Sitefinity- Filtering Tags for specific blog in a Tag Cloud

Recently i was working on a sitefinity project. The problem i was facing was, there are 5 blogs in my website and i want to show all the blogs separately on different pages.
When i use the Tags List control on the page, it is showing all the tags from all the blogs.
But my requirement is, i want only Tags related to specific blog.

I managed to come up with a simple solution that requires creating a custom control that inherits from TagsList, implementing a simple property and overriding one method - InitializeControls.

Save this class file into App_Code folder.
Make a entry into web.config file.(in <toolboxcontrols> tag)
<add name="FilteredTags Cloud" section="Tags & Categories" type="Ramp.TagsListFiltered, App_Code" description="Displays Blog related tags" />

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using Telerik.Cms.Engine.WebControls.Categories;
using Telerik.Cms.Engine.WebControls.Tags;
using Telerik.Cms.Web.UI;
using System.ComponentModel;
using System.Collections;
using Telerik.Cms.Engine;
using Telerik.Blogs;
using Telerik.Cms;
using System.Web.UI;
using Telerik.Cms.Engine.Data;
using System.Web.UI.WebControls;
using Telerik.Web;


namespace Ramp
{
/// 

/// Summary description for TagsListFiltered
/// 
public class TagsListFiltered : TagsList
{
public TagsListFiltered()
{

}

#region Private contstraints
private Guid[] selectedBlogs = new Guid[] { };
private BlogManager blogManager;
#endregion

public override string LayoutTemplatePath
{
 get
 {
    return "~/Sitefinity/ControlTemplates/Generic_Content/TagsList.ascx";
 }
}

[TypeConverter("Telerik.Blogs.WebControls.SelectedBlogsConverter, Telerik.Blogs")]
[WebEditor("Telerik.Blogs.WebControls.BlogsSelector, Telerik.Blogs")]
public Guid[] SelectedBlogs
{
    get
    {
        return this.selectedBlogs;
    }
    set
    {
        this.selectedBlogs = value;
    }
}

#region Methods

protected override void InitializeControls(Control controlContainer)
{
 IList<ITag> blogTags = new List<ITag>();

 blogManager = new BlogManager("Blogs");
 if (this.selectedBlogs.Length == 0)
 {
    // call the base class we will not change anything. 
    //base.BindCategories();
 }
 else
 {
    IList allBlogs = blogManager.GetBlogs(selectedBlogs);
    foreach (IBlog blog in allBlogs)
    {
        IList blogPosts = blog.Posts;
        foreach (IContent post in blogPosts)
        {
            IList postTags = blogManager.Content.GetTags(post.ID);
            foreach (ITag tag in postTags)
            {
                if (!blogTags.Contains(tag))
                {
                    blogTags.Add(tag);
                }
            }
        }
    }

    if (this.DefaultDisplayMode == DisplayMode.List)
    {
        this.TagsRepeaterList.DataSource = blogTags;
        this.TagsRepeaterList.ItemDataBound += new RepeaterItemEventHandler(this.TagsRepeaterList_ItemDataBound);
        this.TagsRepeaterList.DataBind();
    }
    else
    {
        this.TagsRepeaterCloud.DataSource = blogTags;
        this.TagsRepeaterCloud.ItemDataBound += new RepeaterItemEventHandler(this.TagsRepeaterCloud_ItemDataBound);
        this.TagsRepeaterCloud.DataBind();
    }

    if (this.ControlTitleControl != null)
    {
        this.ControlTitleControl.Text = this.ControlTitle;
    }

    this.TagsRepeaterCloud.Visible = this.DefaultDisplayMode == DisplayMode.Cloud;
    this.TagsRepeaterList.Visible = this.DefaultDisplayMode == DisplayMode.List;
    if (this.DisplayCloudLink != null)
    {
        this.DisplayCloudLink.Enabled = this.DefaultDisplayMode == DisplayMode.List;
        this.DisplayCloudLink.CommandName = "DisplayCloud";
        this.DisplayCloudLink.Command += new CommandEventHandler(this.Button_CommandNew);
    }
    if (this.DisplayListLink != null)
    {
        this.DisplayListLink.Enabled = this.DefaultDisplayMode == DisplayMode.Cloud;
        this.DisplayListLink.CommandName = "DisplayList";
        this.DisplayListLink.Command += new CommandEventHandler(this.Button_CommandNew);
    }
 }
}

private void Button_CommandNew(object sender, CommandEventArgs e)
{
 string commandName = e.CommandName;
 if (commandName != null)
 {
    if (!(commandName == "DisplayCloud"))
    {
        if (!(commandName == "DisplayList"))
        {
            return;
        }
    }
    else
    {
        this.DefaultDisplayMode = DisplayMode.Cloud;
        base.ChildControlsCreated = false;
        return;
    }
    this.DefaultDisplayMode = DisplayMode.List;
    base.ChildControlsCreated = false;
 }
}

private void TagsRepeaterCloud_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
 if ((e.Item.ItemType == ListItemType.Item) || (e.Item.ItemType == ListItemType.AlternatingItem))
 {
    int num3;
    ITag dataItem = (ITag)e.Item.DataItem;
    HyperLink link = (HyperLink)e.Item.FindControl("tagLink");
    link.Text = dataItem.TagName;
    link.NavigateUrl = (this.TagKeyType == TagKeyTypes.ID) ? base.ResolveUrl(this.TaggedContentUrl + "?" + this.TagItemKey + "=" + dataItem.ID.ToString()) : base.ResolveUrl(this.TaggedContentUrl + "?" + this.TagItemKey + "=" + dataItem.TagName);
    IUrlService languageService = UrlServices.GetLanguageService();
    if (languageService != null)
    {
        link.NavigateUrl = languageService.ResolveLanguageUrl(link.NavigateUrl);
    }
    float num = Convert.ToSingle(this.Manager.ContentCount(SelectedBlogs));
    float num4 = Convert.ToSingle(dataItem.ContentsTagged) / num;
    if (num4 > 0.83)
    {
        num3 = 1;
    }
    else if (num4 > 0.66)
    {
        num3 = 2;
    }
    else if (num4 > 0.5)
    {
        num3 = 3;
    }
    else if (num4 > 0.33)
    {
        num3 = 4;
    }
    else
    {
        num3 = (num4 > 0.16) ? 5 : 6;
    }
    string str = link.CssClass + num3.ToString();
    link.CssClass = str;
 }
}

private void TagsRepeaterList_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
 if ((e.Item.ItemType == ListItemType.Item) || (e.Item.ItemType == ListItemType.AlternatingItem))
 {
    ITag dataItem = (ITag)e.Item.DataItem;
    HyperLink link = (HyperLink)e.Item.FindControl("tagLink");
    link.Text = dataItem.TagName;
    link.NavigateUrl = (this.TagKeyType == TagKeyTypes.ID) ? base.ResolveUrl(this.TaggedContentUrl + "?" + this.TagItemKey + "=" + dataItem.ID.ToString()) : base.ResolveUrl(this.TaggedContentUrl + "?" + this.TagItemKey + "=" + dataItem.TagName);
    IUrlService languageService = UrlServices.GetLanguageService();
    if (languageService != null)
    {
        link.NavigateUrl = languageService.ResolveLanguageUrl(link.NavigateUrl);
    }
    ITextControl control = (ITextControl)e.Item.FindControl("taggedContentCount");
    control.Text = dataItem.ContentsTagged.ToString();
 }
}

#endregion
}
}