1 /* 2 * (C) 1999 Lars Knoll (knoll (at) kde.org) 3 * (C) 2000 Dirk Mueller (mueller (at) kde.org) 4 * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved. 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Library General Public 8 * License as published by the Free Software Foundation; either 9 * version 2 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Library General Public License for more details. 15 * 16 * You should have received a copy of the GNU Library General Public License 17 * along with this library; see the file COPYING.LIB. If not, write to 18 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 19 * Boston, MA 02110-1301, USA. 20 * 21 */ 22 23 #include "config.h" 24 #include "RenderTextFragment.h" 25 26 #include "Text.h" 27 28 namespace WebCore { 29 30 RenderTextFragment::RenderTextFragment(Node* node, StringImpl* str, int startOffset, int length) 31 : RenderText(node, str ? str->substring(startOffset, length) : 0) 32 , m_start(startOffset) 33 , m_end(length) 34 , m_firstLetter(0) 35 { 36 } 37 38 RenderTextFragment::RenderTextFragment(Node* node, StringImpl* str) 39 : RenderText(node, str) 40 , m_start(0) 41 , m_end(str ? str->length() : 0) 42 , m_contentString(str) 43 , m_firstLetter(0) 44 { 45 } 46 47 PassRefPtr<StringImpl> RenderTextFragment::originalText() const 48 { 49 Node* e = node(); 50 RefPtr<StringImpl> result = (e ? static_cast<Text*>(e)->dataImpl() : contentString()); 51 if (result && (start() > 0 || start() < result->length())) 52 result = result->substring(start(), end()); 53 return result.release(); 54 } 55 56 void RenderTextFragment::destroy() 57 { 58 if (m_firstLetter) 59 m_firstLetter->destroy(); 60 RenderText::destroy(); 61 } 62 63 void RenderTextFragment::setTextInternal(PassRefPtr<StringImpl> text) 64 { 65 RenderText::setTextInternal(text); 66 if (m_firstLetter) { 67 ASSERT(!m_contentString); 68 m_firstLetter->destroy(); 69 m_firstLetter = 0; 70 m_start = 0; 71 m_end = textLength(); 72 } 73 } 74 75 UChar RenderTextFragment::previousCharacter() 76 { 77 if (start()) { 78 Node* e = node(); 79 StringImpl* original = (e ? static_cast<Text*>(e)->dataImpl() : contentString()); 80 if (original) 81 return (*original)[start() - 1]; 82 } 83 84 return RenderText::previousCharacter(); 85 } 86 87 } // namespace WebCore 88
