SEBWIN-308: Implemented basic download overview for browser.

SafeExamBrowser.Browser/BrowserApplication.cs

@@ -23,6 +23,7 @@ using SafeExamBrowser.Logging.Contracts;
 using SafeExamBrowser.Settings.Browser.Proxy;
 using SafeExamBrowser.Settings.Logging;
 using SafeExamBrowser.UserInterface.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
 using SafeExamBrowser.UserInterface.Contracts.MessageBox;
 using BrowserSettings = SafeExamBrowser.Settings.Browser.BrowserSettings;
 
@@ -34,6 +35,7 @@ namespace SafeExamBrowser.Browser
 
 		private AppConfig appConfig;
 		private List<BrowserApplicationInstance> instances;
+		private IFileSystemDialog fileSystemDialog;
 		private IMessageBox messageBox;
 		private IModuleLogger logger;
 		private BrowserSettings settings;
@@ -53,12 +55,14 @@ namespace SafeExamBrowser.Browser
 		public BrowserApplication(
 			AppConfig appConfig,
 			BrowserSettings settings,
+			IFileSystemDialog fileSystemDialog,
 			IMessageBox messageBox,
 			IModuleLogger logger,
 			IText text,
 			IUserInterfaceFactory uiFactory)
 		{
 			this.appConfig = appConfig;
+			this.fileSystemDialog = fileSystemDialog;
 			this.instances = new List<BrowserApplicationInstance>();
 			this.logger = logger;
 			this.messageBox = messageBox;
@@ -122,7 +126,7 @@ namespace SafeExamBrowser.Browser
 			var isMainInstance = instances.Count == 0;
 			var instanceLogger = logger.CloneFor($"Browser Instance #{id}");
 			var startUrl = url ?? settings.StartUrl;
-			var instance = new BrowserApplicationInstance(appConfig, settings, id, isMainInstance, messageBox, instanceLogger, text, uiFactory, startUrl);
+			var instance = new BrowserApplicationInstance(appConfig, settings, id, isMainInstance, fileSystemDialog, messageBox, instanceLogger, text, uiFactory, startUrl);
 
 			instance.ConfigurationDownloadRequested += (fileName, args) => ConfigurationDownloadRequested?.Invoke(fileName, args);
 			instance.PopupRequested += Instance_PopupRequested;

SafeExamBrowser.Browser/BrowserApplicationInstance.cs

@@ -24,6 +24,8 @@ using SafeExamBrowser.Settings.Browser;
 using SafeExamBrowser.Settings.Browser.Filter;
 using SafeExamBrowser.UserInterface.Contracts;
 using SafeExamBrowser.UserInterface.Contracts.Browser;
+using SafeExamBrowser.UserInterface.Contracts.Browser.Data;
+using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
 using SafeExamBrowser.UserInterface.Contracts.MessageBox;
 
 namespace SafeExamBrowser.Browser
@@ -37,6 +39,7 @@ namespace SafeExamBrowser.Browser
 		private IBrowserWindow window;
 		private HttpClient httpClient;
 		private bool isMainInstance;
+		private IFileSystemDialog fileSystemDialog;
 		private IMessageBox messageBox;
 		private IModuleLogger logger;
 		private BrowserSettings settings;
@@ -69,6 +72,7 @@ namespace SafeExamBrowser.Browser
 			BrowserSettings settings,
 			int id,
 			bool isMainInstance,
+			IFileSystemDialog fileSystemDialog,
 			IMessageBox messageBox,
 			IModuleLogger logger,
 			IText text,
@@ -79,6 +83,7 @@ namespace SafeExamBrowser.Browser
 			this.Id = id;
 			this.httpClient = new HttpClient();
 			this.isMainInstance = isMainInstance;
+			this.fileSystemDialog = fileSystemDialog;
 			this.messageBox = messageBox;
 			this.logger = logger;
 			this.settings = settings;
@@ -122,6 +127,7 @@ namespace SafeExamBrowser.Browser
 			displayHandler.FaviconChanged += DisplayHandler_FaviconChanged;
 			displayHandler.ProgressChanged += DisplayHandler_ProgressChanged;
 			downloadHandler.ConfigurationDownloadRequested += DownloadHandler_ConfigurationDownloadRequested;
+			downloadHandler.DownloadUpdated += DownloadHandler_DownloadUpdated;
 			keyboardHandler.ReloadRequested += ReloadRequested;
 			keyboardHandler.ZoomInRequested += ZoomInRequested;
 			keyboardHandler.ZoomOutRequested += ZoomOutRequested;
@@ -211,8 +217,7 @@ namespace SafeExamBrowser.Browser
 
 		private void DialogHandler_DialogRequested(DialogRequestedEventArgs args)
 		{
-			var dialog = uiFactory.CreateFileSystemDialog(args.Element, args.InitialPath, args.Operation, title: args.Title);
+			var result = fileSystemDialog.Show(args.Element, args.InitialPath, args.Operation, title: args.Title, owner: window);
-			var result = dialog.Show(window);
 
 			if (result.Success)
 			{
@@ -269,6 +274,11 @@ namespace SafeExamBrowser.Browser
 			}
 		}
 
+		private void DownloadHandler_DownloadUpdated(DownloadItemState state)
+		{
+			window.UpdateDownloadState(state);
+		}
+
 		private void LifeSpanHandler_PopupRequested(PopupRequestedEventArgs args)
 		{
 			var validCurrentUri = Uri.TryCreate(control.Address, UriKind.Absolute, out var currentUri);

SafeExamBrowser.Browser/Events/DownloadUpdatedEventHandler.cs

@@ -0,0 +1,14 @@
+/*
+ * Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
+ * 
+ * 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 SafeExamBrowser.UserInterface.Contracts.Browser.Data;
+
+namespace SafeExamBrowser.Browser.Events
+{
+	internal delegate void DownloadUpdatedEventHandler(DownloadItemState state);
+}

SafeExamBrowser.Browser/Handlers/DownloadHandler.cs

@@ -12,8 +12,10 @@ using System.IO;
 using System.Threading.Tasks;
 using CefSharp;
 using SafeExamBrowser.Browser.Contracts.Events;
+using SafeExamBrowser.Browser.Events;
 using SafeExamBrowser.Configuration.Contracts;
 using SafeExamBrowser.Logging.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.Browser.Data;
 using Syroot.Windows.IO;
 using BrowserSettings = SafeExamBrowser.Settings.Browser.BrowserSettings;
 
