third_party/WebKit/Source/core/editing/spellcheck/TextCheckingHelper.h - Issue 2251753002: Merge TextCheckingHelper into SpellChecker Part 5

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Issue 2251753002: Merge TextCheckingHelper into SpellChecker Part 5 (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@CleanupIncludesInTCH

Patch Set: Created 4 years, 4 months ago

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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/editing/EphemeralRange.h"

25 #include "core/editing/Position.h"

26 #include "wtf/text/WTFString.h"

27

28 namespace blink {

29

30 class Range;

31

32 class TextCheckingParagraph {

33 STACK_ALLOCATED();

34 public:

35 explicit TextCheckingParagraph(const EphemeralRange& checkingRange);

36 TextCheckingParagraph(const EphemeralRange& checkingRange, const EphemeralRa nge& paragraphRange);

37 TextCheckingParagraph(Range* checkingRange, Range* paragraphRange);

38 ~TextCheckingParagraph();

39

40 int rangeLength() const;

41 EphemeralRange subrange(int characterOffset, int characterCount) const;

42 int offsetTo(const Position&) const;

43 void expandRangeToNextEnd();

44

45 const String& text() const;

46 // Why not let clients call these functions on text() themselves?

47 String textSubstring(unsigned pos, unsigned len = INT_MAX) const { return te xt().substring(pos, len); }

48 UChar textCharAt(int index) const { return text()[static_cast<unsigned>(inde x)]; }

49

50 bool isEmpty() const;

51

52 int checkingStart() const;

53 int checkingEnd() const;

54 int checkingLength() const;

55

56 bool checkingRangeCovers(int location, int length) const { return location < checkingEnd() && location + length > checkingStart(); }

57 EphemeralRange paragraphRange() const;

58 void setParagraphRange(const EphemeralRange&);

59

60 EphemeralRange checkingRange() const { return m_checkingRange; }

61

62 private:

63 void invalidateParagraphRangeValues();

64 EphemeralRange offsetAsRange() const;

65

66 bool isTextEmpty() const { return text().isEmpty(); }

67 bool isRangeEmpty() const { return checkingStart() >= checkingEnd(); }

68

69 EphemeralRange m_checkingRange;

70 mutable EphemeralRange m_paragraphRange;

71 mutable EphemeralRange m_offsetAsRange;

72 mutable String m_text;

73 mutable int m_checkingStart;

74 mutable int m_checkingEnd;

75 mutable int m_checkingLength;

76 };

77

78 } // namespace blink

79

80 #endif // TextCheckingHelper_h

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