void Editor::transpose()
{
if (!canEdit())
return;
VisibleSelection selection = m_frame.selection().selection();
if (!selection.isCaret())
return;
// Make a selection that goes back one character and forward two characters.
VisiblePosition caret = selection.visibleStart();
VisiblePosition next = isEndOfParagraph(caret) ? caret : caret.next();
VisiblePosition previous = next.previous();
if (next == previous)
return;
previous = previous.previous();
if (!inSameParagraph(next, previous))
return;
RefPtr<Range> range = makeRange(previous, next);
if (!range)
return;
VisibleSelection newSelection(range.get(), DOWNSTREAM);
// Transpose the two characters.
String text = plainText(range.get());
if (text.length() != 2)
return;
String transposed = text.right(1) + text.left(1);
// Select the two characters.
if (newSelection != m_frame.selection().selection())
m_frame.selection().setSelection(newSelection);
// Insert the transposed characters.
replaceSelectionWithText(transposed, false, false);
}
String TextCheckingHelper::findFirstMisspellingOrBadGrammar(bool& outIsSpelling, int& outFirstFoundOffset, GrammarDetail& outGrammarDetail)
{
if (!unifiedTextCheckerEnabled())
return "";
String firstFoundItem;
String misspelledWord;
String badGrammarPhrase;
// Initialize out parameters; these will be updated if we find something to return.
outIsSpelling = true;
outFirstFoundOffset = 0;
outGrammarDetail.location = -1;
outGrammarDetail.length = 0;
outGrammarDetail.guesses.clear();
outGrammarDetail.userDescription = "";
// Expand the search range to encompass entire paragraphs, since text checking needs that much context.
// Determine the character offset from the start of the paragraph to the start of the original search range,
// since we will want to ignore results in this area.
Position paragraphStart = startOfParagraph(createVisiblePosition(m_start)).toParentAnchoredPosition();
Position paragraphEnd = m_end;
int totalRangeLength = TextIterator::rangeLength(paragraphStart, paragraphEnd);
paragraphEnd = endOfParagraph(createVisiblePosition(m_start)).toParentAnchoredPosition();
int rangeStartOffset = TextIterator::rangeLength(paragraphStart, m_start);
int totalLengthProcessed = 0;
bool firstIteration = true;
bool lastIteration = false;
while (totalLengthProcessed < totalRangeLength) {
// Iterate through the search range by paragraphs, checking each one for spelling and grammar.
int currentLength = TextIterator::rangeLength(paragraphStart, paragraphEnd);
int currentStartOffset = firstIteration ? rangeStartOffset : 0;
int currentEndOffset = currentLength;
if (inSameParagraph(createVisiblePosition(paragraphStart), createVisiblePosition(m_end))) {
// Determine the character offset from the end of the original search range to the end of the paragraph,
// since we will want to ignore results in this area.
currentEndOffset = TextIterator::rangeLength(paragraphStart, m_end);
lastIteration = true;
}
if (currentStartOffset < currentEndOffset) {
String paragraphString = plainText(EphemeralRange(paragraphStart, paragraphEnd));
if (paragraphString.length() > 0) {
bool foundGrammar = false;
int spellingLocation = 0;
int grammarPhraseLocation = 0;
int grammarDetailLocation = 0;
unsigned grammarDetailIndex = 0;
Vector<TextCheckingResult> results;
TextCheckingTypeMask checkingTypes = TextCheckingTypeSpelling | TextCheckingTypeGrammar;
checkTextOfParagraph(m_client->textChecker(), paragraphString, checkingTypes, results);
for (unsigned i = 0; i < results.size(); i++) {
const TextCheckingResult* result = &results[i];
if (result->decoration == TextDecorationTypeSpelling && result->location >= currentStartOffset && result->location + result->length <= currentEndOffset) {
ASSERT(result->length > 0 && result->location >= 0);
spellingLocation = result->location;
misspelledWord = paragraphString.substring(result->location, result->length);
ASSERT(misspelledWord.length());
break;
}
if (result->decoration == TextDecorationTypeGrammar && result->location < currentEndOffset && result->location + result->length > currentStartOffset) {
ASSERT(result->length > 0 && result->location >= 0);
// We can't stop after the first grammar result, since there might still be a spelling result after
// it begins but before the first detail in it, but we can stop if we find a second grammar result.
