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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.
#ifndef CHROME_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_
#define CHROME_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_
#include <atlbase.h>
#include <atlcom.h>
#include <locationapi.h>
#include <sensors.h>
#include <Windows.h>
#include "base/time.h"
#include "base/win_util.h"
struct Geoposition;
// PropVariantToDouble
typedef HRESULT (WINAPI* PropVariantToDoubleFunction)
(REFPROPVARIANT propvarIn, DOUBLE *pdblRet);
class Win7LocationApi {
public:
// Public for testing. See Create() below for normal usage.
Win7LocationApi(HINSTANCE prop_library,
PropVariantToDoubleFunction PropVariantToDouble_function,
ILocation* locator);
virtual ~Win7LocationApi();
// Attempts to load propsys.dll, initialise |location_| and requests the user
// for access to location information. Creates and returns ownership of an
// instance of Win7LocationApi if all succeed.
static Win7LocationApi* Create();
// Gives the best available position.
// Returns false if no valid position is available.
virtual void GetPosition(Geoposition* position);
// Changes the "accuracy" needed. Affects power levels of devices.
virtual bool SetHighAccuracy(bool acc);
private:
// Provides the best position fix if one is available.
// Does this by requesting a location report and querying it to obtain
// location information.
virtual bool GetPositionIfFixed(Geoposition* position);
// ILocation object that lets us communicate with the Location and
// Sensors platform.
CComPtr<ILocation> locator_;
// Holds the opened propsys.dll library that is passed on construction.
// This class is responsible for closing it.
HINSTANCE prop_lib_;
PropVariantToDoubleFunction PropVariantToDouble_function_;
DISALLOW_COPY_AND_ASSIGN(Win7LocationApi);
};
#endif // CHROME_BROWSER_GEOLOCATION_WIN7_LOCATION_API_WIN_H_
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