kmpdfkit_demo/Demo/Examples/PDFViewer/SettingsDialog.xaml.cs

using System;
using System.ComponentModel;
using System.Diagnostics;
using System.Windows;
using System.Windows.Controls;

namespace PDFViewer
{
    /// <summary>
    /// Interaction logic for SettingsDialog.xaml
    /// </summary>
    public partial class SettingsDialog : Window
    {
        public event EventHandler<string> LanguageChanged;
        public SettingsDialog()
        {
            InitializeComponent();
            Closing += MainWindow_Closing;
        }

        private void MainWindow_Closing(object sender, CancelEventArgs e)
        {
            Properties.Settings.Default.Save();
        }

        private void EventSetter_ClickHandler(object sender, RoutedEventArgs e)
        {
            var webLocation = (sender as Button)?.Tag.ToString();
            if (!string.IsNullOrEmpty(webLocation))
            {
                Process.Start(webLocation);
            }
        }

        private void SettingsDialog_Loaded(object sender, RoutedEventArgs e)
        {
            HighlightFormTog.IsChecked = Properties.Settings.Default.IsHighlightFormArea;
            HighlightLinkTog.IsChecked = Properties.Settings.Default.IsHighlightLinkArea;
            AuthorTxb.Text = Properties.Settings.Default.DocumentAuthor;
            ((ComboBoxItem)LanguageCmb.Items[0]).Content = Properties.Settings.Default.Language;
            LanguageCmb.SelectedIndex = 0;
        }

        private void AuthorTxb_TextChanged(object sender, TextChangedEventArgs e)
        {
            Properties.Settings.Default.DocumentAuthor = AuthorTxb.Text;
        }

        private void HighlightLinkTog_Click(object sender, RoutedEventArgs e)
        {
            if (HighlightLinkTog.IsChecked != null)
                Properties.Settings.Default.IsHighlightLinkArea = HighlightLinkTog.IsChecked.Value;
        }

        private void HighlightFormTog_Click(object sender, RoutedEventArgs e)
        {
            if (HighlightFormTog.IsChecked != null)
                Properties.Settings.Default.IsHighlightFormArea = HighlightFormTog.IsChecked.Value;
        }

        private void LanguageCmb_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            string language = ((ComboBoxItem)LanguageCmb.SelectedItem).Content.ToString();
            if (language.Equals(Properties.Settings.Default.Language))
            {
                return;
            }
            MessageBoxResult result = MessageBox.Show("You need to restart the application to apply the language change.\nDo you want to restart now?",
                "Restart Application", 
                MessageBoxButton.YesNo,
                MessageBoxImage.Question);
            if (result == MessageBoxResult.Yes)
            {
                Properties.Settings.Default.Language = language;
                Properties.Settings.Default.Save();
                LanguageChanged?.Invoke(this, language);
            }
            else
            {
                LanguageCmb.SelectedIndex = 0;
            }
        }
    }
}