removenodecommand.cpp

来自「linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自Web」· C++ 代码 · 共 67 行

/*
 * 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 "RemoveNodeCommand.h"

#include "Node.h"
#include <wtf/Assertions.h>

namespace WebCore {

RemoveNodeCommand::RemoveNodeCommand(PassRefPtr<Node> node)
    : SimpleEditCommand(node->document())
    , m_node(node)
{
    ASSERT(m_node);
    ASSERT(m_node->parentNode());
}

void RemoveNodeCommand::doApply()
{
    Node* parent = m_node->parentNode();
    if (!parent)
        return;

    m_parent = parent;
    m_refChild = m_node->nextSibling();

    ExceptionCode ec;
    m_node->remove(ec);
}

void RemoveNodeCommand::doUnapply()
{
    RefPtr<Node> parent = m_parent.release();
    RefPtr<Node> refChild = m_refChild.release();
    if (!parent)
        return;

    ExceptionCode ec;
    parent->insertBefore(m_node.get(), refChild.get(), ec);
}

}