From 42436b1ab22f7c4f39dd4a51f702a70e6803b140 Mon Sep 17 00:00:00 2001
From: Pavel Samarkin <samarkinpa@gmail.com>
Date: Wed, 22 Jul 2015 23:22:30 -0700
Subject: [PATCH] Dumb dependency tree implementation

---
 AssemblyInfo.Common/AssemblyDependency.cs |  6 ++++++
 AssemblyInfo.Common/AssemblyProber.cs     | 15 +++++++++++++--
 AssemblyInfo/MainWindow.xaml              |  6 +++---
 3 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/AssemblyInfo.Common/AssemblyDependency.cs b/AssemblyInfo.Common/AssemblyDependency.cs
index ffd5ad9..b1a5611 100644
--- a/AssemblyInfo.Common/AssemblyDependency.cs
+++ b/AssemblyInfo.Common/AssemblyDependency.cs
@@ -11,6 +11,7 @@ public class AssemblyDependency
 		private readonly string _resolvedName;
 		private readonly bool _redirected;
 		private readonly string _resolvedDifference;
+		private AssemblyProber _assemblyProber;
 
 		public AssemblyDependency(string displayName, bool satisfied, string resolvedName)
 		{
@@ -60,5 +61,10 @@ public string ResolvedDifference
 		{
 			get { return _resolvedDifference; }
 		}
+
+		public AssemblyProber Assembly
+		{
+			get { return _assemblyProber ?? (_assemblyProber = AssemblyProber.Create(_displayName, true)); }
+		}
 	}
 }
\ No newline at end of file
diff --git a/AssemblyInfo.Common/AssemblyProber.cs b/AssemblyInfo.Common/AssemblyProber.cs
index 36df7f3..8d00ef2 100644
--- a/AssemblyInfo.Common/AssemblyProber.cs
+++ b/AssemblyInfo.Common/AssemblyProber.cs
@@ -50,9 +50,18 @@ public class AssemblyProber
 		private bool? _debug;
 
 		private readonly ErrorLevel _errorLevel;
-		
+
+		private static readonly Dictionary<Tuple<string, bool>, AssemblyProber> AssemblyCache = new Dictionary<Tuple<string, bool>, AssemblyProber>(); 
+
 		public static AssemblyProber Create(string name, bool isAssemblyName = false)
 		{
+			var arg = new Tuple<string, bool>(name, isAssemblyName);
+			AssemblyProber result;
+			if (AssemblyCache.TryGetValue(arg, out result))
+			{
+				return result;
+			}
+
 			AppDomainSetup setup = new AppDomainSetup
 			{
 				ApplicationBase = isAssemblyName || string.IsNullOrWhiteSpace(name)
@@ -62,7 +71,9 @@ public static AssemblyProber Create(string name, bool isAssemblyName = false)
 			AppDomain tmpDomain = AppDomain.CreateDomain("Temporary AssemblyProber domain", null, setup);
 			try
 			{
-				return tmpDomain.CreateInstanceUsingPrivateConstructor<AssemblyProber>(name, isAssemblyName);
+				result = tmpDomain.CreateInstanceUsingPrivateConstructor<AssemblyProber>(name, isAssemblyName);
+				AssemblyCache[arg] = result;
+				return result;
 			}
 			finally
 			{
diff --git a/AssemblyInfo/MainWindow.xaml b/AssemblyInfo/MainWindow.xaml
index 76b3a42..04c1e40 100644
--- a/AssemblyInfo/MainWindow.xaml
+++ b/AssemblyInfo/MainWindow.xaml
@@ -66,7 +66,7 @@
 			<!-- TODO: Investigate posibility of a memory leak -->
 			<EventSetter Event="MouseDoubleClick" Handler="OnDependencySelected"/>
 		</Style>
-		<DataTemplate x:Key="DependencyTemplate" DataType="Common:AssemblyDependency">
+		<HierarchicalDataTemplate x:Key="DependencyTemplate" DataType="Common:AssemblyDependency" ItemsSource="{Binding Assembly.Dependencies}">
 			<StackPanel Orientation="Horizontal">
 				<TextBlock Text="{Binding DisplayName}">
 					<TextBlock.Style>
@@ -107,7 +107,7 @@
 				<TextBlock Text="->" Margin="5 0" Visibility="{Binding Path=Redirected, Converter={StaticResource BooleanToVisibilityConverter}}"/>
 				<TextBlock Text="{Binding ResolvedDifference}" Visibility="{Binding Path=Redirected, Converter={StaticResource BooleanToVisibilityConverter}}"/>
 			</StackPanel>
-		</DataTemplate>
+		</HierarchicalDataTemplate>
 	</Window.Resources>
 	<Grid>
 		<Grid.RowDefinitions>
@@ -144,6 +144,6 @@
 		<TextBlock Grid.Row="7" Grid.Column="0" Text="Product version:"/>
 		<TextBlock Grid.Row="7" Grid.Column="1" Padding="0 5 5 5" Text="{Binding ProductVersion, TargetNullValue='&lt;Unknown&gt;'}"/>
 		<TextBlock Style="{StaticResource HideOnAnyErrorStyle}" TextWrapping="WrapWithOverflow" Padding="5" Grid.Row="8" Grid.Column="0" Text="Dependencies:"/>
-		<ListView Style="{StaticResource HideOnAnyErrorStyle}" Grid.Row="9" Grid.Column="0" Grid.ColumnSpan="2" ItemsSource="{Binding Dependencies}" ItemTemplate="{StaticResource DependencyTemplate}"/>
+		<TreeView Style="{StaticResource HideOnAnyErrorStyle}" Grid.Row="9" Grid.Column="0" Grid.ColumnSpan="2" ItemsSource="{Binding Dependencies}" ItemTemplate="{StaticResource DependencyTemplate}"/>
 	</Grid>
 </Window>