using System;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using mRemoteNG.App;

namespace mRemoteNG.Tools
{
	public class WindowPlacement
	{
		private Form _form;
		

		public WindowPlacement(Form form)
		{
			_form = form;
		}
		

        #region Public Properties
        public Form Form
		{
			get
			{
				return _form;
			}
			set
			{
				_form = value;
			}
		}
			
        public bool RestoreToMaximized
		{
			get
			{
				NativeMethods.WINDOWPLACEMENT windowPlacement = GetWindowPlacement();
				return Convert.ToBoolean(windowPlacement.flags & NativeMethods.WPF_RESTORETOMAXIMIZED);
			}
			set
			{
                NativeMethods.WINDOWPLACEMENT windowPlacement = GetWindowPlacement();
				if (value)
				{
					windowPlacement.flags = windowPlacement.flags | NativeMethods.WPF_RESTORETOMAXIMIZED;
				}
				else
				{
					windowPlacement.flags = windowPlacement.flags & ~NativeMethods.WPF_RESTORETOMAXIMIZED;
				}
				SetWindowPlacement(windowPlacement);
			}
		}
        #endregion
			
        #region Private Functions
		private NativeMethods.WINDOWPLACEMENT GetWindowPlacement()
		{
			if (_form == null)
			{
				throw (new NullReferenceException("WindowPlacement.Form is not set."));
			}
            NativeMethods.WINDOWPLACEMENT windowPlacement = new NativeMethods.WINDOWPLACEMENT();
			windowPlacement.length = (uint)Marshal.SizeOf(windowPlacement);
			try
			{
                NativeMethods.GetWindowPlacement(_form.Handle, ref windowPlacement);
				return windowPlacement;
			}
			catch (Exception)
			{
				throw;
			}
		}
			
		private bool SetWindowPlacement(NativeMethods.WINDOWPLACEMENT windowPlacement)
		{
			if (_form == null)
			{
				throw (new NullReferenceException("WindowPlacement.Form is not set."));
			}
			windowPlacement.length = (uint)Marshal.SizeOf(windowPlacement);
			try
			{
				return NativeMethods.SetWindowPlacement(_form.Handle, ref windowPlacement);
			}
			catch (Exception)
			{
				throw;
			}
		}
        #endregion
	}
}