| // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "content/browser/power_save_blocker_impl.h" |
| |
| #include <string> |
| |
| #include "base/basictypes.h" |
| #include "base/bind.h" |
| #include "base/location.h" |
| #include "base/logging.h" |
| #include "base/memory/ref_counted.h" |
| #include "chromeos/dbus/dbus_thread_manager.h" |
| #include "chromeos/dbus/power_policy_controller.h" |
| #include "content/public/browser/browser_thread.h" |
| |
| namespace content { |
| |
| class PowerSaveBlockerImpl::Delegate |
| : public base::RefCountedThreadSafe<PowerSaveBlockerImpl::Delegate> { |
| public: |
| Delegate(PowerSaveBlockerType type, const std::string& reason) |
| : type_(type), |
| reason_(reason), |
| block_id_(0) {} |
| |
| void ApplyBlock() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| if (!chromeos::DBusThreadManager::IsInitialized()) |
| return; |
| |
| chromeos::PowerPolicyController* controller = |
| chromeos::DBusThreadManager::Get()->GetPowerPolicyController(); |
| switch (type_) { |
| case kPowerSaveBlockPreventAppSuspension: |
| block_id_ = controller->AddSystemWakeLock(reason_); |
| break; |
| case kPowerSaveBlockPreventDisplaySleep: |
| block_id_ = controller->AddScreenWakeLock(reason_); |
| break; |
| default: |
| NOTREACHED() << "Unhandled block type " << type_; |
| } |
| } |
| |
| void RemoveBlock() { |
| DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); |
| if (!chromeos::DBusThreadManager::IsInitialized()) |
| return; |
| |
| chromeos::DBusThreadManager::Get()->GetPowerPolicyController()-> |
| RemoveWakeLock(block_id_); |
| } |
| |
| private: |
| friend class base::RefCountedThreadSafe<Delegate>; |
| virtual ~Delegate() {} |
| |
| PowerSaveBlockerType type_; |
| std::string reason_; |
| |
| // ID corresponding to the block request in PowerPolicyController. |
| int block_id_; |
| |
| DISALLOW_COPY_AND_ASSIGN(Delegate); |
| }; |
| |
| PowerSaveBlockerImpl::PowerSaveBlockerImpl(PowerSaveBlockerType type, |
| const std::string& reason) |
| : delegate_(new Delegate(type, reason)) { |
| BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, |
| base::Bind(&Delegate::ApplyBlock, delegate_)); |
| } |
| |
| PowerSaveBlockerImpl::~PowerSaveBlockerImpl() { |
| BrowserThread::PostTask(BrowserThread::UI, FROM_HERE, |
| base::Bind(&Delegate::RemoveBlock, delegate_)); |
| } |
| |
| } // namespace content |