1 files changed, 216 insertions, 44 deletions

diff --git a/Source/WebKit2/UIProcess/gtk/TextCheckerGtk.cpp b/Source/WebKit2/UIProcess/gtk/TextCheckerGtk.cpp
index 6bc419079..2513cbd69 100644
--- a/Source/WebKit2/UIProcess/gtk/TextCheckerGtk.cpp
+++ b/Source/WebKit2/UIProcess/gtk/TextCheckerGtk.cpp
@@ -1,6 +1,7 @@
 /*
  * Copyright (C) 2010 Apple Inc. All rights reserved.
  * Portions Copyright (c) 2010 Motorola Mobility, Inc.  All rights reserved.
+ * Copyright (C) 2011-2013 Samsung Electronics
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -28,119 +29,290 @@
 #include "TextChecker.h"
 
 #include "TextCheckerState.h"
-#include "WebTextChecker.h"
+#include "WebProcessPool.h"
 #include <WebCore/NotImplemented.h>
+#include <WebCore/TextCheckerEnchant.h>
+#include <unicode/ubrk.h>
+#include <wtf/NeverDestroyed.h>
+#include <wtf/text/TextBreakIterator.h>
 
 using namespace WebCore;
- 
+
 namespace WebKit {
 
-static TextCheckerState textCheckerState;
+#if ENABLE(SPELLCHECK)
+static WebCore::TextCheckerEnchant& enchantTextChecker()
+{
+    static NeverDestroyed<WebCore::TextCheckerEnchant> checker;
+    return checker;
+}
+#endif
 
-const TextCheckerState& TextChecker::state()
+TextCheckerState& checkerState()
 {
-    static bool didInitializeState = false;
-    if (didInitializeState)
-        return textCheckerState;
+    static TextCheckerState textCheckerState;
+    static std::once_flag onceFlag;
+    std::call_once(onceFlag, [] {
+        textCheckerState.isContinuousSpellCheckingEnabled = false;
+        textCheckerState.isGrammarCheckingEnabled = false;
+    });
+
+    return textCheckerState;
+}
 
-    WebTextCheckerClient& client = WebTextChecker::shared()->client();
-    textCheckerState.isContinuousSpellCheckingEnabled = client.continuousSpellCheckingEnabled();
-    textCheckerState.isGrammarCheckingEnabled =  client.grammarCheckingEnabled();
+const TextCheckerState& TextChecker::state()
+{
+    return checkerState();
+}
+    
+static bool testingModeEnabled = false;
+    
+void TextChecker::setTestingMode(bool enabled)
+{
+    testingModeEnabled = enabled;
+}
 
-    didInitializeState = true;
+bool TextChecker::isTestingMode()
+{
+    return testingModeEnabled;
+}
 
-    return textCheckerState;
+#if ENABLE(SPELLCHECK)
+static void updateStateForAllProcessPools()
+{
+    for (const auto& processPool : WebProcessPool::allProcessPools())
+        processPool->textCheckerStateChanged();
 }
-  
+#endif
+
 bool TextChecker::isContinuousSpellCheckingAllowed()
 {
-    return WebTextChecker::shared()->client().continuousSpellCheckingAllowed();
+#if ENABLE(SPELLCHECK)
+    return true;
+#else
+    return false;
+#endif
 }
 
 void TextChecker::setContinuousSpellCheckingEnabled(bool isContinuousSpellCheckingEnabled)
 {
-    if (state().isContinuousSpellCheckingEnabled == isContinuousSpellCheckingEnabled)
+#if ENABLE(SPELLCHECK)
+    if (checkerState().isContinuousSpellCheckingEnabled == isContinuousSpellCheckingEnabled)
         return;
-    textCheckerState.isContinuousSpellCheckingEnabled = isContinuousSpellCheckingEnabled;
-    WebTextChecker::shared()->client().setContinuousSpellCheckingEnabled(isContinuousSpellCheckingEnabled);
+    checkerState().isContinuousSpellCheckingEnabled = isContinuousSpellCheckingEnabled;
+    updateStateForAllProcessPools();
+#else
+    UNUSED_PARAM(isContinuousSpellCheckingEnabled);
+#endif
 }
 
 void TextChecker::setGrammarCheckingEnabled(bool isGrammarCheckingEnabled)
 {
-    if (state().isGrammarCheckingEnabled == isGrammarCheckingEnabled)
+#if ENABLE(SPELLCHECK)
+    if (checkerState().isGrammarCheckingEnabled == isGrammarCheckingEnabled)
         return;
-    textCheckerState.isGrammarCheckingEnabled = isGrammarCheckingEnabled;
-    WebTextChecker::shared()->client().setGrammarCheckingEnabled(isGrammarCheckingEnabled);
+    checkerState().isGrammarCheckingEnabled = isGrammarCheckingEnabled;
+    updateStateForAllProcessPools();
+#else
+    UNUSED_PARAM(isGrammarCheckingEnabled);
+#endif
 }
 
 void TextChecker::continuousSpellCheckingEnabledStateChanged(bool enabled)
 {
-    textCheckerState.isContinuousSpellCheckingEnabled = enabled;
+#if ENABLE(SPELLCHECK)
+    checkerState().isContinuousSpellCheckingEnabled = enabled;
+#else
+    UNUSED_PARAM(enabled);
+#endif
 }
 
 void TextChecker::grammarCheckingEnabledStateChanged(bool enabled)
 {
-    textCheckerState.isGrammarCheckingEnabled = enabled;
+#if ENABLE(SPELLCHECK)
+    checkerState().isGrammarCheckingEnabled = enabled;
+#else
+    UNUSED_PARAM(enabled);
+#endif
 }
 
