forked from mirrors/gecko-dev
138 lines
3.9 KiB
C++
138 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/dom/ContentParent.h"
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#include "mozilla/Hal.h"
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#include "mozilla/HalWakeLock.h"
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#include "mozilla/ClearOnShutdown.h"
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#include "mozilla/ModuleUtils.h"
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#include "mozilla/Preferences.h"
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#include "nsIDOMWakeLockListener.h"
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#include "PowerManagerService.h"
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#include "WakeLock.h"
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// For _exit().
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#ifdef XP_WIN
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# include <process.h>
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#else
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# include <unistd.h>
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#endif
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namespace mozilla::dom::power {
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using namespace hal;
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NS_IMPL_ISUPPORTS(PowerManagerService, nsIPowerManagerService)
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/* static */
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StaticRefPtr<PowerManagerService> PowerManagerService::sSingleton;
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/* static */
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already_AddRefed<PowerManagerService> PowerManagerService::GetInstance() {
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if (!sSingleton) {
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sSingleton = new PowerManagerService();
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sSingleton->Init();
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ClearOnShutdown(&sSingleton);
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}
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RefPtr<PowerManagerService> service = sSingleton.get();
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return service.forget();
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}
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void PowerManagerService::Init() { RegisterWakeLockObserver(this); }
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PowerManagerService::~PowerManagerService() {
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UnregisterWakeLockObserver(this);
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}
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void PowerManagerService::ComputeWakeLockState(
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const WakeLockInformation& aWakeLockInfo, nsAString& aState) {
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WakeLockState state = hal::ComputeWakeLockState(aWakeLockInfo.numLocks(),
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aWakeLockInfo.numHidden());
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switch (state) {
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case WAKE_LOCK_STATE_UNLOCKED:
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aState.AssignLiteral("unlocked");
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break;
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case WAKE_LOCK_STATE_HIDDEN:
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aState.AssignLiteral("locked-background");
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break;
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case WAKE_LOCK_STATE_VISIBLE:
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aState.AssignLiteral("locked-foreground");
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break;
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}
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}
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void PowerManagerService::Notify(const WakeLockInformation& aWakeLockInfo) {
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nsAutoString state;
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ComputeWakeLockState(aWakeLockInfo, state);
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/**
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* Copy the listeners list before we walk through the callbacks
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* because the callbacks may install new listeners. We expect no
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* more than one listener per window, so it shouldn't be too long.
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*/
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const CopyableAutoTArray<nsCOMPtr<nsIDOMMozWakeLockListener>, 2> listeners =
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mWakeLockListeners;
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for (uint32_t i = 0; i < listeners.Length(); ++i) {
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listeners[i]->Callback(aWakeLockInfo.topic(), state);
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}
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}
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NS_IMETHODIMP
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PowerManagerService::AddWakeLockListener(nsIDOMMozWakeLockListener* aListener) {
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if (mWakeLockListeners.Contains(aListener)) return NS_OK;
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mWakeLockListeners.AppendElement(aListener);
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return NS_OK;
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}
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NS_IMETHODIMP
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PowerManagerService::RemoveWakeLockListener(
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nsIDOMMozWakeLockListener* aListener) {
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mWakeLockListeners.RemoveElement(aListener);
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return NS_OK;
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}
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NS_IMETHODIMP
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PowerManagerService::GetWakeLockState(const nsAString& aTopic,
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nsAString& aState) {
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WakeLockInformation info;
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GetWakeLockInfo(aTopic, &info);
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ComputeWakeLockState(info, aState);
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return NS_OK;
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}
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already_AddRefed<WakeLock> PowerManagerService::NewWakeLock(
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const nsAString& aTopic, nsPIDOMWindowInner* aWindow,
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mozilla::ErrorResult& aRv) {
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RefPtr<WakeLock> wakelock = new WakeLock();
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aRv = wakelock->Init(aTopic, aWindow);
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if (aRv.Failed()) {
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return nullptr;
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}
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return wakelock.forget();
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}
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NS_IMETHODIMP
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PowerManagerService::NewWakeLock(const nsAString& aTopic,
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mozIDOMWindow* aWindow,
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nsIWakeLock** aWakeLock) {
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mozilla::ErrorResult rv;
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RefPtr<WakeLock> wakelock =
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NewWakeLock(aTopic, nsPIDOMWindowInner::From(aWindow), rv);
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if (rv.Failed()) {
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return rv.StealNSResult();
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}
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wakelock.forget(aWakeLock);
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return NS_OK;
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}
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} // namespace mozilla::dom::power
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