StreamSelectDialog.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace JarrettVance.ChapterTools
{
    public partial class StreamSelectDialog : Form
    {
        private static readonly TimeSpan TWENTY = TimeSpan.FromMinutes(20);
        private readonly List<ChapterInfo> extracted;

        public StreamSelectDialog(ChapterExtractor extractor)
        {
            InitializeComponent();
            this.MinimumSize = new Size(700, 400);
            extracted = new List<ChapterInfo>();

            extractor.StreamDetected += (sender, arg) =>
              {
                  extracted.Add(arg.ProgramChain);
                  if (!Hidden(arg.ProgramChain)) listBox1.Items.Add(arg.ProgramChain);
              };
            extractor.ChaptersLoaded += (sender, arg) =>
              {
                  for (int i = 0; i < listBox1.Items.Count; i++)
                  {
                      if (((ChapterInfo)listBox1.Items[i]).SourceName == arg.ProgramChain.SourceName)
                      {
                          listBox1.Items[i] = arg.ProgramChain;
                          break;
                      }
                  }
              };
            extractor.ExtractionComplete += (sender, arg) =>
            {
                Reload();
            };
        }

        private bool Hidden(ChapterInfo pgc)
        {
            if (checkBoxLessThan20mins.Checked && pgc.Duration < TWENTY) return true;
            if (checkBoxLessThan5.Checked && pgc.Chapters.Count < 5) return true;
            if (checkBoxGreaterThan50.Checked && pgc.Chapters.Count > 50) return true;
            return false;
        }

        private void Reload()
        {
            ChapterInfo[] show = extracted
                .Where(x => !Hidden(x))
                .OrderByDescending(x => x.Duration)
                .ToArray();
            int hidden = extracted.Count - show.Length;
            lblCounts.Text = string.Format("{0} shown {1} hidden", show.Length, hidden);
            listBox1.Items.Clear();
            listBox1.Items.AddRange(show);

            if (extracted.Count > 0)
            {
                var vol = extracted.First().VolumeName;
                if (!string.IsNullOrEmpty(vol))
                {
                    this.Text = "Select Stream from " + vol;
                    listBox1.SelectedIndex = 0;
                }
            }
        }

        public ChapterInfo ProgramChain
        {
            get { return listBox1.SelectedItems.Count > 0 ? listBox1.SelectedItem as ChapterInfo : null; }
        }

        private void btnOK_Click(object sender, EventArgs e)
        {
            if (listBox1.SelectedItems.Count == 1)
                DialogResult = DialogResult.OK;
            else
                MessageBox.Show("Please select a stream.");
        }

        private void checkBox_CheckedChanged(object sender, EventArgs e)
        {
            Reload();
        }
    }
}