1 /*
2 * (C) 1999 Lars Knoll (knoll@kde.org)
3 * (C) 2000 Dirk Mueller (mueller@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
RenderTextFragment(Node * node,StringImpl * str,int startOffset,int length)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
RenderTextFragment(Node * node,StringImpl * str)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
originalText() const47 PassRefPtr<StringImpl> RenderTextFragment::originalText() const
48 {
49 Node* e = node();
50 RefPtr<StringImpl> result = (e ? static_cast<Text*>(e)->string() : contentString());
51 if (result && (start() > 0 || start() < result->length()))
52 result = result->substring(start(), end());
53 return result.release();
54 }
55
destroy()56 void RenderTextFragment::destroy()
57 {
58 if (m_firstLetter)
59 m_firstLetter->destroy();
60 RenderText::destroy();
61 }
62
setTextInternal(PassRefPtr<StringImpl> text)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
previousCharacter()75 UChar RenderTextFragment::previousCharacter()
76 {
77 if (start()) {
78 Node* e = node();
79 StringImpl* original = (e ? static_cast<Text*>(e)->string() : contentString());
80 if (original)
81 return (*original)[start() - 1];
82 }
83
84 return RenderText::previousCharacter();
85 }
86
87 } // namespace WebCore
88