Source/WebCore/rendering/RenderDeprecatedFlexibleBox.h

/*
 * This file is part of the render object implementation for KHTML.
 *
 * Copyright (C) 2003 Apple Inc.
 *
 * 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 "RenderBlock.h"

namespace WebCore {

class FlexBoxIterator;

class RenderDeprecatedFlexibleBox final : public RenderBlock {
    WTF_MAKE_ISO_ALLOCATED(RenderDeprecatedFlexibleBox);
public:
    RenderDeprecatedFlexibleBox(Element&, RenderStyle&&);
    virtual ~RenderDeprecatedFlexibleBox();

    Element& element() const { return downcast<Element>(nodeForNonAnonymous()); }

    const char* renderName() const override;

    void styleWillChange(StyleDifference, const RenderStyle& newStyle) override;

    void layoutBlock(bool relayoutChildren, LayoutUnit pageHeight = 0_lu) override;
    void layoutHorizontalBox(bool relayoutChildren);
    void layoutVerticalBox(bool relayoutChildren);

    bool isStretchingChildren() const { return m_stretchingChildren; }

    bool avoidsFloats() const override { return true; }
    bool canDropAnonymousBlockChild() const override { return false; }

    void placeChild(RenderBox* child, const LayoutPoint& location, LayoutSize* childLayoutDelta = nullptr);

private:
    bool isDeprecatedFlexibleBox() const override { return true; }
    void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const override;
    void computePreferredLogicalWidths() override;

    LayoutUnit allowedChildFlex(RenderBox* child, bool expanding, unsigned group);

    bool hasMultipleLines() const { return style().boxLines() == BoxLines::Multiple; }
    bool isVertical() const { return style().boxOrient() == BoxOrient::Vertical; }
    bool isHorizontal() const { return style().boxOrient() == BoxOrient::Horizontal; }

    void applyLineClamp(FlexBoxIterator&, bool relayoutChildren);
    void clearLineClamp();

    bool m_stretchingChildren;
};

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderDeprecatedFlexibleBox, isDeprecatedFlexibleBox())