threadview.cs

community server 源码

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

using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using CommunityServer.Components;
using CommunityServer.Controls;
using CommunityServer.Discussions.Components;

namespace CommunityServer.Discussions.Controls 
{
    // *********************************************************************
    //  ThreadView
    //
    /// <summary>
    /// This server control is used to display top level threads. Note, a thread
    /// is a post with more information. The Thread class inherits from the Post
    /// class.
    /// </summary>
    /// 
    // ********************************************************************/
    public class ThreadView : TemplatedWebControl
    {
        #region Child Controls

        //Control threadDisplay;
        Control noThreadsToDisplay;
        internal Repeater announcements;
        internal Repeater threads;
		internal ForumRepeater subForums;
		Control subForumContainer;
        ForumPager pager, pager2;
        CurrentPage currentPage, currentPage2;
        ThreadSet threadSet;
        DateFilter dateFilter;
        InlineTextEdit forumName;
        InlineTextEdit forumDescription;
        Label forumFilterText;
        EmailNotificationDropDownList ddlTracking;
        ThreadSortDropDownList threadSortddl;
        SortOrderDropDownList sortOrderddl;
        ForumDropDownList forumFilterddl;
        Button sortButton;
        Button rememberSettingsButton;
        HideReadPostsDropDownList hideReadPosts;
        FilterUsersDropDownList filterUsers;

        LinkButton moveThreads;
        ForumImageButton newPostButton;
		ForumImageButton poll;
		ForumImageButton newPostButtonDown;
		ForumImageButton forumSettings;
        HtmlTableRow filterTopicRow;
        HtmlTableRow emailNotificationRow;
        //Control postbackSourceControl;

		AggregateRssLink aggregateRssLink;
		RssLink rssLink;

        CSContext csContext = CSContext.Current;
        internal Forum forum;
        bool hideReadPost = false;
        bool authUseLocalFilter = false; // Use local filter when user is authenticated, otherwise use previous remembered values.
        string anonymousQuerystringFilter = "PageIndex={0}&sb={1}&d={2}&df={3}";
        string authQuerystringFilter = "PageIndex={0}&sb={1}&d={2}&df={3}&uf={4}&hrp={5}&lf={6}";

        ThreadViewMode mode = ThreadViewMode.Default;
        SortThreadsBy sortBy = SortThreadsBy.LastPost;
        SortOrder sortOrder = SortOrder.Descending;
        ThreadDateFilterMode dateFilterMode = ThreadDateFilterMode.TwoMonths;
        ThreadUsersFilter userFilter = ThreadUsersFilter.All;
		PostMediaType postMedia = PostMediaType.Empty;


        #endregion

        public ThreadView()
        {
            try 
            {
                int modeFromQS = Int32.Parse( csContext.Context.Request.QueryString["mode"] );

                // What mode are we running in?
                //
                if (modeFromQS > 0)
                    mode = (ThreadViewMode) modeFromQS;
            } 
            catch 
            {
                mode = ThreadViewMode.Default;
            }

			dateFilterMode = csContext.SiteSettings.DefaultThreadDateFilter;
        }

        protected override void OnInit(EventArgs e) 
        {
            if (SkinName == null)                
                ExternalSkinFileName = "View-Threads.ascx";
            else 
                ExternalSkinFileName = SkinName;
			
            // Private messages should not be seen like this
            //
            //if ((csContext.ForumID == 0) && (csContext.User.IsAnonymous))
            if (csContext.SectionID == 0)
                throw new CSException(CSExceptionType.SectionNotFound, csContext.SectionID.ToString());

            base.OnInit(e);
        }
		
        protected override void OnLoad(EventArgs e) 
        {
            DataBind();

            base.OnLoad(e);
        }

        #region DataBind

        public override void DataBind() 
        {
            base.DataBind();
            
            // Because the table of threads is databound, visibility on the the checkbox column 
            // for the multiple move thread functionality is done as part of the databinding process,
            // in the skin.  Because the move multiple threads link button is not databound, and to 
            // keep the skin as clean as possible its visibility is set here.  
            if (!csContext.User.IsForumAdministrator &&
                !csContext.User.IsModerator)
            {
                if (moveThreads != null)
                {
                    moveThreads.Visible = false;
                }
            }

            #region Init by ThreadViewMode
            // Init by ThreadViewMode
            //
            switch (mode) 
            {
                case ThreadViewMode.Active:
                    if (forumName != null)
                        forumName.Text = ResourceManager.GetString("ViewActiveThreads_Title");

