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1 /* | 1 /* |
2 * Copyright (C) 2012 Google Inc. All rights reserved. | 2 * Copyright (C) 2012 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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46 return; | 46 return; |
47 | 47 |
48 const unsigned halfMaxLength = maxLength / 2; | 48 const unsigned halfMaxLength = maxLength / 2; |
49 CharacterIterator forwardIterator(makeRange(visiblePosition, endOfDocument(v
isiblePosition)).get(), TextIteratorStopsOnFormControls); | 49 CharacterIterator forwardIterator(makeRange(visiblePosition, endOfDocument(v
isiblePosition)).get(), TextIteratorStopsOnFormControls); |
50 if (!forwardIterator.atEnd()) | 50 if (!forwardIterator.atEnd()) |
51 forwardIterator.advance(maxLength - halfMaxLength); | 51 forwardIterator.advance(maxLength - halfMaxLength); |
52 | 52 |
53 Position position = visiblePosition.deepEquivalent().parentAnchoredEquivalen
t(); | 53 Position position = visiblePosition.deepEquivalent().parentAnchoredEquivalen
t(); |
54 Document* document = position.document(); | 54 Document* document = position.document(); |
55 ASSERT(document); | 55 ASSERT(document); |
56 RefPtr<Range> forwardRange = forwardIterator.range(); | 56 RefPtrWillBeRawPtr<Range> forwardRange = forwardIterator.range(); |
57 if (!forwardRange || !Range::create(*document, position, forwardRange->start
Position())->text().length()) { | 57 if (!forwardRange || !Range::create(*document, position, forwardRange->start
Position())->text().length()) { |
58 ASSERT(forwardRange); | 58 ASSERT(forwardRange); |
59 return; | 59 return; |
60 } | 60 } |
61 | 61 |
62 BackwardsCharacterIterator backwardsIterator(makeRange(startOfDocument(visib
lePosition), visiblePosition).get(), TextIteratorStopsOnFormControls); | 62 BackwardsCharacterIterator backwardsIterator(makeRange(startOfDocument(visib
lePosition), visiblePosition).get(), TextIteratorStopsOnFormControls); |
63 if (!backwardsIterator.atEnd()) | 63 if (!backwardsIterator.atEnd()) |
64 backwardsIterator.advance(halfMaxLength); | 64 backwardsIterator.advance(halfMaxLength); |
65 | 65 |
66 RefPtr<Range> backwardsRange = backwardsIterator.range(); | 66 RefPtrWillBeRawPtr<Range> backwardsRange = backwardsIterator.range(); |
67 if (!backwardsRange) { | 67 if (!backwardsRange) { |
68 ASSERT(backwardsRange); | 68 ASSERT(backwardsRange); |
69 return; | 69 return; |
70 } | 70 } |
71 | 71 |
72 m_positionOffsetInContent = Range::create(*document, backwardsRange->endPosi
tion(), position)->text().length(); | 72 m_positionOffsetInContent = Range::create(*document, backwardsRange->endPosi
tion(), position)->text().length(); |
73 m_contentRange = Range::create(*document, backwardsRange->endPosition(), for
wardRange->startPosition()); | 73 m_contentRange = Range::create(*document, backwardsRange->endPosition(), for
wardRange->startPosition()); |
74 ASSERT(m_contentRange); | 74 ASSERT(m_contentRange); |
75 } | 75 } |
76 | 76 |
77 PassRefPtr<Range> SurroundingText::rangeFromContentOffsets(unsigned startOffsetI
nContent, unsigned endOffsetInContent) | 77 PassRefPtrWillBeRawPtr<Range> SurroundingText::rangeFromContentOffsets(unsigned
startOffsetInContent, unsigned endOffsetInContent) |
78 { | 78 { |
79 if (startOffsetInContent >= endOffsetInContent || endOffsetInContent > conte
nt().length()) | 79 if (startOffsetInContent >= endOffsetInContent || endOffsetInContent > conte
nt().length()) |
80 return nullptr; | 80 return nullptr; |
81 | 81 |
82 CharacterIterator iterator(m_contentRange.get()); | 82 CharacterIterator iterator(m_contentRange.get()); |
83 | 83 |
84 ASSERT(!iterator.atEnd()); | 84 ASSERT(!iterator.atEnd()); |
85 iterator.advance(startOffsetInContent); | 85 iterator.advance(startOffsetInContent); |
86 | 86 |
87 ASSERT(iterator.range()); | 87 ASSERT(iterator.range()); |
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103 return m_contentRange->text(); | 103 return m_contentRange->text(); |
104 return String(); | 104 return String(); |
105 } | 105 } |
106 | 106 |
107 unsigned SurroundingText::positionOffsetInContent() const | 107 unsigned SurroundingText::positionOffsetInContent() const |
108 { | 108 { |
109 return m_positionOffsetInContent; | 109 return m_positionOffsetInContent; |
110 } | 110 } |
111 | 111 |
112 } // namespace WebCore | 112 } // namespace WebCore |
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