eula_screen.h revision 03b57e008b61dfcb1fbad3aea950ae0e001748b0 
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 "chromeos/tpm_password_fetcher.h"
14#include "url/gurl.h"
15
16namespace chromeos {
17
18// Representation independent class that controls OOBE screen showing EULA
19// to users.
20class 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_
64