// Copyright 2008, Google Inc.
//
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// modification, are permitted provided that the following conditions are met:
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//     this list of conditions and the following disclaimer.
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#ifndef GEARS_GEOLOCATION_RADIO_DATA_PROVIDER_WINCE_H__
#define GEARS_GEOLOCATION_RADIO_DATA_PROVIDER_WINCE_H__

#include <atlsync.h>  // For CEvent.
#include <set>
#include "gears/base/common/common.h"
#include "gears/base/common/mutex.h"
#include "gears/geolocation/device_data_provider.h"
#include "gears/geolocation/radio_interface_layer_wince.h"
#include "gears/geolocation/thread.h"

class WinceRadioDataProvider
    : public DeviceDataProviderBase<RadioData>,
      public Thread {
 public:
  // Allow DeviceDataProviderBase<RadioData>::Create() to access our private
  // constructor.
  friend DeviceDataProviderBase<RadioData>;

  // DeviceDataProviderBase<RadioData> implementation.
  virtual bool GetData(RadioData *data);

  // Used to handle result callbacks from RIL requests.
  void RILResult(DWORD dwCode,
                 HRESULT hrCmdID,
                 const void* lpData,
                 DWORD cbData,
                 DWORD dwParam);

 private:
  // Private constructor and destructor, callers must use Register and
  // Unregister.
  WinceRadioDataProvider();
  virtual ~WinceRadioDataProvider();

  // AsyncThread implementation.
  virtual void Run();
  bool Init();

  bool IsAllDataAvailable();
  void NotifyListenersIfUpdateAvailable();
  void FireRilCommands();

  RadioData radio_data_;
  RadioData last_radio_data_;
  Mutex data_mutex_;

  // RIL function pointers.
  RILInitializeFunction* ril_initialize_function_;
  RILDeinitializeFunction* ril_deinitialize_function_;
  RILGetCellTowerInfoFunction* ril_get_cell_tower_info_function_;
  RILGetSignalQualityFunction* ril_get_signal_quality_function_;
  RILGetCurrentSystemTypeFunction* ril_get_current_system_type_function_;
  RILGetCurrentOperatorFunction* ril_get_current_operator_function_;

  // Data
  HRIL ril_handle_;
  HRESULT ril_get_cell_tower_info_command_id_;
  HRESULT ril_get_signal_quality_command_id_;
  HRESULT ril_get_current_system_type_command_id_;
  HRESULT ril_get_current_operator_command_id_;

  // Event signalled in response to a RILResult callback.
  CEvent result_event_;
  // Events signalled to shut down the thread that polls the RIL.
  CEvent stop_event_;
  DISALLOW_EVIL_CONSTRUCTORS(WinceRadioDataProvider);
};

#endif  // GEARS_GEOLOCATION_RADIO_DATA_PROVIDER_WINCE_H__