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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/Services.h"
#include "mozilla/dom/Event.h"
#include "AudioChannelService.h"
#include "nsIDocShell.h"
#include "nsIDOMClassInfo.h"
#include "nsIDOMEventListener.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIPermissionManager.h"
#include "SpeakerManagerService.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)
{
SpeakerManagerService *service =
SpeakerManagerService::GetOrCreateSpeakerManagerService();
MOZ_ASSERT(service);
service->RegisterSpeakerManager(this);
}
SpeakerManager::~SpeakerManager()
{
SpeakerManagerService *service = SpeakerManagerService::GetOrCreateSpeakerManagerService();
MOZ_ASSERT(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::GetOrCreateSpeakerManagerService();
MOZ_ASSERT(service);
return service->GetSpeakerStatus();
}
bool
SpeakerManager::Forcespeaker()
{
return mForcespeaker;
}
void
SpeakerManager::SetForcespeaker(bool aEnable)
{
SpeakerManagerService *service = SpeakerManagerService::GetOrCreateSpeakerManagerService();
MOZ_ASSERT(service);
service->ForceSpeaker(aEnable, mVisible);
mForcespeaker = aEnable;
}
void
SpeakerManager::DispatchSimpleEvent(const nsAString& aStr)
{
MOZ_ASSERT(NS_IsMainThread(), "Not running on main thread");
nsresult rv = CheckInnerWindowCorrectness();
if (NS_FAILED(rv)) {
return;
}
RefPtr<Event> event = NS_NewDOMEvent(this, nullptr, nullptr);
event->InitEvent(aStr, false, false);
event->SetTrusted(true);
rv = DispatchDOMEvent(nullptr, event, nullptr, nullptr);
if (NS_FAILED(rv)) {
NS_ERROR("Failed to dispatch the event!!!");
return;
}
}
void
SpeakerManager::Init(nsPIDOMWindowInner* aWindow)
{
BindToOwner(aWindow);
nsCOMPtr<nsIDocShell> docshell = GetOwner()->GetDocShell();
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);
}
nsPIDOMWindowInner*
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<nsPIDOMWindowInner> ownerWindow = do_QueryInterface(aGlobal.GetAsSupports());
if (!ownerWindow) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
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;
}
RefPtr<SpeakerManager> object = new SpeakerManager();
object->Init(ownerWindow);
return object.forget();
}
JSObject*
SpeakerManager::WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto)
{
return MozSpeakerManagerBinding::Wrap(aCx, this, aGivenProto);
}
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::GetOrCreateSpeakerManagerService();
MOZ_ASSERT(service);
if (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) {
RefPtr<AudioChannelService> audioChannelService =
AudioChannelService::GetOrCreate();
if (audioChannelService && !audioChannelService->AnyAudioChannelIsActive()) {
service->ForceSpeaker(false, mVisible);
}
}
return NS_OK;
}
void
SpeakerManager::SetAudioChannelActive(bool isActive)
{
if (mForcespeaker) {
SpeakerManagerService *service =
SpeakerManagerService::GetOrCreateSpeakerManagerService();
MOZ_ASSERT(service);
service->ForceSpeaker(isActive, mVisible);
}
}
} // namespace dom
} // namespace mozilla
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