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// Copyright (c) 2010 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/device_orientation/provider.h"
#include "base/logging.h"
#include "chrome/browser/browser_thread.h"
#if defined(OS_MACOSX)
#include "chrome/browser/device_orientation/accelerometer_mac.h"
#endif
#include "chrome/browser/device_orientation/data_fetcher.h"
#include "chrome/browser/device_orientation/provider_impl.h"
namespace device_orientation {
Provider* Provider::GetInstance() {
if (!instance_) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
const ProviderImpl::DataFetcherFactory default_factories[] = {
#if defined(OS_MACOSX)
AccelerometerMac::Create,
#endif
NULL
};
instance_ = new ProviderImpl(default_factories);
}
return instance_;
}
void Provider::SetInstanceForTests(Provider* provider) {
DCHECK(!instance_);
instance_ = provider;
}
Provider* Provider::GetInstanceForTests() {
return instance_;
}
Provider::Provider() {
}
Provider::~Provider() {
DCHECK(instance_ == this);
instance_ = NULL;
}
Provider* Provider::instance_ = NULL;
} // namespace device_orientation
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