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// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_SPELLCHECK_RENDERER_HUNSPELL_ENGINE_H_
#define COMPONENTS_SPELLCHECK_RENDERER_HUNSPELL_ENGINE_H_
#include <memory>
#include <string>
#include <vector>
#include "base/memory/raw_ptr.h"
#include "base/strings/utf_string_conversions.h"
#include "components/spellcheck/common/spellcheck_common.h"
#include "components/spellcheck/renderer/spelling_engine.h"
class Hunspell;
namespace base {
class MemoryMappedFile;
}
class HunspellEngine : public SpellingEngine {
public:
explicit HunspellEngine(
service_manager::LocalInterfaceProvider* embedder_provider);
~HunspellEngine() override;
void Init(base::File file) override;
bool InitializeIfNeeded() override;
bool IsEnabled() override;
bool CheckSpelling(const std::u16string& word_to_check,
spellcheck::mojom::SpellCheckHost& host) override;
void FillSuggestionList(
const std::u16string& wrong_word,
spellcheck::mojom::SpellCheckHost& host,
std::vector<std::u16string>* optional_suggestions) override;
private:
// Initializes the Hunspell dictionary, or does nothing if |hunspell_| is
// non-null. This blocks.
void InitializeHunspell();
// We memory-map the BDict file.
std::unique_ptr<base::MemoryMappedFile> bdict_file_;
// The hunspell dictionary in use.
std::unique_ptr<Hunspell> hunspell_;
base::File file_;
// This flag is true if hunspell is enabled.
bool hunspell_enabled_;
// This flag is true if we have been initialized.
// 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 flag is true if we have requested dictionary.
bool dictionary_requested_;
raw_ptr<service_manager::LocalInterfaceProvider> embedder_provider_;
};
#endif // COMPONENTS_SPELLCHECK_RENDERER_HUNSPELL_ENGINE_H_
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