/*
 *  <Samsung Playlist Creator, creates and modifies playlist's for some Samsung digitial audio players>
 *   Copyright (C) 2007  Jmaxxz
 * 
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 * 
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *  You should have received a copy of the GNU General Public License along
 *  with this program; if not, write to the Free Software Foundation, Inc.,
 *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

/**
 * Sorry for the bad formating, Visual Studios 2003 in Vista seems to have a glitch where
 * it randomly inserts tabs into strings, to save myself the trouble of trying to find all
 * of these goof ups I just replace tabs with "" everynow and then. Resulting in the ugly
 * formating you see here.
 */



using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Text;

namespace Samsung_Playlist_Creator
{
 /// <summary>
 /// This application allows the user to create and modify playlist files
 /// for Samsung's yp-t8 player (and possibly other Samsung players).
 /// 
 /// </summary>
 public class playlistManager : System.Windows.Forms.Form
 {

  /// Version(build date)
  public const String BUILD_DATE = "5-23-2007";

  private System.Windows.Forms.MainMenu menuBar;
  private System.Windows.Forms.Panel pnlButtons;
  private System.Windows.Forms.Button cmdSave;
  private System.Windows.Forms.Button cmdNew;
  private System.Windows.Forms.MenuItem menuItem6;
  private System.Windows.Forms.MenuItem menuItem14;
  private System.Windows.Forms.MenuItem menuItem18;
  private System.Windows.Forms.Button cmdOpen;
  private System.Windows.Forms.MenuItem menFile;
  private System.Windows.Forms.MenuItem menEdit;
  private System.Windows.Forms.MenuItem menNew;
  private System.Windows.Forms.MenuItem menOpen;
  private System.Windows.Forms.MenuItem menSave;
  private System.Windows.Forms.MenuItem menSaveAs;
  private System.Windows.Forms.MenuItem menExit;
  private System.Windows.Forms.MenuItem menUp;
  private System.Windows.Forms.MenuItem menDown;
  private System.Windows.Forms.MenuItem menAll;
  private System.Windows.Forms.MenuItem menNone;
  private System.Windows.Forms.Button cmdSelectFolder;
  private System.Windows.Forms.TextBox txtCurrentDir;
  private System.Windows.Forms.Panel pnlFileList;
  private System.Windows.Forms.Panel pnlPlaylist;
  private System.Windows.Forms.ListBox fileList;
  private System.Windows.Forms.ListBox playList;
  private System.Windows.Forms.OpenFileDialog openPlaylist;
  private System.Windows.Forms.SaveFileDialog savePlaylist;
  private System.Windows.Forms.FolderBrowserDialog openDirectory;
  private System.Windows.Forms.TextBox txtPlaylistName;
  private System.Windows.Forms.Panel pnlPlaylistButtons;
  private System.Windows.Forms.Button cmdAdd;
  private System.Windows.Forms.Button cmdRemove;
  private System.Windows.Forms.Button cmdUp;
  private System.Windows.Forms.Button cmdDown;
  private System.Windows.Forms.MenuItem menOptions;
  private System.Windows.Forms.MenuItem menFileList;
  private System.Windows.Forms.MenuItem menRecursive;
  private System.Windows.Forms.MenuItem menMp3;
  private System.Windows.Forms.MenuItem menOgg;
  private System.Windows.Forms.MenuItem menWma;
  private System.Windows.Forms.MenuItem menSort;
  private System.Windows.Forms.MenuItem menError;
  private bool playlistChangedSinceSave = false;
  private bool hasBeenSaved = false;
 	private System.Windows.Forms.MenuItem menHelp;
 	private System.Windows.Forms.MenuItem menAbout;
 	private System.Windows.Forms.MenuItem menPlaylist;
 	private System.Windows.Forms.MenuItem menPlaylistSort;
 	private System.Windows.Forms.Timer showSplash;
 	private System.ComponentModel.IContainer components;
	private static string[] passedInArgs; 

  public playlistManager()
  {
   //
   // Required for Windows Form Designer support
   //
   InitializeComponent();
  }

  /// <summary>
  /// Clean up any resources being used.
  /// </summary>
  protected override void Dispose( bool disposing )
  {
   if( disposing )
   {
    if (components != null) 
    {
     components.Dispose();
    }
   }
   base.Dispose( disposing );
  }

