terms_of_service_screen.h revision eb525c5499e34cc9c4b825d6d9e75bb07cc06ace 
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
16namespace net {
17class URLFetcher;
18}
19
20namespace chromeos {
21
22class 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.
28class 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