Implement color coding for DNS return codes (#456)

Author: Dola-Shuvi

SimpleDnsCrypt/Converters/QueryLogReturnCodeToColorConverter.cs

@@ -0,0 +1,45 @@
+using SimpleDnsCrypt.Models;
+using System;
+using System.Globalization;
+using System.Windows.Data;
+
+namespace SimpleDnsCrypt.Converters
+{
+	public class QueryLogReturnCodeToColorConverter : IValueConverter
+	{
+		public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			var logLineReturnCode = (QueryLogReturnCode) value;
+			switch (logLineReturnCode)
+			{
+				case QueryLogReturnCode.PASS:
+					return "#FF8ab329";
+				case QueryLogReturnCode.FORWARD:
+					return "#FF8ab329";
+				case QueryLogReturnCode.DROP:
+					return "#FFB32929";
+				case QueryLogReturnCode.REJECT:
+					return "#FFB32929";
+				case QueryLogReturnCode.SYNTH:
+					return "#FF8ab329";
+				case QueryLogReturnCode.PARSE_ERROR:
+					return "#FFB32929";
+				case QueryLogReturnCode.NXDOMAIN:
+					return "#FFB36729";
+				case QueryLogReturnCode.RESPONSE_ERROR:
+					return "#FFB32929";
+				case QueryLogReturnCode.SERVER_ERROR:
+					return "#FFB32929";
+				case QueryLogReturnCode.CLOAK:
+					return "#FF2a3b68";
+				default:
+					return "#FFB32929";
+			}
+		}
+
+		public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+		{
+			throw new NotImplementedException();
+		}
+	}
+}

SimpleDnsCrypt/SimpleDnsCrypt.csproj

@@ -104,6 +104,7 @@
     <Compile Include="Converters\LocalDateConverter.cs" />
     <Compile Include="Converters\MessageBoxTypeToColor.cs" />
     <Compile Include="Converters\ProtocolToVisibilityConverter.cs" />
+    <Compile Include="Converters\QueryLogReturnCodeToColorConverter.cs" />
     <Compile Include="Converters\QueryLogTypeToColorConverter.cs" />
     <Compile Include="Converters\ReverseBoolToEnabledConverter.cs" />
     <Compile Include="Converters\RouteStateToColorConverter.cs" />

SimpleDnsCrypt/Views/MainView.xaml

@@ -25,6 +25,7 @@
             <converters:BoolToVisibilityCollapsedConverter x:Key="BoolToVisibilityCollapsedConverter" />
             <converters:ReverseBoolToEnabledConverter x:Key="ReverseBoolToEnabledConverter" />
             <converters:QueryLogTypeToColorConverter x:Key="QueryLogTypeToColorConverter" />
+            <converters:QueryLogReturnCodeToColorConverter x:Key="QueryLogReturnCodeToColorConverter" />
             <converters:LocalDateConverter x:Key="LocalDateConverter" />
             <converters:IntegerBoolToVisibilityConverter x:Key="IntegerBoolToVisibilityConverter" />
             <converters:ServerListBackgroundConverter x:Key="ServerListBackgroundConverter" />
@@ -1049,7 +1050,7 @@
                                                             <TextBlock Grid.Column="1" Text="{Binding Type}"
                                                                        Foreground="{Binding Type, Converter={StaticResource QueryLogTypeToColorConverter}}" />
                                                             <TextBlock Grid.Column="2" Text="{Binding ReturnCode}"
-                                                                       Foreground="#FF575757" />
+                                                                       Foreground="{Binding ReturnCode, Converter={StaticResource QueryLogReturnCodeToColorConverter}}" />
                                                             <TextBlock Grid.Column="3" Text="{Binding Address}"
                                                                        Foreground="#FF575757" />
                                                             <TextBlock Grid.Column="4" Text="{Binding Remote}"