if (foundGrammar)
break;
for (unsigned j = 0; j < result->details.size(); j++) {
const GrammarDetail* detail = &result->details[j];
ASSERT(detail->length > 0 && detail->location >= 0);
if (result->location + detail->location >= currentStartOffset && result->location + detail->location + detail->length <= currentEndOffset && (!foundGrammar || result->location + detail->location < grammarDetailLocation)) {
grammarDetailIndex = j;
grammarDetailLocation = result->location + detail->location;
foundGrammar = true;
}
}
if (foundGrammar) {
grammarPhraseLocation = result->location;
outGrammarDetail = result->details[grammarDetailIndex];
badGrammarPhrase = paragraphString.substring(result->location, result->length);
ASSERT(badGrammarPhrase.length());
}
}
}
if (!misspelledWord.isEmpty() && (badGrammarPhrase.isEmpty() || spellingLocation <= grammarDetailLocation)) {
int spellingOffset = spellingLocation - currentStartOffset;
if (!firstIteration)
spellingOffset += TextIterator::rangeLength(m_start, paragraphStart);
outIsSpelling = true;
outFirstFoundOffset = spellingOffset;
firstFoundItem = misspelledWord;
break;
}
if (!badGrammarPhrase.isEmpty()) {
int grammarPhraseOffset = grammarPhraseLocation - currentStartOffset;
if (!firstIteration)
grammarPhraseOffset += TextIterator::rangeLength(m_start, paragraphStart);
outIsSpelling = false;
outFirstFoundOffset = grammarPhraseOffset;
firstFoundItem = badGrammarPhrase;
break;
}
}
}
if (lastIteration || totalLengthProcessed + currentLength >= totalRangeLength)
break;
VisiblePosition newParagraphStart = startOfNextParagraph(createVisiblePosition(paragraphEnd));
paragraphStart = newParagraphStart.toParentAnchoredPosition();
paragraphEnd = endOfParagraph(newParagraphStart).toParentAnchoredPosition();
firstIteration = false;
totalLengthProcessed += currentLength;
}
return firstFoundItem;
}
String TextCheckingHelper::findFirstMisspellingOrBadGrammar(bool checkGrammar, bool& outIsSpelling, int& outFirstFoundOffset, GrammarDetail& outGrammarDetail)
{
#if PLATFORM(MAC) && !defined(BUILDING_ON_TIGER) && !defined(BUILDING_ON_LEOPARD)
String firstFoundItem;
String misspelledWord;
String badGrammarPhrase;
ExceptionCode ec = 0;
// Initialize out parameters; these will be updated if we find something to return.
outIsSpelling = true;
outFirstFoundOffset = 0;
outGrammarDetail.location = -1;
outGrammarDetail.length = 0;
outGrammarDetail.guesses.clear();
outGrammarDetail.userDescription = "";
// Expand the search range to encompass entire paragraphs, since text checking needs that much context.
// Determine the character offset from the start of the paragraph to the start of the original search range,
// since we will want to ignore results in this area.
RefPtr<Range> paragraphRange = m_range->cloneRange(ec);
setStart(paragraphRange.get(), startOfParagraph(m_range->startPosition()));
int totalRangeLength = TextIterator::rangeLength(paragraphRange.get());
setEnd(paragraphRange.get(), endOfParagraph(m_range->startPosition()));
RefPtr<Range> offsetAsRange = Range::create(paragraphRange->startContainer(ec)->document(), paragraphRange->startPosition(), m_range->startPosition());
int rangeStartOffset = TextIterator::rangeLength(offsetAsRange.get());
int totalLengthProcessed = 0;
bool firstIteration = true;
bool lastIteration = false;
while (totalLengthProcessed < totalRangeLength) {
// Iterate through the search range by paragraphs, checking each one for spelling and grammar.
int currentLength = TextIterator::rangeLength(paragraphRange.get());
int currentStartOffset = firstIteration ? rangeStartOffset : 0;
int currentEndOffset = currentLength;
if (inSameParagraph(paragraphRange->startPosition(), m_range->endPosition())) {
// Determine the character offset from the end of the original search range to the end of the paragraph,
// since we will want to ignore results in this area.
