1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/power/PowerManager.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,209 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "mozilla/dom/PowerManager.h"
1.10 +
1.11 +#include "mozilla/Hal.h"
1.12 +#include "WakeLock.h"
1.13 +#include "nsDOMClassInfoID.h"
1.14 +#include "nsIDOMWakeLockListener.h"
1.15 +#include "nsIDocument.h"
1.16 +#include "nsIPermissionManager.h"
1.17 +#include "nsIPowerManagerService.h"
1.18 +#include "nsIPrincipal.h"
1.19 +#include "nsPIDOMWindow.h"
1.20 +#include "nsServiceManagerUtils.h"
1.21 +#include "nsError.h"
1.22 +#include "mozilla/dom/MozPowerManagerBinding.h"
1.23 +
1.24 +namespace mozilla {
1.25 +namespace dom {
1.26 +
1.27 +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(PowerManager)
1.28 + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
1.29 + NS_INTERFACE_MAP_ENTRY(nsISupports)
1.30 + NS_INTERFACE_MAP_ENTRY(nsIDOMMozWakeLockListener)
1.31 +NS_INTERFACE_MAP_END
1.32 +
1.33 +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_2(PowerManager, mListeners, mWindow)
1.34 +
1.35 +NS_IMPL_CYCLE_COLLECTING_ADDREF(PowerManager)
1.36 +NS_IMPL_CYCLE_COLLECTING_RELEASE(PowerManager)
1.37 +
1.38 +/* virtual */ JSObject*
1.39 +PowerManager::WrapObject(JSContext* aCx)
1.40 +{
1.41 + return MozPowerManagerBinding::Wrap(aCx, this);
1.42 +}
1.43 +
1.44 +nsresult
1.45 +PowerManager::Init(nsIDOMWindow *aWindow)
1.46 +{
1.47 + mWindow = aWindow;
1.48 +
1.49 + nsCOMPtr<nsIPowerManagerService> pmService =
1.50 + do_GetService(POWERMANAGERSERVICE_CONTRACTID);
1.51 + NS_ENSURE_STATE(pmService);
1.52 +
1.53 + // Add ourself to the global notification list.
1.54 + pmService->AddWakeLockListener(this);
1.55 + return NS_OK;
1.56 +}
1.57 +
1.58 +nsresult
1.59 +PowerManager::Shutdown()
1.60 +{
1.61 + nsCOMPtr<nsIPowerManagerService> pmService =
1.62 + do_GetService(POWERMANAGERSERVICE_CONTRACTID);
1.63 + NS_ENSURE_STATE(pmService);
1.64 +
1.65 + // Remove ourself from the global notification list.
1.66 + pmService->RemoveWakeLockListener(this);
1.67 + return NS_OK;
1.68 +}
1.69 +
1.70 +void
1.71 +PowerManager::Reboot(ErrorResult& aRv)
1.72 +{
1.73 + nsCOMPtr<nsIPowerManagerService> pmService =
1.74 + do_GetService(POWERMANAGERSERVICE_CONTRACTID);
1.75 + if (pmService) {
1.76 + pmService->Reboot();
1.77 + } else {
1.78 + aRv.Throw(NS_ERROR_UNEXPECTED);
1.79 + }
1.80 +}
1.81 +
1.82 +void
1.83 +PowerManager::FactoryReset()
1.84 +{
1.85 + hal::FactoryReset();
1.86 +}
1.87 +
1.88 +void
1.89 +PowerManager::PowerOff(ErrorResult& aRv)
1.90 +{
1.91 + nsCOMPtr<nsIPowerManagerService> pmService =
1.92 + do_GetService(POWERMANAGERSERVICE_CONTRACTID);
1.93 + if (pmService) {
1.94 + pmService->PowerOff();
1.95 + } else {
1.96 + aRv.Throw(NS_ERROR_UNEXPECTED);
1.97 + }
1.98 +}
1.99 +
1.100 +void
1.101 +PowerManager::AddWakeLockListener(nsIDOMMozWakeLockListener *aListener)
1.102 +{
1.103 + if (!mListeners.Contains(aListener)) {
1.104 + mListeners.AppendElement(aListener);
1.105 + }
1.106 +}
1.107 +
1.108 +void
1.109 +PowerManager::RemoveWakeLockListener(nsIDOMMozWakeLockListener *aListener)
1.110 +{
1.111 + mListeners.RemoveElement(aListener);
1.112 +}
1.113 +
1.114 +void
1.115 +PowerManager::GetWakeLockState(const nsAString& aTopic,
1.116 + nsAString& aState,
1.117 + ErrorResult& aRv)
1.118 +{
1.119 + nsCOMPtr<nsIPowerManagerService> pmService =
1.120 + do_GetService(POWERMANAGERSERVICE_CONTRACTID);
1.121 + if (pmService) {
1.122 + aRv = pmService->GetWakeLockState(aTopic, aState);
1.123 + } else {
1.124 + aRv.Throw(NS_ERROR_UNEXPECTED);
1.125 + }
1.126 +}
1.127 +
1.128 +NS_IMETHODIMP
1.129 +PowerManager::Callback(const nsAString &aTopic, const nsAString &aState)
1.130 +{
1.131 + /**
1.132 + * We maintain a local listener list instead of using the global
1.133 + * list so that when the window is destroyed we don't have to
1.134 + * cleanup the mess.
