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1 // Copyright 2014 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 EXTENSIONS_BROWSER_API_POWER_POWER_API_MANAGER_H_ | |
6 #define EXTENSIONS_BROWSER_API_POWER_POWER_API_MANAGER_H_ | |
7 | |
8 #include <map> | |
9 #include <string> | |
10 | |
11 #include "base/callback.h" | |
12 #include "base/memory/scoped_ptr.h" | |
13 #include "content/public/browser/power_save_blocker.h" | |
14 #include "extensions/browser/browser_context_keyed_api_factory.h" | |
15 #include "extensions/browser/extension_registry_observer.h" | |
16 #include "extensions/common/api/power.h" | |
17 | |
18 namespace content { | |
19 class BrowserContext; | |
20 } | |
21 | |
22 namespace extensions { | |
23 | |
24 // Handles calls made via the chrome.power API. There is a separate instance of | |
25 // this class for each profile, as requests are tracked by extension ID, but a | |
26 // regular and incognito profile will share the same instance. | |
27 // TODO(derat): Move this to power_api.h and rename it to PowerApi. | |
28 class PowerApiManager : public BrowserContextKeyedAPI, | |
29 public extensions::ExtensionRegistryObserver { | |
30 public: | |
31 typedef base::Callback<scoped_ptr<content::PowerSaveBlocker>( | |
32 content::PowerSaveBlocker::PowerSaveBlockerType, | |
33 content::PowerSaveBlocker::Reason, | |
34 const std::string&)> CreateBlockerFunction; | |
35 | |
36 static PowerApiManager* Get(content::BrowserContext* context); | |
37 | |
38 // BrowserContextKeyedAPI implementation. | |
39 static BrowserContextKeyedAPIFactory<PowerApiManager>* GetFactoryInstance(); | |
40 | |
41 // Adds an extension lock at |level| for |extension_id|, replacing the | |
42 // extension's existing lock, if any. | |
43 void AddRequest(const std::string& extension_id, | |
44 core_api::power::Level level); | |
45 | |
46 // Removes an extension lock for an extension. Calling this for an | |
47 // extension id without a lock will do nothing. | |
48 void RemoveRequest(const std::string& extension_id); | |
49 | |
50 // Replaces the function that will be called to create PowerSaveBlocker | |
51 // objects. Passing an empty callback will revert to the default. | |
52 void SetCreateBlockerFunctionForTesting(CreateBlockerFunction function); | |
53 | |
54 // Overridden from extensions::ExtensionRegistryObserver. | |
55 void OnExtensionUnloaded(content::BrowserContext* browser_context, | |
56 const Extension* extension, | |
57 UnloadedExtensionInfo::Reason reason) override; | |
58 | |
59 private: | |
60 friend class BrowserContextKeyedAPIFactory<PowerApiManager>; | |
61 | |
62 explicit PowerApiManager(content::BrowserContext* context); | |
63 ~PowerApiManager() override; | |
64 | |
65 // Updates |power_save_blocker_| and |current_level_| after iterating | |
66 // over |extension_levels_|. | |
67 void UpdatePowerSaveBlocker(); | |
68 | |
69 // BrowserContextKeyedAPI implementation. | |
70 static const char* service_name() { return "PowerApiManager"; } | |
71 static const bool kServiceRedirectedInIncognito = true; | |
72 static const bool kServiceIsCreatedWithBrowserContext = false; | |
73 void Shutdown() override; | |
74 | |
75 content::BrowserContext* browser_context_; | |
76 | |
77 // Function that should be called to create PowerSaveBlocker objects. | |
78 // Tests can change this to record what would've been done instead of | |
79 // actually changing the system power-saving settings. | |
80 CreateBlockerFunction create_blocker_function_; | |
81 | |
82 scoped_ptr<content::PowerSaveBlocker> power_save_blocker_; | |
83 | |
84 // Current level used by |power_save_blocker_|. Meaningless if | |
85 // |power_save_blocker_| is NULL. | |
86 core_api::power::Level current_level_; | |
87 | |
88 // Map from extension ID to the corresponding level for each extension | |
89 // that has an outstanding request. | |
90 typedef std::map<std::string, core_api::power::Level> ExtensionLevelMap; | |
91 ExtensionLevelMap extension_levels_; | |
92 | |
93 DISALLOW_COPY_AND_ASSIGN(PowerApiManager); | |
94 }; | |
95 | |
96 } // namespace extensions | |
97 | |
98 #endif // EXTENSIONS_BROWSER_API_POWER_POWER_API_MANAGER_H_ | |
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