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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_AUTHENTICATED_USER_EMAIL_RETRIEVER_H_
      6 #define CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_AUTHENTICATED_USER_EMAIL_RETRIEVER_H_
      7 
      8 #include <string>
      9 
     10 #include "base/basictypes.h"
     11 #include "base/callback.h"
     12 #include "base/compiler_specific.h"
     13 #include "base/memory/ref_counted.h"
     14 #include "google_apis/gaia/gaia_auth_consumer.h"
     15 #include "google_apis/gaia/gaia_auth_fetcher.h"
     16 
     17 class GaiaAuthFetcher;
     18 
     19 namespace net {
     20 class URLRequestContextGetter;
     21 }
     22 
     23 namespace chromeos {
     24 
     25 // Helper class that retrieves the authenticated user's e-mail address.
     26 class AuthenticatedUserEmailRetriever : public GaiaAuthConsumer {
     27  public:
     28   typedef base::Callback<void(const std::string&)>
     29       AuthenticatedUserEmailCallback;
     30 
     31   // Retrieves the authenticated user's e-mail address from GAIA and passes it
     32   // to |callback|. Requires that |url_request_context_getter| contain the GAIA
     33   // cookies for exactly one user. If the e-mail address cannot be retrieved, an
     34   // empty string is passed to the |callback|.
     35   AuthenticatedUserEmailRetriever(
     36       const AuthenticatedUserEmailCallback& callback,
     37       scoped_refptr<net::URLRequestContextGetter> url_request_context_getter);
     38   virtual ~AuthenticatedUserEmailRetriever();
     39 
     40   // GaiaAuthConsumer:
     41   virtual void OnListAccountsSuccess(const std::string& data) OVERRIDE;
     42   virtual void OnListAccountsFailure(const GoogleServiceAuthError& error)
     43       OVERRIDE;
     44 
     45  private:
     46   const AuthenticatedUserEmailCallback callback_;
     47   GaiaAuthFetcher gaia_auth_fetcher_;
     48 
     49   DISALLOW_COPY_AND_ASSIGN(AuthenticatedUserEmailRetriever);
     50 };
     51 
     52 }  // namespace chromeos
     53 
     54 #endif  // CHROME_BROWSER_UI_WEBUI_CHROMEOS_LOGIN_AUTHENTICATED_USER_EMAIL_RETRIEVER_H_
     55