void
ScreenOrientation::Notify(const hal::ScreenConfiguration& aConfiguration)
{
if (ShouldResistFingerprinting()) {
return;
}
nsIDocument* doc = GetResponsibleDocument();
if (!doc) {
return;
}
ScreenOrientationInternal orientation = aConfiguration.orientation();
if (orientation != eScreenOrientation_PortraitPrimary &&
orientation != eScreenOrientation_PortraitSecondary &&
orientation != eScreenOrientation_LandscapePrimary &&
orientation != eScreenOrientation_LandscapeSecondary) {
// The platform may notify of some other values from
// an orientation lock, but we only care about real
// changes to screen orientation which result in one of
// the values we care about.
return;
}
OrientationType previousOrientation = mType;
mAngle = aConfiguration.angle();
mType = InternalOrientationToType(orientation);
DebugOnly<nsresult> rv;
if (mScreen && mType != previousOrientation) {
// Use of mozorientationchange is deprecated.
rv = mScreen->DispatchTrustedEvent(NS_LITERAL_STRING("mozorientationchange"));
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "DispatchTrustedEvent failed");
}
if (doc->Hidden() && !mVisibleListener) {
mVisibleListener = new VisibleEventListener();
rv = doc->AddSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
mVisibleListener, /* useCapture = */ true);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "AddSystemEventListener failed");
return;
}
if (mType != doc->CurrentOrientationType()) {
doc->SetCurrentOrientation(mType, mAngle);
Promise* pendingPromise = doc->GetOrientationPendingPromise();
if (pendingPromise) {
pendingPromise->MaybeResolveWithUndefined();
doc->SetOrientationPendingPromise(nullptr);
}
nsCOMPtr<nsIRunnable> runnable = NewRunnableMethod(this,
&ScreenOrientation::DispatchChangeEvent);
rv = NS_DispatchToMainThread(runnable);
NS_WARNING_ASSERTION(NS_SUCCEEDED(rv), "NS_DispatchToMainThread failed");
}
}
NS_IMETHODIMP
ScreenOrientation::VisibleEventListener::HandleEvent(nsIDOMEvent* aEvent)
{
// Document may have become visible, if the page is visible, run the steps
// following the "now visible algorithm" as specified.
nsCOMPtr<EventTarget> target = aEvent->InternalDOMEvent()->GetCurrentTarget();
MOZ_ASSERT(target);
nsCOMPtr<nsIDocument> doc = do_QueryInterface(target);
if (!doc || doc->Hidden()) {
return NS_OK;
}
auto* win = nsGlobalWindow::Cast(doc->GetInnerWindow());
if (!win) {
return NS_OK;
}
ErrorResult rv;
nsScreen* screen = win->GetScreen(rv);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
MOZ_ASSERT(screen);
ScreenOrientation* orientation = screen->Orientation();
MOZ_ASSERT(orientation);
rv = target->RemoveSystemEventListener(NS_LITERAL_STRING("visibilitychange"),
this, true);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
if (doc->CurrentOrientationType() != orientation->DeviceType(CallerType::System)) {
doc->SetCurrentOrientation(orientation->DeviceType(CallerType::System),
orientation->DeviceAngle(CallerType::System));
Promise* pendingPromise = doc->GetOrientationPendingPromise();
if (pendingPromise) {
pendingPromise->MaybeResolveWithUndefined();
doc->SetOrientationPendingPromise(nullptr);
}
nsCOMPtr<nsIRunnable> runnable = NewRunnableMethod(orientation,
&ScreenOrientation::DispatchChangeEvent);
rv = NS_DispatchToMainThread(runnable);
if (NS_WARN_IF(rv.Failed())) {
return rv.StealNSResult();
}
}
return NS_OK;
}
void
AudioContext::OnStateChanged(void* aPromise, AudioContextState aNewState)
{
MOZ_ASSERT(NS_IsMainThread());
// This can happen if close() was called right after creating the
// AudioContext, before the context has switched to "running".
if (mAudioContextState == AudioContextState::Closed &&
aNewState == AudioContextState::Running &&
!aPromise) {
return;
}
// This can happen if this is called in reaction to a
// MediaStreamGraph shutdown, and a AudioContext was being
// suspended at the same time, for example if a page was being
// closed.
if (mAudioContextState == AudioContextState::Closed &&
aNewState == AudioContextState::Suspended) {
return;
}
#ifndef WIN32 // Bug 1170547
#ifndef XP_MACOSX
#ifdef DEBUG
if (!((mAudioContextState == AudioContextState::Suspended &&
aNewState == AudioContextState::Running) ||
(mAudioContextState == AudioContextState::Running &&
aNewState == AudioContextState::Suspended) ||
(mAudioContextState == AudioContextState::Running &&
aNewState == AudioContextState::Closed) ||
(mAudioContextState == AudioContextState::Suspended &&
aNewState == AudioContextState::Closed) ||
(mAudioContextState == aNewState))) {
fprintf(stderr,
"Invalid transition: mAudioContextState: %d -> aNewState %d\n",
static_cast<int>(mAudioContextState), static_cast<int>(aNewState));
MOZ_ASSERT(false);
}
#endif // DEBUG
#endif // XP_MACOSX
#endif // WIN32
MOZ_ASSERT(
mIsOffline || aPromise || aNewState == AudioContextState::Running,
"We should have a promise here if this is a real-time AudioContext."
"Or this is the first time we switch to \"running\".");
if (aPromise) {
Promise* promise = reinterpret_cast<Promise*>(aPromise);
promise->MaybeResolveWithUndefined();
DebugOnly<bool> rv = mPromiseGripArray.RemoveElement(promise);
MOZ_ASSERT(rv, "Promise wasn't in the grip array?");
}
if (mAudioContextState != aNewState) {
RefPtr<OnStateChangeTask> onStateChangeTask =
new OnStateChangeTask(this);
NS_DispatchToMainThread(onStateChangeTask);
}
mAudioContextState = aNewState;
}