| /* |
| * Copyright (C) 2006, 2007, 2014 Apple Inc. All rights reserved. |
| * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies) |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY |
| * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR |
| * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
| * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "TextCheckingHelper.h" |
| |
| #include "Document.h" |
| #include "DocumentMarkerController.h" |
| #include "Frame.h" |
| #include "FrameSelection.h" |
| #include "Settings.h" |
| #include "TextCheckerClient.h" |
| #include "TextIterator.h" |
| #include "VisiblePosition.h" |
| #include "VisibleUnits.h" |
| #include <unicode/ubrk.h> |
| #include <wtf/text/StringView.h> |
| #include <wtf/text/TextBreakIterator.h> |
| |
| namespace WebCore { |
| |
| #if !USE(UNIFIED_TEXT_CHECKING) |
| |
| #if USE(GRAMMAR_CHECKING) |
| |
| static void findGrammaticalErrors(TextCheckerClient& client, StringView text, Vector<TextCheckingResult>& results) |
| { |
| for (unsigned checkLocation = 0; checkLocation < text.length(); ) { |
| int badGrammarLocation = -1; |
| int badGrammarLength = 0; |
| Vector<GrammarDetail> badGrammarDetails; |
| client.checkGrammarOfString(text.substring(checkLocation), badGrammarDetails, &badGrammarLocation, &badGrammarLength); |
| if (!badGrammarLength) |
| break; |
| |
| ASSERT(badGrammarLocation >= 0); |
| ASSERT(static_cast<unsigned>(badGrammarLocation) <= text.length() - checkLocation); |
| ASSERT(badGrammarLength > 0); |
| ASSERT(static_cast<unsigned>(badGrammarLength) <= text.length() - checkLocation - badGrammarLocation); |
| |
| TextCheckingResult badGrammar; |
| badGrammar.type = TextCheckingType::Grammar; |
| badGrammar.location = checkLocation + badGrammarLocation; |
| badGrammar.length = badGrammarLength; |
| badGrammar.details = WTFMove(badGrammarDetails); |
| results.append(badGrammar); |
| |
| checkLocation += badGrammarLocation + badGrammarLength; |
| } |
| } |
| |
| #endif |
| |
| static void findMisspellings(TextCheckerClient& client, StringView text, Vector<TextCheckingResult>& results) |
| { |
| UBreakIterator* iterator = wordBreakIterator(text); |
| if (!iterator) |
| return; |
| for (int wordStart = ubrk_current(iterator); wordStart >= 0; ) { |
| int wordEnd = ubrk_next(iterator); |
| if (wordEnd < 0) |
| break; |
| |
| int wordLength = wordEnd - wordStart; |
| int misspellingLocation = -1; |
| int misspellingLength = 0; |
| client.checkSpellingOfString(text.substring(wordStart, wordLength), &misspellingLocation, &misspellingLength); |
| |
| if (misspellingLength > 0) { |
| ASSERT(misspellingLocation >= 0); |
| ASSERT(misspellingLocation <= wordLength); |
| ASSERT(misspellingLength > 0); |
| ASSERT(misspellingLocation + misspellingLength <= wordLength); |
| |
| TextCheckingResult misspelling; |
| misspelling.type = TextCheckingType::Spelling; |
| misspelling.location = wordStart + misspellingLocation; |
| misspelling.length = misspellingLength; |
| misspelling.replacement = client.getAutoCorrectSuggestionForMisspelledWord(text.substring(misspelling.location, misspelling.length).toStringWithoutCopying()); |
| results.append(misspelling); |
| } |
| |
| wordStart = wordEnd; |
| } |
| } |
| |
| #endif |
| |
| static Ref<Range> expandToParagraphBoundary(Range& range) |
| { |
| Ref<Range> paragraphRange = range.cloneRange(); |
| setStart(paragraphRange.ptr(), startOfParagraph(range.startPosition())); |
| setEnd(paragraphRange.ptr(), endOfParagraph(range.endPosition())); |
| return paragraphRange; |
| } |
| |
| TextCheckingParagraph::TextCheckingParagraph(Ref<Range>&& checkingAndAutomaticReplacementRange) |