@@ -24,14 +26,17 @@ namespace SafeExamBrowser.Browser.Handlers
 		private AppConfig appConfig;
 		private BrowserSettings settings;
 		private ConcurrentDictionary<int, DownloadFinishedCallback> callbacks;
+		private ConcurrentDictionary<int, Guid> downloads;
 		private ILogger logger;
 
 		internal event DownloadRequestedEventHandler ConfigurationDownloadRequested;
+		internal event DownloadUpdatedEventHandler DownloadUpdated;
 
 		internal DownloadHandler(AppConfig appConfig, BrowserSettings settings, ILogger logger)
 		{
 			this.appConfig = appConfig;
 			this.callbacks = new ConcurrentDictionary<int, DownloadFinishedCallback>();
+			this.downloads = new ConcurrentDictionary<int, Guid>();
 			this.logger = logger;
 			this.settings = settings;
 		}
@@ -60,18 +65,35 @@ namespace SafeExamBrowser.Browser.Handlers
 
 		public void OnDownloadUpdated(IWebBrowser webBrowser, IBrowser browser, DownloadItem downloadItem, IDownloadItemCallback callback)
 		{
-			// TODO: Show download progress in respective window -> event for BrowserApplicationInstance!
+			var hasId = downloads.TryGetValue(downloadItem.Id, out var id);
+
+			if (hasId)
+			{
+				var state = new DownloadItemState(id)
+				{
+					Completion = downloadItem.PercentComplete / 100.0,
+					FullPath = downloadItem.FullPath,
+					IsCancelled = downloadItem.IsCancelled,
+					IsComplete = downloadItem.IsComplete,
+					Url = downloadItem.Url
+				};
+				
+				Task.Run(() => DownloadUpdated?.Invoke(state));
+			}
 
 			if (downloadItem.IsComplete || downloadItem.IsCancelled)
 			{
+				logger.Debug($"Download of '{downloadItem.Url}' {(downloadItem.IsComplete ? "is complete" : "was cancelled")}.");
+
 				if (callbacks.TryRemove(downloadItem.Id, out DownloadFinishedCallback finished) && finished != null)
 				{
 					Task.Run(() => finished.Invoke(downloadItem.IsComplete, downloadItem.FullPath));
 				}
 
-				logger.Debug($"Download of '{downloadItem.Url}' {(downloadItem.IsComplete ? "is complete" : "was cancelled")}.");
+				if (hasId)
-
+				{
-				// TODO: Show success message or download icon like Firefox in respective window!
+					downloads.TryRemove(downloadItem.Id, out _);
+				}
 			}
 		}
 
@@ -100,6 +122,8 @@ namespace SafeExamBrowser.Browser.Handlers
 				logger.Debug($"Automatically downloading file as '{filePath}'.");
 			}
 
+			downloads[downloadItem.Id] = Guid.NewGuid();
+
 			using (callback)
 			{
 				callback.Continue(filePath, showDialog);

SafeExamBrowser.Browser/SafeExamBrowser.Browser.csproj

@@ -68,6 +68,7 @@
     <Compile Include="BrowserApplicationInstance.cs" />
     <Compile Include="Events\DialogRequestedEventArgs.cs" />
     <Compile Include="Events\DialogRequestedEventHandler.cs" />
+    <Compile Include="Events\DownloadUpdatedEventHandler.cs" />
     <Compile Include="Events\FaviconChangedEventHandler.cs" />
     <Compile Include="Events\InstanceTerminatedEventHandler.cs" />
     <Compile Include="Events\PopupRequestedEventArgs.cs" />

SafeExamBrowser.Client/CompositionRoot.cs

@@ -42,6 +42,7 @@ using SafeExamBrowser.SystemComponents.Keyboard;
 using SafeExamBrowser.SystemComponents.PowerSupply;
 using SafeExamBrowser.SystemComponents.WirelessNetwork;
 using SafeExamBrowser.UserInterface.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
 using SafeExamBrowser.UserInterface.Contracts.MessageBox;
 using SafeExamBrowser.UserInterface.Contracts.Shell;
 using SafeExamBrowser.UserInterface.Shared.Activators;
@@ -197,8 +198,9 @@ namespace SafeExamBrowser.Client
 
 		private IOperation BuildBrowserOperation()
 		{
+			var fileSystemDialog = BuildFileSystemDialog();
 			var moduleLogger = ModuleLogger(nameof(BrowserApplication));
-			var browser = new BrowserApplication(context.AppConfig, context.Settings.Browser, messageBox, moduleLogger, text, uiFactory);
+			var browser = new BrowserApplication(context.AppConfig, context.Settings.Browser, fileSystemDialog, messageBox, moduleLogger, text, uiFactory);
 			var operation = new BrowserOperation(actionCenter, context, logger, taskbar, taskview, uiFactory);
 
 			context.Browser = browser;
@@ -282,6 +284,17 @@ namespace SafeExamBrowser.Client
 			}
 		}
 
+		private IFileSystemDialog BuildFileSystemDialog()
+		{
+			switch (uiMode)
+			{
+				case UserInterfaceMode.Mobile:
+					return new Mobile.FileSystemDialogFactory(text);
+				default:
+					return new Desktop.FileSystemDialogFactory(text);
+			}
+		}
+
 		private IMessageBox BuildMessageBox()
 		{
 			switch (uiMode)

SafeExamBrowser.I18n.Contracts/TextKey.cs

@@ -22,6 +22,9 @@ namespace SafeExamBrowser.I18n.Contracts
 		Browser_Name,
 		Browser_Tooltip,
 		BrowserWindow_DeveloperConsoleMenuItem,
+		BrowserWindow_Downloading,
+		BrowserWindow_DownloadCancelled,
+		BrowserWindow_DownloadComplete,
 		BrowserWindow_ZoomMenuItem,
 		Build,
 		FileSystemDialog_Cancel,

SafeExamBrowser.I18n/Text.xml

@@ -24,6 +24,15 @@
     <Entry key="BrowserWindow_DeveloperConsoleMenuItem">
         Developer Console
     </Entry>
+    <Entry key="BrowserWindow_Downloading">
+        Downloading...
+    </Entry>
+    <Entry key="BrowserWindow_DownloadCancelled">
+        Cancelled.
+    </Entry>
+    <Entry key="BrowserWindow_DownloadComplete">
+        Downloaded.
+    </Entry>
     <Entry key="BrowserWindow_ZoomMenuItem">
         Page Zoom
     </Entry>

SafeExamBrowser.UserInterface.Contracts/Browser/Data/DownloadItemState.cs

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
+ * 
+ * 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;
+
+namespace SafeExamBrowser.UserInterface.Contracts.Browser.Data
+{
+	/// <summary>
+	/// Defines the state of a download item.
+	/// </summary>
+	public class DownloadItemState
+	{
+		/// <summary>
+		/// The current completion of the item, as percentage value from <c>0.0</c> to <c>1.0</c>.
+		/// </summary>
+		public double Completion { get; set; }
+
+		/// <summary>
+		/// The full path of the download location for the item.
+		/// </summary>
+		public string FullPath { get; set; }
+
+		/// <summary>
+		/// The unique identifier of the item.
+		/// </summary>
+		public Guid Id { get; set; }
+
+		/// <summary>
+		/// Indicates that the download was cancelled.
+		/// </summary>
+		public bool IsCancelled { get; set; }
+
+		/// <summary>
+		/// Indicates that the download was completed.
+		/// </summary>
+		public bool IsComplete { get; set; }
+
+		/// <summary>
+		/// The download URL of the item.
+		/// </summary>
+		public string Url { get; set; }
+
+		public DownloadItemState(Guid id)
+		{
+			Id = id;
+		}
+	}
+}

