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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_STATUS_CAPS_LOCK_MENU_BUTTON_H_
#define CHROME_BROWSER_CHROMEOS_STATUS_CAPS_LOCK_MENU_BUTTON_H_
#pragma once
#include <string>
#include "base/compiler_specific.h"
#include "base/timer.h"
#include "chrome/browser/chromeos/status/status_area_button.h"
#include "chrome/browser/chromeos/system_key_event_listener.h"
#include "chrome/browser/prefs/pref_member.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "ui/views/controls/button/menu_button_listener.h"
#include "ui/views/controls/menu/menu_delegate.h"
class Bubble;
namespace views {
class MenuRunner;
}
namespace chromeos {
class StatusAreaBubbleContentView;
class StatusAreaBubbleController;
// A class for the button in the status area which alerts the user when caps
// lock is active.
class CapsLockMenuButton : public content::NotificationObserver,
public StatusAreaButton,
public views::MenuDelegate,
public views::MenuButtonListener,
public SystemKeyEventListener::CapsLockObserver {
public:
explicit CapsLockMenuButton(StatusAreaButton::Delegate* delegate);
virtual ~CapsLockMenuButton();
// views::View implementation.
virtual void OnLocaleChanged() OVERRIDE;
// views::MenuDelegate implementation.
virtual string16 GetLabel(int id) const OVERRIDE;
// views::MenuButtonListener implementation.
virtual void OnMenuButtonClicked(views::View* source,
const gfx::Point& point) OVERRIDE;
// SystemKeyEventListener::CapsLockObserver implementation
virtual void OnCapsLockChange(bool enabled) OVERRIDE;
// content::NotificationObserver implementation
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
private:
// Returns true if the Search key is assigned to Caps Lock.
bool HasCapsLock() const;
bool IsMenuShown() const;
void HideMenu();
bool IsBubbleShown() const;
void MaybeShowBubble();
void CreateAndShowBubble();
void HideBubble();
// Updates the accessible name.
void UpdateAccessibleName();
// Gets the text for the drop-down menu and bubble.
string16 GetText() const;
// Updates the button from the current state.
void UpdateUIFromCurrentCapsLock(bool enabled);
// Initializes |remap_search_key_to_|.
void InitializePrefMember();
bool initialized_prefs_;
content::NotificationRegistrar registrar_;
IntegerPrefMember remap_search_key_to_;
// The currently showing status view. NULL if menu is not being displayed.
StatusAreaBubbleContentView* status_;
// If non-null the menu is showing.
scoped_ptr<views::MenuRunner> menu_runner_;
// The currently showing bubble controller.
// NULL if bubble is not being displayed.
scoped_ptr<StatusAreaBubbleController> bubble_controller_;
// If true, |bubble_| is shown when both shift keys are pressed.
bool should_show_bubble_;
// # of times |bubble_| is shown.
size_t bubble_count_;
// TODO(yusukes): Save should_show_bubble_ and bubble_count_ in Preferences.
DISALLOW_COPY_AND_ASSIGN(CapsLockMenuButton);
};
} // namespace chromeos
#endif // CHROME_BROWSER_CHROMEOS_STATUS_CAPS_LOCK_MENU_BUTTON_H_
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