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 COMPONENTS_SPELLCHECK_RENDERER_CUSTOM_DICTIONARY_ENGINE_H_
6 #define COMPONENTS_SPELLCHECK_RENDERER_CUSTOM_DICTIONARY_ENGINE_H_
7 
8 #include <set>
9 #include <string>
10 
11 #include "base/macros.h"
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                       size_t misspelling_start,
30                       size_t misspelling_len);
31 
32   // Update custom dictionary words.
33   void OnCustomDictionaryChanged(const std::set<std::string>& words_added,
34                                  const std::set<std::string>& words_removed);
35 
36  private:
37   // Correctly spelled words.
38   std::set<base::string16> dictionary_;
39 
40   DISALLOW_COPY_AND_ASSIGN(CustomDictionaryEngine);
41 };
42 
43 #endif  // COMPONENTS_SPELLCHECK_RENDERER_CUSTOM_DICTIONARY_ENGINE_H_
44