SafeExamBrowser.UserInterface.Contracts/Browser/IBrowserWindow.cs

@@ -8,6 +8,7 @@
 
 using System;
 using SafeExamBrowser.Applications.Contracts.Resources.Icons;
+using SafeExamBrowser.UserInterface.Contracts.Browser.Data;
 using SafeExamBrowser.UserInterface.Contracts.Browser.Events;
 using SafeExamBrowser.UserInterface.Contracts.Windows;
 
@@ -83,6 +84,11 @@ namespace SafeExamBrowser.UserInterface.Contracts.Browser
 		/// </summary>
 		void UpdateIcon(IconResource icon);
 
+		/// <summary>
+		/// Updates the download state for the given item.
+		/// </summary>
+		void UpdateDownloadState(DownloadItemState state);
+
 		/// <summary>
 		/// Updates the loading state according to the given value.
 		/// </summary>

SafeExamBrowser.UserInterface.Contracts/FileSystemDialog/IFileSystemDialog.cs

@@ -13,8 +13,8 @@ namespace SafeExamBrowser.UserInterface.Contracts.FileSystemDialog
 	public interface IFileSystemDialog
 	{
 		/// <summary>
-		/// Shows the dialog to the user. If a parent window is specified, the dialog is rendered modally for the given parent.
+		/// Creates a dialog according to the given parameters and shows it to the user.
 		/// </summary>
-		FileSystemDialogResult Show(IWindow parent = null);
+		FileSystemDialogResult Show(FileSystemElement element, string initialPath, FileSystemOperation operation, string message = default(string), string title = default(string), IWindow owner = default(IWindow));
 	}
 }

SafeExamBrowser.UserInterface.Contracts/IUserInterfaceFactory.cs

@@ -18,7 +18,6 @@ using SafeExamBrowser.SystemComponents.Contracts.Keyboard;
 using SafeExamBrowser.SystemComponents.Contracts.PowerSupply;
 using SafeExamBrowser.SystemComponents.Contracts.WirelessNetwork;
 using SafeExamBrowser.UserInterface.Contracts.Browser;
-using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
 using SafeExamBrowser.UserInterface.Contracts.Shell;
 using SafeExamBrowser.UserInterface.Contracts.Windows;
 using SafeExamBrowser.UserInterface.Contracts.Windows.Data;
@@ -50,11 +49,6 @@ namespace SafeExamBrowser.UserInterface.Contracts
 		/// </summary>
 		IBrowserWindow CreateBrowserWindow(IBrowserControl control, BrowserSettings settings, bool isMainWindow);
 
-		/// <summary>
-		/// Creates a file system dialog according to the given parameters.
-		/// </summary>
-		IFileSystemDialog CreateFileSystemDialog(FileSystemElement element, string initialPath, FileSystemOperation operation, string message = default(string), string title = default(string));
-
 		/// <summary>
 		/// Creates a folder dialog with the given message.
 		/// </summary>

SafeExamBrowser.UserInterface.Contracts/SafeExamBrowser.UserInterface.Contracts.csproj

@@ -54,6 +54,7 @@
     <Reference Include="Microsoft.CSharp" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Browser\Data\DownloadItemState.cs" />
     <Compile Include="Browser\Events\AddressChangedEventHandler.cs" />
     <Compile Include="Browser\Events\LoadingStateChangedEventHandler.cs" />
     <Compile Include="Browser\Events\TitleChangedEventHandler.cs" />

SafeExamBrowser.UserInterface.Desktop/BrowserWindow.xaml

@@ -33,12 +33,21 @@
                         <ColumnDefinition Width="Auto" />
                         <ColumnDefinition Width="*" />
                         <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="Auto" />
                     </Grid.ColumnDefinitions>
                     <Button Grid.Column="0" x:Name="BackwardButton" Height="30" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <Button Grid.Column="1" x:Name="ForwardButton" Height="30" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <Button Grid.Column="2" x:Name="ReloadButton" Height="30" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <TextBox Grid.Column="3" x:Name="UrlTextBox" Height="25" HorizontalAlignment="Stretch" Margin="5,0" Padding="5,0" VerticalContentAlignment="Center" />
-                    <Button Grid.Column="4" x:Name="MenuButton" Height="30" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
+                    <Button Grid.Column="4" x:Name="DownloadsButton" Height="30" HorizontalAlignment="Center" Margin="5" Padding="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" Visibility="Collapsed">
+                        <fa:ImageAwesome Icon="Download" />
+                    </Button>
+                    <Popup x:Name="DownloadsPopup" AllowsTransparency="True" PopupAnimation="Slide" Placement="Custom" PlacementTarget="{Binding ElementName=BrowserControlHost}">
+                        <Border Background="{StaticResource BackgroundBrush}" BorderBrush="LightGray" BorderThickness="1,0,1,1" MinWidth="250">
+                            <StackPanel x:Name="Downloads" Orientation="Vertical" />
+                        </Border>
+                    </Popup>
+                    <Button Grid.Column="5" x:Name="MenuButton" Height="30" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <Popup x:Name="MenuPopup" IsOpen="False" AllowsTransparency="True" PopupAnimation="Slide" Placement="Custom" PlacementTarget="{Binding ElementName=BrowserControlHost}">
                         <Border Background="{StaticResource BackgroundBrush}" BorderBrush="LightGray" BorderThickness="1,0,1,1" Width="250">
                             <StackPanel Orientation="Vertical">

SafeExamBrowser.UserInterface.Desktop/BrowserWindow.xaml.cs

@@ -13,16 +13,17 @@ using System.Windows;
 using System.Windows.Controls.Primitives;
 using System.Windows.Input;
 using System.Windows.Interop;
-using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using SafeExamBrowser.Applications.Contracts.Resources.Icons;
 using SafeExamBrowser.I18n.Contracts;
 using SafeExamBrowser.Settings.Browser;
 using SafeExamBrowser.UserInterface.Contracts;
 using SafeExamBrowser.UserInterface.Contracts.Browser;
+using SafeExamBrowser.UserInterface.Contracts.Browser.Data;
 using SafeExamBrowser.UserInterface.Contracts.Browser.Events;
 using SafeExamBrowser.UserInterface.Contracts.Windows;
 using SafeExamBrowser.UserInterface.Contracts.Windows.Events;
+using SafeExamBrowser.UserInterface.Desktop.Controls.Browser;
 using SafeExamBrowser.UserInterface.Shared.Utilities;
 
 namespace SafeExamBrowser.UserInterface.Desktop
@@ -117,6 +118,36 @@ namespace SafeExamBrowser.UserInterface.Desktop
 			});
 		}
 
+		public void UpdateDownloadState(DownloadItemState state)
+		{
+			Dispatcher.InvokeAsync(() =>
+			{
+				var isNewItem = true;
+
+				foreach (var child in Downloads.Children)
+				{
+					if (child is DownloadItemControl control && control.Id == state.Id)
+					{
+						control.Update(state);
+						isNewItem = false;
+
+						break;
+					}
+				}
+
+				if (isNewItem)
+				{
+					var control = new DownloadItemControl(state.Id, text);
+
+					control.Update(state);
+					Downloads.Children.Add(control);
+				}
+
+				DownloadsButton.Visibility = Visibility.Visible;
+				DownloadsPopup.IsOpen = IsActive;
+			});
+		}
+
 		public void UpdateLoadingState(bool isLoading)
 		{
 			Dispatcher.Invoke(() => ProgressBar.Visibility = isLoading ? Visibility.Visible : Visibility.Hidden);
@@ -167,7 +198,7 @@ namespace SafeExamBrowser.UserInterface.Desktop
 			}
 		}
 