                    Head.AddSiteNameTitle(ResourceManager.GetString("ViewActiveThreads_Title"),Context);
                    UsersOnline.SetLocation(ResourceManager.GetString("ViewActiveThreads_Title"));

                    if (forumDescription != null)
                        forumDescription.Text = ResourceManager.GetString("ViewActiveThreads_Description");                        
                    break;

                case ThreadViewMode.Unanswered:
                    if (forumName != null)
                        forumName.Text = ResourceManager.GetString("ViewUnansweredThreads_Title");

                    Head.AddSiteNameTitle(ResourceManager.GetString("ViewUnansweredThreads_Title"),Context);
                    UsersOnline.SetLocation(ResourceManager.GetString("ViewUnansweredThreads_Title"));

                    if (forumDescription != null)
                        forumDescription.Text = ResourceManager.GetString("ViewUnansweredThreads_Description");
                    break;

                case ThreadViewMode.NotRead:
                    if (forumName != null)
                        forumName.Text = ResourceManager.GetString("ViewNotReadThreads_Title");

                    Head.AddSiteNameTitle(ResourceManager.GetString("ViewNotReadThreads_Title"),Context);
                    UsersOnline.SetLocation(ResourceManager.GetString("ViewNotReadThreads_Title"));

                    if (forumDescription != null)
                        forumDescription.Text = ResourceManager.GetString("ViewNotReadThreads_Description");
                    break;

                case ThreadViewMode.PrivateMessages:
                    if (forumName != null)
                        forumName.Text = ResourceManager.GetString("PrivateMessages_Title");

                    Head.AddSiteNameTitle(ResourceManager.GetString("PrivateMessages_Title"),Context);
                    UsersOnline.SetLocation(ResourceManager.GetString("PrivateMessages_Title"));

                    if (forumDescription != null)
                        forumDescription.Text = ResourceManager.GetString("PrivateMessages_Description");
                    break;

				case ThreadViewMode.Videos:
					if (forumName != null)
						forumName.Text = ResourceManager.GetString("ViewVideos_Title");

                    Head.AddSiteNameTitle(ResourceManager.GetString("ViewVideos_Title"),Context);
                    UsersOnline.SetLocation(ResourceManager.GetString("ViewVideos_Title"));

					if (forumDescription != null)
						forumDescription.Text = ResourceManager.GetString("ViewVideos_Description");
					break;

                case ThreadViewMode.MyForums:
                    // Don't need filter when viewing My Forums
                    if (forumFilterddl != null)
                        forumFilterddl.Visible = false;

                    if (forumFilterText != null)
                        forumFilterText.Visible = false;

                    if(forumName != null)
                        forumName.Text = ResourceManager.GetString("ViewMyForumsThreads_Title");

                    Head.AddSiteNameTitle(ResourceManager.GetString("ViewMyForumsThreads_Title"),Context);
                    UsersOnline.SetLocation(ResourceManager.GetString("ViewMyForumsThreads_Title"));

                    if(forumDescription != null)
                        forumDescription.Text = ResourceManager.GetString("ViewMyForumsThreads_Description");
                    break;

                default:
                    //don't need filter when viewing a forum by default
                    if (forumFilterddl != null)
                        forumFilterddl.Visible = false;

                    if (forumFilterText != null)
                        forumFilterText.Visible = false;
                    break;
            }
            #endregion

            if (sortButton != null) 
                sortButton.Text = ResourceManager.GetString("ViewThreads_SortThreads");

            if (rememberSettingsButton != null) 
                rememberSettingsButton.Text = ResourceManager.GetString("ViewThreads_RememberSettings");

            if (dateFilter == null)
                dateFilter = new DateFilter();

            // Apply filtering values on controls when not postback
            //
            if (!Page.IsPostBack)
                SetFilteringControlValues();

            // Populate threads list
            //
            DateTime dateFilterValue;
            int forumID = csContext.SectionID;
            