| : m_checkingRange(checkingAndAutomaticReplacementRange.copyRef()) |
| , m_automaticReplacementRange(checkingAndAutomaticReplacementRange.copyRef()) |
| { |
| } |
| |
| TextCheckingParagraph::TextCheckingParagraph(Ref<Range>&& checkingRange, Ref<Range>&& automaticReplacementRange, RefPtr<Range>&& paragraphRange) |
| : m_checkingRange(WTFMove(checkingRange)) |
| , m_automaticReplacementRange(WTFMove(automaticReplacementRange)) |
| , m_paragraphRange(WTFMove(paragraphRange)) |
| { |
| } |
| |
| void TextCheckingParagraph::expandRangeToNextEnd() |
| { |
| setEnd(¶graphRange(), endOfParagraph(startOfNextParagraph(paragraphRange().startPosition()))); |
| invalidateParagraphRangeValues(); |
| } |
| |
| void TextCheckingParagraph::invalidateParagraphRangeValues() |
| { |
| m_checkingStart.reset(); |
| m_checkingEnd.reset(); |
| m_automaticReplacementStart.reset(); |
| m_automaticReplacementLength.reset(); |
| m_offsetAsRange = nullptr; |
| m_text = String(); |
| } |
| |
| int TextCheckingParagraph::rangeLength() const |
| { |
| return TextIterator::rangeLength(¶graphRange()); |
| } |
| |
| Range& TextCheckingParagraph::paragraphRange() const |
| { |
| if (!m_paragraphRange) |
| m_paragraphRange = expandToParagraphBoundary(m_checkingRange); |
| return *m_paragraphRange; |
| } |
| |
| Ref<Range> TextCheckingParagraph::subrange(int characterOffset, int characterCount) const |
| { |
| return TextIterator::subrange(paragraphRange(), characterOffset, characterCount); |
| } |
| |
| ExceptionOr<int> TextCheckingParagraph::offsetTo(const Position& position) const |
| { |
| if (!position.containerNode()) |
| return Exception { TypeError }; |
| |
| auto range = offsetAsRange().cloneRange(); |
| auto result = range->setEnd(*position.containerNode(), position.computeOffsetInContainerNode()); |
| if (result.hasException()) |
| return result.releaseException(); |
| return TextIterator::rangeLength(range.ptr()); |
| } |
| |
| bool TextCheckingParagraph::isEmpty() const |
| { |
| // Both predicates should have same result, but we check both just for sure. |
| // We need to investigate to remove this redundancy. |
| return checkingStart() >= checkingEnd() || text().isEmpty(); |
| } |
| |
| Range& TextCheckingParagraph::offsetAsRange() const |
| { |
| if (!m_offsetAsRange) |
| m_offsetAsRange = Range::create(paragraphRange().startContainer().document(), paragraphRange().startPosition(), m_checkingRange->startPosition()); |
| |
| return *m_offsetAsRange; |
| } |
| |
| const String& TextCheckingParagraph::text() const |
| { |
| if (m_text.isEmpty()) |
| m_text = plainText(¶graphRange()); |
| return m_text; |
| } |
| |
| int TextCheckingParagraph::checkingStart() const |
| { |
| if (!m_checkingStart) |
| m_checkingStart = TextIterator::rangeLength(&offsetAsRange()); |
| return *m_checkingStart; |
| } |
| |
| int TextCheckingParagraph::checkingEnd() const |
| { |
| if (!m_checkingEnd) |
| m_checkingEnd = checkingStart() + TextIterator::rangeLength(m_checkingRange.ptr()); |
| return *m_checkingEnd; |
| } |
| |
| int TextCheckingParagraph::checkingLength() const |
| { |
| if (!m_checkingLength) |
| m_checkingLength = TextIterator::rangeLength(m_checkingRange.ptr()); |
| return *m_checkingLength; |
| } |
| |
| int TextCheckingParagraph::automaticReplacementStart() const |
| { |
| if (m_automaticReplacementStart) |
| return *m_automaticReplacementStart; |
| |
| auto startOffsetRange = Range::create(paragraphRange().startContainer().document(), paragraphRange().startPosition(), m_automaticReplacementRange->startPosition()); |
