Feat 174 add wpf example application

.gitignore

@@ -38,3 +38,6 @@ Thumbs.db
 
 # dotCover
 *.dotCover
+
+# VS
+.vs/

FeatureflowExample.sln

@@ -1,7 +1,10 @@
-
 Microsoft Visual Studio Solution File, Format Version 12.00
-# Visual Studio 2012
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FeatureflowExample", "FeatureflowExample\FeatureflowExample.csproj", "{F484363C-6E27-4C73-884B-D1E39A84ABB1}"
+# Visual Studio 15
+VisualStudioVersion = 15.0.28307.329
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "FeatureflowExample", "FeatureflowExample\FeatureflowExample.csproj", "{F484363C-6E27-4C73-884B-D1E39A84ABB1}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FeatureflowWpfExample", "FeatureflowWpfExample\FeatureflowWpfExample.csproj", "{AF38CDE1-EF0F-4306-AFAF-7BD89D2D0B5B}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -13,5 +16,15 @@ Global
 		{F484363C-6E27-4C73-884B-D1E39A84ABB1}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{F484363C-6E27-4C73-884B-D1E39A84ABB1}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{F484363C-6E27-4C73-884B-D1E39A84ABB1}.Release|Any CPU.Build.0 = Release|Any CPU
+		{AF38CDE1-EF0F-4306-AFAF-7BD89D2D0B5B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AF38CDE1-EF0F-4306-AFAF-7BD89D2D0B5B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AF38CDE1-EF0F-4306-AFAF-7BD89D2D0B5B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AF38CDE1-EF0F-4306-AFAF-7BD89D2D0B5B}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B0BF013A-5B4A-44FF-9BD7-21C2A78090EF}
 	EndGlobalSection
 EndGlobal

FeatureflowWpfExample/App.config

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.1" />
+    </startup>
+  <runtime>
+    <assemblyBinding xmlns="urn:schemas-microsoft-com:asm.v1">
+      <dependentAssembly>
+        <assemblyIdentity name="System.Net.Http" publicKeyToken="b03f5f7f11d50a3a" culture="neutral" />
+        <bindingRedirect oldVersion="0.0.0.0-4.1.1.3" newVersion="4.1.1.3" />
+      </dependentAssembly>
+    </assemblyBinding>
+  </runtime>
+</configuration>

FeatureflowWpfExample/App.xaml

@@ -0,0 +1,18 @@
+<Application x:Class="FeatureflowWpfExample.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             xmlns:local="clr-namespace:FeatureflowWpfExample"
+             xmlns:converters="clr-namespace:FeatureflowWpfExample.Converters"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+        <converters:ExampleToViewConverter x:Key="ExampleToViewConverter"/>
+        <converters:BooleanToOnOffConverter x:Key="BooleanToOnOffConverter"/>
+        <converters:ColorToBrushConverter x:Key="ColorToBrushConverter"/>
+
+        <Style x:Key="ExampleCaptionTextStyle" TargetType="TextBlock">
+            <Setter Property="FontSize" Value="16" />
+            <Setter Property="HorizontalAlignment" Value="Stretch" />
+            <Setter Property="TextWrapping" Value="Wrap" />
+        </Style>
+    </Application.Resources>
+</Application>

FeatureflowWpfExample/App.xaml.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows;
+
+namespace FeatureflowWpfExample
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+        protected override void OnStartup(StartupEventArgs e)
+        {
+            base.OnStartup(e);
+            FeatureflowClientProvider.IntializeClient("<< TYPE YOUR FEATUREFLOW KEY HERE >>");
+        }
+    }
+}

FeatureflowWpfExample/BaseExamplePage.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+
+namespace FeatureflowWpfExample
+{
+    public class BaseExamplePage
+        : Page
+    {
+        public BaseExamplePage()
+        {
+            Loaded += OnLoaded;
+            Unloaded += OnUnloaded;
+        }
+
+        private void OnLoaded(object sender, RoutedEventArgs e)
+        {
+            Loaded -= OnLoaded;
+            Activate();
+        }
+
+        private void OnUnloaded(object sender, RoutedEventArgs e)
+        {
+            Unloaded -= OnUnloaded;
+            Deactivate();
+        }
+
+        protected virtual void Activate()
+        {
+        }
+
+        protected virtual void Deactivate()
+        {
+        }
+    }
+}

