using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using NEROLib;

namespace NeroFiddlesCOM.NET
{
	/// <summary>
	/// Summary description for ChooseSession.
	/// </summary>
	public class ChooseSessionForm : System.Windows.Forms.Form
	{
		private NeroDrive m_drive;

		private _INeroDriveEvents_OnDoneCDInfoEventHandler m_evOnDoneCDInfo;
		private ControlEnabler m_controlEnabler;

		private System.Windows.Forms.Button c_OK;
		private System.Windows.Forms.Button c_Cancel;
		private System.Windows.Forms.Label label5;
		private System.Windows.Forms.ListView c_PreviousVMS;
		private System.Windows.Forms.ColumnHeader columnHeader4;
		private System.Windows.Forms.ColumnHeader columnHeader2;
		private System.Windows.Forms.ListView c_PreviousSessions;
		private System.Windows.Forms.ColumnHeader columnHeader3;
		private System.Windows.Forms.ColumnHeader columnHeader1;
		private System.Windows.Forms.Button c_Refresh;
		private System.Windows.Forms.Label label6;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public ChooseSessionForm(NeroDrive drive)
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			m_drive = drive;
			m_controlEnabler = new ControlEnabler (this);
		}

		/// <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.c_OK = new System.Windows.Forms.Button();
			this.c_Cancel = new System.Windows.Forms.Button();
			this.label5 = new System.Windows.Forms.Label();
			this.c_PreviousVMS = new System.Windows.Forms.ListView();
			this.columnHeader4 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader2 = new System.Windows.Forms.ColumnHeader();
			this.c_PreviousSessions = new System.Windows.Forms.ListView();
			this.columnHeader3 = new System.Windows.Forms.ColumnHeader();
			this.columnHeader1 = new System.Windows.Forms.ColumnHeader();
			this.c_Refresh = new System.Windows.Forms.Button();
			this.label6 = new System.Windows.Forms.Label();
			this.SuspendLayout();
			// 
			// c_OK
			// 
			this.c_OK.DialogResult = System.Windows.Forms.DialogResult.OK;
			this.c_OK.Location = new System.Drawing.Point(224, 24);
			this.c_OK.Name = "c_OK";
			this.c_OK.TabIndex = 5;
			this.c_OK.Text = "OK";
			// 
			// c_Cancel
			// 
			this.c_Cancel.DialogResult = System.Windows.Forms.DialogResult.Cancel;
			this.c_Cancel.Location = new System.Drawing.Point(224, 56);
			this.c_Cancel.Name = "c_Cancel";
			this.c_Cancel.TabIndex = 6;
			this.c_Cancel.Text = "Cancel";
			// 
			// label5
			// 
			this.label5.Location = new System.Drawing.Point(8, 8);
			this.label5.Name = "label5";
			this.label5.Size = new System.Drawing.Size(100, 16);
			this.label5.TabIndex = 0;
			this.label5.Text = "Previous sessions:";
			// 
			// c_PreviousVMS
			// 
			this.c_PreviousVMS.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
																							this.columnHeader4,
																							this.columnHeader2});
			this.c_PreviousVMS.Enabled = false;
			this.c_PreviousVMS.FullRowSelect = true;
			this.c_PreviousVMS.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
			this.c_PreviousVMS.HideSelection = false;
			this.c_PreviousVMS.Location = new System.Drawing.Point(8, 160);
			this.c_PreviousVMS.MultiSelect = false;
			this.c_PreviousVMS.Name = "c_PreviousVMS";
			this.c_PreviousVMS.Size = new System.Drawing.Size(208, 112);
			this.c_PreviousVMS.TabIndex = 3;
			this.c_PreviousVMS.View = System.Windows.Forms.View.Details;
			// 
			// columnHeader4
			// 
			this.columnHeader4.Text = "T#";
			this.columnHeader4.Width = 33;
			// 
			// columnHeader2
			// 
			this.columnHeader2.Text = "Session Name";
			this.columnHeader2.Width = 152;
			// 
			// c_PreviousSessions
			// 
			this.c_PreviousSessions.Columns.AddRange(new System.Windows.Forms.ColumnHeader[] {
																								 this.columnHeader3,
																								 this.columnHeader1});
			this.c_PreviousSessions.Enabled = false;
			this.c_PreviousSessions.FullRowSelect = true;
			this.c_PreviousSessions.HeaderStyle = System.Windows.Forms.ColumnHeaderStyle.Nonclickable;
			this.c_PreviousSessions.HideSelection = false;
			this.c_PreviousSessions.Location = new System.Drawing.Point(8, 24);
			this.c_PreviousSessions.MultiSelect = false;
			this.c_PreviousSessions.Name = "c_PreviousSessions";
			this.c_PreviousSessions.Size = new System.Drawing.Size(208, 112);
			this.c_PreviousSessions.TabIndex = 1;
			this.c_PreviousSessions.View = System.Windows.Forms.View.Details;
			// 
			// columnHeader3
			// 
			this.columnHeader3.Text = "Session number";
			this.columnHeader3.Width = 97;
			// 
			// columnHeader1
			// 
			this.columnHeader1.Text = "Track number";
			this.columnHeader1.Width = 85;
			// 
			// c_Refresh
			// 
			this.c_Refresh.Location = new System.Drawing.Point(224, 112);
			this.c_Refresh.Name = "c_Refresh";
			this.c_Refresh.TabIndex = 4;
			this.c_Refresh.Text = "Refresh";
			this.c_Refresh.Click += new System.EventHandler(this.c_Refresh_Click);
			// 
			// label6
			// 
			this.label6.Location = new System.Drawing.Point(8, 144);
			this.label6.Name = "label6";
			this.label6.Size = new System.Drawing.Size(100, 16);
			this.label6.TabIndex = 2;
			this.label6.Text = "Previous VMS:";
			// 
			// ChooseSessionForm
			// 
			this.AcceptButton = this.c_OK;
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.CancelButton = this.c_Cancel;
			this.ClientSize = new System.Drawing.Size(306, 280);
			this.Controls.Add(this.label5);
			this.Controls.Add(this.c_PreviousVMS);
			this.Controls.Add(this.c_PreviousSessions);
			this.Controls.Add(this.c_Refresh);
			this.Controls.Add(this.label6);
			this.Controls.Add(this.c_OK);
			this.Controls.Add(this.c_Cancel);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
			this.MaximizeBox = false;
			this.MinimizeBox = false;
			this.Name = "ChooseSessionForm";
			this.ShowInTaskbar = false;
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
			this.Text = "ChooseSession";
			this.ResumeLayout(false);

