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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
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* 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 TextCheckingHelper_h
#define TextCheckingHelper_h
#include "EditorClient.h"
namespace WebCore {
class Range;
class Position;
class TextCheckingParagraph {
public:
explicit TextCheckingParagraph(PassRefPtr<Range> checkingRange);
~TextCheckingParagraph();
int rangeLength() const;
PassRefPtr<Range> subrange(int characterOffset, int characterCount) const;
int offsetTo(const Position&, ExceptionCode&) const;
void expandRangeToNextEnd();
int textLength() const { return text().length(); }
String textSubstring(unsigned pos, unsigned len = UINT_MAX) const { return text().substring(pos, len); }
const UChar* textCharacters() const { return text().characters(); }
UChar textCharAt(int index) const { return text()[index]; }
bool isEmpty() const;
bool isTextEmpty() const { return text().isEmpty(); }
bool isRangeEmpty() const { return checkingStart() >= checkingEnd(); }
int checkingStart() const;
int checkingEnd() const;
int checkingLength() const;
String checkingSubstring() const { return textSubstring(checkingStart(), checkingLength()); }
bool checkingRangeMatches(int location, int length) const { return location == checkingStart() && length == checkingLength(); }
bool isCheckingRangeCoveredBy(int location, int length) const { return location <= checkingStart() && location + length >= checkingStart() + checkingLength(); }
bool checkingRangeCovers(int location, int length) const { return location < checkingEnd() && location + length > checkingStart(); }
PassRefPtr<Range> paragraphRange() const;
private:
void invalidateParagraphRangeValues();
PassRefPtr<Range> checkingRange() const { return m_checkingRange; }
PassRefPtr<Range> offsetAsRange() const;
const String& text() const;
RefPtr<Range> m_checkingRange;
mutable RefPtr<Range> m_paragraphRange;
mutable RefPtr<Range> m_offsetAsRange;
mutable String m_text;
mutable int m_checkingStart;
mutable int m_checkingEnd;
mutable int m_checkingLength;
};
class TextCheckingHelper {
WTF_MAKE_NONCOPYABLE(TextCheckingHelper);
public:
TextCheckingHelper(EditorClient*, PassRefPtr<Range>);
~TextCheckingHelper();
String findFirstMisspelling(int& firstMisspellingOffset, bool markAll, RefPtr<Range>& firstMisspellingRange);
String findFirstMisspellingOrBadGrammar(bool checkGrammar, bool& outIsSpelling, int& outFirstFoundOffset, GrammarDetail& outGrammarDetail);
String findFirstBadGrammar(GrammarDetail& outGrammarDetail, int& outGrammarPhraseOffset, bool markAll);
int findFirstGrammarDetail(const Vector<GrammarDetail>& grammarDetails, int badGrammarPhraseLocation, int badGrammarPhraseLength, int startOffset, int endOffset, bool markAll);
void markAllMisspellings(RefPtr<Range>& firstMisspellingRange);
void markAllBadGrammar();
bool isUngrammatical(Vector<String>& guessesVector) const;
Vector<String> guessesForMisspelledOrUngrammaticalRange(bool checkGrammar, bool& misspelled, bool& ungrammatical) const;
private:
EditorClient* m_client;
RefPtr<Range> m_range;
};
} // namespace WebCore
#endif // TextCheckingHelper_h