using System;
using System.Threading;
using System.Collections;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Windows.Forms;
using mshtml;
using Microsoft.Win32;

namespace HB.Stuff
{
	/// <summary>
	/// Summary description for RegistryPrinter.
	/// </summary>
	public class RegistryPrinter
	{
		/// <summary>
		/// Creates a new instance of a <see cref="RegistryPrinter"/>.
		/// </summary>
		/// <param name="name">The name of the printer.</param>
		/// <param name="value">The registry value of the printer.</param>
		internal RegistryPrinter(string name, string value)
		{
			this.name = name;
			this.value = value;
		}

		public static RegistryPrinter[] InstalledPrinters
		{
			get
			{
				string subkey = @"Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts";
				RegistryKey key = Registry.CurrentUser.OpenSubKey(subkey, false);
				string[] printerNames = key.GetValueNames();
				RegistryPrinter[] printers = new RegistryPrinter[printerNames.Length];
				for(int i=0; i < printerNames.Length; i++)
					printers[i] = new RegistryPrinter(printerNames[i], (string) key.GetValue(printerNames[i]));
				key.Close();
				return printers;
			}
		}

		/// <summary>
		/// Gets the name of the printer.
		/// </summary>
		public string Name
		{
			get
			{
				return name;
			}
			set
			{
				string subkey = @"Software\Microsoft\Windows NT\CurrentVersion\PrinterPorts";
				RegistryKey key = Registry.CurrentUser.OpenSubKey(subkey, false);
				key.SetValue(value, Value);
				key.DeleteValue(name);
				name = value;
				key.Close();
			}
		}

		/// <summary>
		/// Gets the registry value of the printer.
		/// </summary>
		public string Value
		{
			get
			{
				return value;
			}
		}

		/// <summary>
		/// Set this printer as the default printer for the <see cref="Registry.CurrentUser"/>.
		/// </summary>
		public void SetAsDefaultPrinter()
		{
			Hashtable printers = new Hashtable();
			string subkey = @"Software\Microsoft\Windows NT\CurrentVersion\Windows";
			RegistryKey key = Registry.CurrentUser.OpenSubKey(subkey, true);
			string[] subvalues = value.Split(',');
			key.SetValue("Device", name + "," + subvalues[0] + "," + subvalues[1]);
			key.Close();
		}

		public static RegistryPrinter GetDefaultPrinter()
		{
			string subkey = @"Software\Microsoft\Windows NT\CurrentVersion\Windows";
			RegistryKey key = Registry.CurrentUser.OpenSubKey(subkey, false);
			string defaultPrinter = ((string) key.GetValue("Device")).Split(',')[0];
			key.Close();
			foreach(RegistryPrinter printer in InstalledPrinters)
				if(printer.Name == defaultPrinter)
					return printer;
			return null;
		}

		private string name;
		private string value;
	}

}