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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 "platform/heap/Handle.h"
#include "platform/text/TextChecking.h"
#include "wtf/text/WTFString.h"
namespace WebCore {
class ExceptionState;
class LocalFrame;
class Range;
class Position;
class SpellCheckerClient;
class TextCheckerClient;
struct TextCheckingResult;
class TextCheckingParagraph {
STACK_ALLOCATED();
public:
explicit TextCheckingParagraph(PassRefPtrWillBeRawPtr<Range> checkingRange);
TextCheckingParagraph(PassRefPtrWillBeRawPtr<Range> checkingRange, PassRefPtrWillBeRawPtr<Range> paragraphRange);
~TextCheckingParagraph();
int rangeLength() const;
PassRefPtrWillBeRawPtr<Range> subrange(int characterOffset, int characterCount) const;
int offsetTo(const Position&, ExceptionState&) const;
void expandRangeToNextEnd();
const String& text() const;
// Why not let clients call these functions on text() themselves?
String textSubstring(unsigned pos, unsigned len = INT_MAX) const { return text().substring(pos, len); }
UChar textCharAt(int index) const { return text()[static_cast<unsigned>(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 checkingRangeCovers(int location, int length) const { return location < checkingEnd() && location + length > checkingStart(); }
PassRefPtrWillBeRawPtr<Range> paragraphRange() const;
PassRefPtrWillBeRawPtr<Range> checkingRange() const { return m_checkingRange; }
private:
void invalidateParagraphRangeValues();
PassRefPtrWillBeRawPtr<Range> offsetAsRange() const;
RefPtrWillBeMember<Range> m_checkingRange;
mutable RefPtrWillBeMember<Range> m_paragraphRange;
mutable RefPtrWillBeMember<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);
STACK_ALLOCATED();
public:
TextCheckingHelper(SpellCheckerClient&, PassRefPtrWillBeRawPtr<Range>);
~TextCheckingHelper();
String findFirstMisspelling(int& firstMisspellingOffset, bool markAll, RefPtrWillBeRawPtr<Range>& firstMisspellingRange);
String findFirstMisspellingOrBadGrammar(bool checkGrammar, bool& outIsSpelling, int& outFirstFoundOffset, GrammarDetail& outGrammarDetail);
String findFirstBadGrammar(GrammarDetail& outGrammarDetail, int& outGrammarPhraseOffset, bool markAll);
void markAllMisspellings(RefPtrWillBeRawPtr<Range>& firstMisspellingRange);
void markAllBadGrammar();
private:
SpellCheckerClient* m_client;
RefPtrWillBeMember<Range> m_range;
int findFirstGrammarDetail(const Vector<GrammarDetail>& grammarDetails, int badGrammarPhraseLocation, int startOffset, int endOffset, bool markAll) const;
bool unifiedTextCheckerEnabled() const;
};
void checkTextOfParagraph(TextCheckerClient&, const String&, TextCheckingTypeMask, Vector<TextCheckingResult>&);
bool unifiedTextCheckerEnabled(const LocalFrame*);
} // namespace WebCore
#endif // TextCheckingHelper_h
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