1/*
2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011, 2016 Apple Inc. All right reserved.
4 * Copyright (C) 2010 Google Inc. All rights reserved.
5 * Copyright (C) 2013 ChangSeok Oh <shivamidow@gmail.com>
6 * Copyright (C) 2013 Adobe Systems Inc. All right reserved.
7 *
8 * This library is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Library General Public
10 * License as published by the Free Software Foundation; either
11 * version 2 of the License, or (at your option) any later version.
12 *
13 * This library is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Library General Public License for more details.
17 *
18 * You should have received a copy of the GNU Library General Public License
19 * along with this library; see the file COPYING.LIB. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 *
23 */
24
25#pragma once
26
27#include <wtf/Vector.h>
28
29namespace WebCore {
30
31class InlineIterator;
32class RenderBoxModelObject;
33class RenderText;
34
35struct BidiRun;
36struct BidiIsolatedRun;
37
38template <class Iterator, class Run> class BidiResolver;
39template <class Iterator, class Run, class IsolateRun> class BidiResolverWithIsolate;
40template <class Iterator> class WhitespaceCollapsingState;
41typedef BidiResolverWithIsolate<InlineIterator, BidiRun, BidiIsolatedRun> InlineBidiResolver;
42typedef WhitespaceCollapsingState<InlineIterator> LineWhitespaceCollapsingState;
43
44class TrailingObjects {
45public:
46 TrailingObjects()
47 : m_whitespace(0)
48 { }
49
50 void setTrailingWhitespace(RenderText* whitespace)
51 {
52 ASSERT(whitespace);
53 m_whitespace = whitespace;
54 }
55
56 void clear()
57 {
58 m_whitespace = 0;
59 m_boxes.shrink(0); // Use shrink(0) instead of clear() to retain our capacity.
60 }
61
62 void appendBoxIfNeeded(RenderBoxModelObject& box)
63 {
64 if (m_whitespace)
65 m_boxes.append(box);
66 }
67
68 enum CollapseFirstSpaceOrNot { DoNotCollapseFirstSpace, CollapseFirstSpace };
69
70 void updateWhitespaceCollapsingTransitionsForTrailingBoxes(LineWhitespaceCollapsingState&, const InlineIterator& lBreak, CollapseFirstSpaceOrNot);
71
72private:
73 RenderText* m_whitespace;
74 Vector<std::reference_wrapper<RenderBoxModelObject>, 4> m_boxes;
75};
76
77} // namespace WebCore
78