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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.
#ifndef ASH_KEYBOARD_VIRTUAL_KEYBOARD_CONTROLLER_H_
#define ASH_KEYBOARD_VIRTUAL_KEYBOARD_CONTROLLER_H_
#include <stdint.h>
#include "ash/ash_export.h"
#include "ash/bluetooth_devices_observer.h"
#include "ash/session/session_observer.h"
#include "ash/wm/tablet_mode/tablet_mode_observer.h"
#include "base/macros.h"
#include "ui/base/ime/chromeos/public/interfaces/ime_keyset.mojom.h"
#include "ui/events/devices/input_device_event_observer.h"
#include "ui/keyboard/keyboard_controller_observer.h"
#include "ui/keyboard/keyboard_layout_delegate.h"
namespace ash {
// This class observes input device changes for the virtual keyboard.
// TODO(https://crbug.com/849995): Should rename this to not confuse it with
// KeyboardController. |ForceShowKeyboardWithKeyset| also does not really
// belong here based on the current class description.
class ASH_EXPORT VirtualKeyboardController
: public TabletModeObserver,
public ui::InputDeviceEventObserver,
public keyboard::KeyboardLayoutDelegate,
public keyboard::KeyboardControllerObserver,
public SessionObserver {
public:
VirtualKeyboardController();
~VirtualKeyboardController() override;
// Force enable the keyboard and show it with the given keyset: none, emoji,
// handwriting or voice. Works even in laptop mode.
void ForceShowKeyboardWithKeyset(
chromeos::input_method::mojom::ImeKeyset keyset);
// TabletModeObserver:
void OnTabletModeEventsBlockingChanged() override;
// ui::InputDeviceObserver:
void OnTouchscreenDeviceConfigurationChanged() override;
void OnKeyboardDeviceConfigurationChanged() override;
// Toggles whether the presence of an external keyboard should be ignored
// when determining whether or not to show the on-screen keyboard.
void ToggleIgnoreExternalKeyboard();
// keyboard::KeyboardLayoutDelegate:
void MoveKeyboardToDisplay(const display::Display& display) override;
void MoveKeyboardToTouchableDisplay() override;
// keyboard::KeyboardControllerObserver:
void OnKeyboardEnabledChanged(bool is_enabled) override;
void OnKeyboardHidden(bool is_temporary_hide) override;
// SessionObserver:
void OnActiveUserSessionChanged(const AccountId& account_id) override;
private:
// Updates the list of active input devices.
void UpdateDevices();
// Updates the keyboard state.
void UpdateKeyboardEnabled();
// Creates the keyboard if |enabled|, else destroys it.
void SetKeyboardEnabled(bool enabled);
// Force enable the keyboard and show it, even in laptop mode.
void ForceShowKeyboard();
// Callback function of |bluetooth_devices_observer_|. Called when the
// bluetooth adapter or |device| changes.
void OnBluetoothAdapterOrDeviceChanged(device::BluetoothDevice* device);
// True if an external keyboard is connected.
bool has_external_keyboard_;
// True if an internal keyboard is connected.
bool has_internal_keyboard_;
// True if a touchscreen is connected.
bool has_touchscreen_;
// True if the presence of an external keyboard should be ignored.
bool ignore_external_keyboard_;
// Observer to observe the bluetooth devices.
std::unique_ptr<BluetoothDevicesObserver> bluetooth_devices_observer_;
DISALLOW_COPY_AND_ASSIGN(VirtualKeyboardController);
};
} // namespace ash
#endif // ASH_KEYBOARD_VIRTUAL_KEYBOARD_CONTROLLER_H_