/BlogEngine/BlogEngine.NET/widgets/RecentPosts/widget.ascx.cs

// --------------------------------------------------------------------------------------------------------------------

// <summary>

//   The widget.

// </summary>

// --------------------------------------------------------------------------------------------------------------------



namespace Widgets.RecentPosts

{

    using System;

    using System.Collections.Generic;

    using System.Collections.Specialized;

    using System.Globalization;

    using System.Text;

    using System.Web;

    using System.Web.UI;



    using App_Code.Controls;



    using BlogEngine.Core;



    using Resources;



    /// <summary>

    /// The widget.

    /// </summary>

    public partial class Widget : WidgetBase

    {

        #region Constants and Fields



        /// <summary>

        /// The default number of posts.

        /// </summary>

        private const int DefaultNumberOfPosts = 10;



        /// <summary>

        /// The default show comments.

        /// </summary>

        private const bool DefaultShowComments = true;



        /// <summary>

        /// The default show rating.

        /// </summary>

        private const bool DefaultShowRating = true;



        #endregion



        #region Constructors and Destructors



        /// <summary>

        /// Initializes static members of the <see cref="Widget"/> class.

        /// </summary>

        static Widget()

        {

            Post.Saved += (sender, args) => Blog.CurrentInstance.Cache.Remove("widget_recentposts");

            Post.CommentAdded += (sender, args) => Blog.CurrentInstance.Cache.Remove("widget_recentposts");

            Post.CommentRemoved += (sender, args) => Blog.CurrentInstance.Cache.Remove("widget_recentposts");

            Post.Rated += (sender, args) => Blog.CurrentInstance.Cache.Remove("widget_recentposts");

            BlogSettings.Changed += (sender, args) => Blog.CurrentInstance.Cache.Remove("widget_recentposts");

        }



        #endregion



        #region Properties



        /// <summary>

        /// Gets a value indicating whether IsEditable.

        /// </summary>

        public override bool IsEditable

        {

            get

            {

                return true;

            }

        }



        /// <summary>

        /// Gets Name.

        /// </summary>

        public override string Name

        {

            get

            {

                return "RecentPosts";

            }

        }



        #endregion



        #region Public Methods



        /// <summary>

        /// This method works as a substitute for Page_Load. You should use this method for

        /// data binding etc. instead of Page_Load.

        /// </summary>

        public override void LoadWidget()

        {

            var settings = this.GetSettings();

            var numberOfPosts = DefaultNumberOfPosts;

            if (settings.ContainsKey("numberofposts"))

            {

                numberOfPosts = int.Parse(settings["numberofposts"]);

            }



            if (Blog.CurrentInstance.Cache["widget_recentposts"] == null)

            {

                var visiblePosts = Post.Posts.FindAll(p => p.IsVisibleToPublic);



                var max = Math.Min(visiblePosts.Count, numberOfPosts);

                var list = visiblePosts.GetRange(0, max);

                Blog.CurrentInstance.Cache.Insert("widget_recentposts", list);

            }



            var content = RenderPosts((List<Post>)Blog.CurrentInstance.Cache["widget_recentposts"], settings);



            var html = new LiteralControl(content);

                

                // new LiteralControl((string)Blog.CurrentInstance.Cache["widget_recentposts"]);

            this.phPosts.Controls.Add(html);

        }



        #endregion



        #region Methods



        /// <summary>

        /// Renders the posts.

        /// </summary>

        /// <param name="posts">The posts.</param>

        /// <param name="settings">The settings.</param>

        /// <returns>The rendered html.</returns>

        private static string RenderPosts(List<Post> posts, StringDictionary settings)

        {

            if (posts.Count == 0)

            {

                // Blog.CurrentInstance.Cache.Insert("widget_recentposts", "<p>" + Resources.labels.none + "</p>");

                return string.Format("<p>{0}</p>", labels.none);

            }



            var sb = new StringBuilder();

            sb.Append("<ul class=\"recentPosts\" id=\"recentPosts\">");



            var showComments = DefaultShowComments;

            var showRating = DefaultShowRating;

            if (settings.ContainsKey("showcomments"))

            {

                bool.TryParse(settings["showcomments"], out showComments);

            }



            if (settings.ContainsKey("showrating"))

            {

                bool.TryParse(settings["showrating"], out showRating);

            }



            foreach (var post in posts)

            {

                if (!post.IsVisibleToPublic)

                {

                    continue;

                }



                var rating = Math.Round(post.Rating, 1).ToString(CultureInfo.InvariantCulture);



                const string LinkFormat = "<li><a href=\"{0}\">{1}</a>{2}{3}</li>";



                var comments = string.Format("<span>{0}: {1}</span>", labels.comments, post.ApprovedComments.Count);



                if (BlogSettings.Instance.ModerationType == BlogSettings.Moderation.Disqus)

                {

                    comments = string.Format(

                        "<span><a href=\"{0}#disqus_thread\">{1}</a></span>", post.PermaLink, labels.comments);

                }



                var rate = string.Format("<span>{0}: {1} / {2}</span>", labels.rating, rating, post.Raters);



                if (!showComments || !BlogSettings.Instance.IsCommentsEnabled)

                {

                    comments = null;

                }



                if (!showRating || !BlogSettings.Instance.EnableRating)

                {

                    rate = null;

                }

                else if (post.Raters == 0)

                {

                    rate = string.Format("<span>{0}</span>", labels.notRatedYet);

                }



                sb.AppendFormat(LinkFormat, post.RelativeLink, HttpUtility.HtmlEncode(post.Title), comments, rate);

            }



            sb.Append("</ul>");



            // Blog.CurrentInstance.Cache.Insert("widget_recentposts", sb.ToString());

            return sb.ToString();

        }



        #endregion

    }

}