-		private CustomPopupPlacement[] MenuPopup_PlacementCallback(Size popupSize, Size targetSize, Point offset)
+		private CustomPopupPlacement[] Popup_PlacementCallback(Size popupSize, Size targetSize, Point offset)
 		{
 			return new[]
 			{
@@ -216,21 +247,23 @@ namespace SafeExamBrowser.UserInterface.Desktop
 
 		private void RegisterEvents()
 		{
-			var originalBrush = MenuButton.Background;
-
 			BackwardButton.Click += (o, args) => BackwardNavigationRequested?.Invoke();
 			Closing += BrowserWindow_Closing;
 			DeveloperConsoleButton.Click += (o, args) => DeveloperConsoleRequested?.Invoke();
+			DownloadsButton.Click += (o, args) => DownloadsPopup.IsOpen = !DownloadsPopup.IsOpen;
+			DownloadsButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => DownloadsPopup.IsOpen = DownloadsPopup.IsMouseOver));
+			DownloadsPopup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
+			DownloadsPopup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => DownloadsPopup.IsOpen = DownloadsPopup.IsMouseOver));
 			ForwardButton.Click += (o, args) => ForwardNavigationRequested?.Invoke();
 			Loaded += BrowserWindow_Loaded;
 			MenuButton.Click += (o, args) => MenuPopup.IsOpen = !MenuPopup.IsOpen;
 			MenuButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => MenuPopup.IsOpen = MenuPopup.IsMouseOver));
-			MenuPopup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(MenuPopup_PlacementCallback);
+			MenuPopup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			MenuPopup.Closed += (o, args) => MenuButton.Background = originalBrush;
+			MenuPopup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => MenuPopup.IsOpen = MenuPopup.IsMouseOver));
-			MenuPopup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => MenuPopup.IsOpen = IsMouseOver));
-			MenuPopup.Opened += (o, args) => MenuButton.Background = Brushes.LightGray;
 			KeyUp += BrowserWindow_KeyUp;
+			LocationChanged += (o, args) => { DownloadsPopup.IsOpen = false; MenuPopup.IsOpen = false; };
 			ReloadButton.Click += (o, args) => ReloadRequested?.Invoke();
+			SizeChanged += (o, args) => { DownloadsPopup.IsOpen = false; MenuPopup.IsOpen = false; };
 			SystemParameters.StaticPropertyChanged += SystemParameters_StaticPropertyChanged;
 			UrlTextBox.GotKeyboardFocus += (o, args) => UrlTextBox.SelectAll();
 			UrlTextBox.GotMouseCapture += UrlTextBox_GotMouseCapture;

SafeExamBrowser.UserInterface.Desktop/Controls/Browser/DownloadItemControl.xaml

@@ -0,0 +1,22 @@
+<UserControl x:Class="SafeExamBrowser.UserInterface.Desktop.Controls.Browser.DownloadItemControl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:SafeExamBrowser.UserInterface.Desktop.Controls.Browser"
+             mc:Ignorable="d" d:DesignHeight="50" d:DesignWidth="200">
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto" />
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+        <ContentControl Grid.Row="0" Grid.RowSpan="2" Grid.Column="0" Panel.ZIndex="2" Name="Icon" Margin="10" Width="25" />
+        <ProgressBar Grid.Row="0" Grid.RowSpan="2" Grid.Column="0" Grid.ColumnSpan="2" Panel.ZIndex="1" Name="Progress" BorderThickness="0" />
+        <TextBlock Grid.Row="0" Grid.Column="1" Panel.ZIndex="2" Name="ItemName" FontWeight="Bold" Margin="0,10,10,0" />
+        <TextBlock Grid.Row="1" Grid.Column="1" Panel.ZIndex="2"  Name="Status" FontStyle="Italic" Margin="0,0,10,10" />
+    </Grid>
+</UserControl>

SafeExamBrowser.UserInterface.Desktop/Controls/Browser/DownloadItemControl.xaml.cs

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
+ * 
+ * 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.IO;
+using System.Windows.Controls;
+using SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.Browser.Data;
+using SafeExamBrowser.UserInterface.Shared.Utilities;
+
+namespace SafeExamBrowser.UserInterface.Desktop.Controls.Browser
+{
+	public partial class DownloadItemControl : UserControl
+	{
+		private IText text;
+
+		public Guid Id { get; }
+
+		public DownloadItemControl(Guid id, IText text)
+		{
+			this.Id = id;
+			this.text = text;
+
+			InitializeComponent();
+		}
+
+		public void Update(DownloadItemState state)
+		{
+			ItemName.Text = Uri.TryCreate(state.Url, UriKind.Absolute, out var uri) ? Path.GetFileName(uri.AbsolutePath) : state.Url;
+			Progress.Value = state.Completion * 100;
+			Status.Text = $"{text.Get(TextKey.BrowserWindow_Downloading)} ({state.Completion * 100}%)";
+
+			if (File.Exists(state.FullPath))
+			{
+				ItemName.Text = Path.GetFileName(state.FullPath);
+				Icon.Content = new Image { Source = IconLoader.LoadIconFor(new FileInfo(state.FullPath)) };
+			}
+
+			if (state.IsCancelled)
+			{
+				Progress.Visibility = System.Windows.Visibility.Collapsed;
+				Status.Text = text.Get(TextKey.BrowserWindow_DownloadCancelled);
+			}
+			else if (state.IsComplete)
+			{
+				Progress.Visibility = System.Windows.Visibility.Collapsed;
+				Status.Text = text.Get(TextKey.BrowserWindow_DownloadComplete);
+			}
+		}
+	}
+}

SafeExamBrowser.UserInterface.Desktop/FileSystemDialog.xaml

@@ -5,7 +5,7 @@
         xmlns:fa="http://schemas.fontawesome.io/icons/"
         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
         xmlns:local="clr-namespace:SafeExamBrowser.UserInterface.Desktop"
-        mc:Ignorable="d" Height="500" Width="750" ResizeMode="NoResize">
+        mc:Ignorable="d" Height="500" Width="750" ResizeMode="NoResize" WindowStartupLocation="CenterScreen">
     <Window.Resources>
         <ResourceDictionary>
             <ResourceDictionary.MergedDictionaries>

SafeExamBrowser.UserInterface.Desktop/FileSystemDialog.xaml.cs

@@ -22,12 +22,13 @@ using SafeExamBrowser.UserInterface.Shared.Utilities;
 
 namespace SafeExamBrowser.UserInterface.Desktop
 {
-	public partial class FileSystemDialog : Window, IFileSystemDialog
+	public partial class FileSystemDialog : Window
 	{
 		private FileSystemElement element;
 		private string initialPath;
 		private string message;
 		private FileSystemOperation operation;
+		private IWindow parent;
 		private IText text;
 		private string title;
 