  #region	Windows	Form Designer generated	code
		///	<summary>
		///	Required method	for	Designer support - do not modify
		///	the	contents of	this method	with the code editor.
		///	</summary>
		private	void InitializeComponent()
		{
            this.components = new System.ComponentModel.Container();
            this.menuBar = new System.Windows.Forms.MainMenu(this.components);
            this.menFile = new System.Windows.Forms.MenuItem();
            this.menNew = new System.Windows.Forms.MenuItem();
            this.menOpen = new System.Windows.Forms.MenuItem();
            this.menuItem6 = new System.Windows.Forms.MenuItem();
            this.menSave = new System.Windows.Forms.MenuItem();
            this.menSaveAs = new System.Windows.Forms.MenuItem();
            this.menuItem14 = new System.Windows.Forms.MenuItem();
            this.menExit = new System.Windows.Forms.MenuItem();
            this.menEdit = new System.Windows.Forms.MenuItem();
            this.menUp = new System.Windows.Forms.MenuItem();
            this.menDown = new System.Windows.Forms.MenuItem();
            this.menuItem18 = new System.Windows.Forms.MenuItem();
            this.menAll = new System.Windows.Forms.MenuItem();
            this.menNone = new System.Windows.Forms.MenuItem();
            this.menOptions = new System.Windows.Forms.MenuItem();
            this.menFileList = new System.Windows.Forms.MenuItem();
            this.menRecursive = new System.Windows.Forms.MenuItem();
            this.menMp3 = new System.Windows.Forms.MenuItem();
            this.menOgg = new System.Windows.Forms.MenuItem();
            this.menWma = new System.Windows.Forms.MenuItem();
            this.menSort = new System.Windows.Forms.MenuItem();
            this.menPlaylist = new System.Windows.Forms.MenuItem();
            this.menPlaylistSort = new System.Windows.Forms.MenuItem();
            this.menError = new System.Windows.Forms.MenuItem();
            this.menHelp = new System.Windows.Forms.MenuItem();
            this.menAbout = new System.Windows.Forms.MenuItem();
            this.fileList = new System.Windows.Forms.ListBox();
            this.pnlButtons = new System.Windows.Forms.Panel();
            this.cmdNew = new System.Windows.Forms.Button();
            this.cmdOpen = new System.Windows.Forms.Button();
            this.cmdSave = new System.Windows.Forms.Button();
            this.pnlFileList = new System.Windows.Forms.Panel();
            this.txtCurrentDir = new System.Windows.Forms.TextBox();
            this.cmdSelectFolder = new System.Windows.Forms.Button();
            this.pnlPlaylist = new System.Windows.Forms.Panel();
            this.playList = new System.Windows.Forms.ListBox();
            this.txtPlaylistName = new System.Windows.Forms.TextBox();
            this.openPlaylist = new System.Windows.Forms.OpenFileDialog();
            this.savePlaylist = new System.Windows.Forms.SaveFileDialog();
            this.openDirectory = new System.Windows.Forms.FolderBrowserDialog();
            this.pnlPlaylistButtons = new System.Windows.Forms.Panel();
            this.cmdDown = new System.Windows.Forms.Button();
            this.cmdUp = new System.Windows.Forms.Button();
            this.cmdRemove = new System.Windows.Forms.Button();
            this.cmdAdd = new System.Windows.Forms.Button();
            this.showSplash = new System.Windows.Forms.Timer(this.components);
            this.pnlButtons.SuspendLayout();
            this.pnlFileList.SuspendLayout();
            this.pnlPlaylist.SuspendLayout();
            this.pnlPlaylistButtons.SuspendLayout();
            this.SuspendLayout();
            // 
            // menuBar
            // 
            this.menuBar.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menFile,
            this.menEdit,
            this.menOptions,
            this.menHelp});
            // 
            // menFile
            // 
            this.menFile.Index = 0;
            this.menFile.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menNew,
            this.menOpen,
            this.menuItem6,
            this.menSave,
            this.menSaveAs,
            this.menuItem14,
            this.menExit});
            this.menFile.Text = "&File";
            // 
            // menNew
            // 
            this.menNew.Index = 0;
            this.menNew.Text = "&New";
            this.menNew.Click += new System.EventHandler(this.menNew_Click);
            // 
            // menOpen
            // 
            this.menOpen.Index = 1;
            this.menOpen.Text = "&Open";
            this.menOpen.Click += new System.EventHandler(this.menOpen_Click);
            // 
            // menuItem6
            // 
            this.menuItem6.Index = 2;
            this.menuItem6.Text = "-";
            // 
            // menSave
            // 
            this.menSave.Index = 3;
            this.menSave.Text = "&Save";
            this.menSave.Click += new System.EventHandler(this.menSave_Click);
            // 
            // menSaveAs
            // 
            this.menSaveAs.Index = 4;
            this.menSaveAs.Text = "Save &As";
            this.menSaveAs.Click += new System.EventHandler(this.menSaveAs_Click);
            // 
            // menuItem14
            // 
            this.menuItem14.Index = 5;
            this.menuItem14.Text = "-";
            // 
            // menExit
            // 
            this.menExit.Index = 6;
            this.menExit.Text = "E&xit";
            this.menExit.Click += new System.EventHandler(this.menExit_Click);
