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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_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_
#define CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "chrome/browser/chromeos/input_method/input_method_manager.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "content/public/browser/notification_types.h"
namespace chromeos {
namespace input_method {
class InputMethodDelegate;
// A class which monitors a notification from the browser to keep track of the
// browser state (not logged in, logged in, etc.) and notify the current state
// to the input method manager. The class also updates the appropriate Chrome
// prefs via the InputMethodDelegate, depending on the current browser state.
class BrowserStateMonitor : public content::NotificationObserver,
public InputMethodManager::Observer {
public:
BrowserStateMonitor(InputMethodManager* manager,
InputMethodDelegate* delegate);
virtual ~BrowserStateMonitor();
InputMethodManager::State state() const { return state_; }
protected:
// InputMethodManager::Observer overrides:
virtual void InputMethodChanged(InputMethodManager* manager,
bool show_message) OVERRIDE;
virtual void InputMethodPropertyChanged(InputMethodManager* manager) OVERRIDE;
// content::NotificationObserver overrides:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
private:
void SetState(InputMethodManager::State new_state);
InputMethodManager* manager_;
InputMethodDelegate* delegate_;
InputMethodManager::State state_;
// This is used to register this object to some browser notifications.
content::NotificationRegistrar notification_registrar_;
DISALLOW_COPY_AND_ASSIGN(BrowserStateMonitor);
};
} // namespace input_method
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_INPUT_METHOD_BROWSER_STATE_MONITOR_H_
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