@@ -37,12 +38,14 @@ namespace SafeExamBrowser.UserInterface.Desktop
 			FileSystemOperation operation,
 			IText text,
 			string message = default(string),
-			string title = default(string))
+			string title = default(string),
+			IWindow parent = default(IWindow))
 		{
 			this.element = element;
 			this.initialPath = initialPath;
 			this.message = message;
 			this.operation = operation;
+			this.parent = parent;
 			this.text = text;
 			this.title = title;
 
@@ -50,26 +53,23 @@ namespace SafeExamBrowser.UserInterface.Desktop
 			InitializeDialog();
 		}
 
-		public FileSystemDialogResult Show(IWindow parent = null)
+		internal new FileSystemDialogResult Show()
 		{
-			return Dispatcher.Invoke(() =>
+			var result = new FileSystemDialogResult();
+
+			if (parent is Window)
 			{
-				var result = new FileSystemDialogResult();
+				Owner = parent as Window;
+				WindowStartupLocation = WindowStartupLocation.CenterOwner;
+			}
 
-				if (parent is Window)
+			if (ShowDialog() == true)
-				{
+			{
-					Owner = parent as Window;
+				result.FullPath = BuildFullPath();
-					WindowStartupLocation = WindowStartupLocation.CenterOwner;
+				result.Success = true;
-				}
+			}
 
-				if (ShowDialog() == true)
+			return result;
-				{
-					result.FullPath = BuildFullPath();
-					result.Success = true;
-				}
-
-				return result;
-			});
 		}
 
 		private void CancelButton_Click(object sender, RoutedEventArgs e)

SafeExamBrowser.UserInterface.Desktop/FileSystemDialogFactory.cs

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
+ * 
+ * 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 SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
+using SafeExamBrowser.UserInterface.Contracts.Windows;
+
+namespace SafeExamBrowser.UserInterface.Desktop
+{
+	public class FileSystemDialogFactory : IFileSystemDialog
+	{
+		private IText text;
+
+		public FileSystemDialogFactory(IText text)
+		{
+			this.text = text;
+		}
+
+		public FileSystemDialogResult Show(FileSystemElement element, string initialPath, FileSystemOperation operation, string message = null, string title = null, IWindow owner = null)
+		{
+			if (owner is Window window)
+			{
+				return window.Dispatcher.Invoke(() => new FileSystemDialog(element, initialPath, operation, text, message, title, owner).Show());
+			}
+			else
+			{
+				return new FileSystemDialog(element, initialPath, operation, text, message, title).Show();
+			}
+		}
+	}
+}

SafeExamBrowser.UserInterface.Desktop/SafeExamBrowser.UserInterface.Desktop.csproj

@@ -109,6 +109,9 @@
     <Compile Include="Controls\ActionCenterWirelessNetworkControl.xaml.cs">
       <DependentUpon>ActionCenterWirelessNetworkControl.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Controls\Browser\DownloadItemControl.xaml.cs">
+      <DependentUpon>DownloadItemControl.xaml</DependentUpon>
+    </Compile>
     <Compile Include="Controls\TaskbarApplicationControl.xaml.cs">
       <DependentUpon>TaskbarApplicationControl.xaml</DependentUpon>
     </Compile>
@@ -148,6 +151,7 @@
     <Compile Include="FileSystemDialog.xaml.cs">
       <DependentUpon>FileSystemDialog.xaml</DependentUpon>
     </Compile>
+    <Compile Include="FileSystemDialogFactory.cs" />
     <Compile Include="FolderDialog.cs" />
     <Compile Include="LockScreen.xaml.cs">
       <DependentUpon>LockScreen.xaml</DependentUpon>
@@ -229,6 +233,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="Controls\Browser\DownloadItemControl.xaml">
+      <SubType>Designer</SubType>
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
     <Page Include="Controls\TaskbarApplicationControl.xaml">
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>

SafeExamBrowser.UserInterface.Desktop/UserInterfaceFactory.cs

@@ -23,7 +23,6 @@ using SafeExamBrowser.SystemComponents.Contracts.PowerSupply;
 using SafeExamBrowser.SystemComponents.Contracts.WirelessNetwork;
 using SafeExamBrowser.UserInterface.Contracts;
 using SafeExamBrowser.UserInterface.Contracts.Browser;
-using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
 using SafeExamBrowser.UserInterface.Contracts.Shell;
 using SafeExamBrowser.UserInterface.Contracts.Windows;
 using SafeExamBrowser.UserInterface.Contracts.Windows.Data;
@@ -76,11 +75,6 @@ namespace SafeExamBrowser.UserInterface.Desktop
 			return Application.Current.Dispatcher.Invoke(() => new BrowserWindow(control, settings, isMainWindow, text));
 		}
 
-		public IFileSystemDialog CreateFileSystemDialog(FileSystemElement element, string initialPath, FileSystemOperation operation, string message = default(string), string title = default(string))
-		{
-			return Application.Current.Dispatcher.Invoke(() => new FileSystemDialog(element, initialPath, operation, text, message, title));
-		}
-
 		public IFolderDialog CreateFolderDialog(string message)
 		{
 			return new FolderDialog(message);
@@ -105,26 +99,26 @@ namespace SafeExamBrowser.UserInterface.Desktop
 
 		public IWindow CreateLogWindow(ILogger logger)
 		{
-			LogWindow logWindow = null;
+			var window = default(LogWindow);
-			var logWindowReadyEvent = new AutoResetEvent(false);
+			var windowReadyEvent = new AutoResetEvent(false);
-			var logWindowThread = new Thread(() =>
+			var windowThread = new Thread(() =>
 			{
-				logWindow = new LogWindow(logger, text);
+				window = new LogWindow(logger, text);
-				logWindow.Closed += (o, args) => logWindow.Dispatcher.InvokeShutdown();
+				window.Closed += (o, args) => window.Dispatcher.InvokeShutdown();
-				logWindow.Show();
+				window.Show();
 
-				logWindowReadyEvent.Set();
+				windowReadyEvent.Set();
 
 				System.Windows.Threading.Dispatcher.Run();
 			});
 
-			logWindowThread.SetApartmentState(ApartmentState.STA);
+			windowThread.SetApartmentState(ApartmentState.STA);
-			logWindowThread.IsBackground = true;
+			windowThread.IsBackground = true;
-			logWindowThread.Start();
+			windowThread.Start();
 
-			logWindowReadyEvent.WaitOne();
+			windowReadyEvent.WaitOne();
 
