1/* 2 * Copyright (C) 2000 Lars Knoll (knoll@kde.org) 3 * Copyright (C) 2003, 2004, 2006, 2007, 2008, 2009, 2010, 2011 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#ifndef TrailingObjects_h 26#define TrailingObjects_h 27 28#include <wtf/Vector.h> 29 30namespace WebCore { 31 32class InlineIterator; 33class RenderBoxModelObject; 34class RenderText; 35 36struct BidiRun; 37 38template <class Iterator, class Run> class BidiResolver; 39template <class Iterator> class MidpointState; 40typedef BidiResolver<InlineIterator, BidiRun> InlineBidiResolver; 41typedef MidpointState<InlineIterator> LineMidpointState; 42 43class TrailingObjects { 44public: 45 TrailingObjects() 46 : m_whitespace(0) 47 { } 48 49 void setTrailingWhitespace(RenderText* whitespace) 50 { 51 ASSERT(whitespace); 52 m_whitespace = whitespace; 53 } 54 55 void clear() 56 { 57 m_whitespace = 0; 58 m_boxes.shrink(0); // Use shrink(0) instead of clear() to retain our capacity. 59 } 60 61 void appendBoxIfNeeded(RenderBoxModelObject* box) 62 { 63 if (m_whitespace) 64 m_boxes.append(box); 65 } 66 67 enum CollapseFirstSpaceOrNot { DoNotCollapseFirstSpace, CollapseFirstSpace }; 68 69 void updateMidpointsForTrailingBoxes(LineMidpointState&, const InlineIterator& lBreak, CollapseFirstSpaceOrNot); 70 71private: 72 RenderText* m_whitespace; 73 Vector<RenderBoxModelObject*, 4> m_boxes; 74}; 75 76} 77 78#endif // TrailingObjects_h 79