SEBWIN-110: Implemented basic version of wireless network system control.

SafeExamBrowser.Contracts/I18n/TextKey.cs

@@ -50,6 +50,9 @@ namespace SafeExamBrowser.Contracts.I18n
 		SystemControl_BatteryChargeLowInfo,
 		SystemControl_BatteryRemainingCharge,
 		SystemControl_KeyboardLayoutTooltip,
+		SystemControl_WirelessConnected,
+		SystemControl_WirelessDisconnected,
+		SystemControl_WirelessNotAvailable,
 		Version
 	}
 }

SafeExamBrowser.Contracts/UserInterface/Taskbar/ISystemWirelessNetworkControl.cs

@@ -20,6 +20,11 @@ namespace SafeExamBrowser.Contracts.UserInterface.Taskbar
 		/// </summary>
 		bool HasWirelessNetworkAdapter { set; }
 
+		/// <summary>
+		/// Indicates to the user that a wireless network connection is being established.
+		/// </summary>
+		bool IsConnecting { set; }
+
 		/// <summary>
 		/// Sets the current wireless network status.
 		/// </summary>

SafeExamBrowser.Core/I18n/Text.xml

@@ -35,5 +35,8 @@
   <SystemControl_BatteryChargeLowInfo>The battery charge is getting low. Consider connecting your computer to a power supply in time...</SystemControl_BatteryChargeLowInfo>
   <SystemControl_BatteryRemainingCharge>%%HOURS%%h %%MINUTES%%min remaining (%%CHARGE%%%)</SystemControl_BatteryRemainingCharge>
   <SystemControl_KeyboardLayoutTooltip>Click to choose a different keyboard layout...</SystemControl_KeyboardLayoutTooltip>
+  <SystemControl_WirelessConnected>Connected to '%%NAME%%'</SystemControl_WirelessConnected>
+  <SystemControl_WirelessDisconnected>Disconnected</SystemControl_WirelessDisconnected>
+  <SystemControl_WirelessNotAvailable>No wireless network adapter available or turned on</SystemControl_WirelessNotAvailable>
   <Version>Version</Version>
 </Text>

SafeExamBrowser.SystemComponents/WirelessNetwork.cs

@@ -8,7 +8,9 @@
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Timers;
+using SafeExamBrowser.Contracts.I18n;
 using SafeExamBrowser.Contracts.Logging;
 using SafeExamBrowser.Contracts.SystemComponents;
 using SafeExamBrowser.Contracts.UserInterface.Taskbar;
@@ -22,14 +24,17 @@ namespace SafeExamBrowser.SystemComponents
 	{
 		private const int TWO_SECONDS = 2000;
 
-		private ILogger logger;
 		private ISystemWirelessNetworkControl control;
+		private ILogger logger;
+		private IList<WirelessNetworkDefinition> networks = new List<WirelessNetworkDefinition>();
+		private IText text;
 		private Timer timer;
 		private Wifi wifi;
 
-		public WirelessNetwork(ILogger logger)
+		public WirelessNetwork(ILogger logger, IText text)
 		{
 			this.logger = logger;
+			this.text = text;
 		}
 
 		public void Initialize(ISystemWirelessNetworkControl control)
@@ -40,6 +45,7 @@ namespace SafeExamBrowser.SystemComponents
 			if (wifi.NoWifiAvailable || IsTurnedOff())
 			{
 				control.HasWirelessNetworkAdapter = false;
+				control.SetTooltip(text.Get(TextKey.SystemControl_WirelessNotAvailable));
 				logger.Info("Wireless networks cannot be monitored, as there is no hardware adapter available or it is turned off.");
 			}
 			else
@@ -72,7 +78,33 @@ namespace SafeExamBrowser.SystemComponents
 
 		private void Control_NetworkSelected(IWirelessNetwork network)
 		{
-			throw new NotImplementedException();
+			try
+			{
+				var accessPoint = networks.First(n => n.Id == network.Id).AccessPoint;
+				var authRequest = new AuthRequest(accessPoint);
+
+				accessPoint.ConnectAsync(authRequest, false, (success) => AccessPoint_OnConnectComplete(network.Name, success));
+				control.IsConnecting = true;
+			}
+			catch (Exception e)
+			{
+				logger.Error($"Failed to connect to wireless network '{network.Name}!'", e);
+			}
+		}
+
+		private void AccessPoint_OnConnectComplete(string name, bool success)
+		{
+			if (success)
+			{
+				logger.Info($"Successfully connected to wireless network '{name}'.");
+			}
+			else
+			{
+				logger.Error($"Failed to connect to wireless network '{name}!'");
+			}
+
+			control.IsConnecting = false;
+			UpdateControl();
 		}
 
