/CBR/CBR.Core/Services/WorkspaceService.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using CBR.Core.Models;

using CBR.Core.Helpers;

using System.IO;



namespace CBR.Core.Services

{

    /// <summary>

    /// Provide access to the workspace settings

    /// </summary>

    public class WorkspaceService

    {

        #region ----------------SINGLETON----------------



		public static readonly WorkspaceService Instance = new WorkspaceService();



		/// <summary>

		/// Private constructor for singleton pattern

		/// </summary>

        private WorkspaceService()

		{

		}



		#endregion



        #region ----------------PROPERTIES----------------



        private WorkspaceInfo _Settings = new WorkspaceInfo();

        public WorkspaceInfo Settings

        {

            get { return _Settings; }

            set

            {

                if (value != null && value != _Settings) _Settings = value;

            }

        }



        #endregion



        #region ----------------METHODS----------------



        public void AddRecent(Catalog catlog)

        {

            if (Settings.RecentCatalogList == null)

                Settings.RecentCatalogList = new List<RecentFileInfo>();



            Add(Path.GetDirectoryName(catlog.CatalogFilePath), Path.GetFileName(catlog.CatalogFilePath), Settings.RecentCatalogList);

        }



        public void AddRecent(Book bk)

        {

            if (Settings.RecentFileList == null)

                Settings.RecentFileList = new List<RecentFileInfo>();



            Add(Path.GetDirectoryName(bk.FilePath), Path.GetFileName(bk.FilePath), Settings.RecentFileList);

        }



        internal void Add(string filePath, string fileName, List<RecentFileInfo> list)

        {

            try

            {

                RecentFileInfo rfi = list.Find(p => p.FileName == fileName && p.FilePath == filePath);

                if (rfi == null)

                {

                    list.Add(new RecentFileInfo()

                    {

                        FilePath = filePath,

                        FileName = fileName,

                        IsPined = false,

                        LastAccess = DateTime.Now

                    });

                    Mediator.Instance.NotifyColleagues(ViewModelBaseMessages.RecentListChanged, list);

                }

                else

                {

                    rfi.LastAccess = DateTime.Now;

                    Mediator.Instance.NotifyColleagues(ViewModelBaseMessages.RecentFileChanged, rfi);

                }

                //check the max

                int execiding = list.Count - Settings.MaxRecentFile;

                if (execiding > 0)

                {

                    List<RecentFileInfo> temp = new List<RecentFileInfo>();

                    temp.AddRange(list.OrderBy(o => o.LastAccess).Where(p => p.IsPined == false));



                    for (int i = 0; i < execiding; i++)

                        list.Remove(temp[i]);



                    Mediator.Instance.NotifyColleagues(ViewModelBaseMessages.RecentListChanged, list);

                }

            }

            catch (Exception err)

            {

                ExceptionHelper.Manage("CatalogService:Load", err);

            }

        }



        #endregion

    }

}