| m_automaticReplacementStart = TextIterator::rangeLength(startOffsetRange.ptr()); |
| return *m_automaticReplacementStart; |
| } |
| |
| int TextCheckingParagraph::automaticReplacementLength() const |
| { |
| if (m_automaticReplacementLength) |
| return *m_automaticReplacementLength; |
| |
| auto endOffsetRange = Range::create(paragraphRange().startContainer().document(), paragraphRange().startPosition(), m_automaticReplacementRange->endPosition()); |
| m_automaticReplacementLength = TextIterator::rangeLength(endOffsetRange.ptr()) - automaticReplacementStart(); |
| return *m_automaticReplacementLength; |
| } |
| |
| TextCheckingHelper::TextCheckingHelper(EditorClient& client, Range& range) |
| : m_client(client) |
| , m_range(range) |
| { |
| } |
| |
| TextCheckingHelper::~TextCheckingHelper() = default; |
| |
| String TextCheckingHelper::findFirstMisspelling(int& firstMisspellingOffset, bool markAll, RefPtr<Range>& firstMisspellingRange) |
| { |
| firstMisspellingOffset = 0; |
| |
| String firstMisspelling; |
| int currentChunkOffset = 0; |
| |
| for (WordAwareIterator it(m_range); !it.atEnd(); currentChunkOffset += it.text().length(), it.advance()) { |
| StringView text = it.text(); |
| int textLength = text.length(); |
| |
| // Skip some work for one-space-char hunks. |
| if (textLength == 1 && text[0] == ' ') |
| continue; |
| |
| int misspellingLocation = -1; |
| int misspellingLength = 0; |
| m_client.textChecker()->checkSpellingOfString(text, &misspellingLocation, &misspellingLength); |
| |
| // 5490627 shows that there was some code path here where the String constructor below crashes. |
| // We don't know exactly what combination of bad input caused this, so we're making this much |
| // more robust against bad input on release builds. |
| ASSERT(misspellingLength >= 0); |
| ASSERT(misspellingLocation >= -1); |
| ASSERT(!misspellingLength || misspellingLocation >= 0); |
| ASSERT(misspellingLocation < textLength); |
| ASSERT(misspellingLength <= textLength); |
| ASSERT(misspellingLocation + misspellingLength <= textLength); |
| |
| if (misspellingLocation >= 0 && misspellingLength > 0 && misspellingLocation < textLength && misspellingLength <= textLength && misspellingLocation + misspellingLength <= textLength) { |
| // Compute range of misspelled word |
| auto misspellingRange = TextIterator::subrange(m_range, currentChunkOffset + misspellingLocation, misspellingLength); |
| |
| // Remember first-encountered misspelling and its offset. |
| if (!firstMisspelling) { |
| firstMisspellingOffset = currentChunkOffset + misspellingLocation; |
| firstMisspelling = text.substring(misspellingLocation, misspellingLength).toString(); |
| firstMisspellingRange = misspellingRange.ptr(); |
| } |
| |
| // Store marker for misspelled word. |
| misspellingRange->startContainer().document().markers().addMarker(misspellingRange, DocumentMarker::Spelling); |
| |
| // Bail out if we're marking only the first misspelling, and not all instances. |
| if (!markAll) |
| break; |
| } |
| } |
| |
| return firstMisspelling; |
| } |
| |
| String TextCheckingHelper::findFirstMisspellingOrBadGrammar(bool checkGrammar, bool& outIsSpelling, int& outFirstFoundOffset, GrammarDetail& outGrammarDetail) |
| { |
| if (!unifiedTextCheckerEnabled()) |
| return emptyString(); |
| |
| if (platformDrivenTextCheckerEnabled()) |
| return emptyString(); |
| |
| 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 = emptyString(); |
| |
| // 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. |
| Ref<Range> paragraphRange = m_range->cloneRange(); |
| setStart(paragraphRange.ptr(), startOfParagraph(m_range->startPosition())); |