 		private void Timer_Elapsed(object sender, ElapsedEventArgs e)
@@ -82,7 +114,7 @@ namespace SafeExamBrowser.SystemComponents
 
 		private void Wifi_ConnectionStatusChanged(object sender, WifiStatusEventArgs e)
 		{
-			control.NetworkStatus = ToStatus(e.NewStatus);
+			UpdateControl();
 		}
 
 		private bool IsTurnedOff()
@@ -112,32 +144,50 @@ namespace SafeExamBrowser.SystemComponents
 
 		private void UpdateControl()
 		{
-			var networks = new List<IWirelessNetwork>();
+			lock (networks)
-
-			control.NetworkStatus = ToStatus(wifi.ConnectionStatus);
-
-			try
 			{
-				foreach (var accessPoint in wifi.GetAccessPoints())
+				try
 				{
-					// The user may only connect to an already configured wireless network!
+					networks.Clear();
-					if (accessPoint.HasProfile)
+
+					foreach (var accessPoint in wifi.GetAccessPoints())
 					{
-						networks.Add(new WirelessNetworkDefinition
+						// The user may only connect to an already configured wireless network!
+						if (accessPoint.HasProfile)
 						{
-							Name = accessPoint.Name,
+							networks.Add(ToDefinition(accessPoint));
-							SignalStrength = Convert.ToInt32(accessPoint.SignalStrength),
+
-							Status = accessPoint.IsConnected ? WirelessNetworkStatus.Connected : WirelessNetworkStatus.Disconnected
+							if (accessPoint.IsConnected)
-						});
+							{
+								control.SetTooltip(text.Get(TextKey.SystemControl_WirelessConnected).Replace("%%NAME%%", accessPoint.Name));
+							}
+						}
 					}
+
+					if (wifi.ConnectionStatus == WifiStatus.Disconnected)
+					{
+						control.SetTooltip(text.Get(TextKey.SystemControl_WirelessDisconnected));
+					}
+
+					control.NetworkStatus = ToStatus(wifi.ConnectionStatus);
+					control.Update(new List<IWirelessNetwork>(networks));
+				}
+				catch (Exception e)
+				{
+					logger.Error("Failed to update the wireless network adapter status!", e);
 				}
 			}
-			catch (Exception e)
+		}
-			{
-				logger.Error("Failed to update the wireless network adapter status!", e);
-			}
 
-			control.Update(networks);
+		private WirelessNetworkDefinition ToDefinition(AccessPoint accessPoint)
+		{
+			return new WirelessNetworkDefinition
+			{
+				AccessPoint = accessPoint,
+				Name = accessPoint.Name,
+				SignalStrength = Convert.ToInt32(accessPoint.SignalStrength),
+				Status = accessPoint.IsConnected ? WirelessNetworkStatus.Connected : WirelessNetworkStatus.Disconnected
+			};
 		}
 
 		private WirelessNetworkStatus ToStatus(WifiStatus status)

SafeExamBrowser.SystemComponents/WirelessNetworkDefinition.cs

@@ -8,11 +8,14 @@
 
 using System;
 using SafeExamBrowser.Contracts.SystemComponents;
+using SimpleWifi;
 
 namespace SafeExamBrowser.SystemComponents
 {
 	internal class WirelessNetworkDefinition : IWirelessNetwork
 	{
+		internal AccessPoint AccessPoint { get; set; }
+
 		public Guid Id { get; }
 		public string Name { get; set; }
 		public int SignalStrength { get; set; }

