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// Copyright 2014 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/device/input_service_proxy.h"
#include "base/bind_helpers.h"
#include "base/task_runner_util.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
using device::InputServiceLinux;
typedef device::InputServiceLinux::InputDeviceInfo InputDeviceInfo;
namespace chromeos {
class InputServiceProxy::ServiceObserver : public InputServiceLinux::Observer {
public:
ServiceObserver() { DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI)); }
virtual ~ServiceObserver() { DCHECK(CalledOnValidThread()); }
void Initialize(const base::WeakPtr<InputServiceProxy>& proxy) {
DCHECK(CalledOnValidThread());
InputServiceLinux::GetInstance()->AddObserver(this);
proxy_ = proxy;
}
void Shutdown() {
DCHECK(CalledOnValidThread());
if (InputServiceLinux::HasInstance())
InputServiceLinux::GetInstance()->RemoveObserver(this);
delete this;
}
std::vector<InputDeviceInfo> GetDevices() {
DCHECK(CalledOnValidThread());
std::vector<InputDeviceInfo> devices;
if (InputServiceLinux::HasInstance())
InputServiceLinux::GetInstance()->GetDevices(&devices);
return devices;
}
void GetDeviceInfo(const std::string& id,
const InputServiceProxy::GetDeviceInfoCallback& callback) {
DCHECK(CalledOnValidThread());
bool success = false;
InputDeviceInfo info;
info.id = id;
if (InputServiceLinux::HasInstance())
success = InputServiceLinux::GetInstance()->GetDeviceInfo(id, &info);
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE, base::Bind(callback, success, info));
}
// InputServiceLinux::Observer implementation:
virtual void OnInputDeviceAdded(
const InputServiceLinux::InputDeviceInfo& info) OVERRIDE {
DCHECK(CalledOnValidThread());
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&InputServiceProxy::OnDeviceAdded, proxy_, info));
}
virtual void OnInputDeviceRemoved(const std::string& id) OVERRIDE {
DCHECK(CalledOnValidThread());
BrowserThread::PostTask(
BrowserThread::UI,
FROM_HERE,
base::Bind(&InputServiceProxy::OnDeviceRemoved, proxy_, id));
}
private:
bool CalledOnValidThread() const {
return BrowserThread::CurrentlyOn(BrowserThread::FILE);
}
base::WeakPtr<InputServiceProxy> proxy_;
DISALLOW_COPY_AND_ASSIGN(ServiceObserver);
};
InputServiceProxy::InputServiceProxy()
: service_observer_(new ServiceObserver()), weak_factory_(this) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
BrowserThread::PostTask(
BrowserThread::FILE,
FROM_HERE,
base::Bind(&InputServiceProxy::ServiceObserver::Initialize,
base::Unretained(service_observer_.get()),
weak_factory_.GetWeakPtr()));
}
InputServiceProxy::~InputServiceProxy() {
DCHECK(thread_checker_.CalledOnValidThread());
BrowserThread::PostTask(
BrowserThread::FILE,
FROM_HERE,
base::Bind(&InputServiceProxy::ServiceObserver::Shutdown,
base::Unretained(service_observer_.release())));
}
// static
void InputServiceProxy::WarmUp() {
content::BrowserThread::PostTask(
content::BrowserThread::FILE,
FROM_HERE,
base::Bind(base::IgnoreResult(&InputServiceLinux::GetInstance)));
}
void InputServiceProxy::AddObserver(Observer* observer) {
DCHECK(thread_checker_.CalledOnValidThread());
if (observer)
observers_.AddObserver(observer);
}
void InputServiceProxy::RemoveObserver(Observer* observer) {
DCHECK(thread_checker_.CalledOnValidThread());
if (observer)
observers_.RemoveObserver(observer);
}
void InputServiceProxy::GetDevices(const GetDevicesCallback& callback) {
DCHECK(thread_checker_.CalledOnValidThread());
BrowserThread::PostTaskAndReplyWithResult(
BrowserThread::FILE,
FROM_HERE,
base::Bind(&InputServiceProxy::ServiceObserver::GetDevices,
base::Unretained(service_observer_.get())),
callback);
}
void InputServiceProxy::GetDeviceInfo(const std::string& id,
const GetDeviceInfoCallback& callback) {
DCHECK(thread_checker_.CalledOnValidThread());
BrowserThread::PostTask(
BrowserThread::FILE,
FROM_HERE,
base::Bind(&InputServiceProxy::ServiceObserver::GetDeviceInfo,
base::Unretained(service_observer_.release()),
id,
callback));
}
void InputServiceProxy::OnDeviceAdded(
const InputServiceLinux::InputDeviceInfo& info) {
DCHECK(thread_checker_.CalledOnValidThread());
FOR_EACH_OBSERVER(Observer, observers_, OnInputDeviceAdded(info));
}
void InputServiceProxy::OnDeviceRemoved(const std::string& id) {
DCHECK(thread_checker_.CalledOnValidThread());
FOR_EACH_OBSERVER(Observer, observers_, OnInputDeviceRemoved(id));
}
} // namespace chromeos
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