-int64_t TextChecker::uniqueSpellDocumentTag(WebPageProxy* page)
+int64_t TextChecker::uniqueSpellDocumentTag(WebPageProxy*)
 {
-    return WebTextChecker::shared()->client().uniqueSpellDocumentTag(page);
+    return 0;
 }
 
-void TextChecker::closeSpellDocumentWithTag(int64_t tag)
+void TextChecker::closeSpellDocumentWithTag(int64_t /* tag */)
 {
-    WebTextChecker::shared()->client().closeSpellDocumentWithTag(tag);
 }
 
-void TextChecker::checkSpellingOfString(int64_t spellDocumentTag, const UChar* text, uint32_t length, int32_t& misspellingLocation, int32_t& misspellingLength)
+void TextChecker::checkSpellingOfString(int64_t /* spellDocumentTag */, StringView text, int32_t& misspellingLocation, int32_t& misspellingLength)
 {
-    WebTextChecker::shared()->client().checkSpellingOfString(spellDocumentTag, String(text, length), misspellingLocation, misspellingLength);
+#if ENABLE(SPELLCHECK)
+    misspellingLocation = -1;
+    misspellingLength = 0;
+    enchantTextChecker().checkSpellingOfString(text.toStringWithoutCopying(), misspellingLocation, misspellingLength);
+#else
+    UNUSED_PARAM(text);
+    UNUSED_PARAM(misspellingLocation);
+    UNUSED_PARAM(misspellingLength);
+#endif
 }
 
-void TextChecker::checkGrammarOfString(int64_t spellDocumentTag, const UChar* text, uint32_t length, Vector<WebCore::GrammarDetail>& grammarDetails, int32_t& badGrammarLocation, int32_t& badGrammarLength)
+void TextChecker::checkGrammarOfString(int64_t /* spellDocumentTag */, StringView /* text */, Vector<WebCore::GrammarDetail>& /* grammarDetails */, int32_t& /* badGrammarLocation */, int32_t& /* badGrammarLength */)
 {
-    WebTextChecker::shared()->client().checkGrammarOfString(spellDocumentTag, String(text, length), grammarDetails, badGrammarLocation, badGrammarLength);
 }
 
 bool TextChecker::spellingUIIsShowing()
 {
-    return WebTextChecker::shared()->client().spellingUIIsShowing();
+    return false;
 }
 
 void TextChecker::toggleSpellingUIIsShowing()
 {
-    WebTextChecker::shared()->client().toggleSpellingUIIsShowing();
 }
 
-void TextChecker::updateSpellingUIWithMisspelledWord(int64_t spellDocumentTag, const String& misspelledWord)
+void TextChecker::updateSpellingUIWithMisspelledWord(int64_t /* spellDocumentTag */, const String& /* misspelledWord */)
+{
+}
+
+void TextChecker::updateSpellingUIWithGrammarString(int64_t /* spellDocumentTag */, const String& /* badGrammarPhrase */, const GrammarDetail& /* grammarDetail */)
 {
-    WebTextChecker::shared()->client().updateSpellingUIWithMisspelledWord(spellDocumentTag, misspelledWord);
 }
 
-void TextChecker::updateSpellingUIWithGrammarString(int64_t spellDocumentTag, const String& badGrammarPhrase, const GrammarDetail& grammarDetail)
+void TextChecker::getGuessesForWord(int64_t /* spellDocumentTag */, const String& word, const String& /* context */, int32_t /* insertionPoint */, Vector<String>& guesses, bool)
 {
-    WebTextChecker::shared()->client().updateSpellingUIWithGrammarString(spellDocumentTag, badGrammarPhrase, grammarDetail);
+#if ENABLE(SPELLCHECK)
+    guesses = enchantTextChecker().getGuessesForWord(word);
+#else
+    UNUSED_PARAM(word);
+    UNUSED_PARAM(guesses);
+#endif
 }
 
-void TextChecker::getGuessesForWord(int64_t spellDocumentTag, const String& word, const String& context, Vector<String>& guesses)
+void TextChecker::learnWord(int64_t /* spellDocumentTag */, const String& word)
 {
-    WebTextChecker::shared()->client().guessesForWord(spellDocumentTag, word, guesses);
+#if ENABLE(SPELLCHECK)
+    enchantTextChecker().learnWord(word);
+#else
+    UNUSED_PARAM(word);
+#endif
 }
 