-			return logWindow;
+			return window;
 		}
 
 		public INotificationControl CreateNotificationControl(INotificationController controller, INotificationInfo info, Location location)
@@ -168,27 +162,26 @@ namespace SafeExamBrowser.UserInterface.Desktop
 
 		public ISplashScreen CreateSplashScreen(AppConfig appConfig = null)
 		{
-			SplashScreen splashScreen = null;
+			var window = default(SplashScreen);
-			var splashReadyEvent = new AutoResetEvent(false);
+			var windowReadyEvent = new AutoResetEvent(false);
-			var splashScreenThread = new Thread(() =>
+			var windowThread = new Thread(() =>
 			{
-				splashScreen = new SplashScreen(text, appConfig);
+				window = new SplashScreen(text, appConfig);
-				splashScreen.Closed += (o, args) => splashScreen.Dispatcher.InvokeShutdown();
+				window.Closed += (o, args) => window.Dispatcher.InvokeShutdown();
-				splashScreen.Show();
+				window.Show();
 
-				splashReadyEvent.Set();
+				windowReadyEvent.Set();
 
 				System.Windows.Threading.Dispatcher.Run();
 			});
 
-			splashScreenThread.SetApartmentState(ApartmentState.STA);
+			windowThread.SetApartmentState(ApartmentState.STA);
-			splashScreenThread.Name = nameof(SplashScreen);
+			windowThread.IsBackground = true;
-			splashScreenThread.IsBackground = true;
+			windowThread.Start();
-			splashScreenThread.Start();
 
-			splashReadyEvent.WaitOne();
+			windowReadyEvent.WaitOne();
 
-			return splashScreen;
+			return window;
 		}
 
 		public ISystemControl CreateWirelessNetworkControl(IWirelessAdapter wirelessAdapter, Location location)

SafeExamBrowser.UserInterface.Mobile/BrowserWindow.xaml

@@ -33,12 +33,21 @@
                         <ColumnDefinition Width="Auto" />
                         <ColumnDefinition Width="*" />
                         <ColumnDefinition Width="Auto" />
+                        <ColumnDefinition Width="Auto" />
                     </Grid.ColumnDefinitions>
                     <Button Grid.Column="0" x:Name="BackwardButton" Height="50" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <Button Grid.Column="1" x:Name="ForwardButton" Height="50" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <Button Grid.Column="2" x:Name="ReloadButton" Height="50" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <TextBox Grid.Column="3" x:Name="UrlTextBox" Height="50" HorizontalAlignment="Stretch" Margin="5,10" Padding="8" VerticalContentAlignment="Center" />
-                    <Button Grid.Column="4" x:Name="MenuButton" Height="50" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
+                    <Button Grid.Column="4" x:Name="DownloadsButton" Height="50" HorizontalAlignment="Center" Margin="5" Padding="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" Visibility="Collapsed">
+                        <fa:ImageAwesome Icon="Download" />
+                    </Button>
+                    <Popup x:Name="DownloadsPopup" AllowsTransparency="True" PopupAnimation="Slide" Placement="Custom" PlacementTarget="{Binding ElementName=BrowserControlHost}">
+                        <Border Background="{StaticResource BackgroundBrush}" BorderBrush="LightGray" BorderThickness="1,0,1,1" MinWidth="250">
+                            <StackPanel x:Name="Downloads" Orientation="Vertical" />
+                        </Border>
+                    </Popup>
+                    <Button Grid.Column="5" x:Name="MenuButton" Height="50" HorizontalAlignment="Center" Margin="5" Template="{StaticResource BrowserButton}" VerticalAlignment="Center" />
                     <Popup x:Name="MenuPopup" IsOpen="False" AllowsTransparency="True" PopupAnimation="Slide" Placement="Custom" PlacementTarget="{Binding ElementName=BrowserControlHost}">
                         <Border Background="{StaticResource BackgroundBrush}" BorderBrush="LightGray" BorderThickness="1,0,1,1" Width="350">
                             <StackPanel Orientation="Vertical">

SafeExamBrowser.UserInterface.Mobile/BrowserWindow.xaml.cs

@@ -13,16 +13,17 @@ using System.Windows;
 using System.Windows.Controls.Primitives;
 using System.Windows.Input;
 using System.Windows.Interop;
-using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using SafeExamBrowser.Applications.Contracts.Resources.Icons;
 using SafeExamBrowser.I18n.Contracts;
 using SafeExamBrowser.Settings.Browser;
 using SafeExamBrowser.UserInterface.Contracts;
 using SafeExamBrowser.UserInterface.Contracts.Browser;
+using SafeExamBrowser.UserInterface.Contracts.Browser.Data;
 using SafeExamBrowser.UserInterface.Contracts.Browser.Events;
 using SafeExamBrowser.UserInterface.Contracts.Windows;
 using SafeExamBrowser.UserInterface.Contracts.Windows.Events;
+using SafeExamBrowser.UserInterface.Mobile.Controls.Browser;
 using SafeExamBrowser.UserInterface.Shared.Utilities;
 
 namespace SafeExamBrowser.UserInterface.Mobile
@@ -117,6 +118,36 @@ namespace SafeExamBrowser.UserInterface.Mobile
 			});
 		}
 
+		public void UpdateDownloadState(DownloadItemState state)
+		{
+			Dispatcher.InvokeAsync(() =>
+			{
+				var isNewItem = true;
+
+				foreach (var child in Downloads.Children)
+				{
+					if (child is DownloadItemControl control && control.Id == state.Id)
+					{
+						control.Update(state);
+						isNewItem = false;
+
+						break;
+					}
+				}
+
+				if (isNewItem)
+				{
+					var control = new DownloadItemControl(state.Id, text);
+
+					control.Update(state);
+					Downloads.Children.Add(control);
+				}
+
+				DownloadsButton.Visibility = Visibility.Visible;
+				DownloadsPopup.IsOpen = IsActive;
+			});
+		}
+
 		public void UpdateLoadingState(bool isLoading)
 		{
 			Dispatcher.Invoke(() => ProgressBar.Visibility = isLoading ? Visibility.Visible : Visibility.Hidden);
@@ -167,7 +198,7 @@ namespace SafeExamBrowser.UserInterface.Mobile
 			}
 		}
 
-		private CustomPopupPlacement[] MenuPopup_PlacementCallback(Size popupSize, Size targetSize, Point offset)
+		private CustomPopupPlacement[] Popup_PlacementCallback(Size popupSize, Size targetSize, Point offset)
 		{
 			return new[]
 			{
@@ -216,21 +247,23 @@ namespace SafeExamBrowser.UserInterface.Mobile
 
