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      1 // Copyright (c) 2013 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_CHROMEOS_LOGIN_SCREENS_TERMS_OF_SERVICE_SCREEN_H_
      6 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_TERMS_OF_SERVICE_SCREEN_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/compiler_specific.h"
     10 #include "base/memory/scoped_ptr.h"
     11 #include "base/timer/timer.h"
     12 #include "chrome/browser/chromeos/login/screens/terms_of_service_screen_actor.h"
     13 #include "chrome/browser/chromeos/login/screens/wizard_screen.h"
     14 #include "net/url_request/url_fetcher_delegate.h"
     15 
     16 namespace net {
     17 class URLFetcher;
     18 }
     19 
     20 namespace chromeos {
     21 
     22 class ScreenObserver;
     23 
     24 // A screen that shows Terms of Service which have been configured through
     25 // policy. The screen is shown during login and requires the user to accept the
     26 // Terms of Service before proceeding. Currently, Terms of Service are available
     27 // for public sessions only.
     28 class TermsOfServiceScreen : public WizardScreen,
     29                              public TermsOfServiceScreenActor::Delegate,
     30                              public net::URLFetcherDelegate {
     31  public:
     32   TermsOfServiceScreen(ScreenObserver* screen_observer,
     33                        TermsOfServiceScreenActor* actor);
     34   virtual ~TermsOfServiceScreen();
     35 
     36   // WizardScreen:
     37   virtual void PrepareToShow() OVERRIDE;
     38   virtual void Show() OVERRIDE;
     39   virtual void Hide() OVERRIDE;
     40   virtual std::string GetName() const OVERRIDE;
     41 
     42   // TermsOfServiceScreenActor::Delegate:
     43   virtual void OnDecline() OVERRIDE;
     44   virtual void OnAccept() OVERRIDE;
     45   virtual void OnActorDestroyed(TermsOfServiceScreenActor* actor) OVERRIDE;
     46 
     47  private:
     48   // Start downloading the Terms of Service.
     49   void StartDownload();
     50 
     51   // Abort the attempt to download the Terms of Service if it takes too long.
     52   void OnDownloadTimeout();
     53 
     54   // net::URLFetcherDelegate:
     55   virtual void OnURLFetchComplete(const net::URLFetcher* source) OVERRIDE;
     56 
     57   TermsOfServiceScreenActor* actor_;
     58 
     59   scoped_ptr<net::URLFetcher> terms_of_service_fetcher_;
     60 
     61   // Timer that enforces a custom (shorter) timeout on the attempt to download
     62   // the Terms of Service.
     63   base::OneShotTimer<TermsOfServiceScreen> download_timer_;
     64 
     65   DISALLOW_COPY_AND_ASSIGN(TermsOfServiceScreen);
     66 };
     67 
     68 }  // namespace chromeos
     69 
     70 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_TERMS_OF_SERVICE_SCREEN_H_
     71