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// Copyright (c) 2011 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.
//
// This file implements the input method candidate window used on Chrome OS.
#ifndef CHROME_BROWSER_CHROMEOS_INPUT_METHOD_CANDIDATE_WINDOW_H_
#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_CANDIDATE_WINDOW_H_
#pragma once
#include "base/basictypes.h"
namespace chromeos {
namespace input_method {
// CandidateWindowController is used for controlling the input method
// candidate window. Once the initialization is done, the controller
// starts monitoring signals sent from the the background input method
// daemon, and shows and hides the candidate window as neeeded. Upon
// deletion of the object, monitoring stops and the view used for
// rendering the candidate view is deleted.
class CandidateWindowController {
public:
class Observer {
public:
virtual ~Observer() {}
virtual void CandidateWindowOpened() = 0;
virtual void CandidateWindowClosed() = 0;
};
CandidateWindowController();
virtual ~CandidateWindowController();
// Initializes the candidate window. Returns true on success.
bool Init();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
private:
class Impl;
Impl* impl_;
DISALLOW_COPY_AND_ASSIGN(CandidateWindowController);
};
} // namespace input_method
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_CANDIDATE_WINDOW_H_
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