blob: 78273ae64a2b18f16efb1ab7331b56aa3e7f2132 [file] [log] [blame]
// 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 "device/hid/hid_service.h"
#include "base/logging.h"
#include "base/message_loop/message_loop.h"
#include "base/stl_util.h"
#if defined(OS_LINUX) && defined(USE_UDEV)
#include "device/hid/hid_service_linux.h"
#elif defined(OS_MACOSX)
#include "device/hid/hid_service_mac.h"
#else
#include "device/hid/hid_service_win.h"
#endif
namespace device {
namespace {
HidService* g_service = NULL;
} // namespace
class HidService::Destroyer : public base::MessageLoop::DestructionObserver {
public:
explicit Destroyer(HidService* hid_service)
: hid_service_(hid_service) {}
~Destroyer() override {}
private:
// base::MessageLoop::DestructionObserver implementation.
void WillDestroyCurrentMessageLoop() override {
base::MessageLoop::current()->RemoveDestructionObserver(this);
delete hid_service_;
delete this;
g_service = NULL;
}
HidService* hid_service_;
};
HidService* HidService::GetInstance(
scoped_refptr<base::SingleThreadTaskRunner> file_task_runner) {
if (g_service == NULL) {
#if defined(OS_LINUX) && defined(USE_UDEV)
g_service = new HidServiceLinux(file_task_runner);
#elif defined(OS_MACOSX)
g_service = new HidServiceMac(file_task_runner);
#elif defined(OS_WIN)
g_service = new HidServiceWin();
#endif
if (g_service != nullptr) {
Destroyer* destroyer = new Destroyer(g_service);
base::MessageLoop::current()->AddDestructionObserver(destroyer);
}
}
return g_service;
}
void HidService::SetInstanceForTest(HidService* instance) {
DCHECK(!g_service);
g_service = instance;
Destroyer* destroyer = new Destroyer(g_service);
base::MessageLoop::current()->AddDestructionObserver(destroyer);
}
HidService::~HidService() {
DCHECK(thread_checker_.CalledOnValidThread());
}
void HidService::GetDevices(std::vector<HidDeviceInfo>* devices) {
DCHECK(thread_checker_.CalledOnValidThread());
STLClearObject(devices);
for (DeviceMap::iterator it = devices_.begin();
it != devices_.end();
++it) {
devices->push_back(it->second);
}
}
// Fills in the device info struct of the given device_id.
bool HidService::GetDeviceInfo(const HidDeviceId& device_id,
HidDeviceInfo* info) const {
DCHECK(thread_checker_.CalledOnValidThread());
DeviceMap::const_iterator it = devices_.find(device_id);
if (it == devices_.end())
return false;
*info = it->second;
return true;
}
HidService::HidService() {
}
void HidService::AddDevice(const HidDeviceInfo& info) {
DCHECK(thread_checker_.CalledOnValidThread());
if (!ContainsKey(devices_, info.device_id)) {
devices_[info.device_id] = info;
}
}
void HidService::RemoveDevice(const HidDeviceId& device_id) {
DCHECK(thread_checker_.CalledOnValidThread());
DeviceMap::iterator it = devices_.find(device_id);
if (it != devices_.end())
devices_.erase(it);
}
} // namespace device