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      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 #ifndef CHROME_RENDERER_SPELLCHECKER_CUSTOM_DICTIONARY_ENGINE_H_
      6 #define CHROME_RENDERER_SPELLCHECKER_CUSTOM_DICTIONARY_ENGINE_H_
      7 
      8 #include <set>
      9 #include <string>
     10 #include <vector>
     11 
     12 #include "base/strings/string16.h"
     13 
     14 // Custom spellcheck dictionary. Words in this dictionary are always correctly
     15 // spelled. Words that are not in this dictionary may or may not be correctly
     16 // spelled.
     17 class CustomDictionaryEngine {
     18  public:
     19   CustomDictionaryEngine();
     20   ~CustomDictionaryEngine();
     21 
     22   // Initialize the custom dictionary engine.
     23   void Init(const std::set<std::string>& words);
     24 
     25   // Spellcheck |text|. Assumes that another spelling engine has set
     26   // |misspelling_start| and |misspelling_len| to indicate a misspelling.
     27   // Returns true if there are no misspellings, otherwise returns false.
     28   bool SpellCheckWord(const base::string16& text,
     29                       int misspelling_start,
     30                       int misspelling_len);
     31 
     32   // Update custom dictionary words.
     33   void OnCustomDictionaryChanged(
     34       const std::vector<std::string>& words_added,
     35       const std::vector<std::string>& words_removed);
     36 
     37  private:
     38   // Correctly spelled words.
     39   std::set<base::string16> dictionary_;
     40 
     41   DISALLOW_COPY_AND_ASSIGN(CustomDictionaryEngine);
     42 };
     43 
     44 #endif  // CHROME_RENDERER_SPELLCHECKER_CUSTOM_DICTIONARY_ENGINE_H_
     45