| /* |
| * 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" |
| #include "core/style/ComputedStyle.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 (isSlotOrActiveInsertionPoint()) |
| 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 |