Automatic Zip Extractor

using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Windows;
using System.Windows.Threading;
using System.Threading;

namespace AutoExtractor
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : Application
    {
        private MainWindow window;        

        public App()
        {
        }

        public App(KeyboardHook hook)
        {
            if (hook == null)
                throw new ArgumentNullException("hook");
            hook.KeyCombinationPressed += new EventHandler(hook_KeyCombinationPressed);
        }

        protected override void OnStartup(StartupEventArgs e)
        {
            base.OnStartup(e);
            window = new MainWindow();
            if (AutoExtractor.Properties.Settings.Default.StartMinimizedToTray)
                window.MinimizeToTray();
            else
                window.Show();
        }

        void hook_KeyCombinationPressed(object sender, EventArgs e)
        {
            Dispatcher.Invoke(DispatcherPriority.Normal, new ThreadStart(ShowMainWindow));
        }

        private void ShowMainWindow()
        {
            if (window.Visibility != Visibility.Visible)
            {
                WindowVisibilityHelper.ActivateWindow(window);
                window.ChangedFileControl.Focus();
            }
            else
                window.MinimizeToTray();
        }
    }
}