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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 #include "extensions/browser/api/power/power_api_manager.h" | |
| 6 | |
| 7 #include "base/bind.h" | |
| 8 #include "base/lazy_instance.h" | |
| 9 #include "extensions/browser/extension_registry.h" | |
| 10 #include "extensions/common/extension.h" | |
| 11 | |
| 12 namespace extensions { | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 const char kPowerSaveBlockerDescription[] = "extension"; | |
| 17 | |
| 18 content::PowerSaveBlocker::PowerSaveBlockerType | |
| 19 LevelToPowerSaveBlockerType(core_api::power::Level level) { | |
| 20 switch (level) { | |
| 21 case core_api::power::LEVEL_SYSTEM: | |
| 22 return content::PowerSaveBlocker::kPowerSaveBlockPreventAppSuspension; | |
| 23 case core_api::power::LEVEL_DISPLAY: // fallthrough | |
| 24 case core_api::power::LEVEL_NONE: | |
| 25 return content::PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep; | |
| 26 } | |
| 27 NOTREACHED() << "Unhandled level " << level; | |
| 28 return content::PowerSaveBlocker::kPowerSaveBlockPreventDisplaySleep; | |
| 29 } | |
| 30 | |
| 31 base::LazyInstance<BrowserContextKeyedAPIFactory<PowerApiManager> > g_factory = | |
| 32 LAZY_INSTANCE_INITIALIZER; | |
| 33 | |
| 34 } // namespace | |
| 35 | |
| 36 // static | |
| 37 PowerApiManager* PowerApiManager::Get(content::BrowserContext* context) { | |
| 38 return BrowserContextKeyedAPIFactory<PowerApiManager>::Get(context); | |
| 39 } | |
| 40 | |
| 41 // static | |
| 42 BrowserContextKeyedAPIFactory<PowerApiManager>* | |
| 43 PowerApiManager::GetFactoryInstance() { | |
| 44 return g_factory.Pointer(); | |
| 45 } | |
| 46 | |
| 47 void PowerApiManager::AddRequest(const std::string& extension_id, | |
| 48 core_api::power::Level level) { | |
| 49 extension_levels_[extension_id] = level; | |
| 50 UpdatePowerSaveBlocker(); | |
| 51 } | |
| 52 | |
| 53 void PowerApiManager::RemoveRequest(const std::string& extension_id) { | |
| 54 extension_levels_.erase(extension_id); | |
| 55 UpdatePowerSaveBlocker(); | |
| 56 } | |
| 57 | |
| 58 void PowerApiManager::SetCreateBlockerFunctionForTesting( | |
| 59 CreateBlockerFunction function) { | |
| 60 create_blocker_function_ = !function.is_null() ? function : | |
| 61 base::Bind(&content::PowerSaveBlocker::Create); | |
| 62 } | |
| 63 | |
| 64 void PowerApiManager::OnExtensionUnloaded( | |
| 65 content::BrowserContext* browser_context, | |
| 66 const Extension* extension, | |
| 67 UnloadedExtensionInfo::Reason reason) { | |
| 68 RemoveRequest(extension->id()); | |
| 69 UpdatePowerSaveBlocker(); | |
| 70 } | |
| 71 | |
| 72 PowerApiManager::PowerApiManager(content::BrowserContext* context) | |
| 73 : browser_context_(context), | |
| 74 create_blocker_function_(base::Bind(&content::PowerSaveBlocker::Create)), | |
| 75 current_level_(core_api::power::LEVEL_SYSTEM) { | |
| 76 ExtensionRegistry::Get(browser_context_)->AddObserver(this); | |
| 77 } | |
| 78 | |
| 79 PowerApiManager::~PowerApiManager() {} | |
| 80 | |
| 81 void PowerApiManager::UpdatePowerSaveBlocker() { | |
| 82 if (extension_levels_.empty()) { | |
| 83 power_save_blocker_.reset(); | |
| 84 return; | |
| 85 } | |
| 86 | |
| 87 core_api::power::Level new_level = core_api::power::LEVEL_SYSTEM; | |
| 88 for (ExtensionLevelMap::const_iterator it = extension_levels_.begin(); | |
| 89 it != extension_levels_.end(); ++it) { | |
| 90 if (it->second == core_api::power::LEVEL_DISPLAY) | |
| 91 new_level = it->second; | |
| 92 } | |
| 93 | |
| 94 // If the level changed and we need to create a new blocker, do a swap | |
| 95 // to ensure that there isn't a brief period where power management is | |
| 96 // unblocked. | |
| 97 if (!power_save_blocker_ || new_level != current_level_) { | |
| 98 content::PowerSaveBlocker::PowerSaveBlockerType type = | |
| 99 LevelToPowerSaveBlockerType(new_level); | |
| 100 scoped_ptr<content::PowerSaveBlocker> new_blocker( | |
| 101 create_blocker_function_.Run(type, | |
| 102 content::PowerSaveBlocker::kReasonOther, | |
| 103 kPowerSaveBlockerDescription)); | |
| 104 power_save_blocker_.swap(new_blocker); | |
| 105 current_level_ = new_level; | |
| 106 } | |
| 107 } | |
| 108 | |
| 109 void PowerApiManager::Shutdown() { | |
| 110 // Unregister here rather than in the d'tor; otherwise this call will recreate | |
| 111 // the already-deleted ExtensionRegistry. | |
| 112 ExtensionRegistry::Get(browser_context_)->RemoveObserver(this); | |
| 113 power_save_blocker_.reset(); | |
| 114 } | |
| 115 | |
| 116 } // namespace extensions | |
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Chromium Code Reviews
Issue 958313002:
[CleanUp] Move PowerApiManager to power_api and Rename (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master