| int totalRangeLength = TextIterator::rangeLength(paragraphRange.ptr()); |
| setEnd(paragraphRange.ptr(), endOfParagraph(m_range->startPosition())); |
| |
| Ref<Range> offsetAsRange = Range::create(paragraphRange->startContainer().document(), paragraphRange->startPosition(), m_range->startPosition()); |
| int rangeStartOffset = TextIterator::rangeLength(offsetAsRange.ptr()); |
| 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.ptr()); |
| 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. |
| auto endOffsetAsRange = Range::create(paragraphRange->startContainer().document(), paragraphRange->startPosition(), m_range->endPosition()); |
| currentEndOffset = TextIterator::rangeLength(endOffsetAsRange.ptr()); |
| lastIteration = true; |
| } |
| if (currentStartOffset < currentEndOffset) { |
| String paragraphString = plainText(paragraphRange.ptr()); |
| if (paragraphString.length() > 0) { |
| bool foundGrammar = false; |
| int spellingLocation = 0; |
| int grammarPhraseLocation = 0; |
| int grammarDetailLocation = 0; |
| unsigned grammarDetailIndex = 0; |
| |
| Vector<TextCheckingResult> results; |
| OptionSet<TextCheckingType> checkingTypes { TextCheckingType::Spelling }; |
| if (checkGrammar) |
| checkingTypes.add(TextCheckingType::Grammar); |
| VisibleSelection currentSelection; |
| if (Frame* frame = paragraphRange->ownerDocument().frame()) |
| currentSelection = frame->selection().selection(); |
| checkTextOfParagraph(*m_client.textChecker(), paragraphString, checkingTypes, results, currentSelection); |
| |
| for (auto& result : results) { |
| if (result.type == TextCheckingType::Spelling && result.location >= currentStartOffset && result.location + result.length <= currentEndOffset) { |
| ASSERT(result.length > 0); |
| ASSERT(result.location >= 0); |
| spellingLocation = result.location; |
| misspelledWord = paragraphString.substring(result.location, result.length); |
| ASSERT(misspelledWord.length()); |
| break; |
| } |
| if (checkGrammar && result.type == TextCheckingType::Grammar && result.location < currentEndOffset && result.location + result.length > currentStartOffset) { |
| ASSERT(result.length > 0); |
| ASSERT(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); |
| ASSERT(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) { |
| auto paragraphOffsetAsRange = Range::create(paragraphRange->startContainer().document(), m_range->startPosition(), paragraphRange->startPosition()); |
| spellingOffset += TextIterator::rangeLength(paragraphOffsetAsRange.ptr()); |
| } |
| outIsSpelling = true; |
| outFirstFoundOffset = spellingOffset; |
| firstFoundItem = misspelledWord; |
| break; |
| } |
| if (checkGrammar && !badGrammarPhrase.isEmpty()) { |
| int grammarPhraseOffset = grammarPhraseLocation - currentStartOffset; |
| if (!firstIteration) { |
| auto paragraphOffsetAsRange = Range::create(paragraphRange->startContainer().document(), m_range->startPosition(), paragraphRange->startPosition()); |
| grammarPhraseOffset += TextIterator::rangeLength(paragraphOffsetAsRange.ptr()); |
| } |
| outIsSpelling = false; |
| outFirstFoundOffset = grammarPhraseOffset; |
| firstFoundItem = badGrammarPhrase; |
| break; |
| } |
| } |
| } |
| if (lastIteration || totalLengthProcessed + currentLength >= totalRangeLength) |
| break; |
| VisiblePosition newParagraphStart = startOfNextParagraph(paragraphRange->endPosition()); |
| setStart(paragraphRange.ptr(), newParagraphStart); |
| setEnd(paragraphRange.ptr(), endOfParagraph(newParagraphStart)); |
| firstIteration = false; |
| totalLengthProcessed += currentLength; |
