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 "core/page/EditorClient.h" 25 #include "core/platform/text/TextChecking.h" 26 #include "wtf/text/WTFString.h" 27 28 namespace WebCore { 29 30 class ExceptionState; 31 class Range; 32 class Position; 33 struct TextCheckingResult; 34 35 class TextCheckingParagraph { 36 public: 37 explicit TextCheckingParagraph(PassRefPtr<Range> checkingRange); 38 TextCheckingParagraph(PassRefPtr<Range> checkingRange, PassRefPtr<Range> paragraphRange); 39 ~TextCheckingParagraph(); 40 41 int rangeLength() const; 42 PassRefPtr<Range> subrange(int characterOffset, int characterCount) const; 43 int offsetTo(const Position&, ExceptionState&) const; 44 void expandRangeToNextEnd(); 45 46 const String& text() const; 47 // Why not let clients call these functions on text() themselves? 48 String textSubstring(unsigned pos, unsigned len = INT_MAX) const { return text().substring(pos, len); } 49 UChar textCharAt(int index) const { return text()[static_cast<unsigned>(index)]; } 50 51 bool isEmpty() const; 52 bool isTextEmpty() const { return text().isEmpty(); } 53 bool isRangeEmpty() const { return checkingStart() >= checkingEnd(); } 54 55 int checkingStart() const; 56 int checkingEnd() const; 57 int checkingLength() const; 58 String checkingSubstring() const { return textSubstring(checkingStart(), checkingLength()); } 59 60 bool checkingRangeCovers(int location, int length) const { return location < checkingEnd() && location + length > checkingStart(); } 61 PassRefPtr<Range> paragraphRange() const; 62 63 private: 64 void invalidateParagraphRangeValues(); 65 PassRefPtr<Range> checkingRange() const { return m_checkingRange; } 66 PassRefPtr<Range> offsetAsRange() const; 67 68 RefPtr<Range> m_checkingRange; 69 mutable RefPtr<Range> m_paragraphRange; 70 mutable RefPtr<Range> m_offsetAsRange; 71 mutable String m_text; 72 mutable int m_checkingStart; 73 mutable int m_checkingEnd; 74 mutable int m_checkingLength; 75 }; 76 77 class TextCheckingHelper { 78 WTF_MAKE_NONCOPYABLE(TextCheckingHelper); 79 public: 80 TextCheckingHelper(EditorClient*, PassRefPtr<Range>); 81 ~TextCheckingHelper(); 82 83 String findFirstMisspelling(int& firstMisspellingOffset, bool markAll, RefPtr<Range>& firstMisspellingRange); 84 String findFirstMisspellingOrBadGrammar(bool checkGrammar, bool& outIsSpelling, int& outFirstFoundOffset, GrammarDetail& outGrammarDetail); 85 String findFirstBadGrammar(GrammarDetail& outGrammarDetail, int& outGrammarPhraseOffset, bool markAll); 86 void markAllMisspellings(RefPtr<Range>& firstMisspellingRange); 87 void markAllBadGrammar(); 88 89 private: 90 EditorClient* m_client; 91 RefPtr<Range> m_range; 92 93 int findFirstGrammarDetail(const Vector<GrammarDetail>& grammarDetails, int badGrammarPhraseLocation, int startOffset, int endOffset, bool markAll) const; 94 bool unifiedTextCheckerEnabled() const; 95 }; 96 97 void checkTextOfParagraph(TextCheckerClient*, const String&, TextCheckingTypeMask, Vector<TextCheckingResult>&); 98 99 bool unifiedTextCheckerEnabled(const Frame*); 100 101 } // namespace WebCore 102 103 #endif // TextCheckingHelper_h 104