            // 
            // menEdit
            // 
            this.menEdit.Index = 1;
            this.menEdit.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menUp,
            this.menDown,
            this.menuItem18,
            this.menAll,
            this.menNone});
            this.menEdit.Text = "&Edit";
            // 
            // menUp
            // 
            this.menUp.Index = 0;
            this.menUp.Text = "Move &Up";
            this.menUp.Click += new System.EventHandler(this.menUp_Click);
            // 
            // menDown
            // 
            this.menDown.Index = 1;
            this.menDown.Text = "Move &Down";
            this.menDown.Click += new System.EventHandler(this.menDown_Click);
            // 
            // menuItem18
            // 
            this.menuItem18.Index = 2;
            this.menuItem18.Text = "-";
            // 
            // menAll
            // 
            this.menAll.Index = 3;
            this.menAll.Text = "Select &All";
            this.menAll.Click += new System.EventHandler(this.menAll_Click);
            // 
            // menNone
            // 
            this.menNone.Index = 4;
            this.menNone.Text = "Select &None";
            this.menNone.Click += new System.EventHandler(this.menNone_Click);
            // 
            // menOptions
            // 
            this.menOptions.Index = 2;
            this.menOptions.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menFileList,
            this.menPlaylist,
            this.menError});
            this.menOptions.Text = "Options";
            // 
            // menFileList
            // 
            this.menFileList.Index = 0;
            this.menFileList.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menRecursive,
            this.menMp3,
            this.menOgg,
            this.menWma,
            this.menSort});
            this.menFileList.Text = "File List";
            // 
            // menRecursive
            // 
            this.menRecursive.Checked = global::Samsung_Playlist_Creator.Properties.Settings.Default.RecursivelySearch;
            this.menRecursive.Index = 0;
            this.menRecursive.Text = "Recursively Find Music";
            this.menRecursive.Click += new System.EventHandler(this.menRecursive_Click);
            // 
            // menMp3
            // 
            this.menMp3.Checked = global::Samsung_Playlist_Creator.Properties.Settings.Default.FindMP3;
            this.menMp3.Index = 1;
            this.menMp3.Text = "Find mp3\'s";
            this.menMp3.Click += new System.EventHandler(this.menMp3_Click);
            // 
            // menOgg
            // 
            this.menOgg.Checked = global::Samsung_Playlist_Creator.Properties.Settings.Default.FindOGG;
            this.menOgg.Index = 2;
            this.menOgg.Text = "Find ogg\'s";
            this.menOgg.Click += new System.EventHandler(this.menOgg_Click);
            // 
            // menWma
            // 
            this.menWma.Checked = global::Samsung_Playlist_Creator.Properties.Settings.Default.FindWMA;
            this.menWma.Index = 3;
            this.menWma.Text = "Find wma\'s";
            this.menWma.Click += new System.EventHandler(this.menWma_Click);
            // 
            // menSort
            // 
            this.menSort.Checked = global::Samsung_Playlist_Creator.Properties.Settings.Default.AlphabatizeFileList;
            this.menSort.Index = 4;
            this.menSort.Text = "Alphabatize List";
            this.menSort.Click += new System.EventHandler(this.menSort_Click);
            // 
            // menPlaylist
            // 
            this.menPlaylist.Index = 1;
            this.menPlaylist.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menPlaylistSort});
            this.menPlaylist.Text = "Playlist";
            // 
            // menPlaylistSort
            // 
            this.menPlaylistSort.Checked = global::Samsung_Playlist_Creator.Properties.Settings.Default.AlphabatizePlayList;
            this.menPlaylistSort.Index = 0;
            this.menPlaylistSort.Text = "Alphabatize Playlist";
            this.menPlaylistSort.Click += new System.EventHandler(this.menPlaylistSort_Click);
            // 
            // menError
            // 
            this.menError.Checked = global::Samsung_Playlist_Creator.Properties.Settings.Default.SuppressErrors;
            this.menError.Index = 2;
            this.menError.Text = "Suppress Errors";
            this.menError.Click += new System.EventHandler(this.menError_Click);
            // 
            // menHelp
            // 
            this.menHelp.Index = 3;
            this.menHelp.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
            this.menAbout});
            this.menHelp.Text = "&Help";
            // 
            // menAbout
            // 
            this.menAbout.Index = 0;
            this.menAbout.Text = "&About";
            this.menAbout.Click += new System.EventHandler(this.menAbout_Click);
            // 
            // fileList
            // 
            this.fileList.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                        | System.Windows.Forms.AnchorStyles.Left)
                        | System.Windows.Forms.AnchorStyles.Right)));
            this.fileList.BorderStyle = System.Windows.Forms.BorderStyle.None;
            this.fileList.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.fileList.Location = new System.Drawing.Point(0, 24);
            this.fileList.Name = "fileList";
