void
APZEventState::ProcessAPZStateChange(const nsCOMPtr<nsIDocument>& aDocument,
ViewID aViewId,
APZStateChange aChange,
int aArg)
{
switch (aChange)
{
case APZStateChange::TransformBegin:
{
nsIScrollableFrame* sf = nsLayoutUtils::FindScrollableFrameFor(aViewId);
if (sf) {
sf->SetTransformingByAPZ(true);
}
nsIScrollbarMediator* scrollbarMediator = do_QueryFrame(sf);
if (scrollbarMediator) {
scrollbarMediator->ScrollbarActivityStarted();
}
if (aDocument && mActiveAPZTransforms == 0) {
nsCOMPtr<nsIDocShell> docshell(aDocument->GetDocShell());
if (docshell && sf) {
nsDocShell* nsdocshell = static_cast<nsDocShell*>(docshell.get());
nsdocshell->NotifyAsyncPanZoomStarted();
}
}
mActiveAPZTransforms++;
break;
}
case APZStateChange::TransformEnd:
{
mActiveAPZTransforms--;
nsIScrollableFrame* sf = nsLayoutUtils::FindScrollableFrameFor(aViewId);
if (sf) {
sf->SetTransformingByAPZ(false);
}
nsIScrollbarMediator* scrollbarMediator = do_QueryFrame(sf);
if (scrollbarMediator) {
scrollbarMediator->ScrollbarActivityStopped();
}
if (aDocument && mActiveAPZTransforms == 0) {
nsCOMPtr<nsIDocShell> docshell(aDocument->GetDocShell());
if (docshell && sf) {
nsDocShell* nsdocshell = static_cast<nsDocShell*>(docshell.get());
nsdocshell->NotifyAsyncPanZoomStopped();
}
}
break;
}
case APZStateChange::StartTouch:
{
mActiveElementManager->HandleTouchStart(aArg);
break;
}
case APZStateChange::StartPanning:
{
mActiveElementManager->HandlePanStart();
break;
}
case APZStateChange::EndTouch:
{
mEndTouchIsClick = aArg;
mActiveElementManager->HandleTouchEnd();
break;
}
default:
// APZStateChange has a 'sentinel' value, and the compiler complains
// if an enumerator is not handled and there is no 'default' case.
break;
}
}
nsIDocShell *
Location::GetDocShell()
{
nsCOMPtr<nsIDocShell> docshell(do_QueryReferent(mDocShell));
return docshell;
}
void
APZEventState::ProcessAPZStateChange(ViewID aViewId,
APZStateChange aChange,
int aArg)
{
switch (aChange)
{
case APZStateChange::eTransformBegin:
{
nsIScrollableFrame* sf = nsLayoutUtils::FindScrollableFrameFor(aViewId);
if (sf) {
sf->SetTransformingByAPZ(true);
}
nsIScrollbarMediator* scrollbarMediator = do_QueryFrame(sf);
if (scrollbarMediator) {
scrollbarMediator->ScrollbarActivityStarted();
}
nsIContent* content = nsLayoutUtils::FindContentFor(aViewId);
nsIDocument* doc = content ? content->GetComposedDoc() : nullptr;
nsCOMPtr<nsIDocShell> docshell(doc ? doc->GetDocShell() : nullptr);
if (docshell && sf) {
nsDocShell* nsdocshell = static_cast<nsDocShell*>(docshell.get());
nsdocshell->NotifyAsyncPanZoomStarted();
}
break;
}
case APZStateChange::eTransformEnd:
{
nsIScrollableFrame* sf = nsLayoutUtils::FindScrollableFrameFor(aViewId);
if (sf) {
sf->SetTransformingByAPZ(false);
}
nsIScrollbarMediator* scrollbarMediator = do_QueryFrame(sf);
if (scrollbarMediator) {
scrollbarMediator->ScrollbarActivityStopped();
}
nsIContent* content = nsLayoutUtils::FindContentFor(aViewId);
nsIDocument* doc = content ? content->GetComposedDoc() : nullptr;
nsCOMPtr<nsIDocShell> docshell(doc ? doc->GetDocShell() : nullptr);
if (docshell && sf) {
nsDocShell* nsdocshell = static_cast<nsDocShell*>(docshell.get());
nsdocshell->NotifyAsyncPanZoomStopped();
}
break;
}
case APZStateChange::eStartTouch:
{
mActiveElementManager->HandleTouchStart(aArg);
break;
}
case APZStateChange::eStartPanning:
{
// The user started to pan, so we don't want anything to be :active.
mActiveElementManager->ClearActivation();
break;
}
case APZStateChange::eEndTouch:
{
mEndTouchIsClick = aArg;
mActiveElementManager->HandleTouchEnd();
break;
}
case APZStateChange::eSentinel:
// Should never happen, but we want this case branch to stop the compiler
// whining about unhandled values.
MOZ_ASSERT(false);
break;
}
}
