1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/speakermanager/SpeakerManager.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,225 @@
1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this file,
1.6 + * You can obtain one at http://mozilla.org/MPL/2.0/. */
1.7 +
1.8 +#include "SpeakerManager.h"
1.9 +#include "nsIDOMClassInfo.h"
1.10 +#include "nsIDOMEvent.h"
1.11 +#include "nsIDOMEventListener.h"
1.12 +#include "SpeakerManagerService.h"
1.13 +#include "nsIPermissionManager.h"
1.14 +#include "nsIInterfaceRequestorUtils.h"
1.15 +#include "nsIDocShell.h"
1.16 +#include "AudioChannelService.h"
1.17 +
1.18 +namespace mozilla {
1.19 +namespace dom {
1.20 +
1.21 +NS_IMPL_QUERY_INTERFACE_INHERITED(SpeakerManager, DOMEventTargetHelper,
1.22 + nsIDOMEventListener)
1.23 +NS_IMPL_ADDREF_INHERITED(SpeakerManager, DOMEventTargetHelper)
1.24 +NS_IMPL_RELEASE_INHERITED(SpeakerManager, DOMEventTargetHelper)
1.25 +
1.26 +SpeakerManager::SpeakerManager()
1.27 + : mForcespeaker(false)
1.28 + , mVisible(false)
1.29 +{
1.30 + SetIsDOMBinding();
1.31 + SpeakerManagerService *service =
1.32 + SpeakerManagerService::GetSpeakerManagerService();
1.33 + if (service) {
1.34 + service->RegisterSpeakerManager(this);
1.35 + }
1.36 +}
1.37 +
1.38 +SpeakerManager::~SpeakerManager()
1.39 +{
1.40 + SpeakerManagerService *service = SpeakerManagerService::GetSpeakerManagerService();
1.41 + if (service) {
1.42 + service->UnRegisterSpeakerManager(this);
1.43 + }
1.44 + nsCOMPtr<EventTarget> target = do_QueryInterface(GetOwner());
1.45 + NS_ENSURE_TRUE_VOID(target);
1.46 +
1.47 + target->RemoveSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
1.48 + this,
1.49 + /* useCapture = */ true);
1.50 +}
1.51 +
1.52 +bool
1.53 +SpeakerManager::Speakerforced()
1.54 +{
1.55 + // If a background app calls forcespeaker=true that doesn't change anything.
1.56 + // 'speakerforced' remains false everywhere.
1.57 + if (mForcespeaker && !mVisible) {
1.58 + return false;
1.59 + }
1.60 + SpeakerManagerService *service = SpeakerManagerService::GetSpeakerManagerService();
1.61 + if (service) {
1.62 + return service->GetSpeakerStatus();
1.63 + }
1.64 + return false;
1.65 +}
1.66 +
1.67 +bool
1.68 +SpeakerManager::Forcespeaker()
1.69 +{
1.70 + return mForcespeaker;
1.71 +}
1.72 +
1.73 +void
1.74 +SpeakerManager::SetForcespeaker(bool aEnable)
1.75 +{
1.76 + SpeakerManagerService *service = SpeakerManagerService::GetSpeakerManagerService();
1.77 + if (service) {
1.78 + service->ForceSpeaker(aEnable, mVisible);
1.79 + }
1.80 + mForcespeaker = aEnable;
1.81 +}
1.82 +
1.83 +void
1.84 +SpeakerManager::DispatchSimpleEvent(const nsAString& aStr)
1.85 +{
1.86 + NS_ABORT_IF_FALSE(NS_IsMainThread(), "Not running on main thread");
1.87 + nsresult rv = CheckInnerWindowCorrectness();
1.88 + if (NS_FAILED(rv)) {
1.89 + return;
1.90 + }
1.91 +
1.92 + nsCOMPtr<nsIDOMEvent> event;
1.93 + rv = NS_NewDOMEvent(getter_AddRefs(event), this, nullptr, nullptr);
1.94 + if (NS_FAILED(rv)) {
1.95 + NS_WARNING("Failed to create the error event!!!");
1.96 + return;
1.97 + }
1.98 + rv = event->InitEvent(aStr, false, false);
1.99 +
1.100 + if (NS_FAILED(rv)) {
1.101 + NS_WARNING("Failed to init the error event!!!");
1.102 + return;
1.103 + }
1.104 +
1.105 + event->SetTrusted(true);
1.106 +
1.107 + rv = DispatchDOMEvent(nullptr, event, nullptr, nullptr);
1.108 + if (NS_FAILED(rv)) {
1.109 + NS_ERROR("Failed to dispatch the event!!!");
1.110 + return;
1.111 + }
1.112 +}
1.113 +
1.114 +void
1.115 +SpeakerManager::Init(nsPIDOMWindow* aWindow)
1.116 +{
1.117 + BindToOwner(aWindow);
1.118 +
1.119 + nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
1.120 + NS_ENSURE_TRUE_VOID(docshell);
