forumlistbox.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.Collections;
using System.Web.UI.WebControls;

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

namespace CommunityServer.Discussions.Controls 
{

    /// <summary>
    /// Summary description for ForumListBox.
    /// </summary>
    public class ForumListBox : ListBox 
    {
        public ForumListBox() 
        {
            DataBind();
        }

        public override void DataBind() 
        {
            ArrayList forumGroups;

            // Get all forum groups
            if (this.ForumMode == ControlUserMode.User)
                forumGroups = ForumGroups.GetForumGroups(false, false);
            else
                forumGroups = ForumGroups.GetForumGroups(false);

            foreach (Group group in forumGroups) 
            {
                User user = CSContext.Current.User;

				// quick hack to keep recursive from showing
				if (Items.FindByValue("g-" + group.GroupID) == null) {

					// Get the sections for the group
					if(this.ForumMode == ControlUserMode.User)
						group.Sections = Forums.GetForumsByForumGroupID(group.GroupID,true,false,false,false);
					else
						group.Sections = Forums.GetForumsByForumGroupID(group.GroupID,false,true,false,false);

					if(this.ShowEmptyForumGroups)
					{
						// Add the forum group
						//
						Items.Add(new ListItem(group.Name, "g-" + group.GroupID));

						RecursiveAddForum (0,  group.Sections);

						// Add the forum group
						//
						Items.Add(new ListItem("", "s"));
					}
					else
					{
						if(group.HasSections) 
						{
							// Add the forum group
							//
							Items.Add(new ListItem(group.Name, "g-" + group.GroupID));

							RecursiveAddForum (0,  group.Sections);

							// Add the forum group
							//
							Items.Add(new ListItem("", "s"));

						}
					}

				}

            }
        }

		private bool _ShowEmptyForumGroups = false;
		public bool ShowEmptyForumGroups
		{
			get
			{
				return _ShowEmptyForumGroups;
			}
			set
			{
				_ShowEmptyForumGroups = value;
			}
		}

        public int SelectedForum 
        {
            get 
            {
                if (base.SelectedValue.StartsWith("f-"))
                    return int.Parse(base.SelectedValue.Replace("f-", ""));
                return 0;
            }
            set 
            {
                if (value > 0) 
                {
                    if (base.SelectedValue != "")
                        Items.FindByValue( base.SelectedValue ).Selected = false;

                    Items.FindByValue("f-" + value).Selected = true;
                }
            }
        }


        public int SelectedForumGroup 
        {
            get 
            {
                if (base.SelectedValue.StartsWith("f")) 
                {
                    return Forums.GetForum(int.Parse(base.SelectedValue.Replace("f-", ""))).GroupID;
                } 
                else if(base.SelectedValue.StartsWith("g"))
                {
                    return int.Parse(base.SelectedValue.Replace("g-", ""));
                }
				else
					return 0;
            }
            set 
            { 
                // Deselect current item
                if (base.SelectedValue != "")
                    Items.FindByValue( base.SelectedValue ).Selected = false;

                Items.FindByValue("g-" + value).Selected = true;
            }
        }

        private void RecursiveAddForum (int depth, ArrayList forums) 
        {

            
            foreach (Forum forum in forums) 
            {
                // We only go 3 deep
                //
                switch (depth) 
                {
                    case 0:
                        Items.Add(new ListItem(ResourceManager.GetString("Navigation_JumpDropDownList_Indent1") + forum.Name, "f-" + forum.SectionID.ToString()));
                        if (forum.Sections.Count > 0)
                            RecursiveAddForum((depth + 1), forum.Sections);
                        break;

                    case 1:
                        Items.Add(new ListItem(ResourceManager.GetString("Navigation_JumpDropDownList_Indent2") + forum.Name, "f-" + forum.SectionID.ToString()));
                        if (forum.Sections.Count > 0)
                            RecursiveAddForum((depth + 1), forum.Sections);
                        break;

                    case 2:
                        Items.Add(new ListItem(ResourceManager.GetString("Navigation_JumpDropDownList_Indent3") + forum.Name, "f-" + forum.SectionID.ToString()));
                        if (forum.Sections.Count > 0)
                            RecursiveAddForum((depth + 1), forum.Sections);
                        break;

                    default:
                        return;

                }
            }
        }


        [
        System.ComponentModel.DefaultValue( ControlUserMode.User ),
        ]
        public virtual ControlUserMode ForumMode 
        {
            get 
            {
                Object state = ViewState["ForumMode"];
                if ( state != null ) 
                {
                    return (ControlUserMode)state;
                }
                return ControlUserMode.User;
            }
            set 
            {
                ViewState["ForumMode"] = value;
            }
        }

    }
}