FloatingStatusWindow/FloatingStatusWindowLibrary/AppearanceWindow.xaml.cs

using Common.Wpf.Extensions;
using System.Linq;
using System.Windows.Media;

namespace FloatingStatusWindowLibrary
{
    internal partial class AppearanceWindow
    {
        private WindowSettings _currentSettings;

        private readonly WindowSettings _originalSettings;

        public AppearanceWindow(WindowSettings windowSettings)
        {
            InitializeComponent();

            _currentSettings = windowSettings;

            _originalSettings = (WindowSettings) _currentSettings.Clone();

            var allFonts = Fonts.SystemFontFamilies.OrderBy(x => x.Source);

            var filteredFonts = allFonts.Where(f => FontExtensions.IsComposite(f) || (!FontExtensions.IsSymbol(f) && FontExtensions.IsVisible(f)));

            FontNameCombo.ItemsSource = filteredFonts;

            DataContext = _currentSettings;
        }

        private void HandleOkayButtonClick(object sender, System.Windows.RoutedEventArgs e)
        {
            DialogResult = true;
            Close();
        }

        private void HandleWindowSourceUpdated(object sender, System.Windows.Data.DataTransferEventArgs e)
        {
            _currentSettings.Apply();
        }

        private void HandleWindowClosing(object sender, System.ComponentModel.CancelEventArgs e)
        {
            if (DialogResult == true)
                return;

            _currentSettings = _originalSettings;
            _currentSettings.Apply();
        }
    }
}