// Copyright 2020 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_PUBLIC_CPP_KEYBOARD_ARC_ARC_INPUT_METHOD_BOUNDS_TRACKER_H_
#define ASH_PUBLIC_CPP_KEYBOARD_ARC_ARC_INPUT_METHOD_BOUNDS_TRACKER_H_
#include "ash/public/cpp/ash_public_export.h"
#include "base/observer_list.h"
#include "ui/gfx/geometry/rect.h"
namespace ash {
// This interface keeps tracking the bounds change events of ARC IMEs
// and notifies registered observers of bounds changes.
class ASH_PUBLIC_EXPORT ArcInputMethodBoundsTracker {
public:
class Observer : public base::CheckedObserver {
public:
~Observer() override = default;
virtual void OnArcInputMethodBoundsChanged(const gfx::Rect& bounds) = 0;
};
// Gets the global ArcInputMethodBoundsTracker instance.
static ArcInputMethodBoundsTracker* Get();
ArcInputMethodBoundsTracker();
virtual ~ArcInputMethodBoundsTracker();
void AddObserver(Observer* observer);
void RemoveObserver(Observer* observer);
void NotifyArcInputMethodBoundsChanged(const gfx::Rect& bounds);
private:
base::ObserverList<Observer> observers_;
};
} // namespace ash
#endif // ASH_PUBLIC_CPP_KEYBOARD_ARC_ARC_INPUT_METHOD_BOUNDS_TRACKER_H_