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/*
* Copyright (C) 2005, 2008 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 COMPUTER, INC. ``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 COMPUTER, INC. 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 "config.h"
#include "SplitElementCommand.h"
#include "Element.h"
#include <wtf/Assertions.h>
namespace WebCore {
SplitElementCommand::SplitElementCommand(PassRefPtr<Element> element, PassRefPtr<Node> atChild)
: SimpleEditCommand(element->document()), m_element2(element), m_atChild(atChild)
{
ASSERT(m_element2);
ASSERT(m_atChild);
}
void SplitElementCommand::doApply()
{
ASSERT(m_element2);
ASSERT(m_atChild);
ASSERT(m_atChild->parentNode() == m_element2);
ExceptionCode ec = 0;
if (!m_element1) {
// create only if needed.
// if reapplying, this object will already exist.
m_element1 = static_pointer_cast<Element>(m_element2->cloneNode(false));
ASSERT(m_element1);
}
m_element2->parent()->insertBefore(m_element1.get(), m_element2.get(), ec);
ASSERT(ec == 0);
// Bail if we were asked to split at a bogus child, to avoid hanging below.
if (!m_atChild || m_atChild->parentNode() != m_element2)
return;
while (m_element2->firstChild() != m_atChild) {
ASSERT(m_element2->firstChild());
m_element1->appendChild(m_element2->firstChild(), ec);
ASSERT(ec == 0);
}
}
void SplitElementCommand::doUnapply()
{
ASSERT(m_element1);
ASSERT(m_element2);
ASSERT(m_atChild);
ASSERT(m_element1->nextSibling() == m_element2);
ASSERT(m_element2->firstChild() && m_element2->firstChild() == m_atChild);
ExceptionCode ec = 0;
while (m_element1->lastChild()) {
m_element2->insertBefore(m_element1->lastChild(), m_element2->firstChild(), ec);
ASSERT(ec == 0);
}
m_element2->parentNode()->removeChild(m_element1.get(), ec);
ASSERT(ec == 0);
}
} // namespace WebCore
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