76            statusMessage = FindControl("StatusMessage") as StatusMessage;
 77            uploadBlogAttachmentButton = FindControl("UploadBlogAttachmentButton") as LinkButton;
 78            uploadBlogAttachmentButton.Click += new EventHandler(uploadBlogAttachmentButton_Click);
 79        }
 80
 81        void uploadBlogAttachmentButton_Click(object sender, EventArgs e)
 82        ...{
 83            if (!blogAttachmentFile.HasFile)
 84            ...{
 85                blogAttachmentFileCustomValidator.IsValid = false;
 86                blogAttachmentFileCustomValidator.ErrorMessage = "没有选择要上传的文件";
 87                statusMessage.Visible = true;
 88                statusMessage.Text = "没有选择要上传的文件";
 89                statusMessage.MessageType = StatusMessageType.Error;
 90                return;
 91            }
 92
 93            AttachmentSettings fs = WeblogConfiguration.Instance().AttachmentSettings;
 94            if (fs.ValidateExtensions && !wlContext.User.IsBlogAdministrator)
 95            ...{
 96                if (!fs.ValidationRegex.IsMatch(blogAttachmentFile.FileName))
 97                ...{
 98                    string message = string.Format("只允许上传以下文件类型: {0}.", fs.Extensions.Replace(";", ","));
 99                    blogAttachmentFileCustomValidator.ErrorMessage = message;
100                    statusMessage.Visible = true;
101                    statusMessage.MessageType = StatusMessageType.Error;
102                    statusMessage.Text = message;
103                    return;
104                }
105            }
106            if ((blogAttachmentFile.FileContent.Length / 1024) < WeblogConfiguration.Instance().AttachmentSettings.MaxAttachmentSize)
107            ...{
108                PostAttachment pa = new PostAttachment(blogAttachmentFile.PostedFile);
109                if (!ValueHelper.IsNullOrEmpty(blogAttachmentSaveAsFileName.Text))
110                    pa.FriendlyFileName = WebUtils.HtmlEncode(blogAttachmentSaveAsFileName.Text.Trim());
111
112                pa.CreateDate = DateTime.Now;
113                pa.UserID = wlContext.User.UserID;
114                pa.PostID = 0;
115                pa.SectionID = CurrentWeblog.SectionID;
116                pa.ApplicationType = ApplicationType.Blog;
117                PostAttachments.Add(pa, ApplicationType.Blog);
118
119                //处理水印
120                if (pa.IsImage)
121                ...{
122                    SiteSettings siteSettings = SiteSettingsManager.GetSiteSettings();
123                    if (siteSettings.WatermarkType != WatermarkType.None && siteSettings.EnableWatermarkForBlogAttachment)
124                    ...{
125                        if (pa.Width > siteSettings.WatermarkMinWidth && pa.Height > siteSettings.WatermarkMinHeight)
126                        ...{
127                            Bitmap image = (Bitmap)Bitmap.FromStream(pa.Content, true);
128                            Stream newImageStream = null;
129                            if (siteSettings.WatermarkType == WatermarkType.Text)
130                            ...{
131                                Watermark.AddWatermarkText(image, siteSettings.WatermarkText, siteSettings.WatermarkPosition, siteSettings.WatermarkAlpha, siteSettings.WatermarkQuality, out newImageStream);
132                            }
133                            else if (siteSettings.WatermarkType == WatermarkType.Image)
134                            ...{
135                                Watermark.AddWatermarkImage(image, siteSettings.WatermarkImagePhysicalPath, siteSettings.WatermarkPosition, siteSettings.WatermarkAlpha, siteSettings.WatermarkQuality, out newImageStream);
136                            }
137                            if (newImageStream != null)
138                                pa.Content = newImageStream;
139                        }
140                    }
141                }
142
143                fs.SaveAttachmentToDisk(pa, pa.SectionID, pa.PostID);
144                
145                TunyNet.Web.UI.ModalHelper.ClosePage(Page, "true");
146            }
147            else
148            ...{
149                blogAttachmentFileCustomValidator.ErrorMessage = string.Format("上传附件不能超过{0}K", WeblogConfiguration.Instance().AttachmentSettings.MaxAttachmentSize);
150                statusMessage.Visible = true;
151                statusMessage.MessageType = StatusMessageType.Error;
152                statusMessage.Text = string.Format("上传附件不能超过{0}K", WeblogConfiguration.Instance().AttachmentSettings.MaxAttachmentSize);
153            }
154
155        }
156
157        protected override void OnLoad(EventArgs e)
158        ...{
159            base.OnLoad(e);
160            Header.AddTitle("上传博客附件", wlContext.Context);
161        }
162
163        protected override void OnPreRender(EventArgs e)
164        ...{
165            base.OnPreRender(e);
166
167            tips.Text = string.Format("请将您上传附件的大小限制在 {0} K<br/>支持上传的文件类型：{1}", WeblogConfiguration.Instance().AttachmentSettings.MaxAttachmentSize, WeblogConfiguration.Instance().AttachmentSettings.Extensions);
168        }
169    }
170}
171