gecko-dev/dom/system/nsAccelerometer.h

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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Doug Turner <dougt@dougt.org>
* Portions created by the Initial Developer are Copyright (C) 2009
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsAccelerometer_h
#define nsAccelerometer_h
#include "nsIAccelerometer.h"
#include "nsCOMArray.h"
#include "nsCOMPtr.h"
#include "nsITimer.h"
#define NS_ACCELEROMETER_CID \
{ 0xecba5203, 0x77da, 0x465a, \
{ 0x86, 0x5e, 0x78, 0xb7, 0xaf, 0x10, 0xd8, 0xf7 } }
#define NS_ACCELEROMETER_CONTRACTID "@mozilla.org/accelerometer;1"
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