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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_UI_WEBUI_OPTIONS_LANGUAGE_OPTIONS_HANDLER_COMMON_H_
#define CHROME_BROWSER_UI_WEBUI_OPTIONS_LANGUAGE_OPTIONS_HANDLER_COMMON_H_
#include "base/memory/weak_ptr.h"
#include "chrome/browser/spellchecker/spellcheck_hunspell_dictionary.h"
#include "chrome/browser/ui/webui/options/options_ui.h"
namespace base {
class DictionaryValue;
class ListValue;
}
namespace options {
// The base class for language options page UI handlers. This class has code
// common to the Chrome OS and non-Chrome OS implementation of the handler.
class LanguageOptionsHandlerCommon
: public OptionsPageUIHandler,
public SpellcheckHunspellDictionary::Observer {
public:
LanguageOptionsHandlerCommon();
virtual ~LanguageOptionsHandlerCommon();
// OptionsPageUIHandler implementation.
virtual void GetLocalizedValues(
base::DictionaryValue* localized_strings) OVERRIDE;
virtual void Uninitialize() OVERRIDE;
// DOMMessageHandler implementation.
virtual void RegisterMessages() OVERRIDE;
// SpellcheckHunspellDictionary::Observer implementation.
virtual void OnHunspellDictionaryInitialized() OVERRIDE;
virtual void OnHunspellDictionaryDownloadBegin() OVERRIDE;
virtual void OnHunspellDictionaryDownloadSuccess() OVERRIDE;
virtual void OnHunspellDictionaryDownloadFailure() OVERRIDE;
// The following static methods are public for ease of testing.
// Gets the set of language codes that can be used as UI language.
// The return value will look like:
// {'en-US': true, 'fi': true, 'fr': true, ...}
//
// Note that true in values does not mean anything. We just use the
// dictionary as a set.
static base::DictionaryValue* GetUILanguageCodeSet();
// Gets the set of language codes that can be used for spellchecking.
// The return value will look like:
// {'en-US': true, 'fi': true, 'fr': true, ...}
//
// Note that true in values does not mean anything. We just use the
// dictionary as a set.
static base::DictionaryValue* GetSpellCheckLanguageCodeSet();
private:
// Returns the name of the product (ex. "Chrome" or "Chrome OS").
virtual string16 GetProductName() = 0;
// Sets the application locale.
virtual void SetApplicationLocale(const std::string& language_code) = 0;
// Called when the language options is opened.
void LanguageOptionsOpenCallback(const base::ListValue* args);
// Called when the UI language is changed.
// |args| will contain the language code as string (ex. "fr").
void UiLanguageChangeCallback(const base::ListValue* args);
// Called when the spell check language is changed.
// |args| will contain the language code as string (ex. "fr").
void SpellCheckLanguageChangeCallback(const base::ListValue* args);
// Called when the user clicks "Retry" button for a spellcheck dictionary that
// has failed to download.
void RetrySpellcheckDictionaryDownload(const base::ListValue* args);
// Called when the user saves the language list preferences.
void UpdateLanguageListCallback(const base::ListValue* args);
// Updates the hunspell dictionary that is used for spellchecking.
void RefreshHunspellDictionary();
// Returns the hunspell dictionary that is used for spellchecking. Never null.
base::WeakPtr<SpellcheckHunspellDictionary>& GetHunspellDictionary();
// The hunspell dictionary that is used for spellchecking. Might be null.
base::WeakPtr<SpellcheckHunspellDictionary> hunspell_dictionary_;
DISALLOW_COPY_AND_ASSIGN(LanguageOptionsHandlerCommon);
};
} // namespace options
#endif // CHROME_BROWSER_UI_WEBUI_OPTIONS_LANGUAGE_OPTIONS_HANDLER_COMMON_H_
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