1.121 + docshell->GetIsActive(&mVisible);
1.122 +
1.123 + nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(GetOwner());
1.124 + NS_ENSURE_TRUE_VOID(target);
1.125 +
1.126 + target->AddSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
1.127 + this,
1.128 + /* useCapture = */ true,
1.129 + /* wantsUntrusted = */ false);
1.130 +}
1.131 +
1.132 +nsPIDOMWindow*
1.133 +SpeakerManager::GetParentObject() const
1.134 +{
1.135 + return GetOwner();
1.136 +}
1.137 +
1.138 +/* static */ already_AddRefed<SpeakerManager>
1.139 +SpeakerManager::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
1.140 +{
1.141 + nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(aGlobal.GetAsSupports());
1.142 + if (!sgo) {
1.143 + aRv.Throw(NS_ERROR_FAILURE);
1.144 + return nullptr;
1.145 + }
1.146 +
1.147 + nsCOMPtr<nsPIDOMWindow> ownerWindow = do_QueryInterface(aGlobal.GetAsSupports());
1.148 + if (!ownerWindow) {
1.149 + aRv.Throw(NS_ERROR_FAILURE);
1.150 + return nullptr;
1.151 + }
1.152 +
1.153 + nsCOMPtr<nsIPermissionManager> permMgr =
1.154 + do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
1.155 + NS_ENSURE_TRUE(permMgr, nullptr);
1.156 +
1.157 + uint32_t permission = nsIPermissionManager::DENY_ACTION;
1.158 + nsresult rv =
1.159 + permMgr->TestPermissionFromWindow(ownerWindow, "speaker-control",
1.160 + &permission);
1.161 + NS_ENSURE_SUCCESS(rv, nullptr);
1.162 +
1.163 + if (permission != nsIPermissionManager::ALLOW_ACTION) {
1.164 + aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
1.165 + return nullptr;
1.166 + }
1.167 +
1.168 + nsRefPtr<SpeakerManager> object = new SpeakerManager();
1.169 + object->Init(ownerWindow);
1.170 + return object.forget();
1.171 +}
1.172 +
1.173 +JSObject*
1.174 +SpeakerManager::WrapObject(JSContext* aCx)
1.175 +{
1.176 + return MozSpeakerManagerBinding::Wrap(aCx, this);
1.177 +}
1.178 +
1.179 +NS_IMETHODIMP
1.180 +SpeakerManager::HandleEvent(nsIDOMEvent* aEvent)
1.181 +{
1.182 + nsAutoString type;
1.183 + aEvent->GetType(type);
1.184 +
1.185 + if (!type.EqualsLiteral("visibilitychange")) {
1.186 + return NS_ERROR_FAILURE;
1.187 + }
1.188 +
1.189 + nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
1.190 + NS_ENSURE_TRUE(docshell, NS_ERROR_FAILURE);
1.191 + docshell->GetIsActive(&mVisible);
1.192 +
1.193 + // If an app that has called forcespeaker=true is switched
1.194 + // from the background to the foreground 'speakerforced'
1.195 + // switches to true in all apps. I.e. the app doesn't have to
1.196 + // call forcespeaker=true again when it comes into foreground.
1.197 + SpeakerManagerService *service =
1.198 + SpeakerManagerService::GetSpeakerManagerService();
1.199 + if (service && mVisible && mForcespeaker) {
1.200 + service->ForceSpeaker(mForcespeaker, mVisible);
1.201 + }
1.202 + // If an application that has called forcespeaker=true, but no audio is
1.203 + // currently playing in the app itself, if application switch to
1.204 + // the background, we switch 'speakerforced' to false.
1.205 + if (!mVisible && mForcespeaker) {
1.206 + AudioChannelService* audioChannelService =
1.207 + AudioChannelService::GetAudioChannelService();
1.208 + if (audioChannelService && !audioChannelService->AnyAudioChannelIsActive()) {
1.209 + service->ForceSpeaker(false, mVisible);
1.210 + }
1.211 + }
1.212 + return NS_OK;
1.213 +}
1.214 +
1.215 +void
1.216 +SpeakerManager::SetAudioChannelActive(bool isActive)
1.217 +{
1.218 + if (!isActive && !mVisible) {
1.219 + SpeakerManagerService *service =
1.220 + SpeakerManagerService::GetSpeakerManagerService();
1.221 + if (service) {
1.222 + service->ForceSpeaker(false, mVisible);
1.223 + }
1.224 + }
1.225 +}
1.226 +
1.227 +} // namespace dom
1.228 +} // namespace mozilla
