using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows;
using System.Windows.Markup;
using System.IO;
using BuzzGUI.Interfaces;
using BuzzGUI.Common;
using System.Windows.Interop;
using System.Windows.Input;
using System.Runtime.InteropServices;


namespace BuzzGUI.ParameterWindow
{
	public class ParameterWindowController
	{
		Window window;

		public Window Window { get { return window; } }

		public ParameterWindowController(IMachine machine, IntPtr parenthwnd, int x, int y, string xamlpath)
		{
			if (!Load(xamlpath)) return;

			var vm = new ParameterWindowVM() { Machine = machine };
			window.DataContext = vm;

			if (x >= 0 && y >= 0)
			{
				window.WindowStartupLocation = WindowStartupLocation.Manual;
				window.Left = x - 200;
				window.Top = y - 30;
			}

			new WindowInteropHelper(window) { Owner = parenthwnd };

		}

		bool Load(string path)
		{
			try
			{
				window = (Window)BuzzGUI.Common.XamlReaderEx.LoadHack(path);
				window.Closing += window_Closing;
				window.PreviewKeyDown += window_PreviewKeyDown;
				window.MaxHeight = SystemParameters.FullPrimaryScreenHeight;
				return true;
			}
			catch (Exception e)
			{
				MessageBox.Show(e.Message, path);
				return false;
			}

		}

		public void Close()
		{
			var vm = (ParameterWindowVM)window.DataContext;
			vm.Machine = null;
			vm.Release();
			window.DataContext = null;
			window.Closing -= window_Closing;
			window.PreviewKeyDown -= window_PreviewKeyDown;
			window.Close();
		}

		public void Show(bool show)
		{
			if (window == null) return;

			if (show)
			{
				window.Show();
				window.BringToTop();
			}
			else
			{
				window.Hide();
			}
		}


		void window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
		{
			window.Hide();
			e.Cancel = true;

		}

		void window_PreviewKeyDown(object sender, System.Windows.Input.KeyEventArgs e)
		{
			if (e.Key == Key.Escape && Keyboard.Modifiers == ModifierKeys.None)
			{
				e.Handled = true;
				window.Hide();
			}

		}

	}
}