WheelBlockState::WheelBlockState(const RefPtr<AsyncPanZoomController>& aTargetApzc,
bool aTargetConfirmed,
const ScrollWheelInput& aInitialEvent)
: CancelableBlockState(aTargetApzc, aTargetConfirmed)
, mScrollSeriesCounter(0)
, mTransactionEnded(false)
{
sLastWheelBlockId = GetBlockId();
if (aTargetConfirmed) {
// Find the nearest APZC in the overscroll handoff chain that is scrollable.
// If we get a content confirmation later that the apzc is different, then
// content should have found a scrollable apzc, so we don't need to handle
// that case.
RefPtr<AsyncPanZoomController> apzc =
mOverscrollHandoffChain->FindFirstScrollable(aInitialEvent);
// If nothing is scrollable, we don't consider this block as starting a
// transaction.
if (!apzc) {
EndTransaction();
return;
}
if (apzc != GetTargetApzc()) {
UpdateTargetApzc(apzc);
}
}
}
PanGestureBlockState::PanGestureBlockState(const RefPtr<AsyncPanZoomController>& aTargetApzc,
bool aTargetConfirmed,
const PanGestureInput& aInitialEvent)
: CancelableBlockState(aTargetApzc, aTargetConfirmed)
, mInterrupted(false)
, mWaitingForContentResponse(false)
{
if (aTargetConfirmed) {
// Find the nearest APZC in the overscroll handoff chain that is scrollable.
// If we get a content confirmation later that the apzc is different, then
// content should have found a scrollable apzc, so we don't need to handle
// that case.
RefPtr<AsyncPanZoomController> apzc =
mOverscrollHandoffChain->FindFirstScrollable(aInitialEvent);
if (apzc && apzc != GetTargetApzc()) {
UpdateTargetApzc(apzc);
}
}
}
bool
InputBlockState::SetConfirmedTargetApzc(const RefPtr<AsyncPanZoomController>& aTargetApzc)
{
if (mTargetConfirmed) {
return false;
}
mTargetConfirmed = true;
TBS_LOG("%p got confirmed target APZC %p\n", this, mTargetApzc.get());
if (mTargetApzc == aTargetApzc) {
// The confirmed target is the same as the tentative one, so we're done.
return true;
}
TBS_LOG("%p replacing unconfirmed target %p with real target %p\n",
this, mTargetApzc.get(), aTargetApzc.get());
UpdateTargetApzc(aTargetApzc);
return true;
}
bool
InputBlockState::SetConfirmedTargetApzc(const nsRefPtr<AsyncPanZoomController>& aTargetApzc)
{
if (mTargetConfirmed) {
return false;
}
mTargetConfirmed = true;
TBS_LOG("%p got confirmed target APZC %p\n", this, mTargetApzc.get());
if (mTargetApzc == aTargetApzc) {
// The confirmed target is the same as the tentative one, so we're done.
return true;
}
// Log enabled by default for now, we will put it in a TBS_LOG eventually
// once this code is more baked
printf_stderr("%p replacing unconfirmed target %p with real target %p\n",
this, mTargetApzc.get(), aTargetApzc.get());
UpdateTargetApzc(aTargetApzc);
return true;
}
