SelectAudioFileController.cs :  » Build-Systems » CruiseControl.NET » ThoughtWorks » CruiseControl » CCTrayLib » Presentation » C# / CSharp Open Source

using System;
using System.IO;
using System.Windows.Forms;

namespace ThoughtWorks.CruiseControl.CCTrayLib.Presentation{
  public class SelectAudioFileController
  {
    private TextBox entryBox;
    private readonly Button browseButton;
    private readonly Button playButton;
    private OpenFileDialog openFileDialog;
    private CheckBox enabledCheckBox;

    public SelectAudioFileController(
      CheckBox enabledCheckBox,
      TextBox entryBox,
      Button browseButton,
      Button playButton,
      OpenFileDialog openFileDialog,
      string initialValue)
    {
      this.entryBox = entryBox;
      this.browseButton = browseButton;
      this.playButton = playButton;
      this.openFileDialog = openFileDialog;
      this.enabledCheckBox = enabledCheckBox;

      entryBox.Text = initialValue;
      enabledCheckBox.Checked = entryBox.Text.Length > 0;

      browseButton.Click += new EventHandler(BrowseButton_Click);
      playButton.Click += new EventHandler(PlayButton_Click);
      enabledCheckBox.CheckedChanged += new EventHandler(Enabled_Changed);

      UpdateEnabledState(enabledCheckBox.Checked);
    }

    private void BrowseButton_Click(object sender, EventArgs e)
    {
      FindAudioFile(entryBox);
    }

    private void FindAudioFile(TextBox textBox)
    {
      if (openFileDialog.ShowDialog() != DialogResult.OK)
        return;

      string fileName = openFileDialog.FileName;

      // make relative path
      if (fileName.StartsWith(AppDomain.CurrentDomain.BaseDirectory))
        fileName = fileName.Substring(AppDomain.CurrentDomain.BaseDirectory.Length);

      textBox.Text = fileName;
    }

    private void PlayButton_Click(object sender, EventArgs e)
    {
      PlayAudioFile(entryBox.Text);
    }

    private void PlayAudioFile(string fileName)
    {
      if (fileName == null || fileName.Trim().Length == 0)
        return;

      if (!File.Exists(fileName))
      {
        MessageBox.Show("The specified audio file was not found.", "File not found", MessageBoxButtons.OK, MessageBoxIcon.Error);
        return;
      }

      Audio.PlaySound(fileName, false, true);
    }

    private void Enabled_Changed(object sender, EventArgs e)
    {
      UpdateEnabledState(enabledCheckBox.Checked);
    }

    private void UpdateEnabledState(bool enabled)
    {
      entryBox.Enabled = browseButton.Enabled = playButton.Enabled = enabled;
    }

    public string Value
    {
      get
      {
        if (!enabledCheckBox.Checked)
          return null;

        return entryBox.Text;
      }
    }
  }
}