RenderTableCol.h   [plain text]

/*
 * Copyright (C) 1997 Martin Jones (mjones@kde.org)
 *           (C) 1997 Torben Weis (weis@kde.org)
 *           (C) 1998 Waldo Bastian (bastian@kde.org)
 *           (C) 1999 Lars Knoll (knoll@kde.org)
 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
 * Copyright (C) 2003, 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
 *
 * 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 "RenderBox.h"

namespace WebCore {

class RenderTable;
class RenderTableCell;

class RenderTableCol final : public RenderBox {
    WTF_MAKE_ISO_ALLOCATED(RenderTableCol);
public:
    RenderTableCol(Element&, RenderStyle&&);
    Element& element() const { return downcast<Element>(nodeForNonAnonymous()); }

    void clearPreferredLogicalWidthsDirtyBits();

    unsigned span() const { return m_span; }
    void setSpan(unsigned span) { m_span = span; }

    bool isTableColumnGroupWithColumnChildren() const { return firstChild(); }
    bool isTableColumn() const { return style().display() == DisplayType::TableColumn; }
    bool isTableColumnGroup() const { return style().display() == DisplayType::TableColumnGroup; }

    RenderTableCol* enclosingColumnGroup() const;
    RenderTableCol* enclosingColumnGroupIfAdjacentBefore() const;
    RenderTableCol* enclosingColumnGroupIfAdjacentAfter() const;

    // Returns the next column or column-group.
    RenderTableCol* nextColumn() const;

    const BorderValue& borderAdjoiningCellStartBorder() const;
    const BorderValue& borderAdjoiningCellEndBorder() const;
    const BorderValue& borderAdjoiningCellBefore(const RenderTableCell&) const;
    const BorderValue& borderAdjoiningCellAfter(const RenderTableCell&) const;

    LayoutUnit offsetLeft() const override;
    LayoutUnit offsetTop() const override;
    LayoutUnit offsetWidth() const override;
    LayoutUnit offsetHeight() const override;
    void updateFromElement() override;

private:
    const char* renderName() const override { return "RenderTableCol"; }
    bool isRenderTableCol() const override { return true; }
    void computePreferredLogicalWidths() override { ASSERT_NOT_REACHED(); }

    void insertedIntoTree() override;
    void willBeRemovedFromTree() override;

    bool isChildAllowed(const RenderObject&, const RenderStyle&) const override;
    bool canHaveChildren() const override;
    bool requiresLayer() const override { return false; }

    LayoutRect clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const override;
    void imageChanged(WrappedImagePtr, const IntRect* = 0) override;

    void styleDidChange(StyleDifference, const RenderStyle* oldStyle) override;
    void paint(PaintInfo&, const LayoutPoint&) override { }

    RenderTable* table() const;

    unsigned m_span { 1 };
};

inline RenderTableCol* RenderTableCol::enclosingColumnGroupIfAdjacentBefore() const
{
    if (previousSibling())
        return nullptr;
    return enclosingColumnGroup();
}

inline RenderTableCol* RenderTableCol::enclosingColumnGroupIfAdjacentAfter() const
{
    if (nextSibling())
        return nullptr;
    return enclosingColumnGroup();
}

} // namespace WebCore

SPECIALIZE_TYPE_TRAITS_RENDER_OBJECT(RenderTableCol, isRenderTableCol())