Source/WebCore/Modules/async-clipboard/NavigatorClipboard.cpp

/*
 * Copyright (C) 2019 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. AND ITS CONTRIBUTORS ``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 ITS 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.
 */

#include "config.h"
#include "NavigatorClipboard.h"

#include "Clipboard.h"
#include "Navigator.h"
#include <wtf/StdLibExtras.h>

namespace WebCore {

NavigatorClipboard::NavigatorClipboard(Navigator& navigator)
    : m_navigator(navigator)
{
}

NavigatorClipboard::~NavigatorClipboard() = default;

RefPtr<Clipboard> NavigatorClipboard::clipboard(Navigator& navigator)
{
    return NavigatorClipboard::from(navigator)->clipboard();
}

RefPtr<Clipboard> NavigatorClipboard::clipboard()
{
    if (!m_clipboard)
        m_clipboard = Clipboard::create(m_navigator);
    return m_clipboard;
}

NavigatorClipboard* NavigatorClipboard::from(Navigator& navigator)
{
    auto* supplement = static_cast<NavigatorClipboard*>(Supplement<Navigator>::from(&navigator, supplementName()));
    if (!supplement) {
        auto newSupplement = makeUnique<NavigatorClipboard>(navigator);
        supplement = newSupplement.get();
        provideTo(&navigator, supplementName(), WTFMove(newSupplement));
    }
    return supplement;
}

const char* NavigatorClipboard::supplementName()
{
    return "NavigatorClipboard";
}

}