gecko-dev/hal/Hal.h

388 lines
12 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et ft=cpp : */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_Hal_h
#define mozilla_Hal_h
#include "base/basictypes.h"
#include "base/platform_thread.h"
#include "nsTArray.h"
#include "mozilla/dom/battery/Types.h"
#include "mozilla/dom/network/Types.h"
#include "mozilla/dom/power/Types.h"
#include "mozilla/dom/ScreenOrientation.h"
#include "mozilla/hal_sandbox/PHal.h"
#include "mozilla/HalScreenConfiguration.h"
#include "mozilla/HalTypes.h"
#include "mozilla/Observer.h"
#include "mozilla/Types.h"
/*
* Hal.h contains the public Hal API.
*
* By default, this file defines its functions in the hal namespace, but if
* MOZ_HAL_NAMESPACE is defined, we'll define our functions in that namespace.
*
* This is used by HalImpl.h and HalSandbox.h, which define copies of all the
* functions here in the hal_impl and hal_sandbox namespaces.
*/
class nsPIDOMWindowInner;
#ifndef MOZ_HAL_NAMESPACE
# define MOZ_HAL_NAMESPACE hal
# define MOZ_DEFINED_HAL_NAMESPACE 1
#endif
namespace mozilla {
namespace hal {
class WindowIdentifier;
typedef Observer<int64_t> SystemClockChangeObserver;
typedef Observer<SystemTimezoneChangeInformation> SystemTimezoneChangeObserver;
} // namespace hal
namespace MOZ_HAL_NAMESPACE {
/**
* 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.
*
* Only an active window within an active tab may call Vibrate; calls
* from inactive windows and windows on inactive tabs do nothing.
*
* If you're calling hal::Vibrate from the outside world, pass an
* nsIDOMWindow* in place of the WindowIdentifier parameter.
* The method with WindowIdentifier will be called automatically.
*/
void Vibrate(const nsTArray<uint32_t>& pattern,
nsPIDOMWindowInner* aWindow);
void Vibrate(const nsTArray<uint32_t>& pattern,
const hal::WindowIdentifier &id);
/**
* Cancel a vibration started by the content window identified by
* WindowIdentifier.
*
* If the window was the last window to start a vibration, the
* cancellation request will go through even if the window is not
* active.
*
* As with hal::Vibrate(), if you're calling hal::CancelVibrate from the outside
* world, pass an nsIDOMWindow*. The method with WindowIdentifier will be called
* automatically.
*/
void CancelVibrate(nsPIDOMWindowInner* aWindow);
void CancelVibrate(const hal::WindowIdentifier &id);
/**
* 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);
/**
* 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);
/**
* Register an observer for the sensor of given type.
*
* The observer will receive data whenever the data generated by the
* sensor is avaiable.
*/
void RegisterSensorObserver(hal::SensorType aSensor,
hal::ISensorObserver *aObserver);
/**
* Unregister an observer for the sensor of given type.
*/
void UnregisterSensorObserver(hal::SensorType aSensor,
hal::ISensorObserver *aObserver);
/**
* Post a value generated by a sensor.
*
* This API is internal to hal; clients shouldn't call it directly.
*/
void NotifySensorChange(const hal::SensorData &aSensorData);
/**
* Enable sensor notifications from the backend
*
* This method is only visible from implementation of sensor manager.
* Rest of the system should not try this.
*/
void EnableSensorNotifications(hal::SensorType aSensor);
/**
* Disable sensor notifications from the backend
*
* This method is only visible from implementation of sensor manager.
* Rest of the system should not try this.
*/
void DisableSensorNotifications(hal::SensorType aSensor);
/**
* Inform the network backend there is a new network observer.
* @param aNetworkObserver The observer that should be added.
*/
void RegisterNetworkObserver(NetworkObserver* aNetworkObserver);
/**
* Inform the network backend a network observer unregistered.
* @param aNetworkObserver The observer that should be removed.
*/
void UnregisterNetworkObserver(NetworkObserver* aNetworkObserver);
/**
* Returns the current network information.
*/
void GetCurrentNetworkInformation(hal::NetworkInformation* aNetworkInfo);
/**
* Notify of a change in the network state.
* @param aNetworkInfo The new network information.
*/
void NotifyNetworkChange(const hal::NetworkInformation& aNetworkInfo);
/**
* Adjusting system clock.
* @param aDeltaMilliseconds The difference compared with current system clock.
*/
void AdjustSystemClock(int64_t aDeltaMilliseconds);
/**
* Register observer for system clock changed notification.
* @param aObserver The observer that should be added.
*/
void RegisterSystemClockChangeObserver(
hal::SystemClockChangeObserver* aObserver);
/**
* Unregister the observer for system clock changed.
* @param aObserver The observer that should be removed.
*/
void UnregisterSystemClockChangeObserver(
hal::SystemClockChangeObserver* aObserver);
/**
* Notify of a change in the system clock.
* @param aClockDeltaMS
*/
void NotifySystemClockChange(const int64_t& aClockDeltaMS);
/**
* Register observer for system timezone changed notification.
* @param aObserver The observer that should be added.
*/
void RegisterSystemTimezoneChangeObserver(
hal::SystemTimezoneChangeObserver* aObserver);
/**
* Unregister the observer for system timezone changed.
* @param aObserver The observer that should be removed.
*/
void UnregisterSystemTimezoneChangeObserver(
hal::SystemTimezoneChangeObserver* aObserver);
/**
* Notify of a change in the system timezone.
