src/chrome/browser/chromeos/login/screens/terms_of_service_screen.h

   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/base_screen.h"
  13 #include "chrome/browser/chromeos/login/screens/terms_of_service_screen_actor.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 BaseScreenDelegate;
  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 BaseScreen,
  29                              public TermsOfServiceScreenActor::Delegate,
  30                              public net::URLFetcherDelegate {
  31  public:
  32   TermsOfServiceScreen(BaseScreenDelegate* base_screen_delegate,
  33                        TermsOfServiceScreenActor* actor);
  34   virtual ~TermsOfServiceScreen();
  35
  36   // BaseScreen:
  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_