const AtomicString& ScreenOrientation::orientation(Screen* screen)
{
ScreenOrientation* screenOrientation = ScreenOrientation::from(screen);
ScreenOrientationController* controller = ScreenOrientationController::from(screenOrientation->document());
ASSERT(controller);
return orientationToString(controller->orientation());
}
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;
}
// static
ScreenOrientation* ScreenOrientation::create(LocalFrame* frame)
{
ASSERT(frame);
ScreenOrientation* orientation = adoptRefCountedGarbageCollectedWillBeNoop(new ScreenOrientation(frame));
ASSERT(orientation->controller());
// FIXME: ideally, we would like to provide the ScreenOrientationController
// the case where it is not defined but for the moment, it is eagerly
// created when the LocalFrame is created so we shouldn't be in that
// situtaion.
// In order to create the ScreenOrientationController lazily, we would need
// to be able to access WebFrameClient from modules/.
orientation->controller()->setOrientation(orientation);
return orientation;
}
// static
ScreenOrientation* ScreenOrientation::create(LocalFrame* frame)
{
ASSERT(frame);
// Check if the ScreenOrientationController is supported for the
// frame. It will not be for all LocalFrames, or the frame may
// have been detached.
if (!ScreenOrientationController::from(*frame))
return nullptr;
ScreenOrientation* orientation = new ScreenOrientation(frame);
ASSERT(orientation->controller());
// FIXME: ideally, we would like to provide the ScreenOrientationController
// the case where it is not defined but for the moment, it is eagerly
// created when the LocalFrame is created so we shouldn't be in that
// situation.
// In order to create the ScreenOrientationController lazily, we would need
// to be able to access WebFrameClient from modules/.
orientation->controller()->setOrientation(orientation);
return orientation;
}
