1 /* 2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved. 3 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Library General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Library General Public License for more details. 14 * 15 * You should have received a copy of the GNU Library General Public License 16 * along with this library; see the file COPYING.LIB. If not, write to 17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 18 * Boston, MA 02110-1301, USA. 19 */ 20 21 #ifndef TextCheckingHelper_h 22 #define TextCheckingHelper_h 23 24 #include "EditorClient.h" 25 26 namespace WebCore { 27 28 class Range; 29 class Position; 30 31 class TextCheckingParagraph { 32 public: 33 explicit TextCheckingParagraph(PassRefPtr<Range> checkingRange); 34 ~TextCheckingParagraph(); 35 36 int rangeLength() const; 37 PassRefPtr<Range> subrange(int characterOffset, int characterCount) const; 38 int offsetTo(const Position&, ExceptionCode&) const; 39 void expandRangeToNextEnd(); 40 textLength()41 int textLength() const { return text().length(); } 42 String textSubstring(unsigned pos, unsigned len = UINT_MAX) const { return text().substring(pos, len); } textCharacters()43 const UChar* textCharacters() const { return text().characters(); } textCharAt(int index)44 UChar textCharAt(int index) const { return text()[index]; } 45 46 bool isEmpty() const; isTextEmpty()47 bool isTextEmpty() const { return text().isEmpty(); } isRangeEmpty()48 bool isRangeEmpty() const { return checkingStart() >= checkingEnd(); } 49 50 int checkingStart() const; 51 int checkingEnd() const; 52 int checkingLength() const; checkingSubstring()53 String checkingSubstring() const { return textSubstring(checkingStart(), checkingLength()); } 54 checkingRangeMatches(int location,int length)55 bool checkingRangeMatches(int location, int length) const { return location == checkingStart() && length == checkingLength(); } isCheckingRangeCoveredBy(int location,int length)56 bool isCheckingRangeCoveredBy(int location, int length) const { return location <= checkingStart() && location + length >= checkingStart() + checkingLength(); } checkingRangeCovers(int location,int length)57 bool checkingRangeCovers(int location, int length) const { return location < checkingEnd() && location + length > checkingStart(); } 58 PassRefPtr<Range> paragraphRange() const; 59 60 private: 61 void invalidateParagraphRangeValues(); checkingRange()62 PassRefPtr<Range> checkingRange() const { return m_checkingRange; } 63 PassRefPtr<Range> offsetAsRange() const; 64 const String& text() const; 65 66 RefPtr<Range> m_checkingRange; 67 mutable RefPtr<Range> m_paragraphRange; 68 mutable RefPtr<Range> m_offsetAsRange; 69 mutable String m_text; 70 mutable int m_checkingStart; 71 mutable int m_checkingEnd; 72 mutable int m_checkingLength; 73 }; 74 75 class TextCheckingHelper { 76 WTF_MAKE_NONCOPYABLE(TextCheckingHelper); 77 public: 78 TextCheckingHelper(EditorClient*, PassRefPtr<Range>); 79 ~TextCheckingHelper(); 80 81 String findFirstMisspelling(int& firstMisspellingOffset, bool markAll, RefPtr<Range>& firstMisspellingRange); 82 String findFirstMisspellingOrBadGrammar(bool checkGrammar, bool& outIsSpelling, int& outFirstFoundOffset, GrammarDetail& outGrammarDetail); 83 String findFirstBadGrammar(GrammarDetail& outGrammarDetail, int& outGrammarPhraseOffset, bool markAll); 84 int findFirstGrammarDetail(const Vector<GrammarDetail>& grammarDetails, int badGrammarPhraseLocation, int badGrammarPhraseLength, int startOffset, int endOffset, bool markAll); 85 void markAllMisspellings(RefPtr<Range>& firstMisspellingRange); 86 void markAllBadGrammar(); 87 88 bool isUngrammatical(Vector<String>& guessesVector) const; 89 Vector<String> guessesForMisspelledOrUngrammaticalRange(bool checkGrammar, bool& misspelled, bool& ungrammatical) const; 90 private: 91 EditorClient* m_client; 92 RefPtr<Range> m_range; 93 }; 94 95 } // namespace WebCore 96 97 #endif // TextCheckingHelper_h 98