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/*
* Copyright (C) 2000 Lars Knoll (knoll@kde.org)
*
* 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 LayoutBR_h
#define LayoutBR_h
#include "core/layout/LayoutText.h"
/*
* The whole class here is a hack to get <br> working, as long as we don't have support for
* CSS2 :before and :after pseudo elements
*/
namespace blink {
class LayoutBR final : public LayoutText {
public:
explicit LayoutBR(Node*);
~LayoutBR() override;
const char* name() const override { return "LayoutBR"; }
// Although line breaks contain no actual text, if we're selected we need
// to return a rect that includes space to illustrate a newline.
using LayoutText::localSelectionRect;
float width(unsigned /* from */, unsigned /* len */, const Font&, LayoutUnit /* xpos */, TextDirection, HashSet<const SimpleFontData*>* = nullptr /* fallbackFonts */ , FloatRect* /* glyphBounds */ = nullptr) const override { return 0; }
float width(unsigned /* from */, unsigned /* len */, LayoutUnit /* xpos */, TextDirection, bool = false /* firstLine */, HashSet<const SimpleFontData*>* = nullptr /* fallbackFonts */, FloatRect* /* glyphBounds */ = nullptr) const override { return 0; }
int lineHeight(bool firstLine) const;
bool isOfType(LayoutObjectType type) const override { return type == LayoutObjectBr || LayoutText::isOfType(type); }
int caretMinOffset() const override;
int caretMaxOffset() const override;
PositionWithAffinity positionForPoint(const LayoutPoint&) final;
protected:
void styleDidChange(StyleDifference, const ComputedStyle* oldStyle) override;
};
DEFINE_LAYOUT_OBJECT_TYPE_CASTS(LayoutBR, isBR());
} // namespace blink
#endif // LayoutBR_h
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