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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* (C) 2008 David Smith (catfish.man@gmail.com)
* Copyright (C) 2004, 2005, 2006, 2007, 2008 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.
*
*/
#ifndef NodeComputedStyle_h
#define NodeComputedStyle_h
#include "core/dom/LayoutTreeBuilderTraversal.h"
#include "core/dom/Node.h"
#include "core/dom/shadow/InsertionPoint.h"
#include "core/html/HTMLOptGroupElement.h"
#include "core/layout/LayoutObject.h"
namespace blink {
inline const ComputedStyle* Node::computedStyle() const {
return mutableComputedStyle();
}
inline ComputedStyle* Node::mutableComputedStyle() const {
if (LayoutObject* layoutObject = this->layoutObject())
return layoutObject->mutableStyle();
// <option> and <optgroup> can be styled even if they don't get layout
// objects, so they store their style internally and return it through
// nonLayoutObjectComputedStyle(). We check here explicitly to avoid the
// virtual call in the common case.
if (isHTMLOptGroupElement(*this) || isHTMLOptionElement(this))
return nonLayoutObjectComputedStyle();
return 0;
}
inline const ComputedStyle* Node::parentComputedStyle() const {
if (isActiveSlotOrActiveInsertionPoint())
return 0;
ContainerNode* parent = LayoutTreeBuilderTraversal::parent(*this);
return parent ? parent->computedStyle() : 0;
}
inline const ComputedStyle& Node::computedStyleRef() const {
const ComputedStyle* style = computedStyle();
DCHECK(style);
return *style;
}
} // namespace blink
#endif // NodeComputedStyle_h
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