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// Copyright 2018 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef ASH_SYSTEM_MODEL_VIRTUAL_KEYBOARD_MODEL_H_
#define ASH_SYSTEM_MODEL_VIRTUAL_KEYBOARD_MODEL_H_
#include "ash/ash_export.h"
#include "ash/public/cpp/keyboard/arc/arc_input_method_bounds_tracker.h"
#include "ash/public/cpp/keyboard/keyboard_controller_observer.h"
#include "base/observer_list.h"
namespace ash {
// Model to store virtual keyboard visibility state.
class ASH_EXPORT VirtualKeyboardModel
: public ArcInputMethodBoundsTracker::Observer,
public KeyboardControllerObserver {
public:
class Observer {
public:
virtual ~Observer() {}
virtual void OnVirtualKeyboardVisibilityChanged() = 0;
};
VirtualKeyboardModel();
VirtualKeyboardModel(const VirtualKeyboardModel&) = delete;
VirtualKeyboardModel& operator=(const VirtualKeyboardModel&) = delete;
~VirtualKeyboardModel() override;
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
// Start/stop observing ArcInputMethodBoundsTracker.
void SetInputMethodBoundsTrackerObserver(
ArcInputMethodBoundsTracker* input_method_bounds_tracker);
void RemoveInputMethodBoundsTrackerObserver(
ArcInputMethodBoundsTracker* input_method_bounds_tracker);
// ArcInputMethodBoundsTracker::Observer:
void OnArcInputMethodBoundsChanged(const gfx::Rect& bounds) override;
// KeyboardControllerObserver:
void OnKeyboardEnabledChanged(bool is_enabled) override;
bool arc_keyboard_visible() const { return arc_keyboard_visible_; }
const gfx::Rect& arc_keyboard_bounds() const { return arc_keyboard_bounds_; }
private:
// Sets `arc_keyboard_visible_` depending on last reported ARC input method
// bounds and the keyboard controller state. Notifies observes of the
// visibility change if the `arc_keyboard_visible_` value changed..
void UpdateArcKeyboardVisibility();
// Whether ARC IME keyboard is currently visible..
bool arc_keyboard_visible_ = false;
gfx::Rect arc_keyboard_bounds_;
base::ObserverList<Observer>::Unchecked observers_;
};
} // namespace ash
#endif // ASH_SYSTEM_MODEL_VIRTUAL_KEYBOARD_MODEL_H_
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