/*
 * Copyright (c) 2009 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 *
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 * in the documentation and/or other materials provided with the
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 * this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "core/editing/ReplaceNodeWithSpanCommand.h"

#include "HTMLNames.h"
#include "bindings/v8/ExceptionStatePlaceholder.h"
#include "core/editing/htmlediting.h"
#include "core/html/HTMLElement.h"
#include "wtf/Assertions.h"

namespace WebCore {

using namespace HTMLNames;

ReplaceNodeWithSpanCommand::ReplaceNodeWithSpanCommand(PassRefPtr<HTMLElement> element)
    : SimpleEditCommand(element->document())
    , m_elementToReplace(element)
{
    ASSERT(m_elementToReplace);
}

static void swapInNodePreservingAttributesAndChildren(HTMLElement* newNode, HTMLElement* nodeToReplace)
{
    ASSERT(nodeToReplace->inDocument());
    RefPtr<ContainerNode> parentNode = nodeToReplace->parentNode();
    parentNode->insertBefore(newNode, nodeToReplace);

    NodeVector children;
    getChildNodes(nodeToReplace, children);
    for (size_t i = 0; i < children.size(); ++i)
        newNode->appendChild(children[i]);

    // FIXME: Fix this to send the proper MutationRecords when MutationObservers are present.
    newNode->cloneDataFromElement(*nodeToReplace);

    parentNode->removeChild(nodeToReplace, ASSERT_NO_EXCEPTION);
}

void ReplaceNodeWithSpanCommand::doApply()
{
    if (!m_elementToReplace->inDocument())
        return;
    if (!m_spanElement)
        m_spanElement = createHTMLElement(m_elementToReplace->document(), spanTag);
    swapInNodePreservingAttributesAndChildren(m_spanElement.get(), m_elementToReplace.get());
}

void ReplaceNodeWithSpanCommand::doUnapply()
{
    if (!m_spanElement->inDocument())
        return;
    swapInNodePreservingAttributesAndChildren(m_elementToReplace.get(), m_spanElement.get());
}

} // namespace WebCore