* @param aSystemTimezoneChangeInfo
*/
void NotifySystemTimezoneChange(
const hal::SystemTimezoneChangeInformation& aSystemTimezoneChangeInfo);
/**
* Enable wake lock notifications from the backend.
*
* This method is only used by WakeLockObserversManager.
*/
void EnableWakeLockNotifications();
/**
* Disable wake lock notifications from the backend.
*
* This method is only used by WakeLockObserversManager.
*/
void DisableWakeLockNotifications();
/**
* Inform the wake lock backend there is a new wake lock observer.
* @param aWakeLockObserver The observer that should be added.
*/
void RegisterWakeLockObserver(WakeLockObserver* aObserver);
/**
* Inform the wake lock backend a wake lock observer unregistered.
* @param aWakeLockObserver The observer that should be removed.
*/
void UnregisterWakeLockObserver(WakeLockObserver* aObserver);
/**
* Adjust a wake lock's counts on behalf of a given process.
*
* In most cases, you shouldn't need to pass the aProcessID argument; the
* default of CONTENT_PROCESS_ID_UNKNOWN is probably what you want.
*
* @param aTopic lock topic
* @param aLockAdjust to increase or decrease active locks
* @param aHiddenAdjust to increase or decrease hidden locks
* @param aProcessID indicates which process we're modifying the wake lock
* on behalf of. It is interpreted as
*
* CONTENT_PROCESS_ID_UNKNOWN: The current process
* CONTENT_PROCESS_ID_MAIN: The root process
* X: The process with ContentChild::GetID() == X
*/
void ModifyWakeLock(const nsAString &aTopic,
hal::WakeLockControl aLockAdjust,
hal::WakeLockControl aHiddenAdjust,
uint64_t aProcessID = hal::CONTENT_PROCESS_ID_UNKNOWN);
/**
* Query the wake lock numbers of aTopic.
* @param aTopic lock topic
* @param aWakeLockInfo wake lock numbers
*/
void GetWakeLockInfo(const nsAString &aTopic, hal::WakeLockInformation *aWakeLockInfo);
/**
* Notify of a change in the wake lock state.
* @param aWakeLockInfo The new wake lock information.
*/
void NotifyWakeLockChange(const hal::WakeLockInformation& aWakeLockInfo);
/**
* Inform the backend there is a new screen configuration observer.
* @param aScreenConfigurationObserver The observer that should be added.
*/
void RegisterScreenConfigurationObserver(hal::ScreenConfigurationObserver* aScreenConfigurationObserver);
/**
* Inform the backend a screen configuration observer unregistered.
* @param aScreenConfigurationObserver The observer that should be removed.
*/
void UnregisterScreenConfigurationObserver(hal::ScreenConfigurationObserver* aScreenConfigurationObserver);
/**
* Returns the current screen configuration.
*/
void GetCurrentScreenConfiguration(hal::ScreenConfiguration* aScreenConfiguration);
/**
* Notify of a change in the screen configuration.
* @param aScreenConfiguration The new screen orientation.
*/
void NotifyScreenConfigurationChange(const hal::ScreenConfiguration& aScreenConfiguration);
/**
* Lock the screen orientation to the specific orientation.
* @return Whether the lock has been accepted.
*/
MOZ_MUST_USE bool LockScreenOrientation(const dom::ScreenOrientationInternal& aOrientation);
/**
* Unlock the screen orientation.
*/
void UnlockScreenOrientation();
/**
* Register an observer for the switch of given SwitchDevice.
*
* The observer will receive data whenever the data generated by the
* given switch.
*/
void RegisterSwitchObserver(hal::SwitchDevice aDevice, hal::SwitchObserver *aSwitchObserver);
/**
* Unregister an observer for the switch of given SwitchDevice.
*/
void UnregisterSwitchObserver(hal::SwitchDevice aDevice, hal::SwitchObserver *aSwitchObserver);
/**
* Notify the state of the switch.
*
* This API is internal to hal; clients shouldn't call it directly.
*/
void NotifySwitchChange(const hal::SwitchEvent& aEvent);
/**
* Return true if the current platform supports the setting of process
* priority.
*/
bool SetProcessPrioritySupported();
/**
* Set the priority of the given process.
*
* Exactly what this does will vary between platforms. On *nix we might give
* background processes higher nice values. On other platforms, we might
* ignore this call entirely.
*/
void SetProcessPriority(int aPid, hal::ProcessPriority aPriority);
/**
* Set the current thread's priority to appropriate platform-specific value for
* given functionality. Instead of providing arbitrary priority numbers you
* must specify a type of function like THREAD_PRIORITY_COMPOSITOR.
*/
void SetCurrentThreadPriority(hal::ThreadPriority aThreadPriority);
/**
* Set a thread priority to appropriate platform-specific value for
* given functionality. Instead of providing arbitrary priority numbers you
* must specify a type of function like THREAD_PRIORITY_COMPOSITOR.
*/
void SetThreadPriority(PlatformThreadId aThreadId,
hal::ThreadPriority aThreadPriority);
/**
* Start monitoring disk space for low space situations.
*
* This API is currently only allowed to be used from the main process.
*/
void StartDiskSpaceWatcher();
/**
* Stop monitoring disk space for low space situations.
*
* This API is currently only allowed to be used from the main process.
*/
void StopDiskSpaceWatcher();
} // namespace MOZ_HAL_NAMESPACE
} // namespace mozilla
#ifdef MOZ_DEFINED_HAL_NAMESPACE
# undef MOZ_DEFINED_HAL_NAMESPACE
# undef MOZ_HAL_NAMESPACE
#endif
#endif // mozilla_Hal_h