/*
 * 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. 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 "InsertNestedListCommand.h"

#include "Editing.h"
#include "HTMLLIElement.h"
#include "HTMLNames.h"
#include "InsertListCommand.h"
#include "ModifySelectionListLevel.h"

namespace WebCore {

void InsertNestedListCommand::insertUnorderedList(Document& document)
{
    InsertNestedListCommand::create(document, Type::UnorderedList)->apply();
}

void InsertNestedListCommand::insertOrderedList(Document& document)
{
    InsertNestedListCommand::create(document, Type::OrderedList)->apply();
}

void InsertNestedListCommand::doApply()
{
    if (endingSelection().isNoneOrOrphaned() || !endingSelection().isContentRichlyEditable())
        return;

    if (auto enclosingItem = makeRefPtr(enclosingElementWithTag(endingSelection().visibleStart().deepEquivalent(), HTMLNames::liTag))) {
        auto newListItem = HTMLLIElement::create(document());
        insertNodeAfter(newListItem.copyRef(), *enclosingItem);
        setEndingSelection({ Position { newListItem.ptr(), Position::PositionIsBeforeChildren }, DOWNSTREAM });

        auto commandType = m_type == Type::OrderedList ? IncreaseSelectionListLevelCommand::Type::OrderedList : IncreaseSelectionListLevelCommand::Type::UnorderedList;
        applyCommandToComposite(IncreaseSelectionListLevelCommand::create(document(), commandType));
        return;
    }

    auto commandType = m_type == Type::OrderedList ? InsertListCommand::Type::OrderedList : InsertListCommand::Type::UnorderedList;
    applyCommandToComposite(InsertListCommand::create(document(), commandType));
}

} // namespace WebCore
