OLD | NEW |
| (Empty) |
1 // Copyright (c) 2011 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_FRAME_READY_MODE_INTERNAL_REGISTRY_READY_MODE_STATE_H_ | |
6 #define CHROME_FRAME_READY_MODE_INTERNAL_REGISTRY_READY_MODE_STATE_H_ | |
7 | |
8 #include <string> | |
9 | |
10 #include "base/basictypes.h" | |
11 #include "base/memory/scoped_ptr.h" | |
12 #include "base/time/time.h" | |
13 #include "chrome_frame/ready_mode/internal/ready_mode_state.h" | |
14 | |
15 // Defines the possible Ready Mode states. | |
16 enum ReadyModeStatus { | |
17 // Chrome Frame is permanently disabled and should be uninstalled. | |
18 READY_MODE_PERMANENTLY_DECLINED, | |
19 // Chrome Frame is temporarily disabled. | |
20 READY_MODE_TEMPORARILY_DECLINED, | |
21 // Chrome Frame is disabled, but should be enabled by calling | |
22 // ExpireTemporaryDecline(). | |
23 READY_MODE_TEMPORARY_DECLINE_EXPIRED, | |
24 // Chrome Frame is enabled, but not permanently (the user should be prompted). | |
25 READY_MODE_ACTIVE, | |
26 // Chrome Frame is permanently enabled. | |
27 READY_MODE_ACCEPTED | |
28 }; | |
29 | |
30 // Implements ReadyModeState, reading state from the Registry and delegating | |
31 // to the installer to effect state changes. | |
32 // | |
33 // If the current process is running at high integrity the installer is | |
34 // launched directly. Otherwise, it is launched by invoking a helper exe | |
35 // (chrome_launcher) at medium integrity (thanks to an elevation policy) that, | |
36 // in turn, delegates to Omaha's ProcessLauncher to reach high integrity. | |
37 class RegistryReadyModeState : public ReadyModeState { | |
38 public: | |
39 // Receives notification when the Ready Mode state changes in response to a | |
40 // user interaction. Does not receive notification when a temporary decline of | |
41 // Ready Mode expires. | |
42 class Observer { | |
43 public: | |
44 virtual ~Observer() {} | |
45 // Indicates that a state change has occurred, passing the new status. | |
46 virtual void OnStateChange(ReadyModeStatus status) = 0; | |
47 }; | |
48 | |
49 // Constructs an instance backed by the specified key (pre-existing under | |
50 // HKCU or HKLM). The provided duration indicates how long, after a temporary | |
51 // decline, Ready Mode re-activates. | |
52 // | |
53 // Takes ownership of the Observer instance, which may be null if the client | |
54 // does not need to be notified of changes. | |
55 RegistryReadyModeState(const std::wstring& key_name, | |
56 base::TimeDelta temporary_decline_duration, | |
57 Observer* observer); | |
58 virtual ~RegistryReadyModeState(); | |
59 | |
60 // Returns the current Ready Mode status. | |
61 ReadyModeStatus GetStatus(); | |
62 | |
63 // Transitions from temporarily declined to active Ready Mode. | |
64 void ExpireTemporaryDecline(); | |
65 | |
66 // ReadyModeState implementation | |
67 virtual void TemporarilyDeclineChromeFrame(); | |
68 virtual void PermanentlyDeclineChromeFrame(); | |
69 virtual void AcceptChromeFrame(); | |
70 | |
71 protected: | |
72 // Allows dependency replacement via derivation for tests. | |
73 virtual base::Time GetNow(); | |
74 | |
75 private: | |
76 // Sends the result of GetStatus() to our observer. | |
77 void NotifyObserver(); | |
78 // Retrieves state from the registry. Returns true upon success. | |
79 bool GetStateFromRegistry(int64* value, bool* exists); | |
80 // Refreshes the process state after mutating installation state. | |
81 void RefreshStateAndNotify(); | |
82 | |
83 base::TimeDelta temporary_decline_duration_; | |
84 std::wstring key_name_; | |
85 scoped_ptr<Observer> observer_; | |
86 | |
87 DISALLOW_COPY_AND_ASSIGN(RegistryReadyModeState); | |
88 }; | |
89 | |
90 #endif // CHROME_FRAME_READY_MODE_INTERNAL_REGISTRY_READY_MODE_STATE_H_ | |
OLD | NEW |