using System.Linq;

using System.Collections.Generic;

using System.IO;

namespace MapStudio.UI

{

public class RecentFileHandler

{

const int MRUnumber = 6;

public static void LoadRecentList(string filePath, List<string> recentList)

{

recentList.Clear();

if (File.Exists(filePath))

{

StreamReader listToRead = new StreamReader(filePath); //read file stream

string line;

while ((line = listToRead.ReadLine()) != null) //read each line until end of file

{

if ((Directory.Exists(line) || File.Exists(line)) && !recentList.Contains(line))

recentList.Add(line); //insert to list

}

listToRead.Close(); //close the stream

}

}

public static void SaveRecentFile(string recentFile, string filePath, List<string> recentList)

{

if (recentList.Contains(recentFile))

return;

LoadRecentList(filePath, recentList); //load list from file

if (!(recentList.Contains(recentFile))) //prevent duplication on recent list

recentList.Insert(0, recentFile); //insert given path into list

recentList = recentList.Distinct().ToList();

//keep list number not exceeded the given value

while (recentList.Count > MRUnumber) {

recentList.RemoveAt(MRUnumber);

}

//writing menu list to file

//create file called "Recent.txt" located on app folder

StreamWriter stringToWrite =

new StreamWriter(filePath);

foreach (string item in recentList)

{

stringToWrite.WriteLine(item); //write list to stream

}

stringToWrite.Flush(); //write stream to file

stringToWrite.Close(); //close the stream and reclaim memory

}

}

}