void Text::reattachIfNeeded(const AttachContext& context)
{
bool layoutObjectIsNeeded = false;
ContainerNode* layoutParent = LayoutTreeBuilderTraversal::parent(*this);
if (layoutParent) {
if (LayoutObject* parentLayoutObject = layoutParent->layoutObject()) {
if (textLayoutObjectIsNeeded(*parentLayoutObject->style(), *parentLayoutObject))
layoutObjectIsNeeded = true;
}
}
if (layoutObjectIsNeeded == !!layoutObject())
return;
// The following is almost the same as Node::reattach() except that we create a layoutObject only if needed.
// Not calling reattach() to avoid repeated calls to Text::textLayoutObjectIsNeeded().
AttachContext reattachContext(context);
reattachContext.performingReattach = true;
if (getStyleChangeType() < NeedsReattachStyleChange)
detach(reattachContext);
if (layoutObjectIsNeeded)
LayoutTreeBuilderForText(*this, layoutParent->layoutObject()).createLayoutObject();
CharacterData::attach(reattachContext);
}
void Text::attach(const AttachContext& context)
{
if (ContainerNode* layoutParent = LayoutTreeBuilderTraversal::parent(*this)) {
if (LayoutObject* parentLayoutObject = layoutParent->layoutObject()) {
if (textLayoutObjectIsNeeded(*parentLayoutObject->style(), *parentLayoutObject))
LayoutTreeBuilderForText(*this, parentLayoutObject).createLayoutObject();
}
}
CharacterData::attach(context);
}
void Text::updateTextLayoutObject(unsigned offsetOfReplacedData, unsigned lengthOfReplacedData, RecalcStyleBehavior recalcStyleBehavior)
{
if (!inActiveDocument())
return;
LayoutText* textLayoutObject = layoutObject();
if (!textLayoutObject || !textLayoutObjectIsNeeded(*textLayoutObject->style(), *textLayoutObject->parent())) {
lazyReattachIfAttached();
// FIXME: Editing should be updated so this is not neccesary.
if (recalcStyleBehavior == DeprecatedRecalcStyleImmediatlelyForEditing)
document().updateLayoutTreeIfNeeded();
return;
}
textLayoutObject->setTextWithOffset(dataImpl(), offsetOfReplacedData, lengthOfReplacedData);
}