SafeExamBrowser.UserInterface.Classic/Controls/WirelessNetworkButton.xaml

@@ -22,8 +22,8 @@
                     <ColumnDefinition Width="Auto" />
                 </Grid.ColumnDefinitions>
                 <TextBlock x:Name="IsCurrentTextBlock" Grid.Column="0" FontSize="20" HorizontalAlignment="Center" VerticalAlignment="Center" Visibility="Hidden">•</TextBlock>
-                <TextBlock x:Name="SignalStrengthTextBlock" Grid.Column="1" FontWeight="Bold" HorizontalAlignment="Left" Margin="10,0,5,0" VerticalAlignment="Center" />
+                <TextBlock x:Name="SignalStrengthTextBlock" Grid.Column="1" Foreground="Gray" HorizontalAlignment="Left" Margin="10,0,5,0" VerticalAlignment="Center" />
-                <TextBlock x:Name="NetworkNameTextBlock" Grid.Column="2" Foreground="Gray" HorizontalAlignment="Left" Margin="5,0,10,0" VerticalAlignment="Center" />
+                <TextBlock x:Name="NetworkNameTextBlock" Grid.Column="2" FontWeight="Bold" HorizontalAlignment="Left" Margin="5,0,10,0" VerticalAlignment="Center" />
             </Grid>
         </Button>
     </Grid>

SafeExamBrowser.UserInterface.Classic/Controls/WirelessNetworkControl.xaml

@@ -3,6 +3,7 @@
              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:fa="http://schemas.fontawesome.io/icons/"
              xmlns:s="clr-namespace:System;assembly=mscorlib"
              xmlns:local="clr-namespace:SafeExamBrowser.UserInterface.Classic.Controls"
              mc:Ignorable="d" d:DesignHeight="40" d:DesignWidth="40">
@@ -26,7 +27,13 @@
             </Border>
         </Popup>
         <Button x:Name="Button" Background="Transparent" HorizontalContentAlignment="Stretch" Template="{StaticResource TaskbarButton}"
-                ToolTipService.ShowOnDisabled="True" VerticalContentAlignment="Stretch" Width="40" />
+                ToolTipService.ShowOnDisabled="True" VerticalContentAlignment="Stretch" Width="40">
-        <TextBlock x:Name="NetworkStatusIcon" HorizontalAlignment="Right" Padding="6,2" Panel.ZIndex="10" VerticalAlignment="Bottom" />
+            <Grid>
+                <Viewbox x:Name="SignalStrengthIcon" Stretch="Uniform" Width="Auto" />
+                <fa:ImageAwesome x:Name="NoAdapterIcon" Foreground="Red" Icon="Ban" Margin="1" Opacity="0.2" Visibility="Collapsed" />
+                <fa:ImageAwesome x:Name="LoadingIcon" Foreground="Gray" Icon="Cog" Margin="5" Spin="True" SpinDuration="2" Visibility="Collapsed" />
+                <Image x:Name="NetworkStatusIcon" Height="10" HorizontalAlignment="Right" Margin="0,2" Panel.ZIndex="10" VerticalAlignment="Bottom" />
+            </Grid>
+        </Button>
     </Grid>
 </UserControl>

SafeExamBrowser.UserInterface.Classic/Controls/WirelessNetworkControl.xaml.cs

@@ -8,10 +8,13 @@
 
 using System;
 using System.Collections.Generic;
+using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Media;
+using FontAwesome.WPF;
 using SafeExamBrowser.Contracts.SystemComponents;
 using SafeExamBrowser.Contracts.UserInterface.Taskbar;
+using SafeExamBrowser.UserInterface.Classic.Utilities;
 
 namespace SafeExamBrowser.UserInterface.Classic.Controls
 {
@@ -24,6 +27,20 @@ namespace SafeExamBrowser.UserInterface.Classic.Controls
 				Dispatcher.BeginInvoke(new Action(() =>
 				{
 					Button.IsEnabled = value;
+					NoAdapterIcon.Visibility = value ? Visibility.Collapsed : Visibility.Visible;
+				}));
+			}
+		}
+
+		public bool IsConnecting
+		{
+			set
+			{
+				Dispatcher.Invoke(new Action(() =>
+				{
+					LoadingIcon.Visibility = value ? Visibility.Visible : Visibility.Collapsed;
+					SignalStrengthIcon.Visibility = value ? Visibility.Collapsed : Visibility.Visible;
+					NetworkStatusIcon.Visibility = value ? Visibility.Collapsed : Visibility.Visible;
 				}));
 			}
 		}
@@ -34,8 +51,10 @@ namespace SafeExamBrowser.UserInterface.Classic.Controls
 			{
 				Dispatcher.BeginInvoke(new Action(() =>
 				{
-					NetworkStatusIcon.Text = value == WirelessNetworkStatus.Connected ? "✔" : "❌";
+					var icon = value == WirelessNetworkStatus.Connected ? FontAwesomeIcon.Check : FontAwesomeIcon.Close;
-					NetworkStatusIcon.Foreground = value == WirelessNetworkStatus.Connected ? Brushes.Green : Brushes.Red;
+					var brush = value == WirelessNetworkStatus.Connected ? Brushes.Green : Brushes.Orange;
+
+					NetworkStatusIcon.Source = ImageAwesome.CreateImageSource(icon, brush);
 				}));
 			}
 		}
@@ -62,6 +81,8 @@ namespace SafeExamBrowser.UserInterface.Classic.Controls
 		{
 			Dispatcher.BeginInvoke(new Action(() =>
 			{
+				NetworksStackPanel.Children.Clear();
+
 				foreach (var network in networks)
 				{
 					var button = new WirelessNetworkButton();
@@ -78,6 +99,7 @@ namespace SafeExamBrowser.UserInterface.Classic.Controls
 					if (isCurrent)
 					{
 						NetworkStatus = network.Status;
+						SignalStrengthIcon.Child = GetIcon(network.SignalStrength);
 					}
 
