xref: /external/webkit/Source/WebCore/editing/ReplaceNodeWithSpanCommand.cpp

/*
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#include "config.h"
#include "ReplaceNodeWithSpanCommand.h"

#include "htmlediting.h"
#include "HTMLElement.h"
#include "HTMLNames.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());
    ExceptionCode ec = 0;
    ContainerNode* parentNode = nodeToReplace->parentNode();
    parentNode->insertBefore(newNode, nodeToReplace, ec);
    ASSERT(!ec);

    RefPtr<Node> nextChild;
    for (Node* child = nodeToReplace->firstChild(); child; child = nextChild.get()) {
        nextChild = child->nextSibling();
        newNode->appendChild(child, ec);
        ASSERT(!ec);
    }

    newNode->attributes()->setAttributes(*nodeToReplace->attributes());

    parentNode->removeChild(nodeToReplace, ec);
    ASSERT(!ec);
}

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