| } |
| return firstFoundItem; |
| } |
| |
| #if USE(GRAMMAR_CHECKING) |
| |
| int TextCheckingHelper::findFirstGrammarDetail(const Vector<GrammarDetail>& grammarDetails, int badGrammarPhraseLocation, int startOffset, int endOffset, bool markAll) const |
| { |
| // Found some bad grammar. Find the earliest detail range that starts in our search range (if any). |
| // Optionally add a DocumentMarker for each detail in the range. |
| int earliestDetailLocationSoFar = -1; |
| int earliestDetailIndex = -1; |
| for (unsigned i = 0; i < grammarDetails.size(); i++) { |
| const GrammarDetail* detail = &grammarDetails[i]; |
| ASSERT(detail->length > 0); |
| ASSERT(detail->location >= 0); |
| |
| int detailStartOffsetInParagraph = badGrammarPhraseLocation + detail->location; |
| |
| // Skip this detail if it starts before the original search range |
| if (detailStartOffsetInParagraph < startOffset) |
| continue; |
| |
| // Skip this detail if it starts after the original search range |
| if (detailStartOffsetInParagraph >= endOffset) |
| continue; |
| |
| if (markAll) { |
| auto badGrammarRange = TextIterator::subrange(m_range, badGrammarPhraseLocation - startOffset + detail->location, detail->length); |
| badGrammarRange->startContainer().document().markers().addMarker(badGrammarRange, DocumentMarker::Grammar, detail->userDescription); |
| } |
| |
| // Remember this detail only if it's earlier than our current candidate (the details aren't in a guaranteed order) |
| if (earliestDetailIndex < 0 || earliestDetailLocationSoFar > detail->location) { |
| earliestDetailIndex = i; |
| earliestDetailLocationSoFar = detail->location; |
| } |
| } |
| |
| return earliestDetailIndex; |
| } |
| |
| String TextCheckingHelper::findFirstBadGrammar(GrammarDetail& outGrammarDetail, int& outGrammarPhraseOffset, bool markAll) const |
| { |
| // Initialize out parameters; these will be updated if we find something to return. |
| outGrammarDetail.location = -1; |
| outGrammarDetail.length = 0; |
| outGrammarDetail.guesses.clear(); |
| outGrammarDetail.userDescription = emptyString(); |
| outGrammarPhraseOffset = 0; |
| |
| String firstBadGrammarPhrase; |
| |
| // Expand the search range to encompass entire paragraphs, since grammar 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. |
| TextCheckingParagraph paragraph(m_range.copyRef()); |
| |
| // Start checking from beginning of paragraph, but skip past results that occur before the start of the original search range. |
| for (int startOffset = 0; startOffset < paragraph.checkingEnd(); ) { |
| Vector<GrammarDetail> grammarDetails; |
| int badGrammarPhraseLocation = -1; |
| int badGrammarPhraseLength = 0; |
| m_client.textChecker()->checkGrammarOfString(StringView(paragraph.text()).substring(startOffset), grammarDetails, &badGrammarPhraseLocation, &badGrammarPhraseLength); |
| |
| if (!badGrammarPhraseLength) { |
| ASSERT(badGrammarPhraseLocation == -1); |
| return String(); |
| } |
| |
| ASSERT(badGrammarPhraseLocation >= 0); |
| badGrammarPhraseLocation += startOffset; |
| |
| // Found some bad grammar. Find the earliest detail range that starts in our search range (if any). |
| int badGrammarIndex = findFirstGrammarDetail(grammarDetails, badGrammarPhraseLocation, paragraph.checkingStart(), paragraph.checkingEnd(), markAll); |
| if (badGrammarIndex >= 0) { |
| ASSERT(static_cast<unsigned>(badGrammarIndex) < grammarDetails.size()); |
| outGrammarDetail = grammarDetails[badGrammarIndex]; |
| } |
| |
| // If we found a detail in range, then we have found the first bad phrase (unless we found one earlier but |
