bitbucket-ui: add Bitbucket Windows UI

Add a port of the Bitbucket UI from the old GCM for Windows, and update
the UI to git with the new refreshed design.

Author: mjcheetham

src/shared/Microsoft.Git.CredentialManager/EnsureArgument.cs

@@ -6,7 +6,7 @@ namespace Microsoft.Git.CredentialManager
 {
     public static class EnsureArgument
     {
-        public static void NotNull<T>(T arg, string name) where T : class
+        public static void NotNull<T>(T arg, string name)
         {
             if (arg is null)
             {

src/windows/Atlassian.Bitbucket.UI.Windows/Atlassian.Bitbucket.UI.Windows.csproj

@@ -18,4 +18,34 @@
     <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Remove="Images\[email protected]" />
+    <None Remove="Images\Bitbucket-16x16.ico" />
+    <None Remove="Images\error.png" />
+    <Resource Include="Images\[email protected]" />
+    <Resource Include="Images\Bitbucket-16x16.ico" />
+    <Resource Include="Images\error.png" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Compile Update="BitbucketResources.Designer.cs">
+      <DesignTime>True</DesignTime>
+      <AutoGen>True</AutoGen>
+      <DependentUpon>BitbucketResources.resx</DependentUpon>
+    </Compile>
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Update="BitbucketResources.resx">
+      <Generator>PublicResXFileCodeGenerator</Generator>
+      <LastGenOutput>BitbucketResources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+  </ItemGroup>
+
+  <ItemGroup>
+    <Page Update="Styles.xaml">
+      <Generator>MSBuild:Compile</Generator>
+    </Page>
+  </ItemGroup>
+
 </Project>

src/windows/Atlassian.Bitbucket.UI.Windows/AuthenticationPrompts.cs

@@ -1,5 +1,7 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT license.
+using Atlassian.Bitbucket.UI.Controls;
+using Atlassian.Bitbucket.UI.ViewModels;
 using Microsoft.Git.CredentialManager.UI;
 
 namespace Atlassian.Bitbucket.UI
@@ -15,13 +17,24 @@ public AuthenticationPrompts(IGui gui)
 
         public bool ShowCredentialsPrompt(ref string username, out string password)
         {
-            password = null;
-            return false;
+            // If there is a user in the remote URL then populate the UI with it.
+            var credentialViewModel = new CredentialsViewModel(username);
+
+            bool credentialValid = _gui.ShowDialogWindow(credentialViewModel, () => new CredentialsControl());
+
+            username = credentialViewModel.Login;
+            password = credentialViewModel.Password.ToUnsecureString();
+
+            return credentialValid;
         }
 
         public bool ShowOAuthPrompt()
         {
-            return false;
+            var oauthViewModel = new OAuthViewModel();
+
+            bool useOAuth = _gui.ShowDialogWindow(oauthViewModel, () => new OAuthControl());
+
+            return useOAuth;
         }
     }
 }