 		private void RegisterEvents()
 		{
-			var originalBrush = MenuButton.Background;
-
 			BackwardButton.Click += (o, args) => BackwardNavigationRequested?.Invoke();
 			Closing += BrowserWindow_Closing;
 			DeveloperConsoleButton.Click += (o, args) => DeveloperConsoleRequested?.Invoke();
+			DownloadsButton.Click += (o, args) => DownloadsPopup.IsOpen = !DownloadsPopup.IsOpen;
+			DownloadsButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => DownloadsPopup.IsOpen = DownloadsPopup.IsMouseOver));
+			DownloadsPopup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
+			DownloadsPopup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => DownloadsPopup.IsOpen = DownloadsPopup.IsMouseOver));
 			ForwardButton.Click += (o, args) => ForwardNavigationRequested?.Invoke();
 			Loaded += BrowserWindow_Loaded;
 			MenuButton.Click += (o, args) => MenuPopup.IsOpen = !MenuPopup.IsOpen;
 			MenuButton.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => MenuPopup.IsOpen = MenuPopup.IsMouseOver));
-			MenuPopup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(MenuPopup_PlacementCallback);
+			MenuPopup.CustomPopupPlacementCallback = new CustomPopupPlacementCallback(Popup_PlacementCallback);
-			MenuPopup.Closed += (o, args) => MenuButton.Background = originalBrush;
+			MenuPopup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => MenuPopup.IsOpen = MenuPopup.IsMouseOver));
-			MenuPopup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() => MenuPopup.IsOpen = IsMouseOver));
-			MenuPopup.Opened += (o, args) => MenuButton.Background = Brushes.LightGray;
 			KeyUp += BrowserWindow_KeyUp;
+			LocationChanged += (o, args) => { DownloadsPopup.IsOpen = false; MenuPopup.IsOpen = false; };
 			ReloadButton.Click += (o, args) => ReloadRequested?.Invoke();
+			SizeChanged += (o, args) => { DownloadsPopup.IsOpen = false; MenuPopup.IsOpen = false; };
 			SystemParameters.StaticPropertyChanged += SystemParameters_StaticPropertyChanged;
 			UrlTextBox.GotKeyboardFocus += (o, args) => UrlTextBox.SelectAll();
 			UrlTextBox.GotMouseCapture += UrlTextBox_GotMouseCapture;
@@ -270,6 +303,7 @@ namespace SafeExamBrowser.UserInterface.Mobile
 				ForwardButton.Height = 35;
 				ReloadButton.Height = 35;
 				UrlTextBox.Height = 20;
+				DownloadsButton.Height = 35;
 				MenuButton.Height = 35;
 			}
 		}

SafeExamBrowser.UserInterface.Mobile/Controls/Browser/DownloadItemControl.xaml

@@ -0,0 +1,22 @@
+<UserControl x:Class="SafeExamBrowser.UserInterface.Mobile.Controls.Browser.DownloadItemControl"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
+             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
+             xmlns:local="clr-namespace:SafeExamBrowser.UserInterface.Mobile.Controls.Browser"
+             mc:Ignorable="d" d:DesignHeight="50" d:DesignWidth="200">
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto" />
+            <ColumnDefinition Width="*" />
+        </Grid.ColumnDefinitions>
+        <Grid.RowDefinitions>
+            <RowDefinition Height="*" />
+            <RowDefinition Height="*" />
+        </Grid.RowDefinitions>
+        <ContentControl Grid.Row="0" Grid.RowSpan="2" Grid.Column="0" Panel.ZIndex="2" Name="Icon" Margin="10" Width="25" />
+        <ProgressBar Grid.Row="0" Grid.RowSpan="2" Grid.Column="0" Grid.ColumnSpan="2" Panel.ZIndex="1" Name="Progress" BorderThickness="0" />
+        <TextBlock Grid.Row="0" Grid.Column="1" Panel.ZIndex="2" Name="ItemName" FontWeight="Bold" Margin="0,10,10,0" />
+        <TextBlock Grid.Row="1" Grid.Column="1" Panel.ZIndex="2"  Name="Status" FontStyle="Italic" Margin="0,0,10,10" />
+    </Grid>
+</UserControl>

SafeExamBrowser.UserInterface.Mobile/Controls/Browser/DownloadItemControl.xaml.cs

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
+ * 
+ * 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.IO;
+using System.Windows.Controls;
+using SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.Browser.Data;
+using SafeExamBrowser.UserInterface.Shared.Utilities;
+
+namespace SafeExamBrowser.UserInterface.Mobile.Controls.Browser
+{
+	public partial class DownloadItemControl : UserControl
+	{
+		private IText text;
+
+		public Guid Id { get; }
+
+		public DownloadItemControl(Guid id, IText text)
+		{
+			this.Id = id;
+			this.text = text;
+
+			InitializeComponent();
+		}
+
+		public void Update(DownloadItemState state)
+		{
+			ItemName.Text = Uri.TryCreate(state.Url, UriKind.Absolute, out var uri) ? Path.GetFileName(uri.AbsolutePath) : state.Url;
+			Progress.Value = state.Completion * 100;
+			Status.Text = $"{text.Get(TextKey.BrowserWindow_Downloading)} ({state.Completion * 100}%)";
+
+			if (File.Exists(state.FullPath))
+			{
+				ItemName.Text = Path.GetFileName(state.FullPath);
+				Icon.Content = new Image { Source = IconLoader.LoadIconFor(new FileInfo(state.FullPath)) };
+			}
+
+			if (state.IsCancelled)
+			{
+				Progress.Visibility = System.Windows.Visibility.Collapsed;
+				Status.Text = text.Get(TextKey.BrowserWindow_DownloadCancelled);
+			}
+			else if (state.IsComplete)
+			{
+				Progress.Visibility = System.Windows.Visibility.Collapsed;
+				Status.Text = text.Get(TextKey.BrowserWindow_DownloadComplete);
+			}
+		}
+	}
+}

SafeExamBrowser.UserInterface.Mobile/FileSystemDialog.xaml.cs

@@ -22,7 +22,7 @@ using SafeExamBrowser.UserInterface.Shared.Utilities;
 
 namespace SafeExamBrowser.UserInterface.Mobile
 {
-	public partial class FileSystemDialog : Window, IFileSystemDialog
+	public partial class FileSystemDialog : Window
 	{
 		private FileSystemElement element;
 		private string initialPath;
@@ -30,6 +30,7 @@ namespace SafeExamBrowser.UserInterface.Mobile
 		private FileSystemOperation operation;
 		private IText text;
 		private string title;
+		private IWindow parent;
 
 		public FileSystemDialog(
 			FileSystemElement element,
@@ -37,12 +38,14 @@ namespace SafeExamBrowser.UserInterface.Mobile
 			FileSystemOperation operation,
 			IText text,
 			string message = default(string),
-			string title = default(string))
+			string title = default(string),
+			IWindow parent = default(IWindow))
 		{
 			this.element = element;
 			this.initialPath = initialPath;
 			this.message = message;
 			this.operation = operation;
+			this.parent = parent;
 			this.text = text;
 			this.title = title;
 
@@ -50,26 +53,23 @@ namespace SafeExamBrowser.UserInterface.Mobile
 			InitializeDialog();
 		}
 
-		public FileSystemDialogResult Show(IWindow parent = null)
+		internal new FileSystemDialogResult Show()
 		{
-			return Dispatcher.Invoke(() =>
+			var result = new FileSystemDialogResult();
+
+			if (parent is Window)
 			{
-				var result = new FileSystemDialogResult();
+				Owner = parent as Window;
+				WindowStartupLocation = WindowStartupLocation.CenterOwner;
+			}
 
-				if (parent is Window)
+			if (ShowDialog() == true)
-				{
+			{
-					Owner = parent as Window;
+				result.FullPath = BuildFullPath();
-					WindowStartupLocation = WindowStartupLocation.CenterOwner;
+				result.Success = true;
-				}
+			}
 
