void FlowThreadController::updateFlowThreadsIntoOverflowPhase()
{
for (auto iter = m_renderNamedFlowThreadList->rbegin(), end = m_renderNamedFlowThreadList->rend(); iter != end; ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
ASSERT(!flowRenderer->hasRegions() || flowRenderer->hasValidRegionInfo());
ASSERT(!flowRenderer->needsTwoPhasesLayout());
// In the overflow computation phase the flow threads start in the constrained phase even though optimizations didn't set the state before.
flowRenderer->setLayoutPhase(RenderFlowThread::LayoutPhaseConstrained);
flowRenderer->layoutIfNeeded();
flowRenderer->markRegionsForOverflowLayoutIfNeeded();
flowRenderer->setLayoutPhase(RenderFlowThread::LayoutPhaseOverflow);
}
}
void FlowThreadController::updateFlowThreadsIntoConstrainedPhase()
{
// Walk the flow chain in reverse order to update the auto-height regions and compute correct sizes for the containing regions. Only after this we can
// set the flow in the constrained layout phase.
for (RenderNamedFlowThreadList::reverse_iterator iter = m_renderNamedFlowThreadList->rbegin(); iter != m_renderNamedFlowThreadList->rend(); ++iter) {
RenderNamedFlowThread* flowRenderer = *iter;
ASSERT(!flowRenderer->hasRegions() || flowRenderer->hasValidRegionInfo());
flowRenderer->layoutIfNeeded();
if (flowRenderer->hasAutoLogicalHeightRegions()) {
ASSERT(flowRenderer->needsTwoPhasesLayout());
flowRenderer->markAutoLogicalHeightRegionsForLayout();
}
flowRenderer->setInConstrainedLayoutPhase(true);
flowRenderer->clearNeedsTwoPhasesLayout();
}
}