1// Copyright 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_APP_MODE_STARTUP_APP_LAUNCHER_H_
6#define CHROME_BROWSER_CHROMEOS_APP_MODE_STARTUP_APP_LAUNCHER_H_
7
8#include <string>
9
10#include "base/basictypes.h"
11#include "base/memory/ref_counted.h"
12#include "base/memory/weak_ptr.h"
13#include "chrome/browser/chromeos/app_mode/kiosk_app_launch_error.h"
14#include "chrome/browser/chromeos/app_mode/kiosk_app_manager_observer.h"
15#include "chrome/browser/extensions/install_observer.h"
16#include "google_apis/gaia/oauth2_token_service.h"
17
18class Profile;
19
20namespace chromeos {
21
22// Launches the app at startup. The flow roughly looks like this:
23// First call Initialize():
24// - Attempts to load oauth token file. Stores the loaded tokens in
25//   |auth_params_|.
26// - Initialize token service and inject |auth_params_| if needed.
27// - Initialize network if app is not installed or not offline_enabled.
28// - If network is online, install or update the app as needed.
29// - After the app is installed/updated, launch it and finish the flow;
30// Report OnLauncherInitialized() or OnLaunchFailed() to observers:
31// - If all goes good, launches the app and finish the flow;
32class StartupAppLauncher : public base::SupportsWeakPtr<StartupAppLauncher>,
33                           public OAuth2TokenService::Observer,
34                           public extensions::InstallObserver,
35                           public KioskAppManagerObserver {
36 public:
37  class Delegate {
38   public:
39    // Invoked to perform actual network initialization work. Note the app
40    // launch flow is paused until ContinueWithNetworkReady is called.
41    virtual void InitializeNetwork() = 0;
42
43    // Returns true if Internet is online.
44    virtual bool IsNetworkReady() = 0;
45
46    virtual void OnLoadingOAuthFile() = 0;
47    virtual void OnInitializingTokenService() = 0;
48    virtual void OnInstallingApp() = 0;
49    virtual void OnReadyToLaunch() = 0;
50    virtual void OnLaunchSucceeded() = 0;
51    virtual void OnLaunchFailed(KioskAppLaunchError::Error error) = 0;
52    virtual bool IsShowingNetworkConfigScreen() = 0;
53
54   protected:
55    virtual ~Delegate() {}
56  };
57
58  StartupAppLauncher(Profile* profile,
59                     const std::string& app_id,
60                     bool diagnostic_mode,
61                     Delegate* delegate);
62
63  virtual ~StartupAppLauncher();
64
65  // Prepares the environment for an app launch.
66  void Initialize();
67
68  // Continues the initialization after network is ready.
69  void ContinueWithNetworkReady();
70
71  // Launches the app after the initialization is successful.
72  void LaunchApp();
73
74  // Restarts launcher;
75  void RestartLauncher();
76
77 private:
78  // OAuth parameters from /home/chronos/kiosk_auth file.
79  struct KioskOAuthParams {
80    std::string refresh_token;
81    std::string client_id;
82    std::string client_secret;
83  };
84
85  void OnLaunchSuccess();
86  void OnLaunchFailure(KioskAppLaunchError::Error error);
87
88  // Callbacks from ExtensionUpdater.
89  void OnUpdateCheckFinished();
90
91  void BeginInstall();
92  void OnReadyToLaunch();
93  void UpdateAppData();
94
95  void InitializeTokenService();
96  void MaybeInitializeNetwork();
97  void MaybeLaunchApp();
98
99  void StartLoadingOAuthFile();
100  static void LoadOAuthFileOnBlockingPool(KioskOAuthParams* auth_params);
101  void OnOAuthFileLoaded(KioskOAuthParams* auth_params);
102
103  void OnKioskAppDataLoadStatusChanged(const std::string& app_id);
104
105  // OAuth2TokenService::Observer overrides.
106  virtual void OnRefreshTokenAvailable(const std::string& account_id) OVERRIDE;
107  virtual void OnRefreshTokensLoaded() OVERRIDE;
108
109  // extensions::InstallObserver overrides.
110  virtual void OnFinishCrxInstall(const std::string& extension_id,
111                                  bool success) OVERRIDE;
112
113  // KioskAppManagerObserver overrides.
114  virtual void OnKioskExtensionLoadedInCache(
115      const std::string& app_id) OVERRIDE;
116  virtual void OnKioskExtensionDownloadFailed(
117      const std::string& app_id) OVERRIDE;
118
119  Profile* profile_;
120  const std::string app_id_;
121  const bool diagnostic_mode_;
122  Delegate* delegate_;
123  bool network_ready_handled_;
124  int launch_attempt_;
125  bool ready_to_launch_;
126  bool wait_for_crx_update_;
127
128  KioskOAuthParams auth_params_;
129
130  DISALLOW_COPY_AND_ASSIGN(StartupAppLauncher);
131};
132
133}  // namespace chromeos
134
135#endif  // CHROME_BROWSER_CHROMEOS_APP_MODE_STARTUP_APP_LAUNCHER_H_
136