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// Copyright 2014 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.
#include "base/observer_list.h"
#include "ui/chromeos/ime/input_method_menu_item.h"
#include "ui/chromeos/ui_chromeos_export.h"
#ifndef UI_CHROMEOS_IME_INPUT_METHOD_MENU_MANAGER_H_
#define UI_CHROMEOS_IME_INPUT_METHOD_MENU_MANAGER_H_
template<typename Type> struct DefaultSingletonTraits;
namespace ui {
namespace ime {
class UI_CHROMEOS_EXPORT InputMethodMenuManager {
public:
class Observer {
public:
virtual ~Observer() {}
// Called when the list of menu items is changed.
virtual void InputMethodMenuItemChanged(
InputMethodMenuManager* manager) = 0;
};
~InputMethodMenuManager();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Obtains the singleton instance.
static InputMethodMenuManager* GetInstance();
// Sets the list of input method menu items. The list could be empty().
void SetCurrentInputMethodMenuItemList(
const InputMethodMenuItemList& menu_list);
// Gets the list of input method menu items. The list could be empty().
InputMethodMenuItemList GetCurrentInputMethodMenuItemList() const;
// True if the key exists in the menu_list_.
bool HasInputMethodMenuItemForKey(const std::string& key) const;
private:
InputMethodMenuManager();
// For Singleton to be able to construct an instance.
friend struct DefaultSingletonTraits<InputMethodMenuManager>;
// Menu item list of the input method. This is set by extension IMEs.
InputMethodMenuItemList menu_list_;
// Observers who will be notified when menu changes.
ObserverList<Observer> observers_;
DISALLOW_COPY_AND_ASSIGN(InputMethodMenuManager);
};
} // namespace ime
} // namespace ui
#endif // UI_CHROMEOS_IME_INPUT_METHOD_MENU_MANAGER_H_
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