| // kept going so we could mark all instances). |
| if (badGrammarIndex >= 0 && firstBadGrammarPhrase.isEmpty()) { |
| outGrammarPhraseOffset = badGrammarPhraseLocation - paragraph.checkingStart(); |
| firstBadGrammarPhrase = paragraph.textSubstring(badGrammarPhraseLocation, badGrammarPhraseLength); |
| |
| // Found one. We're done now, unless we're marking each instance. |
| if (!markAll) |
| break; |
| } |
| |
| // These results were all between the start of the paragraph and the start of the search range; look |
| // beyond this phrase. |
| startOffset = badGrammarPhraseLocation + badGrammarPhraseLength; |
| } |
| |
| return firstBadGrammarPhrase; |
| } |
| |
| bool TextCheckingHelper::isUngrammatical() const |
| { |
| if (m_range->collapsed()) |
| return false; |
| |
| // Returns true only if the passed range exactly corresponds to a bad grammar detail range. This is analogous |
| // to isSelectionMisspelled. It's not good enough for there to be some bad grammar somewhere in the range, |
| // or overlapping the range; the ranges must exactly match. |
| int grammarPhraseOffset; |
| |
| GrammarDetail grammarDetail; |
| String badGrammarPhrase = findFirstBadGrammar(grammarDetail, grammarPhraseOffset, false); |
| |
| // No bad grammar in these parts at all. |
| if (badGrammarPhrase.isEmpty()) |
| return false; |
| |
| // Bad grammar, but phrase (e.g. sentence) starts beyond start of range. |
| if (grammarPhraseOffset > 0) |
| return false; |
| |
| ASSERT(grammarDetail.location >= 0); |
| ASSERT(grammarDetail.length > 0); |
| |
| // Bad grammar, but start of detail (e.g. ungrammatical word) doesn't match start of range |
| if (grammarDetail.location + grammarPhraseOffset) |
| return false; |
| |
| // Bad grammar at start of range, but end of bad grammar is before or after end of range |
| if (grammarDetail.length != TextIterator::rangeLength(m_range.ptr())) |
| return false; |
| |
| // Update the spelling panel to be displaying this error (whether or not the spelling panel is on screen). |
| // This is necessary to make a subsequent call to [NSSpellChecker ignoreWord:inSpellDocumentWithTag:] work |
| // correctly; that call behaves differently based on whether the spelling panel is displaying a misspelling |
| // or a grammar error. |
| m_client.updateSpellingUIWithGrammarString(badGrammarPhrase, grammarDetail); |
| |
| return true; |
| } |
| |
| #endif // USE(GRAMMAR_CHECKING) |
| |
| Vector<String> TextCheckingHelper::guessesForMisspelledOrUngrammaticalRange(bool checkGrammar, bool& misspelled, bool& ungrammatical) const |
| { |
| if (!unifiedTextCheckerEnabled()) |
| return Vector<String>(); |
| |
| if (platformDrivenTextCheckerEnabled()) |
| return Vector<String>(); |
| |
| Vector<String> guesses; |
| misspelled = false; |
| ungrammatical = false; |
| |
| if (m_range->collapsed()) |
| return guesses; |
| |
| // Expand the range to encompass entire paragraphs, since text checking needs that much context. |
| TextCheckingParagraph paragraph(m_range.copyRef()); |
| if (paragraph.isEmpty()) |
| return guesses; |
| |
| Vector<TextCheckingResult> results; |
| OptionSet<TextCheckingType> checkingTypes { TextCheckingType::Spelling }; |
| if (checkGrammar) |
| checkingTypes.add(TextCheckingType::Grammar); |
| VisibleSelection currentSelection; |
| if (Frame* frame = m_range->ownerDocument().frame()) |
| currentSelection = frame->selection().selection(); |
| checkTextOfParagraph(*m_client.textChecker(), paragraph.text(), checkingTypes, results, currentSelection); |
| |
| for (auto& result : results) { |
| if (result.type == TextCheckingType::Spelling && paragraph.checkingRangeMatches(result.location, result.length)) { |
