Restore SEBPatch

SafeExamBrowser.UserInterface.Desktop/Windows/SplashScreen.xaml.cs

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+/*
+ * Copyright (c) 2024 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System.Windows;
+using System.Windows.Documents;
+using System.Windows.Media;
+using SafeExamBrowser.Configuration.Contracts;
+using SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.Windows;
+using SafeExamBrowser.UserInterface.Contracts.Windows.Events;
+using SafeExamBrowser.UserInterface.Desktop.ViewModels;
+
+namespace SafeExamBrowser.UserInterface.Desktop.Windows
+{
+	internal partial class SplashScreen : Window, ISplashScreen
+	{
+		private readonly ProgressIndicatorViewModel model;
+		private readonly IText text;
+
+		private AppConfig appConfig;
+		private bool allowClose;
+
+		private WindowClosedEventHandler closed;
+		private WindowClosingEventHandler closing;
+
+		public AppConfig AppConfig
+		{
+			set
+			{
+				Dispatcher.Invoke(() =>
+				{
+					appConfig = value;
+					UpdateAppInfo();
+				});
+			}
+		}
+
+		event WindowClosedEventHandler IWindow.Closed
+		{
+			add { closed += value; }
+			remove { closed -= value; }
+		}
+
+		event WindowClosingEventHandler IWindow.Closing
+		{
+			add { closing += value; }
+			remove { closing -= value; }
+		}
+
+		internal SplashScreen(IText text, AppConfig appConfig = null)
+		{
+			this.appConfig = appConfig;
+			this.model = new ProgressIndicatorViewModel();
+			this.text = text;
+
+			InitializeComponent();
+			InitializeSplashScreen();
+		}
+
+		public void BringToForeground()
+		{
+			Dispatcher.Invoke(Activate);
+		}
+
+		public new void Close()
+		{
+			Dispatcher.Invoke(() =>
+			{
+				allowClose = true;
+				model.BusyIndication = false;
+				closing?.Invoke();
+
+				base.Close();
+			});
+		}
+
+		public new void Hide()
+		{
+			Dispatcher.Invoke(base.Hide);
+		}
+
+		public new void Show()
+		{
+			Dispatcher.Invoke(base.Show);
+		}
+
+		public void Progress()
+		{
+			model.CurrentProgress += 1;
+		}
+
+		public void Regress()
+		{
+			model.CurrentProgress -= 1;
+		}
+
+		public void SetIndeterminate()
+		{
+			model.IsIndeterminate = true;
+		}
+
+		public void SetMaxValue(int max)
+		{
+			model.IsIndeterminate = false;
+			model.MaxProgress = max;
+		}
+
+		public void SetValue(int value)
+		{
+			model.CurrentProgress = value;
+		}
+
+		public void UpdateStatus(TextKey key, bool busyIndication = false)
+		{
+			model.Status = text.Get(key);
+			model.BusyIndication = busyIndication;
+		}
+
+		private void InitializeSplashScreen()
+		{
+			UpdateAppInfo();
+
+			StatusTextBlock.DataContext = model;
+			ProgressBar.DataContext = model;
+
+			Closed += (o, args) => closed?.Invoke();
+			Closing += (o, args) => args.Cancel = !allowClose;
+		}
+
+		private void UpdateAppInfo()
+		{
+			if (appConfig != null)
+			{
+				InfoTextBlock.Inlines.Add(new Run($"Version {appConfig.ProgramInformationalVersion}") { Foreground = Brushes.DimGray });
+				InfoTextBlock.Inlines.Add(new LineBreak());
+				InfoTextBlock.Inlines.Add(new LineBreak());
+				InfoTextBlock.Inlines.Add(new Run(appConfig.ProgramCopyright) { FontSize = 10 });
+			}
+		}
+	}
+}