FormAssociatedElement.cpp [plain text]
#include "config.h"
#include "FormAssociatedElement.h"
#include "HTMLFormControlElement.h"
#include "HTMLFormElement.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "ValidityState.h"
namespace WebCore {
using namespace HTMLNames;
FormAssociatedElement::FormAssociatedElement(HTMLFormElement* form)
: m_form(form)
{
}
FormAssociatedElement::~FormAssociatedElement()
{
}
ValidityState* FormAssociatedElement::validity()
{
if (!m_validityState)
m_validityState = ValidityState::create(this);
return m_validityState.get();
}
void FormAssociatedElement::willMoveToNewOwnerDocument()
{
HTMLElement* element = toHTMLElement(this);
if (element->fastHasAttribute(formAttr))
element->document()->unregisterFormElementWithFormAttribute(this);
}
void FormAssociatedElement::insertedIntoDocument()
{
HTMLElement* element = toHTMLElement(this);
if (element->fastHasAttribute(formAttr))
element->document()->registerFormElementWithFormAttribute(this);
}
void FormAssociatedElement::removedFromDocument()
{
HTMLElement* element = toHTMLElement(this);
if (element->fastHasAttribute(formAttr))
element->document()->unregisterFormElementWithFormAttribute(this);
}
void FormAssociatedElement::insertedIntoTree()
{
HTMLElement* element = toHTMLElement(this);
if (element->fastHasAttribute(formAttr)) {
Element* formElement = element->treeScope()->getElementById(element->fastGetAttribute(formAttr));
if (formElement && formElement->hasTagName(formTag)) {
if (m_form)
m_form->removeFormElement(this);
m_form = static_cast<HTMLFormElement*>(formElement);
m_form->registerFormElement(this);
}
}
if (!m_form) {
m_form = element->findFormAncestor();
if (m_form)
m_form->registerFormElement(this);
}
}
static inline Node* findRoot(Node* n)
{
Node* root = n;
for (; n; n = n->parentNode())
root = n;
return root;
}
void FormAssociatedElement::removedFromTree()
{
HTMLElement* element = toHTMLElement(this);
if (m_form && findRoot(element) != findRoot(m_form))
removeFromForm();
}
void FormAssociatedElement::removeFromForm()
{
if (!m_form)
return;
m_form->removeFormElement(this);
m_form = 0;
}
void FormAssociatedElement::resetFormOwner(HTMLFormElement* form)
{
HTMLElement* element = toHTMLElement(this);
const AtomicString& formId(element->fastGetAttribute(formAttr));
if (m_form) {
if (formId.isNull())
return;
m_form->removeFormElement(this);
}
m_form = 0;
if (!formId.isNull() && element->inDocument()) {
Element* firstElement = element->treeScope()->getElementById(formId);
if (firstElement && firstElement->hasTagName(formTag))
m_form = static_cast<HTMLFormElement*>(firstElement);
else
m_form = form;
} else
m_form = element->findFormAncestor();
if (m_form)
m_form->registerFormElement(this);
}
void FormAssociatedElement::formAttributeChanged()
{
HTMLElement* element = toHTMLElement(this);
if (!element->fastHasAttribute(formAttr)) {
if (m_form)
m_form->removeFormElement(this);
m_form = element->findFormAncestor();
if (m_form)
form()->registerFormElement(this);
element->document()->unregisterFormElementWithFormAttribute(this);
} else
resetFormOwner(0);
}
const HTMLElement* toHTMLElement(const FormAssociatedElement* associatedElement)
{
if (associatedElement->isFormControlElement())
return static_cast<const HTMLFormControlElement*>(associatedElement);
const HTMLElement* element = static_cast<const HTMLObjectElement*>(associatedElement);
ASSERT(element->hasTagName(objectTag));
return element;
}
HTMLElement* toHTMLElement(FormAssociatedElement* associatedElement)
{
return const_cast<HTMLElement*>(toHTMLElement(static_cast<const FormAssociatedElement*>(associatedElement)));
}
}