            this.fileList.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;
            this.fileList.Size = new System.Drawing.Size(216, 455);
            this.fileList.TabIndex = 3;
            // 
            // pnlButtons
            // 
            this.pnlButtons.BackColor = System.Drawing.Color.SteelBlue;
            this.pnlButtons.Controls.Add(this.cmdNew);
            this.pnlButtons.Controls.Add(this.cmdOpen);
            this.pnlButtons.Controls.Add(this.cmdSave);
            this.pnlButtons.Dock = System.Windows.Forms.DockStyle.Bottom;
            this.pnlButtons.Location = new System.Drawing.Point(0, 489);
            this.pnlButtons.Name = "pnlButtons";
            this.pnlButtons.Size = new System.Drawing.Size(592, 48);
            this.pnlButtons.TabIndex = 4;
            // 
            // cmdNew
            // 
            this.cmdNew.Anchor = System.Windows.Forms.AnchorStyles.Top;
            this.cmdNew.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdNew.ForeColor = System.Drawing.Color.Linen;
            this.cmdNew.Location = new System.Drawing.Point(360, 6);
            this.cmdNew.Name = "cmdNew";
            this.cmdNew.Size = new System.Drawing.Size(96, 32);
            this.cmdNew.TabIndex = 2;
            this.cmdNew.Text = "&New";
            this.cmdNew.Click += new System.EventHandler(this.cmdNew_Click);
            // 
            // cmdOpen
            // 
            this.cmdOpen.Anchor = System.Windows.Forms.AnchorStyles.Top;
            this.cmdOpen.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdOpen.ForeColor = System.Drawing.Color.Linen;
            this.cmdOpen.Location = new System.Drawing.Point(248, 6);
            this.cmdOpen.Name = "cmdOpen";
            this.cmdOpen.Size = new System.Drawing.Size(96, 32);
            this.cmdOpen.TabIndex = 1;
            this.cmdOpen.Text = "&Open";
            this.cmdOpen.Click += new System.EventHandler(this.cmdOpen_Click);
            // 
            // cmdSave
            // 
            this.cmdSave.Anchor = System.Windows.Forms.AnchorStyles.Top;
            this.cmdSave.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdSave.ForeColor = System.Drawing.Color.Linen;
            this.cmdSave.Location = new System.Drawing.Point(136, 6);
            this.cmdSave.Name = "cmdSave";
            this.cmdSave.Size = new System.Drawing.Size(96, 32);
            this.cmdSave.TabIndex = 0;
            this.cmdSave.Text = "&Save";
            this.cmdSave.Click += new System.EventHandler(this.cmdSave_Click);
            // 
            // pnlFileList
            // 
            this.pnlFileList.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.pnlFileList.Controls.Add(this.fileList);
            this.pnlFileList.Controls.Add(this.txtCurrentDir);
            this.pnlFileList.Controls.Add(this.cmdSelectFolder);
            this.pnlFileList.Dock = System.Windows.Forms.DockStyle.Right;
            this.pnlFileList.Location = new System.Drawing.Point(376, 0);
            this.pnlFileList.Name = "pnlFileList";
            this.pnlFileList.Size = new System.Drawing.Size(216, 489);
            this.pnlFileList.TabIndex = 5;
            // 
            // txtCurrentDir
            // 
            this.txtCurrentDir.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left)
                        | System.Windows.Forms.AnchorStyles.Right)));
            this.txtCurrentDir.Location = new System.Drawing.Point(0, 0);
            this.txtCurrentDir.Name = "txtCurrentDir";
            this.txtCurrentDir.Size = new System.Drawing.Size(192, 20);
            this.txtCurrentDir.TabIndex = 2;
            this.txtCurrentDir.Text = "No directory has been selected";
            // 
            // cmdSelectFolder
            // 
            this.cmdSelectFolder.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
            this.cmdSelectFolder.Font = new System.Drawing.Font("Arial", 9F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdSelectFolder.Location = new System.Drawing.Point(189, 0);
            this.cmdSelectFolder.Name = "cmdSelectFolder";
            this.cmdSelectFolder.Size = new System.Drawing.Size(23, 20);
            this.cmdSelectFolder.TabIndex = 1;
            this.cmdSelectFolder.Text = "...";
            this.cmdSelectFolder.Click += new System.EventHandler(this.cmdSelectFolder_Click);
            // 
            // pnlPlaylist
            // 
            this.pnlPlaylist.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
            this.pnlPlaylist.Controls.Add(this.playList);
            this.pnlPlaylist.Controls.Add(this.txtPlaylistName);
            this.pnlPlaylist.Dock = System.Windows.Forms.DockStyle.Left;
            this.pnlPlaylist.Location = new System.Drawing.Point(0, 0);
            this.pnlPlaylist.Name = "pnlPlaylist";
            this.pnlPlaylist.Size = new System.Drawing.Size(216, 489);
            this.pnlPlaylist.TabIndex = 6;
            // 
            // playList
            // 
            this.playList.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
                        | System.Windows.Forms.AnchorStyles.Left)
                        | System.Windows.Forms.AnchorStyles.Right)));
            this.playList.BorderStyle = System.Windows.Forms.BorderStyle.None;
            this.playList.Location = new System.Drawing.Point(0, 24);
            this.playList.Name = "playList";
            this.playList.SelectionMode = System.Windows.Forms.SelectionMode.MultiExtended;
            this.playList.Size = new System.Drawing.Size(216, 455);
            this.playList.TabIndex = 1;
