44 lines
1.7 KiB
C++
44 lines
1.7 KiB
C++
/*
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* This file is part of the WebKit project.
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*
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* Copyright (C) 2013 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#pragma once
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#include "FormAssociatedElement.h"
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namespace WebCore {
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// ValidityState is not a separate object, but rather an interface of FormAssociatedElement that
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// is published as part of the DOM. We could implement this as a base class of FormAssociatedElement,
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// but that would have a small runtime cost, and no significant benefit. We'd prefer to implement this
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// as a typedef of FormAssociatedElement, but that would require changes to bindings generation.
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class ValidityState : public FormAssociatedElement {
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};
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inline ValidityState* FormAssociatedElement::validity()
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{
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// Because ValidityState adds nothing to FormAssociatedElement, we rely on it being safe
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// to cast a FormAssociatedElement like this, even though it's not actually a ValidityState.
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return static_cast<ValidityState*>(this);
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}
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} // namespace WebCore
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