Source/WebCore/platform/graphics/mac/DisplayConfigurationMonitor.cpp

/*
 * Copyright (C) 2021 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 "DisplayConfigurationMonitor.h"

#if PLATFORM(MAC)

#include <wtf/ThreadAssertions.h>

namespace WebCore {

DisplayConfigurationMonitor::Client::Client() = default;

DisplayConfigurationMonitor::Client::~Client() = default;

DisplayConfigurationMonitor::DisplayConfigurationMonitor() = default;

DisplayConfigurationMonitor::~DisplayConfigurationMonitor() = default;

DisplayConfigurationMonitor& DisplayConfigurationMonitor::singleton()
{
    assertIsMainThread();
    static NeverDestroyed<DisplayConfigurationMonitor> instance;
    return instance;
}

void DisplayConfigurationMonitor::addClient(Client& client)
{
    ASSERT(!m_clients.contains(&client));
    m_clients.append(&client);
}

void DisplayConfigurationMonitor::removeClient(Client& client)
{
    ASSERT(m_clients.contains(&client));
    m_clients.removeFirst(&client);
}

void DisplayConfigurationMonitor::dispatchDisplayWasReconfigured(CGDisplayChangeSummaryFlags flags)
{
    if (!(flags & kCGDisplaySetModeFlag))
        return;
    for (auto* client : copyToVector(m_clients))
        client->displayWasReconfigured();
}

}

#endif