            this.playList.SelectedIndexChanged += new System.EventHandler(this.playList_SelectedIndexChanged);
            // 
            // txtPlaylistName
            // 
            this.txtPlaylistName.Dock = System.Windows.Forms.DockStyle.Top;
            this.txtPlaylistName.Location = new System.Drawing.Point(0, 0);
            this.txtPlaylistName.Name = "txtPlaylistName";
            this.txtPlaylistName.ReadOnly = true;
            this.txtPlaylistName.Size = new System.Drawing.Size(212, 20);
            this.txtPlaylistName.TabIndex = 0;
            this.txtPlaylistName.Text = "No name has been set";
            // 
            // openPlaylist
            // 
            this.openPlaylist.Filter = "Samsung\tPlaylist Files|*.spl";
            this.openPlaylist.Title = "Open\tPlaylist File";
            // 
            // savePlaylist
            // 
            this.savePlaylist.Filter = "Samsung\tPlaylist Files|*.spl";
            this.savePlaylist.Title = "Save\tPlaylist";
            // 
            // openDirectory
            // 
            this.openDirectory.Description = "Select Music Directory";
            this.openDirectory.ShowNewFolderButton = false;
            // 
            // pnlPlaylistButtons
            // 
            this.pnlPlaylistButtons.BackColor = System.Drawing.Color.SteelBlue;
            this.pnlPlaylistButtons.Controls.Add(this.cmdDown);
            this.pnlPlaylistButtons.Controls.Add(this.cmdUp);
            this.pnlPlaylistButtons.Controls.Add(this.cmdRemove);
            this.pnlPlaylistButtons.Controls.Add(this.cmdAdd);
            this.pnlPlaylistButtons.Dock = System.Windows.Forms.DockStyle.Fill;
            this.pnlPlaylistButtons.Location = new System.Drawing.Point(216, 0);
            this.pnlPlaylistButtons.Name = "pnlPlaylistButtons";
            this.pnlPlaylistButtons.Size = new System.Drawing.Size(160, 489);
            this.pnlPlaylistButtons.TabIndex = 10;
            // 
            // cmdDown
            // 
            this.cmdDown.Anchor = System.Windows.Forms.AnchorStyles.Top;
            this.cmdDown.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdDown.ForeColor = System.Drawing.Color.Linen;
            this.cmdDown.Location = new System.Drawing.Point(32, 208);
            this.cmdDown.Name = "cmdDown";
            this.cmdDown.Size = new System.Drawing.Size(96, 32);
            this.cmdDown.TabIndex = 5;
            this.cmdDown.Text = "Move &Down";
            this.cmdDown.Click += new System.EventHandler(this.cmdDown_Click);
            // 
            // cmdUp
            // 
            this.cmdUp.Anchor = System.Windows.Forms.AnchorStyles.Top;
            this.cmdUp.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdUp.ForeColor = System.Drawing.Color.Linen;
            this.cmdUp.Location = new System.Drawing.Point(32, 168);
            this.cmdUp.Name = "cmdUp";
            this.cmdUp.Size = new System.Drawing.Size(96, 32);
            this.cmdUp.TabIndex = 4;
            this.cmdUp.Text = "Move &Up";
            this.cmdUp.Click += new System.EventHandler(this.cmdUp_Click);
            // 
            // cmdRemove
            // 
            this.cmdRemove.Anchor = System.Windows.Forms.AnchorStyles.Top;
            this.cmdRemove.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdRemove.ForeColor = System.Drawing.Color.Linen;
            this.cmdRemove.Location = new System.Drawing.Point(32, 128);
            this.cmdRemove.Name = "cmdRemove";
            this.cmdRemove.Size = new System.Drawing.Size(96, 32);
            this.cmdRemove.TabIndex = 3;
            this.cmdRemove.Text = "(X) &Remove";
            this.cmdRemove.Click += new System.EventHandler(this.cmdRemove_Click);
            // 
            // cmdAdd
            // 
            this.cmdAdd.Anchor = System.Windows.Forms.AnchorStyles.Top;
            this.cmdAdd.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
            this.cmdAdd.ForeColor = System.Drawing.Color.Linen;
            this.cmdAdd.Location = new System.Drawing.Point(32, 88);
            this.cmdAdd.Name = "cmdAdd";
            this.cmdAdd.Size = new System.Drawing.Size(96, 32);
            this.cmdAdd.TabIndex = 2;
            this.cmdAdd.Text = "<-- &Add";
            this.cmdAdd.Click += new System.EventHandler(this.cmdAdd_Click);
            // 
            // playlistManager
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(592, 537);
            this.Controls.Add(this.pnlPlaylistButtons);
            this.Controls.Add(this.pnlPlaylist);
            this.Controls.Add(this.pnlFileList);
            this.Controls.Add(this.pnlButtons);
            this.Menu = this.menuBar;
            this.MinimumSize = new System.Drawing.Size(360, 573);
            this.Name = "playlistManager";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "Playlist Manager";
            this.Load += new System.EventHandler(this.playlistManager_Load);
            this.SizeChanged += new System.EventHandler(this.playlistManager_SizeChanged);
            this.Closing += new System.ComponentModel.CancelEventHandler(this.playlistManager_Closing);
            this.FormClosing += new System.Windows.Forms.FormClosingEventHandler(this.playlistManager_FormClosing);
            this.pnlButtons.ResumeLayout(false);
            this.pnlFileList.ResumeLayout(false);
            this.pnlFileList.PerformLayout();
            this.pnlPlaylist.ResumeLayout(false);
            this.pnlPlaylist.PerformLayout();
            this.pnlPlaylistButtons.ResumeLayout(false);
            this.ResumeLayout(false);

