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// Copyright (c) 2011 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 "chrome/browser/chromeos/cros/power_library.h"
#include <algorithm>
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/compiler_specific.h"
#include "base/logging.h"
#include "base/observer_list.h"
#include "chrome/browser/chromeos/cros/cros_library.h"
#include "content/public/browser/browser_thread.h"
#include "third_party/cros/chromeos_power.h"
#include "third_party/cros/chromeos_resume.h"
using content::BrowserThread;
namespace chromeos {
class PowerLibraryImpl : public PowerLibrary {
public:
PowerLibraryImpl()
: resume_status_connection_(NULL) {
}
virtual ~PowerLibraryImpl() {
if (resume_status_connection_) {
chromeos::DisconnectResume(resume_status_connection_);
resume_status_connection_ = NULL;
}
}
// Begin PowerLibrary implementation.
virtual void Init() OVERRIDE {
DCHECK(CrosLibrary::Get()->libcros_loaded());
resume_status_connection_ =
chromeos::MonitorResume(&SystemResumedHandler, this);
}
virtual void AddObserver(Observer* observer) OVERRIDE {
observers_.AddObserver(observer);
}
virtual void RemoveObserver(Observer* observer) OVERRIDE {
observers_.RemoveObserver(observer);
}
// End PowerLibrary implementation.
private:
static void SystemResumedHandler(void* object) {
PowerLibraryImpl* power = static_cast<PowerLibraryImpl*>(object);
power->SystemResumed();
}
void SystemResumed() {
// Called from SystemResumedHandler, a libcros callback which should
// always run on UI thread.
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
FOR_EACH_OBSERVER(Observer, observers_, SystemResumed());
}
ObserverList<Observer> observers_;
// A reference to the resume alerts.
chromeos::ResumeConnection resume_status_connection_;
DISALLOW_COPY_AND_ASSIGN(PowerLibraryImpl);
};
// The stub implementation runs the battery up and down, pausing at the
// fully charged and fully depleted states.
class PowerLibraryStubImpl : public PowerLibrary {
public:
PowerLibraryStubImpl() {
}
virtual ~PowerLibraryStubImpl() {}
// Begin PowerLibrary implementation.
virtual void Init() OVERRIDE {}
virtual void AddObserver(Observer* observer) OVERRIDE {
observers_.AddObserver(observer);
}
virtual void RemoveObserver(Observer* observer) OVERRIDE {
observers_.RemoveObserver(observer);
}
// End PowerLibrary implementation.
private:
ObserverList<Observer> observers_;
};
// static
PowerLibrary* PowerLibrary::GetImpl(bool stub) {
PowerLibrary* impl;
if (stub)
impl = new PowerLibraryStubImpl();
else
impl = new PowerLibraryImpl();
impl->Init();
return impl;
}
} // namespace chromeos
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