-void TextChecker::learnWord(int64_t spellDocumentTag, const String& word)
+void TextChecker::ignoreWord(int64_t /* spellDocumentTag */, const String& word)
 {
-    WebTextChecker::shared()->client().learnWord(spellDocumentTag, word);
+#if ENABLE(SPELLCHECK)
+    enchantTextChecker().ignoreWord(word);
+#else
+    UNUSED_PARAM(word);
+#endif
+}
+
+void TextChecker::requestCheckingOfString(PassRefPtr<TextCheckerCompletion> completion, int32_t insertionPoint)
+{
+#if ENABLE(SPELLCHECK)
+    if (!completion)
+        return;
+
+    TextCheckingRequestData request = completion->textCheckingRequestData();
+    ASSERT(request.sequence() != unrequestedTextCheckingSequence);
+    ASSERT(request.mask() != TextCheckingTypeNone);
+
+    completion->didFinishCheckingText(checkTextOfParagraph(completion->spellDocumentTag(), request.text(), insertionPoint, request.mask(), false));
+#else
+    UNUSED_PARAM(completion);
+#endif
+}
+
+#if USE(UNIFIED_TEXT_CHECKING) && ENABLE(SPELLCHECK)
+static unsigned nextWordOffset(StringView text, unsigned currentOffset)
+{
+    // FIXME: avoid creating textIterator object here, it could be passed as a parameter.
+    //        ubrk_isBoundary() leaves the iterator pointing to the first boundary position at
+    //        or after "offset" (ubrk_isBoundary side effect).
+    //        For many word separators, the method doesn't properly determine the boundaries
+    //        without resetting the iterator.
+    UBreakIterator* textIterator = wordBreakIterator(text);
+    if (!textIterator)
+        return currentOffset;
+
+    unsigned wordOffset = currentOffset;
+    while (wordOffset < text.length() && ubrk_isBoundary(textIterator, wordOffset))
+        ++wordOffset;
+
+    // Do not treat the word's boundary as a separator.
+    if (!currentOffset && wordOffset == 1)
+        return currentOffset;
+
+    // Omit multiple separators.
+    if ((wordOffset - currentOffset) > 1)
+        --wordOffset;
+
+    return wordOffset;
+}
+#endif
+
+#if USE(UNIFIED_TEXT_CHECKING)
+Vector<TextCheckingResult> TextChecker::checkTextOfParagraph(int64_t spellDocumentTag, StringView text, int32_t insertionPoint, uint64_t checkingTypes, bool)
+{
+    UNUSED_PARAM(insertionPoint);
+#if ENABLE(SPELLCHECK)
+    if (!(checkingTypes & TextCheckingTypeSpelling))
+        return Vector<TextCheckingResult>();
+
+    UBreakIterator* textIterator = wordBreakIterator(text);
+    if (!textIterator)
+        return Vector<TextCheckingResult>();
+
+    // Omit the word separators at the beginning/end of the text to don't unnecessarily
+    // involve the client to check spelling for them.
+    unsigned offset = nextWordOffset(text, 0);
+    unsigned lengthStrip = text.length();
+    while (lengthStrip > 0 && ubrk_isBoundary(textIterator, lengthStrip - 1))
+        --lengthStrip;
+
+    Vector<TextCheckingResult> paragraphCheckingResult;
+    while (offset < lengthStrip) {
+        int32_t misspellingLocation = -1;
+        int32_t misspellingLength = 0;
+        checkSpellingOfString(spellDocumentTag, text.substring(offset, lengthStrip - offset), misspellingLocation, misspellingLength);
+        if (!misspellingLength)
+            break;
+
+        TextCheckingResult misspellingResult;
+        misspellingResult.type = TextCheckingTypeSpelling;
+        misspellingResult.location = offset + misspellingLocation;
+        misspellingResult.length = misspellingLength;
+        paragraphCheckingResult.append(misspellingResult);
+        offset += misspellingLocation + misspellingLength;
+        // Generally, we end up checking at the word separator, move to the adjacent word.
+        offset = nextWordOffset(text.substring(0, lengthStrip), offset);
+    }
+    return paragraphCheckingResult;
+#else
+    UNUSED_PARAM(spellDocumentTag);
+    UNUSED_PARAM(text);
+    UNUSED_PARAM(checkingTypes);
+    return Vector<TextCheckingResult>();
+#endif // ENABLE(SPELLCHECK)
 }
+#endif // USE(UNIFIED_TEXT_CHECKING)
 
-void TextChecker::ignoreWord(int64_t spellDocumentTag, const String& word)
+void TextChecker::setSpellCheckingLanguages(const Vector<String>& languages)
 {
-    WebTextChecker::shared()->client().ignoreWord(spellDocumentTag, word);
+#if ENABLE(SPELLCHECK)
+    enchantTextChecker().updateSpellCheckingLanguages(languages);
+#else
+    UNUSED_PARAM(languages);
+#endif
 }
 
-void TextChecker::requestCheckingOfString(PassRefPtr<TextCheckerCompletion>)
+Vector<String> TextChecker::loadedSpellCheckingLanguages()
 {
-    notImplemented();
+#if ENABLE(SPELLCHECK)
+    return enchantTextChecker().loadedSpellCheckingLanguages();
+#else
+    return Vector<String>();
+#endif
 }
 
 } // namespace WebKit