chrome/renderer/spellchecker/custom_dictionary_engine.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/renderer/spellchecker/custom_dictionary_engine.h"
   6
   7 #include "base/logging.h"
   8 #include "base/strings/utf_string_conversions.h"
   9
  10 CustomDictionaryEngine::CustomDictionaryEngine() {
  11 }
  12
  13 CustomDictionaryEngine::~CustomDictionaryEngine() {
  14 }
  15
  16 void CustomDictionaryEngine::Init(const std::set<std::string>& custom_words) {
  17   // SpellingMenuOberver calls UTF16ToUTF8(word) to convert words for storage,
  18   // synchronization, and use in the custom dictionary engine. Since
  19   // (UTF8ToUTF16(UTF16ToUTF8(word)) == word) holds, the engine does not need to
  20   // normalize the strings.
  21   for (std::set<std::string>::const_iterator it = custom_words.begin();
  22        it != custom_words.end();
  23        ++it) {
  24     dictionary_.insert(base::UTF8ToUTF16(*it));
  25   }
  26 }
  27
  28 void CustomDictionaryEngine::OnCustomDictionaryChanged(
  29     const std::vector<std::string>& words_added,
  30     const std::vector<std::string>& words_removed) {
  31   for (std::vector<std::string>::const_iterator it = words_added.begin();
  32        it != words_added.end();
  33        ++it) {
  34     dictionary_.insert(base::UTF8ToUTF16(*it));
  35   }
  36   for (std::vector<std::string>::const_iterator it = words_removed.begin();
  37        it != words_removed.end();
  38        ++it) {
  39     dictionary_.erase(base::UTF8ToUTF16(*it));
  40   }
  41 }
  42
  43 bool CustomDictionaryEngine::SpellCheckWord(
  44     const base::string16& text,
  45     int misspelling_start,
  46     int misspelling_len) {
  47   // The text to be checked is empty on OSX(async) right now.
  48   // TODO(groby): Fix as part of async hook-up. (http://crbug.com/178241)
  49   return
  50       misspelling_start >= 0 &&
  51       misspelling_len > 0 &&
  52       size_t(misspelling_start + misspelling_len) <= text.length() &&
  53       dictionary_.count(text.substr(misspelling_start, misspelling_len)) > 0;
  54 }