Commit 5997656

@@ -7,11 +7,11 @@ namespace solidware.financials.windows.ui.presenters
         public StockViewModel(string symbol)
         {
             Symbol = symbol;
-            Price = 0m.ToObservable();
+            Price = Money.Null;
         }
 
         public string Symbol { get; set; }
-        public Observable<decimal> Price { get; set; }
+        public Observable<Money> Price { get; set; }
 
         public bool IsFor(string symbol)
         {

@@ -29,7 +29,7 @@ namespace solidware.financials.windows.ui.presenters
 
         public void present()
         {
-            timer.start_notifying(this, new TimeSpan(0, 1, 0));
+            timer.start_notifying(this, new TimeSpan(0, 0, 10));
             AddSymbol = builder.build<AddSymbolCommand>(this);
             refresh_command = builder.build<RefreshStockPricesCommand>(this);
         }

@@ -41,7 +41,11 @@ namespace solidware.financials.windows.ui.views
         public void region<Region>(Action<Region> configure) where Region : UIElement
         {
             ensure_that_the_region_exists<Region>();
-            configure(regions[typeof (Region)].downcast_to<Region>());
+            Action action = () =>
+            {
+                configure(regions[typeof (Region)].downcast_to<Region>());
+            };
+            Dispatcher.BeginInvoke(action);
         }
 
         public void region<Region>(Configuration<Region> configuration) where Region : UIElement

@@ -6,7 +6,7 @@
 				<DataTemplate>
 					<DockPanel>
 						<Label Content="{Binding Path=Symbol}" DockPanel.Dock="Left" Width="90"></Label>
-						<Label Content="{Binding Path=Price}" DockPanel.Dock="Right" HorizontalAlignment="Right" HorizontalContentAlignment="Right"></Label>
+						<Label Content="{Binding Path=Price.Value}" DockPanel.Dock="Right" HorizontalAlignment="Right" HorizontalContentAlignment="Right"></Label>
 					</DockPanel>
 				</DataTemplate>
 			</ListView.ItemTemplate>

@@ -7,5 +7,10 @@ namespace solidware.financials.messages
     {
         public string Symbol { get; set; }
         public decimal Price { get; set; }
+
+        public override string ToString()
+        {
+            return "{0}: {1:C}".format(Symbol, Price);
+        }
     }
 }
\ No newline at end of file

@@ -6,5 +6,10 @@ namespace solidware.financials.messages
     public class StartWatchingSymbol : ValueType<StartWatchingSymbol>, Event
     {
         public string Symbol { get; set; }
+
+        public override string ToString()
+        {
+            return "I will start watching {0}".format(Symbol);
+        }
     }
 }
\ No newline at end of file

@@ -1,4 +1,6 @@
-namespace solidware.financials.service.handlers
+using System;
+
+namespace solidware.financials.service.handlers
 {
     public interface StockPriceLookupService
     {
@@ -9,7 +11,7 @@
     {
         public decimal FindPriceFor(string symbol)
         {
-            return 24.00m;
+            return Convert.ToDecimal(new Random().NextDouble());
         }
     }
 }
\ No newline at end of file

@@ -82,7 +82,7 @@ namespace specs.unit.ui.presenters
             {
                 sut.Stocks.Add(new StockViewModel(symbol:"ARX.TO")
                                {
-                                   Price = 20.00m.ToObservable()
+                                   Price = new Money(20.00m).ToObservable(),
                                });
             };
 
@@ -93,7 +93,7 @@ namespace specs.unit.ui.presenters
 
             It should_display_the_new_price = () =>
             {
-                sut.Stocks.Last().Price.Value.should_be_equal_to(25.50m);
+                sut.Stocks.Last().Price.Value.should_be_equal_to(new Money(25.50m));
             };
         }