		}
		#endregion

  /// <summary>
  /// This application allows the user to create and modify playlist files
  /// for Samsung's yp-t8 player (and possibly other Samsung players).
  /// </summary>
  [STAThread]
  static void Main(string[] args) 
  {
   passedInArgs = args;
   Application.Run(new playlistManager());
  }

  private void cmdSelectFolder_Click(object sender, System.EventArgs e)
  {
   getMusicList();
  }

  private void menOpen_Click(object sender, System.EventArgs e)
  {
	  openPlaylistFromDisk();

  }

  /// <summary>
  /// Adds the supported media files to the fileList from a
  /// directory specified by the user. Directories will be recursivly 
  /// added if menRecursive
  /// is checked.
  /// 
  /// Ogg files will be added if menOgg is checked
  /// Mp3's will be added if menMp3 is checked
  /// Wma's will be added if menWma is checked
  /// </summary>
  private void getMusicList()
  {
	
	this.Cursor = Cursors.WaitCursor;//updateFileList should have taken care of this, but for some reason it doesn't

	  if(Directory.Exists(txtCurrentDir.Text))
			openDirectory.SelectedPath = txtCurrentDir.Text;
   DialogResult results = openDirectory.ShowDialog();

   if (results == DialogResult.OK)
   {
       fileList.BeginUpdate();
    txtCurrentDir.Text = openDirectory.SelectedPath;
	updateFileList();
    fileList.EndUpdate();
   }
	 this.Cursor = Cursors.Arrow;

  }

  /// <summary>
  /// Adds the supported media files to the fileList from a specified
  /// directory. Directories will be recursivly added if menRecursive
  /// is checked.
  /// 
  /// Ogg files will be added if menOgg is checked
  /// Mp3's will be added if menMp3 is checked
  /// Wma's will be added if menWma is checked
  /// </summary>
  /// <param name="directory">Directory to be added</param>
  private void addDirectory(DirectoryInfo directory)
  {

   try
   {

	   //This part seems terribly in efficent however do to the ease of implimentation
	   //it was used. In future versions this code should be considered for replacement

    //If user wants add mp3's to fileList
       if (menMp3.Checked)
     foreach(FileInfo f in directory.GetFiles("*.mp3"))
      fileList.Items.Add(f.Name);

    //If user wants add ogg's to fileList
    if (menOgg.Checked)
     foreach(FileInfo f in directory.GetFiles("*.ogg"))
      fileList.Items.Add(f.Name);

    //If user wants add wma's to fileList
    if (menWma.Checked)
     foreach(FileInfo f in directory.GetFiles("*.wma"))
      fileList.Items.Add(f.Name);

    //Recursivly add directories
    if (menRecursive.Checked)
     foreach(DirectoryInfo d in directory.GetDirectories())
      addDirectory(d);
   }
   catch(System.UnauthorizedAccessException e)
   {
    if(!menError.Checked)//if user wants to see errors
     MessageBox.Show("You do not have enough permissions to view some files in: " + 
      directory.FullName, "Error",MessageBoxButtons.OK, MessageBoxIcon.Error);
   }

	  


  }

  /// <summary>
  /// Gets the path of a playlist file from the user, and then updates the UI accordingly
  /// to reflect the content of the selected playlist file
  /// </summary>
  private void openPlaylistFromDisk()
  {

	  if(playlistChangedSinceSave) //if playlist has been changed, and changes have not been saved
	  {
		  if (!confirmDiscard())
			  return;
	  }

   //Get File from user
   DialogResult results = openPlaylist.ShowDialog();

   if (results == DialogResult.OK)
		openPlaylistFromFile(new FileInfo(openPlaylist.FileName));

  }

	 /// <summary>
	 /// Opens a specified file as if it was a playlist 
	 /// (Does not check to see if it is a playlist or confirm the replacement of an existing playlist)
	 /// 
	 /// Clears playlist
	 /// Adds songs to playlist List
	 /// Sets approitaite variables to relect current state
	 /// </summary>
	 /// <param name="fileToBeOpened">File to be opened</param>
	 private void openPlaylistFromFile(FileInfo fileToBeOpened)
	 {

		 playList.Items.Clear();

		 //Prepare to read from file
		 TextReader file = new StreamReader(fileToBeOpened.OpenRead(), Encoding.Unicode);
		 bool fileIsNotEmpty = true;

		 //First two lines are not relevent so they are thrown out
		 file.ReadLine();
		 file.ReadLine();
   
		 while (fileIsNotEmpty)//while the file is not empty
		 {
			 String s = file.ReadLine();
			 if (s == null)//if file is empty
				 fileIsNotEmpty = false;
			 else
				 playList.Items.Add(s);
		 }
		 file.Close();

		 txtPlaylistName.Text = fileToBeOpened.FullName;
		 savePlaylist.FileName = fileToBeOpened.FullName;
		 openPlaylist.FileName = fileToBeOpened.FullName;
		 playlistChangedSinceSave = false;
		 hasBeenSaved = true;
	 }

	 /// <summary>
	 /// Updates fileList using the last directory that was opened
	 /// 
	 /// If directory no longer exists fileList will not be updated
	 /// </summary>
  private void updateFileList()
  {
   if(Directory.Exists(openDirectory.SelectedPath))
   {
	 this.Cursor = Cursors.WaitCursor;
    //update list
    fileList.Items.Clear();
    addDirectory(new DirectoryInfo(openDirectory.SelectedPath));
	this.Cursor = Cursors.Arrow;
   }
  }

  private void menSaveAs_Click(object sender, System.EventArgs e)
  {
   savePlaylistToDisk(true);
  }

  private void cmdOpen_Click(object sender, System.EventArgs e)
  {
	  openPlaylistFromDisk();
  }

  private void playlistManager_SizeChanged(object sender, System.EventArgs e)
  {
   pnlPlaylist.Width = (this.Width-160)/2;
   pnlFileList.Width = (this.Width-160)/2;
  }

  private void cmdAdd_Click(object sender, System.EventArgs e)
  {
	  foreach(string s in fileList.SelectedItems)
	  {
		  playList.Items.Add(s);
		  playlistChangedSinceSave = true;
	  }
  }

  private void cmdRemove_Click(object sender, System.EventArgs e)
  {
	  while(playList.SelectedIndex != -1)
	  {
		  playList.Items.RemoveAt(playList.SelectedIndex);
		  playlistChangedSinceSave = true;
	  }
  }

  private void menError_Click(object sender, System.EventArgs e)
  {
      if (menError.Checked)
          menError.Checked = false;
   else
          menError.Checked = true;
   
