[Chrome OS] Infrastucture for doing offline/online login simultaneously

chrome/browser/chromeos/login/online_attempt.h

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROME_BROWSER_CHROMEOS_LOGIN_ONLINE_ATTEMPT_H_
+#define CHROME_BROWSER_CHROMEOS_LOGIN_ONLINE_ATTEMPT_H_
+#pragma once
+
+#include <string>
+
+
+#include "base/ref_counted.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/chrome_thread.h"
+#include "chrome/browser/chromeos/login/login_status_consumer.h"
+#include "chrome/common/net/gaia/gaia_auth_consumer.h"
+#include "chrome/common/net/gaia/google_service_auth_error.h"
+
+class GaiaAuthenticator2;
+class Profile;
+
+namespace chromeos {
+class AuthAttemptState;
+class AuthAttemptStateResolver;
+
+class OnlineAttempt
+    : public base::RefCountedThreadSafe<OnlineAttempt>,
+      public GaiaAuthConsumer {
+ public:
+  OnlineAttempt(AuthAttemptState* current_attempt,
+                AuthAttemptStateResolver* callback);
+  virtual ~OnlineAttempt();
+
+  // Initiate the online login attempt.  Status will be recorded in
+  // |current_attempt|, and resolver_->Resolve() will be called on the
+  // IO thread when useful state is available.
+  void Initiate(Profile* profile);
+
+  // Callbacks from GaiaAuthenticator2
+  virtual void OnClientLoginFailure(
+      const GoogleServiceAuthError& error);
+  virtual void OnClientLoginSuccess(
+      const GaiaAuthConsumer::ClientLoginResult& credentials);
+
+ private:
+  // Milliseconds until we timeout our attempt to hit ClientLogin.
+  static const int kClientLoginTimeoutMs;
+
+  void TryClientLogin();
+  void CancelClientLogin();
+
+  void TriggerResolve(const GaiaAuthConsumer::ClientLoginResult& credentials,
+                      const LoginFailure& outcome);
+
+  AuthAttemptState* const attempt_;
+  AuthAttemptStateResolver* const resolver_;
+
+  // Handles all net communications with Gaia.
+  scoped_ptr<GaiaAuthenticator2> gaia_authenticator_;
+  CancelableTask* fetch_canceler_;
+
+  // Whether we're willing to re-try the ClientLogin attempt.
+  bool try_again_;
+
+  friend class OnlineAttemptTest;
+  DISALLOW_COPY_AND_ASSIGN(OnlineAttempt);
+};
+
+}  // namespace chromeos
+
+#endif  // CHROME_BROWSER_CHROMEOS_LOGIN_ONLINE_ATTEMPT_H_