            #region Load forum details by ThreadViewMode
            // Load forum details by ThreadViewMode
            //
            try 
            {
                switch (mode) 
                {
                    case ThreadViewMode.Active:                        
                        if (forumFilterddl.SelectedForum > 0)
                            forum = Forums.GetForum( forumFilterddl.SelectedForum, true, true );
                        else
                            forum = new Forum(forumFilterddl.SelectedForum);
                        break;

                    case ThreadViewMode.Unanswered:
                        if (forumFilterddl.SelectedForum > 0)
                            forum = Forums.GetForum( forumFilterddl.SelectedForum, true, true );
                        else
                            forum = new Forum(forumFilterddl.SelectedForum);
                        break;

                    case ThreadViewMode.NotRead:
                        if (forumFilterddl.SelectedForum > 0)
                            forum = Forums.GetForum( forumFilterddl.SelectedForum, true, true );
                        else
                            forum = new Forum(forumFilterddl.SelectedForum);
                        break;

                    case ThreadViewMode.PrivateMessages:
                        //TODO: 0 can not be used to hard code Private Forum
                        forum = Forums.GetForum(0);
                        break;

                    case ThreadViewMode.MyForums:
                        // Don't need filter when viewing My Forums
                        break;

					case ThreadViewMode.Videos:
						if (forumFilterddl.SelectedForum > 0)
							forum = Forums.GetForum(forumFilterddl.SelectedForum, true, true);
						else
							forum = new Forum(forumFilterddl.SelectedForum);
						break;

                    default:
                        // Don't need filter when viewing a forum by default
                        if (forumID > 0) 
                        {
                            forum = Forums.GetForum( forumID, true, true );
                            Permissions.AccessCheck( forum, Permission.View, csContext.User );

							bool isAdmin = csContext.User.IsForumAdministrator;
							if(isAdmin)
								AjaxManager.Register(this,"QuickForumEdit");

							if(forumName != null)
							{
								forumName.Text = forum.Name;
								if(isAdmin)
								{
									forumName.AjaxClientID = this.ClientID;
									forumName.AjaxFunction= string.Format("QuickForumEdit.UpdateForumName('{0}',this.innerHTML,null);",this.ClientID);
								}
		
							}
                            if(forumDescription != null) {
                                forumDescription.Text = forum.Description;
								if(isAdmin)
								{
									forumDescription.AjaxClientID = this.ClientID;
									forumDescription.AjaxFunction= string.Format("QuickForumEdit.UpdateForumDescription('{0}',this.innerHTML,null);",this.ClientID);
								}

                            }

                            Head.AddMetaDescription(Globals.HtmlEncode(forum.Description),Context);
                            Head.AddSiteNameTitle(Globals.HtmlEncode(forum.Name),Context);
                            if(this.forum.IsPrivate)
                            {
                                UsersOnline.PrivateLocation();
                            }
                            else
                            {
                                UsersOnline.SetLocation(forum.Name);
                            }

                        }
                        break;
                }
            } 
            catch( Exception ex )
            {
                throw new CSException(CSExceptionType.SectionNotFound, csContext.SectionID.ToString(), ex );
            }
            #endregion


            #region Check user's permissions
            // Check user's permissions on forum.
            // Also set new post button.
            //
            if (mode != ThreadViewMode.MyForums)
            {
                User user = csContext.User;
                if( forum.SectionID > 0 ) 
                {
                    // TODO: Rollback to initial approach after permissions on 
                    // subforums are implemented.
                    //
                    // Note: This is a temporary solution untill permissions on subforums 
                    // are handled properly.
                    ForumPermission p;

                    if (forum.ParentID > 0)
                    {
                        // Lookup for parent forum and verify credentials against it
                        //
                        Section parentSection = Forums.GetTopmostParentSection( forum.ParentID );
                        if (parentSection == null)
                            throw new CSException( CSExceptionType.AccessDenied );

                        p = parentSection.ResolvePermission( user ) as ForumPermission;
                    } 
                    else
                    {
                        // No subforums
                        //
                        p = forum.ResolvePermission( user ) as ForumPermission;
                    }
                                            
                    /* Initial approach
                    ForumPermission p = forum.ResolvePermission( user ) as ForumPermission;
                    */

                    if( !p.Read )
                        throw new CSException( CSExceptionType.AccessDenied );

					if ((!p.Post) || ((mode != ThreadViewMode.Default) && (mode != ThreadViewMode.PrivateMessages)))
					{
						if (newPostButton != null)
							newPostButton.Visible = false;

						if (newPostButtonDown != null)
							newPostButtonDown.Visible = false;
					}

					if ((!p.CreatePoll) || ((mode != ThreadViewMode.Default) && (mode != ThreadViewMode.PrivateMessages)))
					{
						if (poll != null)
							poll.Visible = false;
					}