Display message when project is not a repository

When the GitHub pane is open and the project is not a git repository,
display a (placeholder) message.

Author: grokys

src/GitHub.App/GitHub.App.csproj

@@ -198,6 +198,7 @@
     <Compile Include="ViewModels\BaseViewModel.cs" />
     <Compile Include="Models\ConnectionRepositoryHostMap.cs" />
     <Compile Include="ViewModels\GistCreationViewModel.cs" />
+    <Compile Include="ViewModels\NotAGitRepositoryViewModel.cs" />
     <Compile Include="ViewModels\NotAGitHubRepositoryViewModel.cs" />
     <Compile Include="ViewModels\LoggedOutViewModel.cs" />
     <Compile Include="ViewModels\LogoutRequiredViewModel.cs" />

src/GitHub.App/ViewModels/NotAGitRepositoryViewModel.cs

@@ -0,0 +1,19 @@
+using System;
+using System.ComponentModel.Composition;
+using GitHub.Exports;
+using GitHub.Models;
+using GitHub.Services;
+using GitHub.UI;
+using ReactiveUI;
+
+namespace GitHub.ViewModels
+{
+    /// <summary>
+    /// The view model for the "Not a Git repository" view in the GitHub pane.
+    /// </summary>
+    [ExportViewModel(ViewType = UIViewType.NotAGitRepository)]
+    [PartCreationPolicy(CreationPolicy.NonShared)]
+    public class NotAGitRepositoryViewModel : BaseViewModel, INotAGitRepositoryViewModel
+    {
+    }
+}

src/GitHub.Exports.Reactive/GitHub.Exports.Reactive.csproj

@@ -97,6 +97,7 @@
     <Compile Include="Services\IGistPublishService.cs" />
     <Compile Include="ViewModels\IGistCreationViewModel.cs" />
     <Compile Include="Services\NotificationDispatcher.cs" />
+    <Compile Include="ViewModels\INotAGitRepositoryViewModel.cs" />
     <Compile Include="ViewModels\INotAGitHubRepositoryViewModel.cs" />
     <Compile Include="ViewModels\ILoggedOutViewModel.cs" />
     <Compile Include="ViewModels\ILogoutRequiredViewModel.cs" />

src/GitHub.Exports.Reactive/ViewModels/INotAGitHubRepositoryViewModel.cs

@@ -1,6 +1,4 @@
-using System;
-using System.Reactive;
-using ReactiveUI;
+using ReactiveUI;
 
 namespace GitHub.ViewModels
 {

src/GitHub.Exports.Reactive/ViewModels/INotAGitRepositoryViewModel.cs

@@ -0,0 +1,10 @@
+namespace GitHub.ViewModels
+{
+    /// <summary>
+    /// Defines the view model for the "Not a git repository" view in the GitHub pane.
+    /// </summary>
+    [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Design", "CA1040:AvoidEmptyInterfaces")]
+    public interface INotAGitRepositoryViewModel : IViewModel
+    {
+    }
+}

src/GitHub.Exports/Exports/ExportMetadata.cs

@@ -26,6 +26,7 @@ public enum UIViewType
         LogoutRequired,
         GitHubPane,
         LoggedOut,
+        NotAGitRepository,
         NotAGitHubRepository,
     }
 

src/GitHub.VisualStudio.UI/Base/TeamExplorerItemBase.cs

@@ -8,6 +8,7 @@
 using GitHub.VisualStudio.Helpers;
 using NullGuard;
 using GitHub.ViewModels;
+using GitHub.VisualStudio.UI;
 
 namespace GitHub.VisualStudio.Base
 {
@@ -98,22 +99,41 @@ protected virtual void RepoChanged(bool changed)
             }
         }
 
-        protected async Task<bool> IsAGitHubRepo()
+        protected async Task<RepositoryOrigin> GetRepositoryOrigin()
         {
+            if (ActiveRepo == null)
+                return RepositoryOrigin.NonGitRepository;
+
             var uri = ActiveRepoUri;
             if (uri == null)
-                return false;
+                return RepositoryOrigin.Other;
 
             Debug.Assert(apiFactory != null, "apiFactory cannot be null. Did you call the right constructor?");
             SimpleApiClient = apiFactory.Create(uri);
 
             var isdotcom = HostAddress.IsGitHubDotComUri(uri.ToRepositoryUrl());
-            if (!isdotcom)
+
+            if (isdotcom)
+            {
+                return RepositoryOrigin.DotCom;
+            }
+            else
             {
                 var repo = await SimpleApiClient.GetRepository();
-                return (repo.FullName == ActiveRepoName || repo.Id == 0) && SimpleApiClient.IsEnterprise();
+
+                if ((repo.FullName == ActiveRepoName || repo.Id == 0) && SimpleApiClient.IsEnterprise())
+                {
+                    return RepositoryOrigin.Enterprise;
+                }
             }
-            return isdotcom;
+
+            return RepositoryOrigin.Other;
+        }
+
+        protected async Task<bool> IsAGitHubRepo()
+        {
+            var origin = await GetRepositoryOrigin();
+            return origin == RepositoryOrigin.DotCom || origin == RepositoryOrigin.Enterprise;
         }
 
         bool disposed;

src/GitHub.VisualStudio.UI/GitHub.VisualStudio.UI.csproj

@@ -79,6 +79,7 @@
     <Compile Include="Base\TeamExplorerItemBase.cs" />
     <Compile Include="Colors.cs" />
     <Compile Include="Constants.cs" />
+    <Compile Include="RepositoryOrigin.cs" />
     <Compile Include="Resources.Designer.cs">
       <DependentUpon>Resources.resx</DependentUpon>
       <AutoGen>True</AutoGen>

src/GitHub.VisualStudio.UI/RepositoryOrigin.cs

@@ -0,0 +1,10 @@
+namespace GitHub.VisualStudio.UI
+{
+    public enum RepositoryOrigin
+    {
+        DotCom,
+        Enterprise,
+        Other,
+        NonGitRepository,
+    }
+}

src/GitHub.VisualStudio/GitHub.VisualStudio.csproj

@@ -274,6 +274,9 @@
       <DependentUpon>GitHubPaneView.xaml</DependentUpon>
     </Compile>
     <Compile Include="UI\Views\GitHubPaneViewModel.cs" />
+    <Compile Include="UI\Views\NotAGitRepositoryView.xaml.cs">
+      <DependentUpon>NotAGitRepositoryView.xaml</DependentUpon>
+    </Compile>
     <Compile Include="UI\Views\NotAGitHubRepositoryView.xaml.cs">
       <DependentUpon>NotAGitHubRepositoryView.xaml</DependentUpon>
     </Compile>
@@ -472,6 +475,10 @@
       <SubType>Designer</SubType>
       <Generator>MSBuild:Compile</Generator>
     </Page>
+    <Page Include="UI\Views\NotAGitRepositoryView.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
     <Page Include="UI\Views\NotAGitHubRepositoryView.xaml">
       <Generator>MSBuild:Compile</Generator>
       <SubType>Designer</SubType>