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* Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
#ifndef TextCheckingParagraph_h
#define TextCheckingParagraph_h
#include "core/editing/EphemeralRange.h"
#include "platform/wtf/text/WTFString.h"
namespace blink {
class Range;
class TextCheckingParagraph {
explicit TextCheckingParagraph(const EphemeralRange& checking_range);
TextCheckingParagraph(const EphemeralRange& checking_range,
const EphemeralRange& paragraph_range);
TextCheckingParagraph(Range* checking_range, Range* paragraph_range);
int RangeLength() const;
EphemeralRange Subrange(int character_offset, int character_count) const;
void ExpandRangeToNextEnd();
const String& GetText() const;
// Why not let clients call these functions on text() themselves?
String TextSubstring(unsigned pos, unsigned len = INT_MAX) const {
return GetText().Substring(pos, len);
UChar TextCharAt(int index) const {
return GetText()[static_cast<unsigned>(index)];
bool IsEmpty() const;
int CheckingStart() const;
int CheckingEnd() const;
int CheckingLength() const;
bool CheckingRangeCovers(int location, int length) const {
return location < CheckingEnd() && location + length > CheckingStart();
EphemeralRange ParagraphRange() const;
void SetParagraphRange(const EphemeralRange&);
EphemeralRange CheckingRange() const { return checking_range_; }
void InvalidateParagraphRangeValues();
EphemeralRange OffsetAsRange() const;
bool IsTextEmpty() const { return GetText().IsEmpty(); }
bool IsRangeEmpty() const { return CheckingStart() >= CheckingEnd(); }
EphemeralRange checking_range_;
mutable EphemeralRange paragraph_range_;
mutable EphemeralRange offset_as_range_;
mutable String text_;
mutable int checking_start_;
mutable int checking_end_;
mutable int checking_length_;
} // namespace blink
#endif // TextCheckingParagraph_h