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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2000 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights reserved.
*
* 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.
*
*/
#pragma once
#include "FormNamedItem.h"
#include "Node.h"
#include <wtf/WeakPtr.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
class ContainerNode;
class DOMFormData;
class Document;
class FormAttributeTargetObserver;
class HTMLElement;
class HTMLFormElement;
class ValidityState;
class FormAssociatedElement : public FormNamedItem {
WTF_MAKE_NONCOPYABLE(FormAssociatedElement);
WTF_MAKE_FAST_ALLOCATED;
public:
virtual ~FormAssociatedElement();
void ref() { refFormAssociatedElement(); }
void deref() { derefFormAssociatedElement(); }
static HTMLFormElement* findAssociatedForm(const HTMLElement*, HTMLFormElement*);
WEBCORE_EXPORT HTMLFormElement* form() const;
ValidityState* validity();
virtual bool isFormControlElement() const = 0;
virtual bool isFormControlElementWithState() const;
virtual bool isEnumeratable() const = 0;
// Returns the 'name' attribute value. If this element has no name
// attribute, it returns an empty string instead of null string.
// Note that the 'name' IDL attribute doesn't use this function.
virtual const AtomString& name() const;
// Override in derived classes to get the encoded name=value pair for submitting.
// Return true for a successful control (see HTML4-17.13.2).
virtual bool appendFormData(DOMFormData&) { return false; }
void formWillBeDestroyed();
void resetFormOwner();
void formOwnerRemovedFromTree(const Node&);
// ValidityState attribute implementations
bool badInput() const { return hasBadInput(); }
bool customError() const;
// Implementations of patternMismatch, rangeOverflow, rangerUnderflow, stepMismatch, tooShort, tooLong and valueMissing must call willValidate.
virtual bool hasBadInput() const;
virtual bool patternMismatch() const;
virtual bool rangeOverflow() const;
virtual bool rangeUnderflow() const;
virtual bool stepMismatch() const;
virtual bool tooShort() const;
virtual bool tooLong() const;
virtual bool typeMismatch() const;
virtual bool valueMissing() const;
virtual String validationMessage() const;
virtual bool computeValidity() const;
virtual void setCustomValidity(const String&);
void formAttributeTargetChanged();
protected:
FormAssociatedElement(HTMLFormElement*);
void insertedIntoAncestor(Node::InsertionType, ContainerNode&);
void removedFromAncestor(Node::RemovalType, ContainerNode&);
void didMoveToNewDocument(Document& oldDocument);
void clearForm() { setForm(nullptr); }
void setForm(HTMLFormElement*);
void formAttributeChanged();
// If you add an override of willChangeForm() or didChangeForm() to a class
// derived from this one, you will need to add a call to setForm(0) to the
// destructor of that class.
virtual void willChangeForm();
virtual void didChangeForm();
String customValidationMessage() const;
private:
// "willValidate" means "is a candidate for constraint validation".
virtual bool willValidate() const = 0;
virtual void refFormAssociatedElement() = 0;
virtual void derefFormAssociatedElement() = 0;
void resetFormAttributeTargetObserver();
bool isFormAssociatedElement() const final { return true; }
std::unique_ptr<FormAttributeTargetObserver> m_formAttributeTargetObserver;
WeakPtr<HTMLFormElement> m_form;
WeakPtr<HTMLFormElement> m_formSetByParser;
String m_customValidationMessage;
};
} // namespace
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