gecko-dev/hal/Hal.h

134 lines
4.6 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: sw=2 ts=8 et ft=cpp : */
/* ***** 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 Code.
*
* The Initial Developer of the Original Code is
* The Mozilla Foundation
* Portions created by the Initial Developer are Copyright (C) 2011
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Jones <jones.chris.g@gmail.com>
*
* 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 mozilla_Hal_h
#define mozilla_Hal_h 1
#include "base/basictypes.h"
#include "mozilla/Types.h"
#include "nsTArray.h"
#include "mozilla/dom/battery/Types.h"
#ifndef MOZ_HAL_NAMESPACE
// This goop plays some cpp tricks to ensure a uniform API across the
// API entry point, "sandbox" implementations (for content processes),
// and "impl" backends where the real work happens. After this runs
// through cpp, there will be three sets of identical APIs
// hal_impl:: --- the platform-specific implementation of an API.
// hal_sandbox:: --- forwards calls up to the parent process
// hal:: --- invokes sandboxed impl if in a sandboxed process,
// otherwise forwards to hal_impl
//
// External code should never invoke hal_impl:: or hal_sandbox:: code
// directly.
# include "HalImpl.h"
# include "HalSandbox.h"
# define MOZ_HAL_NAMESPACE hal
# define MOZ_DEFINED_HAL_NAMESPACE 1
#endif
namespace mozilla {
namespace hal {
class BatteryInformation;
} // namespace hal
namespace MOZ_HAL_NAMESPACE /*hal*/ {
/**
* Turn the default vibrator device on/off per the pattern specified
* by |pattern|. Each element in the pattern is the number of
* milliseconds to turn the vibrator on or off. The first element in
* |pattern| is an "on" element, the next is "off", and so on.
*
* If |pattern| is empty, any in-progress vibration is canceled.
*/
void Vibrate(const nsTArray<uint32>& pattern);
/**
* Inform the battery backend there is a new battery observer.
* @param aBatteryObserver The observer that should be added.
*/
void RegisterBatteryObserver(BatteryObserver* aBatteryObserver);
/**
* Inform the battery backend a battery observer unregistered.
* @param aBatteryObserver The observer that should be removed.
*/
void UnregisterBatteryObserver(BatteryObserver* aBatteryObserver);
/**
* Enables battery notifications from the backend.
*
* This method is semi-private in the sense of it is visible in the hal
* namespace but should not be used. Calls to this method from the hal
* namespace will produce a link error because it is not defined.
*/
void EnableBatteryNotifications();
/**
* Disables battery notifications from the backend.
*
* This method is semi-private in the sense of it is visible in the hal
* namespace but should not be used. Calls to this method from the hal
* namespace will produce a link error because it is not defined.
*/
void DisableBatteryNotifications();
/**
* Returns the current battery information.
*/
void GetCurrentBatteryInformation(hal::BatteryInformation* aBatteryInfo);
/**
* Notify of a change in the battery state.
* @param aBatteryInfo The new battery information.
*/
void NotifyBatteryChange(const hal::BatteryInformation& aBatteryInfo);
}
}
#ifdef MOZ_DEFINED_HAL_NAMESPACE
# undef MOZ_DEFINED_HAL_NAMESPACE
# undef MOZ_HAL_NAMESPACE
#endif
#endif // mozilla_Hal_h