1/*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12 * Library General Public License for more details.
13 *
14 * You should have received a copy of the GNU Library General Public License
15 * along with this library; see the file COPYING.LIB.  If not, write to
16 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 * Boston, MA 02110-1301, USA.
18 *
19 */
20
21#ifndef RenderBR_h
22#define RenderBR_h
23
24#include "core/rendering/RenderText.h"
25
26/*
27 * The whole class here is a hack to get <br> working, as long as we don't have support for
28 * CSS2 :before and :after pseudo elements
29 */
30namespace blink {
31
32class RenderBR FINAL : public RenderText {
33public:
34    explicit RenderBR(Node*);
35    virtual ~RenderBR();
36
37    virtual const char* renderName() const OVERRIDE { return "RenderBR"; }
38
39    virtual LayoutRect selectionRectForPaintInvalidation(const RenderLayerModelObject* /*paintInvalidationContainer*/) const OVERRIDE { return LayoutRect(); }
40
41    virtual float width(unsigned /*from*/, unsigned /*len*/, const Font&, float /*xPos*/, TextDirection, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/ , GlyphOverflow* = 0) const OVERRIDE { return 0; }
42    virtual float width(unsigned /*from*/, unsigned /*len*/, float /*xpos*/, TextDirection, bool = false /*firstLine*/, HashSet<const SimpleFontData*>* = 0 /*fallbackFonts*/, GlyphOverflow* = 0) const OVERRIDE { return 0; }
43
44    int lineHeight(bool firstLine) const;
45
46    // overrides
47    virtual bool isBR() const OVERRIDE { return true; }
48
49    virtual int caretMinOffset() const OVERRIDE;
50    virtual int caretMaxOffset() const OVERRIDE;
51
52    virtual PositionWithAffinity positionForPoint(const LayoutPoint&) OVERRIDE FINAL;
53
54protected:
55    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
56};
57
58DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderBR, isBR());
59
60} // namespace blink
61
62#endif // RenderBR_h
63