Source/WebCore/css/DOMCSSPaintWorklet.h

/*
 * Copyright (C) 2018 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#pragma once

#if ENABLE(CSS_PAINTING_API)

#include "Supplementable.h"
#include "Worklet.h"

#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>

namespace WebCore {

class Document;
class Worklet;
class DOMCSSNamespace;

class PaintWorklet final : public Worklet {
public:
    static Ref<PaintWorklet> create(Document& document)
    {
        auto worklet = adoptRef(*new PaintWorklet(document));
        worklet->suspendIfNeeded();
        return worklet;
    }

    // Worklet.
    void addModule(const String& moduleURL, WorkletOptions&&, DOMPromiseDeferred<void>&&) final;
    Vector<Ref<WorkletGlobalScopeProxy>> createGlobalScopes() final;

private:
    explicit PaintWorklet(Document& document)
        : Worklet(document)
    { }
};

class DOMCSSPaintWorklet final : public Supplement<DOMCSSNamespace> {
    WTF_MAKE_FAST_ALLOCATED;
public:
    explicit DOMCSSPaintWorklet(DOMCSSNamespace&) { }

    static PaintWorklet& ensurePaintWorklet(Document&);

private:
    static DOMCSSPaintWorklet* from(DOMCSSNamespace&);
    static const char* supplementName();
};

} // namespace WebCore
#endif