/*
 * 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.
 */

#pragma once

#include <AK/NonnullRefPtrVector.h>
#include <LibWeb/DOM/Node.h>

namespace Web::DOM {

class ParentNode : public Node {
public:
    template<typename F>
    void for_each_child(F) const;
    template<typename F>
    void for_each_child(F);

    RefPtr<Element> first_element_child();
    RefPtr<Element> last_element_child();

    RefPtr<Element> query_selector(const StringView&);
    NonnullRefPtrVector<Element> query_selector_all(const StringView&);

protected:
    ParentNode(Document& document, NodeType type)
        : Node(document, type)
    {
    }
};

template<typename Callback>
inline void ParentNode::for_each_child(Callback callback) const
{
    for (auto* node = first_child(); node; node = node->next_sibling())
        callback(*node);
}

template<typename Callback>
inline void ParentNode::for_each_child(Callback callback)
{
    for (auto* node = first_child(); node; node = node->next_sibling())
        callback(*node);
}

}

AK_BEGIN_TYPE_TRAITS(Web::DOM::ParentNode)
static bool is_type(const Web::DOM::Node& node) { return node.is_parent_node(); }
AK_END_TYPE_TRAITS()