/*
 * Copyright (c) 2023, Andreas Kling <andreas@ladybird.org>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 */

#pragma once

#include <AK/Optional.h>
#include <LibGC/Cell.h>
#include <LibGfx/DecodedImageFrame.h>
#include <LibGfx/Size.h>
#include <LibWeb/Forward.h>
#include <LibWeb/PixelUnits.h>

namespace Web::Layout {

class ImageProvider {
public:
    virtual ~ImageProvider() { }

    virtual bool is_image_available() const = 0;

    virtual size_t current_frame_index() const = 0;

    virtual GC::Ptr<HTML::DecodedImageData> decoded_image_data() const = 0;

    virtual Optional<CSSPixels> intrinsic_width() const = 0;
    virtual Optional<CSSPixels> intrinsic_height() const = 0;
    Optional<CSSPixelSize> intrinsic_size() const;
    virtual Optional<CSSPixelFraction> intrinsic_aspect_ratio() const = 0;

    virtual Optional<Gfx::DecodedImageFrame> current_image_frame() const;
    virtual Optional<Gfx::DecodedImageFrame> current_image_frame_sized(Gfx::IntSize) const = 0;

    virtual Optional<Gfx::DecodedImageFrame> default_image_frame() const;
    virtual Optional<Gfx::DecodedImageFrame> default_image_frame_sized(Gfx::IntSize) const;

    virtual void set_visible_in_viewport(bool) = 0;

    virtual void image_provider_visit_edges(GC::Cell::Visitor& visitor) const
    {
        visitor.visit(to_html_element());
    }

protected:
    virtual GC::Ptr<DOM::Element const> to_html_element() const = 0;
    static void did_update_alt_text(ImageBox&);
};

}