Source/core/editing/SplitTextNodeContainingElementCommand.cpp

/*
 * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *    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
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#include "config.h"
#include "core/editing/SplitTextNodeContainingElementCommand.h"

#include "core/dom/Element.h"
#include "core/dom/Text.h"
#include "core/rendering/RenderObject.h"
#include "wtf/Assertions.h"

namespace WebCore {

SplitTextNodeContainingElementCommand::SplitTextNodeContainingElementCommand(PassRefPtr<Text> text, int offset)
    : CompositeEditCommand(text->document()), m_text(text), m_offset(offset)
{
    ASSERT(m_text);
    ASSERT(m_text->length() > 0);
}

void SplitTextNodeContainingElementCommand::doApply()
{
    ASSERT(m_text);
    ASSERT(m_offset > 0);

    splitTextNode(m_text.get(), m_offset);

    Element* parent = m_text->parentElement();
    if (!parent || !parent->parentElement() || !parent->parentElement()->rendererIsEditable())
        return;

    RenderObject* parentRenderer = parent->renderer();
    if (!parentRenderer || !parentRenderer->isInline()) {
        wrapContentsInDummySpan(parent);
        Node* firstChild = parent->firstChild();
        if (!firstChild || !firstChild->isElementNode())
            return;
        parent = toElement(firstChild);
    }

    splitElement(parent, m_text);
}

}