-				if (ShowDialog() == true)
+			return result;
-				{
-					result.FullPath = BuildFullPath();
-					result.Success = true;
-				}
-
-				return result;
-			});
 		}
 
 		private void CancelButton_Click(object sender, RoutedEventArgs e)

SafeExamBrowser.UserInterface.Mobile/FileSystemDialogFactory.cs

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2020 ETH Zürich, Educational Development and Technology (LET)
+ * 
+ * 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 SafeExamBrowser.I18n.Contracts;
+using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
+using SafeExamBrowser.UserInterface.Contracts.Windows;
+
+namespace SafeExamBrowser.UserInterface.Mobile
+{
+	public class FileSystemDialogFactory : IFileSystemDialog
+	{
+		private IText text;
+
+		public FileSystemDialogFactory(IText text)
+		{
+			this.text = text;
+		}
+
+		public FileSystemDialogResult Show(FileSystemElement element, string initialPath, FileSystemOperation operation, string message = null, string title = null, IWindow owner = null)
+		{
+			if (owner is Window window)
+			{
+				return window.Dispatcher.Invoke(() => new FileSystemDialog(element, initialPath, operation, text, message, title, owner).Show());
+			}
+			else
+			{
+				return new FileSystemDialog(element, initialPath, operation, text, message, title).Show();
+			}
+		}
+	}
+}

SafeExamBrowser.UserInterface.Mobile/SafeExamBrowser.UserInterface.Mobile.csproj

@@ -110,6 +110,9 @@
     <Compile Include="Controls\ActionCenterWirelessNetworkControl.xaml.cs">
       <DependentUpon>ActionCenterWirelessNetworkControl.xaml</DependentUpon>
     </Compile>
+    <Compile Include="Controls\Browser\DownloadItemControl.xaml.cs">
+      <DependentUpon>DownloadItemControl.xaml</DependentUpon>
+    </Compile>
     <Compile Include="Controls\TaskbarApplicationControl.xaml.cs">
       <DependentUpon>TaskbarApplicationControl.xaml</DependentUpon>
     </Compile>
@@ -149,6 +152,7 @@
     <Compile Include="FileSystemDialog.xaml.cs">
       <DependentUpon>FileSystemDialog.xaml</DependentUpon>
     </Compile>
+    <Compile Include="FileSystemDialogFactory.cs" />
     <Compile Include="FolderDialog.cs" />
     <Compile Include="LockScreen.xaml.cs">
       <DependentUpon>LockScreen.xaml</DependentUpon>
@@ -279,6 +283,10 @@
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>
     </Page>
+    <Page Include="Controls\Browser\DownloadItemControl.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
     <Page Include="Controls\TaskbarApplicationControl.xaml">
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>

SafeExamBrowser.UserInterface.Mobile/UserInterfaceFactory.cs

@@ -23,7 +23,6 @@ using SafeExamBrowser.SystemComponents.Contracts.PowerSupply;
 using SafeExamBrowser.SystemComponents.Contracts.WirelessNetwork;
 using SafeExamBrowser.UserInterface.Contracts;
 using SafeExamBrowser.UserInterface.Contracts.Browser;
-using SafeExamBrowser.UserInterface.Contracts.FileSystemDialog;
 using SafeExamBrowser.UserInterface.Contracts.Shell;
 using SafeExamBrowser.UserInterface.Contracts.Windows;
 using SafeExamBrowser.UserInterface.Contracts.Windows.Data;
@@ -76,11 +75,6 @@ namespace SafeExamBrowser.UserInterface.Mobile
 			return Application.Current.Dispatcher.Invoke(() => new BrowserWindow(control, settings, isMainWindow, text));
 		}
 
-		public IFileSystemDialog CreateFileSystemDialog(FileSystemElement element, string initialPath, FileSystemOperation operation, string message = default(string), string title = default(string))
-		{
-			return Application.Current.Dispatcher.Invoke(() => new FileSystemDialog(element, initialPath, operation, text, message, title));
-		}
-
 		public IFolderDialog CreateFolderDialog(string message)
 		{
 			return new FolderDialog(message);
@@ -105,26 +99,26 @@ namespace SafeExamBrowser.UserInterface.Mobile
 
 		public IWindow CreateLogWindow(ILogger logger)
 		{
-			LogWindow logWindow = null;
+			var window = default(LogWindow);
-			var logWindowReadyEvent = new AutoResetEvent(false);
+			var windowReadyEvent = new AutoResetEvent(false);
-			var logWindowThread = new Thread(() =>
+			var windowThread = new Thread(() =>
 			{
-				logWindow = new LogWindow(logger, text);
+				window = new LogWindow(logger, text);
-				logWindow.Closed += (o, args) => logWindow.Dispatcher.InvokeShutdown();
+				window.Closed += (o, args) => window.Dispatcher.InvokeShutdown();
-				logWindow.Show();
+				window.Show();
 
-				logWindowReadyEvent.Set();
+				windowReadyEvent.Set();
 
 				System.Windows.Threading.Dispatcher.Run();
 			});
 
-			logWindowThread.SetApartmentState(ApartmentState.STA);
+			windowThread.SetApartmentState(ApartmentState.STA);
-			logWindowThread.IsBackground = true;
+			windowThread.IsBackground = true;
-			logWindowThread.Start();
+			windowThread.Start();
 
-			logWindowReadyEvent.WaitOne();
+			windowReadyEvent.WaitOne();
 
-			return logWindow;
+			return window;
 		}
 
 		public INotificationControl CreateNotificationControl(INotificationController controller, INotificationInfo info, Location location)
@@ -168,27 +162,26 @@ namespace SafeExamBrowser.UserInterface.Mobile
 
 		public ISplashScreen CreateSplashScreen(AppConfig appConfig = null)
 		{
-			SplashScreen splashScreen = null;
+			var window = default(SplashScreen);
-			var splashReadyEvent = new AutoResetEvent(false);
+			var windowReadyEvent = new AutoResetEvent(false);
-			var splashScreenThread = new Thread(() =>
+			var windowThread = new Thread(() =>
 			{
-				splashScreen = new SplashScreen(text, appConfig);
+				window = new SplashScreen(text, appConfig);
-				splashScreen.Closed += (o, args) => splashScreen.Dispatcher.InvokeShutdown();
+				window.Closed += (o, args) => window.Dispatcher.InvokeShutdown();
-				splashScreen.Show();
+				window.Show();
 
-				splashReadyEvent.Set();
+				windowReadyEvent.Set();
 
 				System.Windows.Threading.Dispatcher.Run();
 			});
 
-			splashScreenThread.SetApartmentState(ApartmentState.STA);
+			windowThread.SetApartmentState(ApartmentState.STA);
-			splashScreenThread.Name = nameof(SplashScreen);
+			windowThread.IsBackground = true;
-			splashScreenThread.IsBackground = true;
+			windowThread.Start();
-			splashScreenThread.Start();
 
-			splashReadyEvent.WaitOne();
+			windowReadyEvent.WaitOne();
 
-			return splashScreen;
+			return window;
 		}
 
 		public ISystemControl CreateWirelessNetworkControl(IWirelessAdapter wirelessAdapter, Location location)