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// 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_SHELF_SHELF_COMPONENT_H_
#define ASH_SHELF_SHELF_COMPONENT_H_
#include "ash/ash_export.h"
#include "ui/gfx/geometry/rect.h"
namespace ash {
// An interface describing any shelf component such as the navigation widget,
// the hotseat widget or the status area widget, to make it easier to
// coordinate animations for all of them.
class ASH_EXPORT ShelfComponent {
// Makes the component calculate its new target bounds given the current
// target conditions. It is the component's responsibility to store the
// calculated bounds.
virtual void CalculateTargetBounds() = 0;
// Returns this component's current target bounds, in screen coordinates.
virtual gfx::Rect GetTargetBounds() const = 0;
// Updates the component's layout and bounds to match the most recently
// calculated target bounds. The change should be animated if |animate| is
// true.
virtual void UpdateLayout(bool animate) = 0;
// Updates this component's target bounds according to a gesture that
// is currently being performed. The |shelf_position| parameter is the
// new position of the shelf, its x position if it's vertical or its y
// position if it's horizontal.
virtual void UpdateTargetBoundsForGesture(int shelf_position) = 0;
};
} // namespace ash
#endif // ASH_SHELF_SHELF_COMPONENT_H_
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