  }

  private void menRecursive_Click(object sender, System.EventArgs e)
  {
   if(menRecursive.Checked)
       menRecursive.Checked = false;
   else
       menRecursive.Checked = true;

   updateFileList();
  }

  private void menMp3_Click(object sender, System.EventArgs e)
  {
      if (menMp3.Checked)
          menMp3.Checked = false;
   else
          menMp3.Checked = true;

   updateFileList();
  }

  private void menOgg_Click(object sender, System.EventArgs e)
  {
      if (menOgg.Checked)
          menOgg.Checked = false;
   else
          menOgg.Checked = true;

   updateFileList();
  }

  private void menWma_Click(object sender, System.EventArgs e)
  {
      if (menWma.Checked)
          menWma.Checked = false;
   else
          menWma.Checked = true;

   updateFileList();
  }

  private void menSort_Click(object sender, System.EventArgs e)
  {
   if (menSort.Checked)
   {
       menSort.Checked = false;
    fileList.Sorted = false;
   }
   else
   {
       menSort.Checked = true;
    fileList.Sorted = true;
   }

   updateFileList();
  }

 	private void menExit_Click(object sender, System.EventArgs e)
	 {
		this.Close();
	 }

 	private void cmdSave_Click(object sender, System.EventArgs e)
	 {
		savePlaylistToDisk(false);
	 }

	 /// <summary>
	 /// Saves playList either using the path the playlist was loaded from or last saved to, or
	 /// prompting the user for a save path.
	 /// 
	 /// The user will be prompted if neither the path the playlist was loaded from or last saved to exist,
	 /// if the playlist has never been saved, or if the saveAs parameter is set to true
	 /// </summary>
	 /// <param name="saveAs">If true behaves as a save as command, false behaves as a normal save command</param>
	 private bool savePlaylistToDisk(bool saveAs)
	 {
		 DialogResult results = DialogResult.OK;
		 if(!File.Exists(savePlaylist.FileName) || !hasBeenSaved || saveAs)//if should behave as a Save As
			results = savePlaylist.ShowDialog();//get file from user
		 else
			 savePlaylist.FileName =  txtPlaylistName.Text;


		 if (results == DialogResult.OK)//If user has, or has previously selected a path
		 {
    
			 txtPlaylistName.Text = savePlaylist.FileName;

			 //Prepare to read from file
			 TextWriter file = new StreamWriter(savePlaylist.OpenFile(), Encoding.Unicode);

			 //First two lines are not relevent so they are thrown out
			 file.WriteLine("PL PLAYLIST");
			 file.WriteLine("VERSION 1.00");
   
			 foreach(String s in playList.Items)//Dump playlist to file
			 {
				file.WriteLine(s);
			 }

			 file.Close();

			 //update attributes to reflect current state
			 playlistChangedSinceSave = false;
			 hasBeenSaved = true;
			 return true;
		 }
		 return false;
	 }

 	private void menSave_Click(object sender, System.EventArgs e)
	 {
		savePlaylistToDisk(false);
	 }

 	private void cmdUp_Click(object sender, System.EventArgs e)
	 {
		moveSelectedUp();
	 }

	 /// <summary>
	 /// Displays a promt asking the user if they want to save current playlist.
	 /// If the user hits yes it calls savePlaylist() and returns true
	 /// If the user hiss no it returns true
	 /// If the user hits cancel it returns false
	 /// </summary>
	 /// <returns>False if the user selects cancel, if the user selects yes or no true is returned</returns>
	 private bool confirmDiscard()
	 {
		 DialogResult results = MessageBox.Show("Do you want to save the changes in the playlist?","Save?",
			MessageBoxButtons.YesNoCancel, MessageBoxIcon.Warning);

		 //If user wants to save before continuing
		 if ( results == DialogResult.Yes)
		 {
			 if (!savePlaylistToDisk(false))
				return confirmDiscard();
		 }

		 //If user does not want to proceed
		 if (results == DialogResult.Cancel)
			 return false;
		 
		 //if cancel was not pressed return true
		 return true;

	 }
	 /// <summary>
	 /// Moves the selected items in playList up one position (If possible)
	 /// </summary>
	 private void moveSelectedUp()
	 {
		 if (playList.Items.Count > 1)//if playlist has more than 1 item
		 foreach (int i in playList.SelectedIndices)
			 if (i > 0 && !playList.SelectedIndices.Contains(i-1))	//if item is selected and can be moved up
			 {
				 playList.Items.Insert(i - 1, playList.Items[i]);
				 playList.Items.RemoveAt(i + 1);
				 playList.SetSelected(i	- 1,true);
				 playlistChangedSinceSave = true;
			 }
	 }

