// ----------------------------------------------------------------------------
// -                        Open3D: www.open3d.org                            -
// ----------------------------------------------------------------------------
// The MIT License (MIT)
//
// Copyright (c) 2018 www.open3d.org
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
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// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// ----------------------------------------------------------------------------

#pragma once

#include <functional>

#include "Open3D/GUI/Widget.h"

namespace open3d {
namespace gui {

class Checkbox : public Widget {
public:
    explicit Checkbox(const char* name);
    ~Checkbox();

    bool IsChecked() const;
    void SetChecked(bool checked);

    Size CalcPreferredSize(const Theme& theme) const override;

    DrawResult Draw(const DrawContext& context) override;

    /// Specifies a callback function which will be called when the box
    /// changes checked state as a result of user action.
    void SetOnChecked(std::function<void(bool)> on_checked);

private:
    struct Impl;
    std::unique_ptr<Impl> impl_;
};

}  // namespace gui
}  // namespace open3d