/*
 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
 * 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT HOLDER 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.
 */

#include <LibCore/Event.h>
#include <LibCore/Object.h>

namespace Core {

ChildEvent::ChildEvent(Type type, Object& child, Object* insertion_before_child)
    : Core::Event(type)
    , m_child(child.make_weak_ptr())
    , m_insertion_before_child(insertion_before_child ? insertion_before_child->make_weak_ptr() : nullptr)
{
}

ChildEvent::~ChildEvent()
{
}

Object* ChildEvent::child()
{
    if (auto ref = m_child.strong_ref())
        return ref.ptr();
    return nullptr;
}

const Object* ChildEvent::child() const
{
    if (auto ref = m_child.strong_ref())
        return ref.ptr();
    return nullptr;
}

Object* ChildEvent::insertion_before_child()
{
    if (auto ref = m_insertion_before_child.strong_ref())
        return ref.ptr();
    return nullptr;
}

const Object* ChildEvent::insertion_before_child() const
{
    if (auto ref = m_insertion_before_child.strong_ref())
        return ref.ptr();
    return nullptr;
}

}