RefPtr<Range> endOffsetAsRange = Range::create(paragraphRange->startContainer(ec)->document(), paragraphRange->startPosition(), m_range->endPosition());
currentEndOffset = TextIterator::rangeLength(endOffsetAsRange.get());
lastIteration = true;
}
if (currentStartOffset < currentEndOffset) {
String paragraphString = plainText(paragraphRange.get());
if (paragraphString.length() > 0) {
bool foundGrammar = false;
int spellingLocation = 0;
int grammarPhraseLocation = 0;
int grammarDetailLocation = 0;
unsigned grammarDetailIndex = 0;
Vector<TextCheckingResult> results;
uint64_t checkingTypes = checkGrammar ? (TextCheckingTypeSpelling | TextCheckingTypeGrammar) : TextCheckingTypeSpelling;
m_client->checkTextOfParagraph(paragraphString.characters(), paragraphString.length(), checkingTypes, results);
for (unsigned i = 0; i < results.size(); i++) {
const TextCheckingResult* result = &results[i];
if (result->type == TextCheckingTypeSpelling && result->location >= currentStartOffset && result->location + result->length <= currentEndOffset) {
ASSERT(result->length > 0 && result->location >= 0);
spellingLocation = result->location;
misspelledWord = paragraphString.substring(result->location, result->length);
ASSERT(misspelledWord.length());
break;
}
if (checkGrammar && result->type == TextCheckingTypeGrammar && result->location < currentEndOffset && result->location + result->length > currentStartOffset) {
ASSERT(result->length > 0 && result->location >= 0);
// We can't stop after the first grammar result, since there might still be a spelling result after
// it begins but before the first detail in it, but we can stop if we find a second grammar result.
if (foundGrammar)
break;
for (unsigned j = 0; j < result->details.size(); j++) {
const GrammarDetail* detail = &result->details[j];
ASSERT(detail->length > 0 && detail->location >= 0);
if (result->location + detail->location >= currentStartOffset && result->location + detail->location + detail->length <= currentEndOffset && (!foundGrammar || result->location + detail->location < grammarDetailLocation)) {
grammarDetailIndex = j;
grammarDetailLocation = result->location + detail->location;
foundGrammar = true;
}
}
if (foundGrammar) {
grammarPhraseLocation = result->location;
outGrammarDetail = result->details[grammarDetailIndex];
badGrammarPhrase = paragraphString.substring(result->location, result->length);
ASSERT(badGrammarPhrase.length());
}
}
}
if (!misspelledWord.isEmpty() && (!checkGrammar || badGrammarPhrase.isEmpty() || spellingLocation <= grammarDetailLocation)) {
int spellingOffset = spellingLocation - currentStartOffset;
if (!firstIteration) {
RefPtr<Range> paragraphOffsetAsRange = Range::create(paragraphRange->startContainer(ec)->document(), m_range->startPosition(), paragraphRange->startPosition());
spellingOffset += TextIterator::rangeLength(paragraphOffsetAsRange.get());
}
outIsSpelling = true;
outFirstFoundOffset = spellingOffset;
firstFoundItem = misspelledWord;
break;
}
if (checkGrammar && !badGrammarPhrase.isEmpty()) {
int grammarPhraseOffset = grammarPhraseLocation - currentStartOffset;
if (!firstIteration) {
RefPtr<Range> paragraphOffsetAsRange = Range::create(paragraphRange->startContainer(ec)->document(), m_range->startPosition(), paragraphRange->startPosition());
grammarPhraseOffset += TextIterator::rangeLength(paragraphOffsetAsRange.get());
}
outIsSpelling = false;
outFirstFoundOffset = grammarPhraseOffset;
firstFoundItem = badGrammarPhrase;
break;
}
}
}
if (lastIteration || totalLengthProcessed + currentLength >= totalRangeLength)
break;
VisiblePosition newParagraphStart = startOfNextParagraph(paragraphRange->endPosition());
setStart(paragraphRange.get(), newParagraphStart);
setEnd(paragraphRange.get(), endOfParagraph(newParagraphStart));
firstIteration = false;
totalLengthProcessed += currentLength;
}
return firstFoundItem;
#else
ASSERT_NOT_REACHED();
UNUSED_PARAM(checkGrammar);
UNUSED_PARAM(outIsSpelling);
UNUSED_PARAM(outFirstFoundOffset);
UNUSED_PARAM(outGrammarDetail);
return "";
#endif
}