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.
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.
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.
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.
23 #ifndef RenderTextFragment_h
24 #define RenderTextFragment_h
26 #include "core/rendering/RenderText.h"
30 // Used to represent a text substring of an element, e.g., for text runs that are split because of
31 // first letter and that must therefore have different styles (and positions in the render tree).
32 // We cache offsets so that text transformations can be applied in such a way that we can recover
33 // the original unaltered string from our corresponding DOM node.
34 class RenderTextFragment FINAL : public RenderText {
36 RenderTextFragment(Node*, StringImpl*, int startOffset, int length);
37 RenderTextFragment(Node*, StringImpl*);
38 virtual ~RenderTextFragment();
39 virtual void trace(Visitor*) OVERRIDE;
41 virtual bool isTextFragment() const OVERRIDE { return true; }
43 virtual bool canBeSelectionLeaf() const OVERRIDE { return node() && node()->hasEditableStyle(); }
45 unsigned start() const { return m_start; }
46 unsigned end() const { return m_end; }
47 virtual unsigned textStartOffset() const OVERRIDE { return start(); }
49 RenderBoxModelObject* firstLetter() const { return m_firstLetter; }
50 void setFirstLetter(RenderBoxModelObject* firstLetter) { m_firstLetter = firstLetter; }
51 RenderText* firstRenderTextInFirstLetter() const;
53 StringImpl* contentString() const { return m_contentString.get(); }
54 virtual PassRefPtr<StringImpl> originalText() const OVERRIDE;
56 virtual void setText(PassRefPtr<StringImpl>, bool force = false) OVERRIDE;
58 virtual void transformText() OVERRIDE;
61 virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle) OVERRIDE;
64 virtual void willBeDestroyed() OVERRIDE;
66 virtual UChar previousCharacter() const OVERRIDE;
67 RenderBlock* blockForAccompanyingFirstLetter() const;
68 virtual void updateHitTestResult(HitTestResult&, const LayoutPoint&) OVERRIDE;
72 RefPtr<StringImpl> m_contentString;
73 RawPtrWillBeMember<RenderBoxModelObject> m_firstLetter;
76 DEFINE_TYPE_CASTS(RenderTextFragment, RenderObject, object, toRenderText(object)->isTextFragment(), toRenderText(object).isTextFragment());
80 #endif // RenderTextFragment_h