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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_BROWSER_SPELLCHECKER_SPELLCHECK_CUSTOM_DICTIONARY_H_
#define CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_CUSTOM_DICTIONARY_H_
#include <string>
#include <vector>
#include "base/file_path.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "chrome/browser/spellchecker/spellcheck_dictionary.h"
#include "chrome/common/spellcheck_common.h"
// Defines a custom dictionary which users can add their own words to.
class SpellcheckCustomDictionary : public SpellcheckDictionary {
public:
class Observer {
public:
virtual void OnCustomDictionaryLoaded() = 0;
virtual void OnCustomDictionaryWordAdded(const std::string& word) = 0;
virtual void OnCustomDictionaryWordRemoved(const std::string& word) = 0;
};
explicit SpellcheckCustomDictionary(Profile* profile);
virtual ~SpellcheckCustomDictionary();
// Overridden from SpellcheckDictionary:
virtual void Load() OVERRIDE;
const chrome::spellcheck_common::WordList& GetWords() const;
void LoadDictionaryIntoCustomWordList(
chrome::spellcheck_common::WordList* custom_words);
// Moves the words from the |custom_words| argument into its own private
// member variable. Does not delete the memory at |custom_words|.
void SetCustomWordList(chrome::spellcheck_common::WordList* custom_words);
// Adds the given word to the custom words list and inform renderer of the
// update. Returns false for duplicate words.
bool AddWord(const std::string& word);
// Returns false for duplicate words.
bool CustomWordAddedLocally(const std::string& word);
void WriteWordToCustomDictionary(const std::string& word);
// Removes the given word from the custom words list and inform renderer of
// the update. Returns false for words that are not in the dictionary.
bool RemoveWord(const std::string& word);
// Returns false for words that are not in the dictionary.
bool CustomWordRemovedLocally(const std::string& word);
void EraseWordFromCustomDictionary(const std::string& word);
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
private:
// Returns a newly allocated list of words read from custom dictionary file.
// The caller owns this new list.
chrome::spellcheck_common::WordList* LoadDictionary();
// The reply point for PostTaskAndReplyWithResult. Called when LoadDictionary
// is finished reading words from custom dictionary file. Moves the strings
// from the |custom_words| argument into the private member variable |words_|
// and deletes the memory at |custom_words|.
void SetCustomWordListAndDelete(
chrome::spellcheck_common::WordList* custom_words);
// In-memory cache of the custom words file.
chrome::spellcheck_common::WordList words_;
// A path for custom dictionary per profile.
FilePath custom_dictionary_path_;
base::WeakPtrFactory<SpellcheckCustomDictionary> weak_ptr_factory_;
std::vector<Observer*> observers_;
DISALLOW_COPY_AND_ASSIGN(SpellcheckCustomDictionary);
};
#endif // CHROME_BROWSER_SPELLCHECKER_SPELLCHECK_CUSTOM_DICTIONARY_H_
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