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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_RENDERER_SPELLCHECKER_HUNSPELL_ENGINE_H_
#define CHROME_RENDERER_SPELLCHECKER_HUNSPELL_ENGINE_H_
#include "base/file_util.h"
#include "base/memory/scoped_ptr.h"
#include "base/string16.h"
#include "base/utf_string_conversions.h"
#include "chrome/renderer/spellchecker/spelling_engine.h"
#include <string>
#include <vector>
class Hunspell;
class HunspellEngine : public SpellingEngine {
public:
HunspellEngine();
virtual ~HunspellEngine();
void Init(base::PlatformFile file,
const std::vector<std::string>& custom_words);
virtual bool InitializeIfNeeded() OVERRIDE;
virtual bool IsEnabled() OVERRIDE;
virtual bool CheckSpelling(const string16& word_to_check, int tag) OVERRIDE;
virtual void FillSuggestionList(const string16& wrong_word,
std::vector<string16>* optional_suggestions) OVERRIDE;
virtual void OnWordAdded(const std::string& word) OVERRIDE;
private:
// Initializes the Hunspell dictionary, or does nothing if |hunspell_| is
// non-null. This blocks.
void InitializeHunspell();
// Add the given custom word to |hunspell_|.
void AddWordToHunspell(const std::string& word);
// We memory-map the BDict file.
scoped_ptr<file_util::MemoryMappedFile> bdict_file_;
// The hunspell dictionary in use.
scoped_ptr<Hunspell> hunspell_;
std::vector<std::string> custom_words_;
base::PlatformFile file_;
// This flags is true if we have been intialized.
// The value indicates whether we should request a
// dictionary from the browser when the render view asks us to check the
// spelling of a word.
bool initialized_;
// This flags is true if we have requested dictionary.
bool dictionary_requested_;
};
#endif // CHROME_RENDERER_SPELLCHECKER_HUNSPELL_ENGINE_H_
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