using System;
using System.Windows;
using System.Runtime.InteropServices;
using System.Windows.Interop;

namespace DTS.Common.Dialogs
{
    /// <summary>
    /// Interaction logic for ConfirmationWindow.xaml
    /// </summary>
    public partial class ConfirmationWindow
    {
        /// <summary>
        /// The content template to use when showing <see cref="Microsoft.Practices.Prism.Interactivity.InteractionRequest.Confirmation"/> data.
        /// </summary>
        public static readonly DependencyProperty ConfirmationTemplateProperty =
            DependencyProperty.Register(
                "ConfirmationTemplate",
                typeof (DataTemplate),
                typeof (ConfirmationWindow),
                new PropertyMetadata(null));

        /// <summary>
        /// Creates a new instance of ConfirmationChildWindow.
        /// </summary>
        public ConfirmationWindow()
        {
            // Hook the SourceInitialized event and then using the SetWindowLong function to strip off the WS_SYSMENU bit. 
            SourceInitialized += ConfirmationWindow_SourceInitialized;
            InitializeComponent();
        }

        /// <summary>
        /// The content template to use when showing <see cref="Microsoft.Practices.Prism.Interactivity.InteractionRequest.Confirmation"/> data.
        /// </summary>
        public DataTemplate ConfirmationTemplate
        {
            get => (DataTemplate) GetValue(ConfirmationTemplateProperty);
            set => SetValue(ConfirmationTemplateProperty, value);
        }

        private void ConfirmationWindow_SourceInitialized(object sender, EventArgs e)
        {
            // Removing the Close Button on a WPF window.
            // The key here is hooking the SourceInitialized event and then using the SetWindowLong function to strip off the WS_SYSMENU bit. 
            var wih = new WindowInteropHelper(this);
            var style = GetWindowLong(wih.Handle, GWL_STYLE);
            SetWindowLong(wih.Handle, GWL_STYLE, style & ~WS_SYSMENU);
        }

        private const int GWL_STYLE = -16;
        private const int WS_SYSMENU = 0x00080000;

        [DllImport("user32.dll")]
        private static extern int SetWindowLong(IntPtr hwnd, int index, int value);

        [DllImport("user32.dll")]
        private static extern int GetWindowLong(IntPtr hwnd, int index);

        public void Connect(int connectionId, object target)
        {
            throw new NotImplementedException();
        }
    }
}