 					NetworksStackPanel.Children.Add(button);
@@ -89,6 +111,7 @@ namespace SafeExamBrowser.UserInterface.Classic.Controls
 		{
 			var originalBrush = Button.Background;
 
+			SignalStrengthIcon.Child = GetIcon(0);
 			Button.Click += (o, args) => Popup.IsOpen = !Popup.IsOpen;
 			Button.MouseLeave += (o, args) => Popup.IsOpen = Popup.IsMouseOver;
 			Popup.MouseLeave += (o, args) => Popup.IsOpen = IsMouseOver;
@@ -105,5 +128,14 @@ namespace SafeExamBrowser.UserInterface.Classic.Controls
 				Button.Background = originalBrush;
 			};
 		}
+
+		private UIElement GetIcon(int signalStrength)
+		{
+			var icon = signalStrength > 66 ? "100" : (signalStrength > 33 ? "66" : (signalStrength > 0 ? "33" : "0"));
+			var uri = new Uri($"pack://application:,,,/SafeExamBrowser.UserInterface.Classic;component/Images/WiFi_{icon}.xaml");
+			var resource = new XamlIconResource(uri);
+
+			return IconResourceLoader.Load(resource);
+		}
 	}
 }

SafeExamBrowser.UserInterface.Classic/SafeExamBrowser.UserInterface.Classic.csproj

@@ -50,6 +50,9 @@
     <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
   </PropertyGroup>
   <ItemGroup>
+    <Reference Include="FontAwesome.WPF, Version=4.7.0.37774, Culture=neutral, PublicKeyToken=0758b07a11a4f466, processorArchitecture=MSIL">
+      <HintPath>..\packages\FontAwesome.WPF.4.7.0.9\lib\net40\FontAwesome.WPF.dll</HintPath>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="Microsoft.CSharp" />
     <Reference Include="System.Windows.Forms" />
@@ -255,6 +258,7 @@
       <Generator>ResXFileCodeGenerator</Generator>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
+    <None Include="packages.config" />
     <None Include="Properties\Settings.settings">
       <Generator>SettingsSingleFileGenerator</Generator>
       <LastGenOutput>Settings.Designer.cs</LastGenOutput>

SafeExamBrowser.UserInterface.Classic/packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="FontAwesome.WPF" version="4.7.0.9" targetFramework="net452" />
+</packages>

SafeExamBrowser/CompositionRoot.cs

@@ -82,7 +82,7 @@ namespace SafeExamBrowser
 			powerSupply = new PowerSupply(new ModuleLogger(logger, typeof(PowerSupply)), text);
 			processMonitor = new ProcessMonitor(new ModuleLogger(logger, typeof(ProcessMonitor)), nativeMethods);
 			windowMonitor = new WindowMonitor(new ModuleLogger(logger, typeof(WindowMonitor)), nativeMethods);
-			wirelessNetwork = new WirelessNetwork(new ModuleLogger(logger, typeof(WirelessNetwork)));
+			wirelessNetwork = new WirelessNetwork(new ModuleLogger(logger, typeof(WirelessNetwork)), text);
 
 			runtimeController = new RuntimeController(displayMonitor, new ModuleLogger(logger, typeof(RuntimeController)), processMonitor, Taskbar, windowMonitor);
 			ShutdownController = new ShutdownController(logger, settings, text, uiFactory);