| /* |
| * Copyright (C) 1999 Lars Knoll (knoll@kde.org) |
| * (C) 1999 Antti Koivisto (koivisto@kde.org) |
| * (C) 2001 Dirk Mueller (mueller@kde.org) |
| * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. |
| * (C) 2006 Alexey Proskuryakov (ap@nypop.com) |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Library General Public |
| * License as published by the Free Software Foundation; either |
| * version 2 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Library General Public License for more details. |
| * |
| * You should have received a copy of the GNU Library General Public License |
| * along with this library; see the file COPYING.LIB. If not, write to |
| * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| * Boston, MA 02110-1301, USA. |
| * |
| */ |
| |
| #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->document()->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) { |
| // This handles the case of a new form element being created by |
| // JavaScript and inserted inside a form. In the case of the parser |
| // setting a form, we will already have a non-null value for m_form, |
| // and so we don't need to do anything. |
| 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 the form and element are both in the same tree, preserve the connection to the form. |
| // Otherwise, null out our form and remove ourselves from the form's list of elements. |
| 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()) { |
| // The HTML5 spec says that the element should be associated with |
| // the first element in the document to have an ID that equal to |
| // the value of form attribute, so we put the result of |
| // document()->getElementById() over the given element. |
| Element* firstElement = element->document()->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)) { |
| // The form attribute removed. We need to reset form owner here. |
| 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); |
| // Assumes the element is an HTMLObjectElement |
| 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))); |
| } |
| |
| } // namespace Webcore |