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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 THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BR_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BR_H_
#include "third_party/blink/renderer/core/layout/layout_text.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 HTMLBRElement;
class LayoutBR : public LayoutText {
public:
explicit LayoutBR(HTMLBRElement& node);
~LayoutBR() override;
const char* GetName() const override {
NOT_DESTROYED();
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::LocalSelectionVisualRect;
bool IsBR() const final {
NOT_DESTROYED();
return true;
}
int CaretMinOffset() const override;
int CaretMaxOffset() const override;
PositionWithAffinity PositionForPoint(const PhysicalOffset&) const final;
Position PositionForCaretOffset(unsigned) const final;
std::optional<unsigned> CaretOffsetForPosition(const Position&) const final;
private:
unsigned NonCollapsedCaretMaxOffset() const override;
};
template <>
struct DowncastTraits<LayoutBR> {
static bool AllowFrom(const LayoutObject& object) { return object.IsBR(); }
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_LAYOUT_LAYOUT_BR_H_
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