textpost.cs

本系统是在asp版《在线文件管理器》的基础上设计制作

//------------------------------------------------------------------------------
// <copyright company="Telligent Systems">
//     Copyright (c) Telligent Systems Corporation.  All rights reserved.
// </copyright> 
//------------------------------------------------------------------------------

using System;
using System.Web.UI;
using System.Web.UI.WebControls;

using CommunityServer.Components;
using CommunityServer.Controls;
using CommunityServer.Discussions.Components;

namespace CommunityServer.Discussions.Controls.PostDisplay 
{

    public class TextPost : SkinnedWebControl 
    {

        string skinFilename = "PostType-TextPost.ascx";

        public TextPost() 
        {

            // Assign a default template name
            if (SkinFilename == null)
                SkinFilename = skinFilename;
        }

        // *********************************************************************
        //  Initializeskin
        //
        /// <summary>
        /// Initializes the user control loaded in CreateChildControls. Initialization
        /// consists of finding well known control names and wiring up any necessary events.
        /// </summary>
        /// 
        // ********************************************************************/ 
        protected override void InitializeSkin(Control skin) 
        {
            // very minimal code should be, to keep the speed of post display
            // quick and efficient.  item left to optimize are EditNotes.
            //

            Literal body;
            Literal signature;
            Literal editNotes;

            // Find the controls we need
            //
            body = (Literal) skin.FindControl("Body");
            signature = (Literal) skin.FindControl("Signature");
            editNotes = (Literal) skin.FindControl("EditNotes");

            body.Text = Post.FormattedBody;

            ForumPost post = this.Post;
            
            // Inform the following controls that the user should be seen as anonymous
            //
            bool swowUserAsAnonymous = (post.IsAnonymousPost && CSContext.Current.SiteSettings.EnableUserPostingAsAnonymous && post.Forum.EnableAnonymousPostingForUsers);

            // TODO eventually we'll add support for multiple attachments, this would need to be improved to handle more than 1 image attachment
            string fileName = Post.AttachmentFilename;
            if (fileName != "" && fileName != null) 
            {
                string fileExtension = fileName.Substring(fileName.LastIndexOf(".") + 1);
                if( fileExtension != null && fileExtension != string.Empty ) 
                {
                    fileExtension = fileExtension.ToLower();

                    if( CSContext.Current.SiteSettings.EnableInlinedImages ) 
                    {
                        string supportedTypes = CSContext.Current.SiteSettings.SupportedInlinedImageTypes;
                        if( supportedTypes != null && supportedTypes != string.Empty ) 
                        {
                            string[] supportedImageTypes = supportedTypes.Split(';');

                            int height = CSContext.Current.SiteSettings.InlinedImageHeight;
                            int width = CSContext.Current.SiteSettings.InlinedImageWidth;

                            foreach( string imageType in supportedImageTypes ) 
                            {
                                if( fileExtension == imageType ) 
                                {

                                    // format the image element to constrain the height and width of the image, if the admin configures it
                                    body.Text += String.Format("<br /><a href='{0}' target='_blank'><img src='{1}' border='0' onload=\"{2}{3}\"></a>" 
                                        , Globals.GetSiteUrls().PostAttachment(post.PostID), Globals.GetSiteUrls().PostAttachment(post.PostID)
                                        , width != -1 ? String.Format("if(this.width>{0})this.width={0};", width ) : String.Empty
                                        , height != -1 ? String.Format("if(this.height>{0})this.height={0};", height ) : String.Empty );

                                    // break out of the for loop
                                    break;
                                }
                            }
                        }
                    }
                }
            }

            // set the user's formatted signature
            //
			if (Post.Section.ForumType == ForumType.Normal &&
				CSContext.Current.SiteSettings.EnableUserSignatures &&
                !swowUserAsAnonymous)
			{
				signature.Text = Globals.FormatSignature(Post.User.Profile.SignatureFormatted);
			}

            // construct the user object
            //
            User user = CSContext.Current.User;	

            if (CSContext.Current.SiteSettings.DisplayEditNotesInPost) 
            {
                // TDD 3/18/2004
                // This is another huge performance hit. Again we should only be processing the edit notes
                // once when they are initially created not for each view of the post.
                if (!user.IsAnonymous) 
                {
                    if (user.IsForumAdministrator || user.IsModerator) 
                    {
                        if (Post.EditNotes != null) 
                        {
                            string formattedNotes = Globals.HtmlNewLine + Globals.HtmlNewLine + Globals.HtmlNewLine + "<div width=\"100%\" class=\"txt3\">" + Post.EditNotes + "</div>";
                            editNotes.Text = formattedNotes.Replace("\n", Globals.HtmlNewLine);
                        }
                    }
                }
            }
        }

        public ForumPost Post 
        {
            get 
            {
                if ( _post == null ) 
                {
                    Object state = ViewState["Post"];
                    if ( state != null ) 
                    {
                        Int32 postID = (Int32)state;
                        _post = Posts.GetPost( postID, CSContext.Current.User.UserID, false );
                    }
                }
                return _post;
            }
            set 
            {
                _post = value;
                if ( _post != null ) 
                {
                    ViewState[ "Post" ] = _post.PostID;
                } 
                else 
                {
                    ViewState.Remove( "Post" );
                }
            }
        }

        ForumPost _post;

    }

}