Restore SEBPatch

SafeExamBrowser.UserInterface.Mobile/ViewModels/RuntimeWindowViewModel.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;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Documents;
+using System.Windows.Media;
+using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.Settings.Logging;
+
+namespace SafeExamBrowser.UserInterface.Mobile.ViewModels
+{
+	internal class RuntimeWindowViewModel : ProgressIndicatorViewModel
+	{
+		private Visibility progressBarVisibility;
+		private readonly TextBlock textBlock;
+
+		public Visibility ProgressBarVisibility
+		{
+			get
+			{
+				return progressBarVisibility;
+			}
+			set
+			{
+				progressBarVisibility = value;
+				OnPropertyChanged(nameof(ProgressBarVisibility));
+			}
+		}
+
+		public RuntimeWindowViewModel(TextBlock textBlock)
+		{
+			this.textBlock = textBlock;
+		}
+
+		public void Notify(ILogContent content)
+		{
+			switch (content)
+			{
+				case ILogText text:
+					AppendLogText(text);
+					break;
+				case ILogMessage message:
+					AppendLogMessage(message);
+					break;
+				default:
+					throw new NotImplementedException($"The runtime window is not yet implemented for log content of type {content.GetType()}!");
+			}
+		}
+
+		private void AppendLogMessage(ILogMessage message)
+		{
+			var time = message.DateTime.ToString("HH:mm:ss.fff");
+			var severity = message.Severity.ToString().ToUpper();
+
+			var infoRun = new Run($"{time} - ") { Foreground = Brushes.Gray };
+			var messageRun = new Run($"{severity}: {message.Message}{Environment.NewLine}") { Foreground = GetBrushFor(message.Severity) };
+
+			textBlock.Inlines.Add(infoRun);
+			textBlock.Inlines.Add(messageRun);
+		}
+
+		private void AppendLogText(ILogText text)
+		{
+			textBlock.Inlines.Add(new Run($"{text.Text}{Environment.NewLine}"));
+		}
+
+		private Brush GetBrushFor(LogLevel severity)
+		{
+			switch (severity)
+			{
+				case LogLevel.Debug:
+					return Brushes.Gray;
+				case LogLevel.Error:
+					return Brushes.Red;
+				case LogLevel.Warning:
+					return Brushes.Orange;
+				default:
+					return Brushes.Black;
+			}
+		}
+	}
+}