HTMLTextFormControlElement* enclosingTextFormControl(const Position& position)
{
ASSERT(position.isNull() || position.anchorType() == Position::PositionIsOffsetInAnchor
|| position.containerNode() || !position.anchorNode()->shadowAncestorNode());
Node* container = position.containerNode();
if (!container)
return 0;
Node* ancestor = container->shadowAncestorNode();
return ancestor != container ? toTextFormControl(ancestor) : 0;
}
RenderObject* RenderTextControl::layoutSpecialExcludedChild(bool relayoutChildren)
{
HTMLElement* placeholder = toTextFormControl(node())->placeholderElement();
RenderObject* placeholderRenderer = placeholder ? placeholder->renderer() : 0;
if (!placeholderRenderer)
return 0;
if (relayoutChildren) {
// The markParents arguments should be false because this function is
// called from layout() of the parent and the placeholder layout doesn't
// affect the parent layout.
placeholderRenderer->setChildNeedsLayout(true, false);
}
return placeholderRenderer;
}
RenderTextControl::RenderTextControl(Node* node)
: RenderBlock(node)
{
ASSERT(toTextFormControl(node));
}
