chrome/browser/chromeos/login/screens/eula_screen.h

   1 // Copyright (c) 2012 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_EULA_SCREEN_H_
   6 #define CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_H_
   7
   8 #include <string>
   9
  10 #include "base/compiler_specific.h"
  11 #include "chrome/browser/chromeos/login/screens/eula_screen_actor.h"
  12 #include "chrome/browser/chromeos/login/screens/wizard_screen.h"
  13 #include "chrome/browser/chromeos/login/tpm_password_fetcher.h"
  14 #include "url/gurl.h"
  15
  16 namespace chromeos {
  17
  18 // Representation independent class that controls OOBE screen showing EULA
  19 // to users.
  20 class EulaScreen : public WizardScreen,
  21                    public EulaScreenActor::Delegate,
  22                    public TpmPasswordFetcherDelegate {
  23  public:
  24   EulaScreen(ScreenObserver* observer, EulaScreenActor* actor);
  25   virtual ~EulaScreen();
  26
  27   // WizardScreen implementation:
  28   virtual void PrepareToShow() OVERRIDE;
  29   virtual void Show() OVERRIDE;
  30   virtual void Hide() OVERRIDE;
  31   virtual std::string GetName() const OVERRIDE;
  32
  33   // EulaScreenActor::Delegate implementation:
  34   virtual GURL GetOemEulaUrl() const OVERRIDE;
  35   virtual void OnExit(bool accepted, bool usage_stats_enabled) OVERRIDE;
  36   virtual void InitiatePasswordFetch() OVERRIDE;
  37   virtual bool IsUsageStatsEnabled() const OVERRIDE;
  38   virtual void OnActorDestroyed(EulaScreenActor* actor) OVERRIDE;
  39
  40   // TpmPasswordFetcherDelegate implementation:
  41   virtual void OnPasswordFetched(const std::string& tpm_password) OVERRIDE;
  42
  43  private:
  44   // URL of the OEM EULA page (on disk).
  45   GURL oem_eula_page_;
  46
  47   // TPM password local storage. By convention, we clear the password
  48   // from TPM as soon as we read it. We store it here locally until
  49   // EULA screen is closed.
  50   // TODO(glotov): Sanitize memory used to store password when
  51   // it's destroyed.
  52   std::string tpm_password_;
  53
  54   EulaScreenActor* actor_;
  55
  56   TpmPasswordFetcher password_fetcher_;
  57
  58   DISALLOW_COPY_AND_ASSIGN(EulaScreen);
  59 };
  60
  61 }  // namespace chromeos
  62
  63 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SCREENS_EULA_SCREEN_H_