FeatureflowWpfExample/Converters/BooleanToOnOffConverter.cs

@@ -0,0 +1,29 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+
+namespace FeatureflowWpfExample.Converters
+{
+    public class BooleanToOnOffConverter
+        : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value == null)
+            {
+                return null;
+            }
+
+            return (bool)value ? "On" : "Off";
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

FeatureflowWpfExample/Converters/ColorToBrushConverter.cs

@@ -0,0 +1,34 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Data;
+using System.Windows.Media;
+
+namespace FeatureflowWpfExample.Converters
+{
+    public class ColorToBrushConverter
+        : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is string s)
+            {
+                try
+                {
+                    return (SolidColorBrush)(new BrushConverter().ConvertFromString(s));
+                }
+                catch (Exception) { }
+            }
+
+            return new SolidColorBrush(Colors.Black);
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

FeatureflowWpfExample/Converters/ExampleToViewConverter.cs

@@ -0,0 +1,48 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Markup;
+
+namespace FeatureflowWpfExample.Converters
+{
+    public class ExampleToViewConverter
+        : IValueConverter
+    {
+        public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            if (value is Example e)
+            {
+                string pathToXaml = null;
+
+                switch (e.Tag)
+                {
+                    case ExampleTag.SimpleSwitch:
+                        pathToXaml = "Views/SimpleSwitchPage.xaml";
+                        break;
+
+                    case ExampleTag.TrafficLight:
+                        pathToXaml = "Views/TrafficLightPage.xaml";
+                        break;
+                }
+
+                if (pathToXaml != null)
+                {
+                    return (Page)Application.LoadComponent(new Uri(pathToXaml, UriKind.Relative));
+                }
+            }
+
+            return null;
+        }
+
+        public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+    }
+}

FeatureflowWpfExample/Example.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FeatureflowWpfExample
+{
+    public class Example
+    {
+        public ExampleTag Tag { get; set; }
+
+        public string Caption { get; set; }
+    }
+
+    public enum ExampleTag
+    {
+        SimpleSwitch,
+        TrafficLight,
+        Other,
+    }
+}

FeatureflowWpfExample/FeatureflowClientProvider.cs

@@ -0,0 +1,66 @@
+using Featureflow.Client;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FeatureflowWpfExample
+{
+    /// <summary>
+    /// Wrapper for access to faetureflow client singleton
+    /// </summary>
+    /// <returns></returns>
+    static class FeatureflowClientProvider
+    {
+        private static IFeatureflowClient _client;
+
+        internal static void IntializeClient(string apiKey)
+        {
+            IntializeClient(apiKey, null, null);
+        }
+
+        internal static void IntializeClient(string apiKey, FeatureflowConfig config)
+        {
+            IntializeClient(apiKey, null, config);
+        }
+
+        internal static void IntializeClient(string apiKey, IEnumerable<Feature> predefinedFeatures)
+        {
+            IntializeClient(apiKey, predefinedFeatures, null);
+        }
+
+        internal static void IntializeClient(string apiKey, IEnumerable<Feature> predefinedFeatures, FeatureflowConfig config)
+        {
+            EnsureUninitialized();
+            _client = Create(apiKey, predefinedFeatures, config);
+        }
+
+        internal static IFeatureflowClient GetClient()
+        {
+            EnsureInitialized();
+            return _client;
+        }
+
+        private static void EnsureUninitialized()
+        {
+            if (_client != null)
+            {
+                throw new ApplicationException("Featureflow client already initialized");
+            }
+        }
+
+        private static void EnsureInitialized()
+        {
+            if (_client == null)
+            {
+                throw new ApplicationException("Featureflow client must be initialized before using");
+            }
+        }
+
+        private static IFeatureflowClient Create(string apiKey, IEnumerable<Feature> predefinedFeatures, FeatureflowConfig config)
+        {
+            return FeatureflowClientFactory.Create(apiKey, predefinedFeatures, config);
+        }
+    }
+}