	 /// <summary>
	 /// Moves the selected items in playList down one position (If possible)
	 /// </summary>
	 private void moveSelectedDown()
	 {
		 if (playList.Items.Count > 1)//if playlist has more than 1 item
		 {
			 int[] reverseOrderOfSelected = new int[playList.SelectedIndices.Count];
			 int n = 1;
			 foreach (int i in playList.SelectedIndices)
			 {
				 reverseOrderOfSelected[playList.SelectedIndices.Count - n] = i;
				n++;
			 }
				
			 foreach (int i in reverseOrderOfSelected)
				 if (i < playList.Items.Count -1 && !playList.SelectedIndices.Contains(i+1))	//if item is selected and can be moved down
				 {
					 playList.Items.Insert(i + 2, playList.Items[i]);
					 playList.Items.RemoveAt(i);
					 playList.SetSelected(i	+ 1,true);
					 playlistChangedSinceSave = true;
				 }

		 }
	 }

 	private void menUp_Click(object sender, System.EventArgs e)
	 {
		moveSelectedUp();
	 }

 	private void cmdDown_Click(object sender, System.EventArgs e)
	 {
		moveSelectedDown();
	 }

 	private void menDown_Click(object sender, System.EventArgs e)
	 {
		moveSelectedDown();
	 }

 	private void playList_SelectedIndexChanged(object sender, System.EventArgs e)
	 {
		playlistChangedSinceSave = true;
	 }

 	private void cmdNew_Click(object sender, System.EventArgs e)
	 {
		newPlaylist();
	 }

	 /// <summary>
	 /// Handles the creation of a new playlist, prompting the user if the
	 /// current one has not been saved, updateing class attributes
	 /// and related UI components
	 /// 
	 /// If user confirms new playlist (if old playlist was changed since it was last saved)
	 /// or if last playlist was not changed since it was last saved
	 /// 
	 /// Clears playList items
	 /// sets txtPlaylistName text to "No name has been set"
	 /// sets playlistChangedSinceSave and hasBeenSaved to false
	 /// 
	 /// </summary>
	 private void newPlaylist()
	 {
		 if(playlistChangedSinceSave) //if playlist has been changed, and changes have not been saved
		 {
			 if (!confirmDiscard())
				 return;
		 }

		 //add saved check (create a specialized method to do this as it will be called elsewhere too)
		 playList.Items.Clear();
		 txtPlaylistName.Text = "No name has been set";
		 hasBeenSaved = false;
		 playlistChangedSinceSave = false;
	 }

 	private void menAbout_Click(object sender, System.EventArgs e)
	 {
		showAboutInfo(false);
	 }

	/// <summary>
	 /// Shows licence and copyright info, along with the build date (Version since build dates 
	 /// are being used to distinguish between versions at this point)
	/// </summary>
	/// <param name="autoClose">Whether about dialog should close on its own after a short period of time</param>
	 private void showAboutInfo(bool autoClose)
	 {
		 //Show Splash Screen
		 SplashScreen splash =  new SplashScreen(autoClose);
		 splash.Show();
	 }

 	private void playlistManager_Load(object sender, System.EventArgs e)
	 {

		//Ensures that menus are in sync with actual values
		menPlaylistSort.Checked = playList.Sorted;
		menSort.Checked = fileList.Sorted;
		showAboutInfo(true);

		//Open passed in playlist
		foreach (String s in passedInArgs)
		{
			if (File.Exists(s))
			{
				try
				{
					openPlaylistFromFile(new FileInfo(s));
					break;
				}
				catch
				{
					playList.Items.Clear();
					playlistChangedSinceSave = false;
					hasBeenSaved = false;
				}
			}
		}

	 }

 	private void menAll_Click(object sender, System.EventArgs e)
	 {
         fileList.BeginUpdate();
		//This method needs to be fixed so as to select all as fast as select none works

		//For each item in fileList
		for(int i =0; i < fileList.Items.Count; i++)
			fileList.SetSelected(i, true);

        fileList.EndUpdate();

        playList.BeginUpdate();
		//For each item in playList
		for(int i =0; i < playList.Items.Count; i++)
			playList.SetSelected(i, true);
        playList.EndUpdate();
	 }

 	private void menNone_Click(object sender, System.EventArgs e)
	 {
		playList.ClearSelected();
		fileList.ClearSelected();
	 
	 }

 	private void menPlaylistSort_Click(object sender, System.EventArgs e)
	 {
         if (menPlaylistSort.Checked)
		{
            menPlaylistSort.Checked = false;
			playList.Sorted = false;
		}
		else
		{
            menPlaylistSort.Checked = true;
			playList.Sorted = true;
		}
	 }

 	private void menNew_Click(object sender, System.EventArgs e)
	 {
		newPlaylist();
	 }

 	private void playlistManager_Closing(object sender, System.ComponentModel.CancelEventArgs e)
	 {
		if(playlistChangedSinceSave) //if playlist has been changed, and changes have not been saved
			if (!confirmDiscard())
				e.Cancel = true;

	 }

    private void playlistManager_FormClosing(object sender, FormClosingEventArgs e)
    {
        Properties.Settings.Default.Save();
    }
 }
}