		}
		#endregion

		protected override void OnLoad(EventArgs e)
		{
			base.OnLoad (e);

			// On load, display the sessions.
			// 
			RefreshSessions ();
		}

		private void RefreshSessions()
		{
			// Subscribe to the OnDoneCDInfo event.
			// 
			m_evOnDoneCDInfo = new _INeroDriveEvents_OnDoneCDInfoEventHandler(m_drive_OnDoneCDInfo);
			m_drive.OnDoneCDInfo += m_evOnDoneCDInfo;

			// We could do a this.Enabled=false here but then the wait
			// cursor will always be the arrow.
			// 
			m_controlEnabler.EnableAllControls (false);
			this.Cursor = Cursors.WaitCursor;

			// When everything is setup, do the disc info.
			// 
			m_drive.CDInfo (0);
		}

		private void c_Refresh_Click(object sender, System.EventArgs e)
		{
			// Refresh everything on request...
			// 
			RefreshSessions ();
		}

		private void m_drive_OnDoneCDInfo(INeroCDInfo pCDInfo)
		{
			// When the disc info event fires, we should return
			// to the previous state of all controls, restore the
			// cursor and unsubscribe from the event.
			// 
			m_controlEnabler.EnableAllControls (true);
			m_drive.OnDoneCDInfo -= m_evOnDoneCDInfo;

			c_PreviousSessions.Items.Clear ();
			c_PreviousVMS.Items.Clear ();

			NeroCDInfo cdinfo = (NeroCDInfo) pCDInfo;

			if (cdinfo != null)
			{
				// If we got a disc information, let's add all the data
				// tracks to the list view.
				// 
				int iTrackCount = 0;
				foreach (NeroTrack trk in cdinfo.Tracks)
				{
					if (trk.TrackType == NERO_TRACK_TYPE.NERO_TT_DATA)
					{
						iTrackCount ++;

						ListViewItem lvi = c_PreviousSessions.Items.Add (trk.SessionNumber.ToString ());
						lvi.SubItems.Add (trk.TrackNumber.ToString ());
					}
				}

				int iVMSCount = 0;
				bool bVMS = 0 != (cdinfo.MediumFlags & NERO_MEDIUM_FLAGS.NCDIMF_VIRTUALMULTISESSION);

				// If there is VMS info, display that as well.
				// 
				if (bVMS)
				{
					NeroVMSInfo vmsInfo = m_drive.GetVMSInfo ();
					if (vmsInfo != null)
					{
						iVMSCount = vmsInfo.Count;

						int i = 1;
						foreach (NeroVMSSession vmsSession in vmsInfo)
						{
							ListViewItem lvi = c_PreviousVMS.Items.Add (i.ToString ());
							lvi.SubItems.Add (vmsSession.SessionName);
							i++;
						}
					}
				}

				c_PreviousSessions.Enabled = !bVMS && iTrackCount > 0;
				c_PreviousVMS.Enabled = bVMS && iVMSCount > 0;
			}
			else
			{
				c_PreviousSessions.Enabled = false;
				c_PreviousVMS.Enabled = false;
			}

			this.Cursor = Cursors.Default;
		}

		// This is a public function for the outside world to
		// find out which is the selected previous session,
		// if any. It is required that NERO_IMPORT_ISO_TRACK_FLAGS
		// variable is passed by reference so that it is modified
		// if needed.
		// 
		public int GetTrackNumber (ref NERO_IMPORT_ISO_TRACK_FLAGS importFlags)
		{
			int iTrackNumber = -1;

			if (c_PreviousSessions.Enabled && c_PreviousSessions.SelectedIndices.Count > 0)
			{
				iTrackNumber = Convert.ToInt32 (c_PreviousSessions.SelectedItems[0].SubItems[0].Text);
			}
			else if (c_PreviousVMS.Enabled && c_PreviousVMS.SelectedIndices.Count > 0)
			{
				iTrackNumber = Convert.ToInt32 (c_PreviousVMS.SelectedItems[0].Text);
				importFlags = (NERO_IMPORT_ISO_TRACK_FLAGS) ((uint)importFlags + (uint)NERO_IMPORT_ISO_TRACK_FLAGS.NERO_IMPORT_VMS_SESSION);
			}

			return iTrackNumber;
		}

		// This is a ToString override that returns the description of
		// the currently selected session.
		// 
		public new string ToString ()
		{
			NERO_IMPORT_ISO_TRACK_FLAGS importFlags = 0;
			int iTrackNumber = GetTrackNumber (ref importFlags);

			if (iTrackNumber != -1)
			{
				return iTrackNumber.ToString () + (0 != (importFlags & NERO_IMPORT_ISO_TRACK_FLAGS.NERO_IMPORT_VMS_SESSION)? " (VMS)" : "");
			}
			else
			{
				return "<none>";
			}
		}
	}
}