1.135 + * Copy the listeners list before we walk through the callbacks
1.136 + * because the callbacks may install new listeners. We expect no
1.137 + * more than one listener per window, so it shouldn't be too long.
1.138 + */
1.139 + nsAutoTArray<nsCOMPtr<nsIDOMMozWakeLockListener>, 2> listeners(mListeners);
1.140 + for (uint32_t i = 0; i < listeners.Length(); ++i) {
1.141 + listeners[i]->Callback(aTopic, aState);
1.142 + }
1.143 +
1.144 + return NS_OK;
1.145 +}
1.146 +
1.147 +bool
1.148 +PowerManager::ScreenEnabled()
1.149 +{
1.150 + return hal::GetScreenEnabled();
1.151 +}
1.152 +
1.153 +void
1.154 +PowerManager::SetScreenEnabled(bool aEnabled)
1.155 +{
1.156 + hal::SetScreenEnabled(aEnabled);
1.157 +}
1.158 +
1.159 +double
1.160 +PowerManager::ScreenBrightness()
1.161 +{
1.162 + return hal::GetScreenBrightness();
1.163 +}
1.164 +
1.165 +void
1.166 +PowerManager::SetScreenBrightness(double aBrightness, ErrorResult& aRv)
1.167 +{
1.168 + if (0 <= aBrightness && aBrightness <= 1) {
1.169 + hal::SetScreenBrightness(aBrightness);
1.170 + } else {
1.171 + aRv.Throw(NS_ERROR_INVALID_ARG);
1.172 + }
1.173 +}
1.174 +
1.175 +bool
1.176 +PowerManager::CpuSleepAllowed()
1.177 +{
1.178 + return hal::GetCpuSleepAllowed();
1.179 +}
1.180 +
1.181 +void
1.182 +PowerManager::SetCpuSleepAllowed(bool aAllowed)
1.183 +{
1.184 + hal::SetCpuSleepAllowed(aAllowed);
1.185 +}
1.186 +
1.187 +bool
1.188 +PowerManager::CheckPermission(nsPIDOMWindow* aWindow)
1.189 +{
1.190 + nsCOMPtr<nsIPermissionManager> permMgr =
1.191 + do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
1.192 + NS_ENSURE_TRUE(permMgr, false);
1.193 +
1.194 + uint32_t permission = nsIPermissionManager::DENY_ACTION;
1.195 + permMgr->TestPermissionFromWindow(aWindow, "power", &permission);
1.196 +
1.197 + return permission == nsIPermissionManager::ALLOW_ACTION;
1.198 +}
1.199 +
1.200 +already_AddRefed<PowerManager>
1.201 +PowerManager::CreateInstance(nsPIDOMWindow* aWindow)
1.202 +{
1.203 + nsRefPtr<PowerManager> powerManager = new PowerManager();
1.204 + if (NS_FAILED(powerManager->Init(aWindow))) {
1.205 + powerManager = nullptr;
1.206 + }
1.207 +
1.208 + return powerManager.forget();
1.209 +}
1.210 +
1.211 +} // dom
1.212 +} // mozilla
