Commit d182815

@@ -3,7 +3,6 @@ using System.Threading;
 using System.Windows;
 using System.Windows.Threading;
 using Autofac;
-using Castle.DynamicProxy;
 using gorilla.infrastructure.container;
 using gorilla.infrastructure.threading;
 using gorilla.utility;

@@ -6,5 +6,15 @@ namespace solidware.financials.windows.ui.presenters
     {
         public string Symbol { get; set; }
         public Observable<decimal> Price { get; set; }
+
+        public bool IsFor(string symbol)
+        {
+            return Symbol.Equals(symbol);
+        }
+
+        public void ChangePriceTo(decimal price)
+        {
+            Price.Value = price;
+        }
     }
 }
\ No newline at end of file

@@ -1,15 +1,17 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.Linq;
 using gorilla.infrastructure.threading;
 using gorilla.utility;
 using solidware.financials.infrastructure;
+using solidware.financials.infrastructure.eventing;
 using solidware.financials.messages;
 using solidware.financials.windows.ui.views.dialogs;
 
 namespace solidware.financials.windows.ui.presenters
 {
-    public class StockWatchPresenter : Presenter, TimerClient
+    public class StockWatchPresenter : Presenter, TimerClient, EventSubscriber<CurrentStockPrice>
     {
         UICommandBuilder builder;
         Timer timer;
@@ -17,11 +19,7 @@ namespace solidware.financials.windows.ui.presenters
 
         public StockWatchPresenter(UICommandBuilder builder, Timer timer)
         {
-            Stocks = new ObservableCollection<StockViewModel>
-                     {
-                         new StockViewModel {Symbol = "ARX.TO", Price = 25.00m.ToObservable()},
-                         new StockViewModel {Symbol = "TD.TO", Price = 85.00m.ToObservable()},
-                     };
+            Stocks = new ObservableCollection<StockViewModel>();
             this.builder = builder;
             this.timer = timer;
         }
@@ -41,6 +39,11 @@ namespace solidware.financials.windows.ui.presenters
             refresh_command.Execute(this);
         }
 
+        public void notify(CurrentStockPrice message)
+        {
+            Stocks.Single(x => x.IsFor(message.Symbol)).ChangePriceTo(message.Price);
+        }
+
         public class AddSymbolCommand : UICommand<StockWatchPresenter>
         {
             DialogLauncher launcher;

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using gorilla.infrastructure.threading;
 using Machine.Specifications;
 using Rhino.Mocks;
@@ -75,6 +76,28 @@ namespace specs.unit.ui.presenters
             static ObservableCommand refresh_command;
         }
 
+        public class when_a_stock_price_changes : concern
+        {
+            Establish context = () =>
+            {
+                sut.Stocks.Add(new StockViewModel
+                               {
+                                   Symbol = "ARX.TO",
+                                   Price = 20.00m.ToObservable()
+                               });
+            };
+
+            Because of = () =>
+            {
+                sut.notify(new CurrentStockPrice {Symbol = "ARX.TO", Price = 25.50m});
+            };
+
+            It should_display_the_new_price = () =>
+            {
+                sut.Stocks.Last().Price.Value.should_be_equal_to(25.50m);
+            };
+        }
+
         public class AddSymbolCommandSpecs
         {
             public class when_a_user_wants_to_watch_a_new_symbol

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+
+namespace specs
+{
+    static public class IllegalExtensions
+    {
+        static public void Add<T>(this IEnumerable<T> items, T item)
+        {
+            var collection = items as ICollection<T>;
+            if (null == collection) throw new ArgumentException("this aint a collection, buddy!");
+            collection.Add(item);
+        }
+    }
+}
\ No newline at end of file

@@ -108,6 +108,7 @@
     <Compile Include="unit\ui\presenters\AddFamilyMemberPresenterSpecs.cs" />
     <Compile Include="unit\ui\presenters\AddNewIncomeViewModelSpecs.cs" />
     <Compile Include="unit\ui\presenters\AddNewStockSymbolPresenterSpecs.cs" />
+    <Compile Include="IllegalExtensions.cs" />
     <Compile Include="unit\ui\presenters\specifications\IfFamilyMemberIsSelectedSpecs.cs" />
     <Compile Include="unit\ui\presenters\StockWatchPresenterSpecs.cs" />
     <Compile Include="unit\ui\RunInBackgroundInterceptorSpecs.cs" />