widget/src/xpwidgets/nsAccelerometer.h
author Doug Turner <dougt@dougt.org>
Mon, 08 Mar 2010 07:33:24 -0800
changeset 39098 843e68865dea42bc30c3729b2f4e384f47647e70
parent 32014 cdd4847ae67f6ab56ee118cde9ef750af58082b0
permissions -rw-r--r--
Bug 550410. Provide a pref to disable orientation events. r=dveditz

/* ***** BEGIN LICENSE BLOCK *****
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 * The Original Code is mozilla.org code.
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 * The Initial Developer of the Original Code is
 * Doug Turner <dougt@dougt.org>
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 * the Initial Developer. All Rights Reserved.
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#ifndef nsAccelerometer_h
#define nsAccelerometer_h

#include "nsIAccelerometer.h"
#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsITimer.h"

class nsIDOMWindow;

class nsAccelerometer : public nsIAccelerometer
{
public:
  NS_DECL_ISUPPORTS
  NS_DECL_NSIACCELEROMETER

  nsAccelerometer();

  virtual ~nsAccelerometer();

  /* must be called on the main thread or else */
  void AccelerationChanged(double x, double y, double z);

  double mLastX;
  double mLastY;
  double mLastZ;

private:
  nsCOMArray<nsIAccelerationListener> mListeners;
  nsCOMArray<nsIDOMWindow> mWindowListeners;

  void StartDisconnectTimer();

  PRBool mStarted;
  PRBool mNewListener;

  nsCOMPtr<nsITimer> mTimeoutTimer;
  static void TimeoutHandler(nsITimer *aTimer, void *aClosure);

 protected:

  PRUint32 mUpdateInterval;
  PRBool   mEnabled;

  virtual void Startup()  = 0;
  virtual void Shutdown() = 0;
};

#endif