Audio Book Player

using System;

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

namespace abPlayer
{
    public partial class frmProps : Form
    {
        public bool Dirty = false;
        private frmLibrary Library = null;
        private cPlayer Player = null;
        private cASUS639DeviceSpecifics DeviceSpecifics = null;
        public frmMediaProps MediaProps = null;

        public frmProps(frmLibrary lib, cPlayer ply, cASUS639DeviceSpecifics dvc)
        {
            InitializeComponent();

            Library = lib;
            Player = ply;
            DeviceSpecifics = dvc;
            MediaProps = new frmMediaProps();
        }

        public new DialogResult ShowDialog()
        {
            try
            {
                // set current timeline value
                hscTime.Maximum = Player.Duration + hscTime.LargeChange - 1;
                hscTime.Value = Player.Location;
                // set playlist index
                hscEntry.Maximum = Player.PlaylistCount + hscEntry.LargeChange - 1;
                hscEntry.Value = Player.PlayingIndex + 1;
                // set shuffle flag
                chkShuffle.Checked = Player.Shuffle;
                // reflect values in associated text boxes
                edtTime.Text = Player.TimeToString(hscTime.Value);
                edtEntry.Text = hscEntry.Value.ToString();
                lblName.Text = new FileInfo(Player.PlaylistFile(hscEntry.Value - 1)).Name;
                hscVol.Value = DeviceSpecifics.Volume;
                edtVol.Text = hscVol.Value.ToString();
                if (Player.TotalDuration == 0)
                {
                    edtTotals.Text = edtRemain.Text = "";
                }
                else
                {
                    edtTotals.Text = Player.TotalDurationSoFarString +
                        " / " + Player.TotalDurationString;
                    edtRemain.Text = "(" + Player.TotalDurationRemainString +")";
                }
                Dirty = false;
                return base.ShowDialog();
            }
            catch
            {
                return DialogResult.Cancel;
            }
        }

        private void picCancel_Click(object sender, EventArgs e)
        {
            Library.FileSelector.FlashControl((Control)sender);
            DialogResult = DialogResult.Cancel;
        }

        private void picOK_Click(object sender, EventArgs e)
        {
            Library.FileSelector.FlashControl((Control)sender);
            DialogResult = DialogResult.OK;
        }
        // timestamp changed - reflect value in text box and 
        // flag so it will be commited and carried out
        private void hscTime_ValueChanged(object sender, EventArgs e)
        {
            edtTime.Text = Player.TimeToString(hscTime.Value);
            Dirty = true;
        }
        // playlist file index changed
        private void hscEntry_ValueChanged(object sender, EventArgs e)
        {
            edtEntry.Text = hscEntry.Value.ToString();
            Dirty = true;
            // if this is not the active media - we don't know the file duration
            // so we prevent the user from modifying it
            if (hscEntry.Value != (Library.BookStore.GetBookProperty(eBookProperty.BOOKMARK_ENTRY, "") + 1))
            {
                int d = Player.FileDuration(hscEntry.Value - 1);
                hscTime.Value = 0;
                if (d == -1)
                    hscTime.Maximum = 0;
                else
                    hscTime.Maximum = d + hscTime.LargeChange - 1;
            }
            else
            {
                hscTime.Maximum = Player.Duration + hscTime.LargeChange - 1;
                hscTime.Value = Player.Location;
            }
            edtTime.Text = Player.TimeToString(hscTime.Value);
            try { lblName.Text = new FileInfo(Player.PlaylistFile(hscEntry.Value - 1)).Name; }
            catch { lblName.Text = ""; }
        }
        // delete a playlist entry, optionally remove also
        // from actual storage
        private void picRemove_Click(object sender, EventArgs e)
        {
            Library.FileSelector.FlashControl((Control)sender);
            if (Player.PlaylistCount < 2) return;
            int oldEntry = hscEntry.Value - 1;
            String file = Player.PlaylistFile(oldEntry);
            DialogResult rslt = MessageBox.Show("Delete File From Storage: " + file,
                "Remove Item", MessageBoxButtons.YesNoCancel,
                MessageBoxIcon.Exclamation, MessageBoxDefaultButton.Button3);
            if (rslt == DialogResult.Cancel) return;
            Player.Stop();
            hscEntry.Maximum -= 1;
            hscEntry.Value = Player.RemoveAt(oldEntry) + 1;
            edtEntry.Text = hscEntry.Value.ToString();
            Library.BookStore.DeleteBookFile(oldEntry, "");
            Dirty = true;
            hscTime.Maximum = 0;
            hscTime.Value = 0;
            edtTime.Text = Player.TimeToString(hscTime.Value);
            lblName.Text = new FileInfo(Player.PlaylistFile(hscEntry.Value - 1)).Name;
            if (rslt == DialogResult.Yes)
            {
                try
                {
                    File.Delete(file);
                }
                catch (Exception ex)
                {
                    MessageBox.Show("File System Error : " + ex.Message);
                }
            }
        }
        // volume level changed - show value in associated text box, apply to
        // player and commit to persistant storage
        private void hscVol_ValueChanged(object sender, EventArgs e)
        {
            Dirty = true;
            edtVol.Text = hscVol.Value.ToString();
        }

        private void chkShuffle_CheckStateChanged(object sender, EventArgs e)
        {
            Dirty = true;
        }

        private void picMediaProps_Click(object sender, EventArgs e)
        {
            Library.FileSelector.FlashControl((Control)sender);
            MediaProps.ShowDialog(Player.PlaylistFile(hscEntry.Value - 1));
        }
    }
}