void LayoutTreeBuilderForElement::createLayoutObject()
{
ComputedStyle& style = this->style();
LayoutObject* newLayoutObject = m_node->createLayoutObject(style);
if (!newLayoutObject)
return;
LayoutObject* parentLayoutObject = this->parentLayoutObject();
if (!parentLayoutObject->isChildAllowed(newLayoutObject, style)) {
newLayoutObject->destroy();
return;
}
// Make sure the LayoutObject already knows it is going to be added to a LayoutFlowThread before we set the style
// for the first time. Otherwise code using inLayoutFlowThread() in the styleWillChange and styleDidChange will fail.
newLayoutObject->setIsInsideFlowThread(parentLayoutObject->isInsideFlowThread());
LayoutObject* nextLayoutObject = this->nextLayoutObject();
m_node->setLayoutObject(newLayoutObject);
newLayoutObject->setStyle(&style); // setStyle() can depend on layoutObject() already being set.
if (Fullscreen::isActiveFullScreenElement(*m_node)) {
newLayoutObject = LayoutFullScreen::wrapLayoutObject(newLayoutObject, parentLayoutObject, &m_node->document());
if (!newLayoutObject)
return;
}
// Note: Adding newLayoutObject instead of layoutObject(). layoutObject() may be a child of newLayoutObject.
parentLayoutObject->addChild(newLayoutObject, nextLayoutObject);
}
void PseudoElement::attach(const AttachContext& context)
{
ASSERT(!layoutObject());
Element::attach(context);
LayoutObject* renderer = this->layoutObject();
if (!renderer)
return;
ComputedStyle& style = renderer->mutableStyleRef();
if (style.styleType() != BEFORE && style.styleType() != AFTER)
return;
ASSERT(style.contentData());
for (const ContentData* content = style.contentData(); content; content = content->next()) {
LayoutObject* child = content->createLayoutObject(document(), style);
if (renderer->isChildAllowed(child, style)) {
renderer->addChild(child);
if (child->isQuote())
toLayoutQuote(child)->attachQuote();
} else
child->destroy();
}
}
void PseudoElement::attachLayoutTree(const AttachContext& context) {
DCHECK(!layoutObject());
Element::attachLayoutTree(context);
LayoutObject* layoutObject = this->layoutObject();
if (!layoutObject)
return;
ComputedStyle& style = layoutObject->mutableStyleRef();
if (style.styleType() != PseudoIdBefore && style.styleType() != PseudoIdAfter)
return;
DCHECK(style.contentData());
for (const ContentData* content = style.contentData(); content;
content = content->next()) {
LayoutObject* child = content->createLayoutObject(document(), style);
if (layoutObject->isChildAllowed(child, style)) {
layoutObject->addChild(child);
if (child->isQuote())
toLayoutQuote(child)->attachQuote();
} else {
child->destroy();
}
}
}
