From 7ea92e36735390c747f7154c450388415c837ec0 Mon Sep 17 00:00:00 2001
From: Antony Male <antony.male@gmail.com>
Date: Tue, 4 Feb 2014 18:21:52 +0000
Subject: [PATCH] Add super-simple IoC container

---
 Stylet/Bootstrapper.cs  | 19 ++++++++++++++++++-
 Stylet/IoC.cs           | 25 +++++++++++++++++++++++++
 Stylet/Stylet.csproj    |  1 +
 Stylet/ViewLocator.cs   |  2 +-
 Stylet/WindowManager.cs |  2 +-
 5 files changed, 46 insertions(+), 3 deletions(-)
 create mode 100644 Stylet/IoC.cs

diff --git a/Stylet/Bootstrapper.cs b/Stylet/Bootstrapper.cs
index c2e9a1c..9dc93a3 100644
--- a/Stylet/Bootstrapper.cs
+++ b/Stylet/Bootstrapper.cs
@@ -27,10 +27,27 @@ namespace Stylet
 
             this.Application.Startup += (o, e) =>
             {
-                new WindowManager().ShowWindow(Activator.CreateInstance(typeof(TRootViewModel)));
+                IoC.Get<IWindowManager>().ShowWindow(IoC.Get<TRootViewModel>());
             };
+
+            IoC.GetInstance = this.GetInstance;
+            IoC.GetAllInstances = this.GetAllInstances;
+            IoC.BuildUp = this.BuildUp;
         }
 
+        protected virtual object GetInstance(Type service, string key = null)
+        {
+            if (service == typeof(IWindowManager)) service = typeof(WindowManager);
+            return Activator.CreateInstance(service);
+        }
+
+        protected virtual IEnumerable<object> GetAllInstances(Type service)
+        {
+            return new[] { Activator.CreateInstance(service) };
+        }
+
+        protected virtual void BuildUp(object instance) { }
+
         protected virtual void OnStartup(object sender, StartupEventArgs e) { }
         protected virtual void OnExit(object sender, EventArgs e) { }
         protected virtual void OnUnhandledExecption(object sender, DispatcherUnhandledExceptionEventArgs e) { }
diff --git a/Stylet/IoC.cs b/Stylet/IoC.cs
new file mode 100644
index 0000000..4bda045
--- /dev/null
+++ b/Stylet/IoC.cs
@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Stylet
+{
+    public static class IoC
+    {
+        public static Func<Type, string, object> GetInstance = (service, key) => { throw new InvalidOperationException("IoC is not initialized"); };
+        public static Func<Type, IEnumerable<object>> GetAllInstances = service => { throw new InvalidOperationException("IoC is not initialized"); };
+        public static Action<object> BuildUp = instance => { throw new InvalidOperationException("IoC is not initialized"); };
+
+        public static T Get<T>(string key = null)
+        {
+            return (T)GetInstance(typeof(T), key);
+        }
+
+        public static IEnumerable<T> GetAll<T>()
+        {
+            return GetAllInstances(typeof(T)).Cast<T>();
+        }
+    }
+}
diff --git a/Stylet/Stylet.csproj b/Stylet/Stylet.csproj
index 8117ebc..cb60be0 100644
--- a/Stylet/Stylet.csproj
+++ b/Stylet/Stylet.csproj
@@ -54,6 +54,7 @@
       <SubType>Designer</SubType>
     </ApplicationDefinition>
     <Compile Include="Bootstrapper.cs" />
+    <Compile Include="IoC.cs" />
     <Compile Include="SubView.xaml.cs">
       <DependentUpon>SubView.xaml</DependentUpon>
     </Compile>
diff --git a/Stylet/ViewLocator.cs b/Stylet/ViewLocator.cs
index 318a8c7..192ec15 100644
--- a/Stylet/ViewLocator.cs
+++ b/Stylet/ViewLocator.cs
@@ -23,7 +23,7 @@ namespace Stylet
             if (viewType.IsInterface || viewType.IsAbstract || !typeof(UIElement).IsAssignableFrom(viewType))
                 throw new Exception(String.Format("Found type for view : {0}, but it wasn't a class derived from UIElement", viewType.Name));
 
-            var view = (UIElement)Activator.CreateInstance(viewType);
+            var view = (UIElement)IoC.GetInstance(viewType, null);
 
             // If it doesn't have a code-behind, this won't be called
             var initializer = viewType.GetMethod("InitializeComponent", BindingFlags.Public | BindingFlags.Instance);
diff --git a/Stylet/WindowManager.cs b/Stylet/WindowManager.cs
index 13455bc..1fb897a 100644
--- a/Stylet/WindowManager.cs
+++ b/Stylet/WindowManager.cs
@@ -10,7 +10,7 @@ namespace Stylet
 {
     public interface IWindowManager
     {
-
+        void ShowWindow(object viewModel, IDictionary<string, object> settings = null);
     }
 
     public class WindowManager : IWindowManager