void RenderTreeUpdater::createRenderer(Element& element, RenderStyle&& style)
{
if (!shouldCreateRenderer(element, renderTreePosition().parent()))
return;
RenderNamedFlowThread* parentFlowRenderer = nullptr;
#if ENABLE(CSS_REGIONS)
parentFlowRenderer = moveToFlowThreadIfNeeded(element, style);
#endif
if (!element.rendererIsNeeded(style))
return;
renderTreePosition().computeNextSibling(element);
RenderTreePosition insertionPosition = parentFlowRenderer
? RenderTreePosition(*parentFlowRenderer, parentFlowRenderer->nextRendererForElement(element))
: renderTreePosition();
RenderElement* newRenderer = element.createElementRenderer(WTFMove(style), insertionPosition).leakPtr();
if (!newRenderer)
return;
if (!insertionPosition.canInsert(*newRenderer)) {
newRenderer->destroy();
return;
}
// Make sure the RenderObject already knows it is going to be added to a RenderFlowThread before we set the style
// for the first time. Otherwise code using inRenderFlowThread() in the styleWillChange and styleDidChange will fail.
newRenderer->setFlowThreadState(insertionPosition.parent().flowThreadState());
element.setRenderer(newRenderer);
auto& initialStyle = newRenderer->style();
std::unique_ptr<RenderStyle> animatedStyle;
newRenderer->animation().updateAnimations(*newRenderer, initialStyle, animatedStyle);
if (animatedStyle)
newRenderer->setStyleInternal(WTFMove(*animatedStyle));
newRenderer->initializeStyle();
#if ENABLE(FULLSCREEN_API)
if (m_document.webkitIsFullScreen() && m_document.webkitCurrentFullScreenElement() == &element) {
newRenderer = RenderFullScreen::wrapRenderer(newRenderer, &insertionPosition.parent(), m_document);
if (!newRenderer)
return;
}
#endif
// Note: Adding newRenderer instead of renderer(). renderer() may be a child of newRenderer.
insertionPosition.insert(*newRenderer);
if (AXObjectCache* cache = m_document.axObjectCache())
cache->updateCacheAfterNodeIsAttached(&element);
}
RenderTreeUpdater::Parent::Parent(Element& element, Style::Change styleChange)
: element(&element)
, styleChange(styleChange)
, renderTreePosition(element.renderer() ? std::make_optional(RenderTreePosition(*element.renderer())) : std::nullopt)
{
}
RenderTreeUpdater::Parent::Parent(ContainerNode& root)
: element(is<Document>(root) ? nullptr : downcast<Element>(&root))
, renderTreePosition(RenderTreePosition(*root.renderer()))
{
}
