The Tor Browser: comparison dom/speakermanager/SpeakerManager.cpp

--1:000000000000
+:3c6a80cef56a
+/* 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/. */
+#include "SpeakerManager.h"
+#include "nsIDOMClassInfo.h"
+#include "nsIDOMEvent.h"
+#include "nsIDOMEventListener.h"
+#include "SpeakerManagerService.h"
+#include "nsIPermissionManager.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsIDocShell.h"
+#include "AudioChannelService.h"
+namespace mozilla {
+namespace dom {
+NS_IMPL_QUERY_INTERFACE_INHERITED(SpeakerManager, DOMEventTargetHelper,
+nsIDOMEventListener)
+NS_IMPL_ADDREF_INHERITED(SpeakerManager, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(SpeakerManager, DOMEventTargetHelper)
+SpeakerManager::SpeakerManager()
+: mForcespeaker(false)
+, mVisible(false)
+{
+SetIsDOMBinding();
+SpeakerManagerService *service =
+SpeakerManagerService::GetSpeakerManagerService();
+if (service) {
+service->RegisterSpeakerManager(this);
+}
+}
+SpeakerManager::~SpeakerManager()
+{
+SpeakerManagerService *service = SpeakerManagerService::GetSpeakerManagerService();
+if (service) {
+service->UnRegisterSpeakerManager(this);
+}
+nsCOMPtr<EventTarget> target = do_QueryInterface(GetOwner());
+NS_ENSURE_TRUE_VOID(target);
+target->RemoveSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
+this,
+/* useCapture = */ true);
+}
+bool
+SpeakerManager::Speakerforced()
+{
+// If a background app calls forcespeaker=true that doesn't change anything.
+// 'speakerforced' remains false everywhere.
+if (mForcespeaker && !mVisible) {
+return false;
+}
+SpeakerManagerService *service = SpeakerManagerService::GetSpeakerManagerService();
+if (service) {
+return service->GetSpeakerStatus();
+}
+return false;
+}
+bool
+SpeakerManager::Forcespeaker()
+{
+return mForcespeaker;
+}
+void
+SpeakerManager::SetForcespeaker(bool aEnable)
+{
+SpeakerManagerService *service = SpeakerManagerService::GetSpeakerManagerService();
+if (service) {
+service->ForceSpeaker(aEnable, mVisible);
+}
+mForcespeaker = aEnable;
+}
+void
+SpeakerManager::DispatchSimpleEvent(const nsAString& aStr)
+{
+NS_ABORT_IF_FALSE(NS_IsMainThread(), "Not running on main thread");
+nsresult rv = CheckInnerWindowCorrectness();
+if (NS_FAILED(rv)) {
+return;
+}
+nsCOMPtr<nsIDOMEvent> event;
+rv = NS_NewDOMEvent(getter_AddRefs(event), this, nullptr, nullptr);
+if (NS_FAILED(rv)) {
+NS_WARNING("Failed to create the error event!!!");
+return;
+}
+rv = event->InitEvent(aStr, false, false);
+if (NS_FAILED(rv)) {
+NS_WARNING("Failed to init the error event!!!");
+return;
+}
+event->SetTrusted(true);
+rv = DispatchDOMEvent(nullptr, event, nullptr, nullptr);
+if (NS_FAILED(rv)) {
+NS_ERROR("Failed to dispatch the event!!!");
+return;
+}
+}
+void
+SpeakerManager::Init(nsPIDOMWindow* aWindow)
+{
+BindToOwner(aWindow);
+nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
+NS_ENSURE_TRUE_VOID(docshell);
+docshell->GetIsActive(&mVisible);
+nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(GetOwner());
+NS_ENSURE_TRUE_VOID(target);
+target->AddSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
+this,
+/* useCapture = */ true,
+/* wantsUntrusted = */ false);
+}
+nsPIDOMWindow*
+SpeakerManager::GetParentObject() const
+{
+return GetOwner();
+}
+/* static */ already_AddRefed<SpeakerManager>
+SpeakerManager::Constructor(const GlobalObject& aGlobal, ErrorResult& aRv)
+{
+nsCOMPtr<nsIScriptGlobalObject> sgo = do_QueryInterface(aGlobal.GetAsSupports());
+if (!sgo) {
+aRv.Throw(NS_ERROR_FAILURE);
+return nullptr;
+}
+nsCOMPtr<nsPIDOMWindow> ownerWindow = do_QueryInterface(aGlobal.GetAsSupports());
+if (!ownerWindow) {
+aRv.Throw(NS_ERROR_FAILURE);
+return nullptr;
+}
+nsCOMPtr<nsIPermissionManager> permMgr =
+do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
+NS_ENSURE_TRUE(permMgr, nullptr);
+uint32_t permission = nsIPermissionManager::DENY_ACTION;
+nsresult rv =
+permMgr->TestPermissionFromWindow(ownerWindow, "speaker-control",
+&permission);
+NS_ENSURE_SUCCESS(rv, nullptr);
+if (permission != nsIPermissionManager::ALLOW_ACTION) {
+aRv.Throw(NS_ERROR_DOM_SECURITY_ERR);
+return nullptr;
+}
+nsRefPtr<SpeakerManager> object = new SpeakerManager();
+object->Init(ownerWindow);
+return object.forget();
+}
+JSObject*
+SpeakerManager::WrapObject(JSContext* aCx)
+{
+return MozSpeakerManagerBinding::Wrap(aCx, this);
+}
+NS_IMETHODIMP
+SpeakerManager::HandleEvent(nsIDOMEvent* aEvent)
+{
+nsAutoString type;
+aEvent->GetType(type);
+if (!type.EqualsLiteral("visibilitychange")) {
+return NS_ERROR_FAILURE;
+}
+nsCOMPtr<nsIDocShell> docshell = do_GetInterface(GetOwner());
+NS_ENSURE_TRUE(docshell, NS_ERROR_FAILURE);
+docshell->GetIsActive(&mVisible);
+// If an app that has called forcespeaker=true is switched
+// from the background to the foreground 'speakerforced'
+// switches to true in all apps. I.e. the app doesn't have to
+// call forcespeaker=true again when it comes into foreground.
+SpeakerManagerService *service =
+SpeakerManagerService::GetSpeakerManagerService();
+if (service && mVisible && mForcespeaker) {
+service->ForceSpeaker(mForcespeaker, mVisible);
+}
+// If an application that has called forcespeaker=true, but no audio is
+// currently playing in the app itself, if application switch to
+// the background, we switch 'speakerforced' to false.
+if (!mVisible && mForcespeaker) {
+AudioChannelService* audioChannelService =
+AudioChannelService::GetAudioChannelService();
+if (audioChannelService && !audioChannelService->AnyAudioChannelIsActive()) {
+service->ForceSpeaker(false, mVisible);
+}
+}
+return NS_OK;
+}
+void
+SpeakerManager::SetAudioChannelActive(bool isActive)
+{
+if (!isActive && !mVisible) {
+SpeakerManagerService *service =
+SpeakerManagerService::GetSpeakerManagerService();
+if (service) {
+service->ForceSpeaker(false, mVisible);
+}
+}
+}
+} // namespace dom
+} // namespace mozilla

The Tor Browser / file comparison

comparison: dom/speakermanager/SpeakerManager.cpp

dom/speakermanager/SpeakerManager.cpp