Issue 471: Support WP8.1

Src/GoogleApis.Auth.WP81/OAuth2/AuthorizationCodeWPInstalledApp.cs

+/*
+Copyright 2014 Google Inc
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+using System;
+using System.Threading;
+using System.Threading.Tasks;
+
+using Google.Apis.Auth.OAuth2.Flows;
+
+namespace Google.Apis.Auth.OAuth2
+{
+/// <summary>
+/// OAuth 2.0 authorization code flow for a Windows Phone 8.1 installed appl
ication that persists end-user
+/// credentials.
+/// <remarks>
+/// This installed app class uses an internal <see cref="AuthorizationCodeIn
stalledApp"/> with a
+/// <see cref="Google.Apis.Auth.OAuth2.AuthorizationCodeBroker"/> for retrie
ving the authorization code.·
+/// </remarks>
+/// </summary>
+public sealed class AuthorizationCodeWPInstalledApp : IAuthorizationCodeInst
alledApp
+{
+private readonly IAuthorizationCodeInstalledApp innerInstallApp;
+
+/// <summary>
+/// Constructs a new authorization code for Windows Store application ta
rgeting an installed application flow.
+/// </summary>
+/// <param name="authorizationCodeFlowInitializer">An authorization code
flow initializer.</param>
+public AuthorizationCodeWPInstalledApp(AuthorizationCodeFlow.Initializer
authorizationCodeFlowInitializer)
+{
+innerInstallApp = new AuthorizationCodeInstalledApp(
+new AuthorizationCodeFlow(authorizationCodeFlowInitializer), new
AuthorizationCodeBroker());
+}
+
+/// <summary>
+/// Constructs a new authorization code for Windows Store application ta
rgeting an installed application flow.
+/// </summary>
+/// <param name="flow">An authorization code flow.</param>
+public AuthorizationCodeWPInstalledApp(IAuthorizationCodeFlow flow)
+{
+innerInstallApp = new AuthorizationCodeInstalledApp(flow, new Author
izationCodeBroker());
+}
+
+#region IAuthorizationCodeInstalledApp Members
+
+public IAuthorizationCodeFlow Flow
+{
+get { return innerInstallApp.Flow; }
+}
+
+public ICodeReceiver CodeReceiver
+{
+get { return innerInstallApp.CodeReceiver; }
+}
+
+public async Task<UserCredential> AuthorizeAsync(string userId, Cancella
tionToken taskCancellationToken)
+{
+return await innerInstallApp.AuthorizeAsync(userId, taskCancellation
Token).ConfigureAwait(false);
+}
+
+#endregion
+}
+}