third_party/WebKit/Source/core/html/HTMLFormControlsCollection.h

/*
 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 * Copyright (C) 2014 Samsung Electronics. 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.
 *
 */

#ifndef HTMLFormControlsCollection_h
#define HTMLFormControlsCollection_h

#include "core/html/FormAssociatedElement.h"
#include "core/html/HTMLCollection.h"
#include "core/html/HTMLElement.h"
#include "core/html/RadioNodeList.h"

namespace blink {

class HTMLImageElement;
class RadioNodeListOrElement;

// This class is just a big hack to find form elements even in malformed HTML elements.
// The famous <table><tr><form><td> problem.

class HTMLFormControlsCollection final : public HTMLCollection {
    DEFINE_WRAPPERTYPEINFO();
public:
    static HTMLFormControlsCollection* create(ContainerNode&, CollectionType);

    ~HTMLFormControlsCollection() override;

    HTMLElement* item(unsigned offset) const { return toHTMLElement(HTMLCollection::item(offset)); }

    HTMLElement* namedItem(const AtomicString& name) const override;
    void namedGetter(const AtomicString& name, RadioNodeListOrElement&);

    DECLARE_VIRTUAL_TRACE();

private:
    explicit HTMLFormControlsCollection(ContainerNode&);

    void updateIdNameCache() const override;
    void supportedPropertyNames(Vector<String>& names) override;

    const FormAssociatedElement::List& formControlElements() const;
    const HeapVector<Member<HTMLImageElement>>& formImageElements() const;
    HTMLElement* virtualItemAfter(Element*) const override;
    void invalidateCache(Document* oldDocument = 0) const override;

    mutable Member<HTMLElement> m_cachedElement;
    mutable unsigned m_cachedElementOffsetInArray;
};
DEFINE_TYPE_CASTS(HTMLFormControlsCollection, LiveNodeListBase, collection, collection->type() == FormControls, collection.type() == FormControls);

} // namespace blink

#endif // HTMLFormControlsCollection_h