| String misspelledWord = paragraph.checkingSubstring(); |
| ASSERT(misspelledWord.length()); |
| m_client.textChecker()->getGuessesForWord(misspelledWord, String(), currentSelection, guesses); |
| m_client.updateSpellingUIWithMisspelledWord(misspelledWord); |
| misspelled = true; |
| return guesses; |
| } |
| } |
| |
| if (!checkGrammar) |
| return guesses; |
| |
| for (auto& result : results) { |
| if (result.type == TextCheckingType::Grammar && paragraph.isCheckingRangeCoveredBy(result.location, result.length)) { |
| for (auto& detail : result.details) { |
| ASSERT(detail.length > 0); |
| ASSERT(detail.location >= 0); |
| if (paragraph.checkingRangeMatches(result.location + detail.location, detail.length)) { |
| String badGrammarPhrase = paragraph.textSubstring(result.location, result.length); |
| ASSERT(badGrammarPhrase.length()); |
| for (auto& guess : detail.guesses) |
| guesses.append(guess); |
| m_client.updateSpellingUIWithGrammarString(badGrammarPhrase, detail); |
| ungrammatical = true; |
| return guesses; |
| } |
| } |
| } |
| } |
| return guesses; |
| } |
| |
| void TextCheckingHelper::markAllMisspellings(RefPtr<Range>& firstMisspellingRange) |
| { |
| // Use the "markAll" feature of findFirstMisspelling. Ignore the return value and the "out parameter"; |
| // all we need to do is mark every instance. |
| int ignoredOffset; |
| findFirstMisspelling(ignoredOffset, true, firstMisspellingRange); |
| } |
| |
| #if USE(GRAMMAR_CHECKING) |
| void TextCheckingHelper::markAllBadGrammar() |
| { |
| // Use the "markAll" feature of ofindFirstBadGrammar. Ignore the return value and "out parameters"; all we need to |
| // do is mark every instance. |
| GrammarDetail ignoredGrammarDetail; |
| int ignoredOffset; |
| findFirstBadGrammar(ignoredGrammarDetail, ignoredOffset, true); |
| } |
| #endif |
| |
| bool TextCheckingHelper::unifiedTextCheckerEnabled() const |
| { |
| return WebCore::unifiedTextCheckerEnabled(m_range->ownerDocument().frame()); |
| } |
| |
| void checkTextOfParagraph(TextCheckerClient& client, StringView text, OptionSet<TextCheckingType> checkingTypes, Vector<TextCheckingResult>& results, const VisibleSelection& currentSelection) |
| { |
| #if USE(UNIFIED_TEXT_CHECKING) |
| results = client.checkTextOfParagraph(text, checkingTypes, currentSelection); |
| #else |
| UNUSED_PARAM(currentSelection); |
| |
| Vector<TextCheckingResult> mispellings; |
| if (checkingTypes.contains(TextCheckingType::Spelling)) |
| findMisspellings(client, text, mispellings); |
| |
| #if USE(GRAMMAR_CHECKING) |
| // Look for grammatical errors that occur before the first misspelling. |
| Vector<TextCheckingResult> grammaticalErrors; |
| if (checkingTypes.contains(TextCheckingType::Grammar)) { |
| unsigned grammarCheckLength = text.length(); |
| for (auto& mispelling : mispellings) |
| grammarCheckLength = std::min<unsigned>(grammarCheckLength, mispelling.location); |
| findGrammaticalErrors(client, text.substring(0, grammarCheckLength), grammaticalErrors); |
| } |
| |
| results = WTFMove(grammaticalErrors); |
| #endif |
| |
| if (results.isEmpty()) |
| results = WTFMove(mispellings); |
| else |
| results.appendVector(mispellings); |
| #endif // USE(UNIFIED_TEXT_CHECKING) |
| } |
| |
| bool unifiedTextCheckerEnabled(const Frame* frame) |
| { |
| if (!frame) |
| return false; |
| return frame->settings().unifiedTextCheckerEnabled(); |
| } |
| |
| bool platformDrivenTextCheckerEnabled() |
| { |
| #if ENABLE(PLATFORM_DRIVEN_TEXT_CHECKING) |
| return true; |
| #else |
| return false; |
| #endif |
| } |
| |
| } |
