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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 "SplitTextNodeCommand.h"
#include "Document.h"
#include "Text.h"
#include <wtf/Assertions.h>
namespace WebCore {
SplitTextNodeCommand::SplitTextNodeCommand(PassRefPtr<Text> text, int offset)
: SimpleEditCommand(text->document())
, m_text2(text)
, m_offset(offset)
{
// NOTE: Various callers rely on the fact that the original node becomes
// the second node (i.e. the new node is inserted before the existing one).
// That is not a fundamental dependency (i.e. it could be re-coded), but
// rather is based on how this code happens to work.
ASSERT(m_text2);
ASSERT(m_text2->length() > 0);
ASSERT(m_offset > 0);
ASSERT(m_offset < m_text2->length());
}
void SplitTextNodeCommand::doApply()
{
Node* parent = m_text2->parentNode();
if (!parent || !parent->isContentEditable())
return;
ExceptionCode ec = 0;
String prefixText = m_text2->substringData(0, m_offset, ec);
if (prefixText.isEmpty())
return;
m_text1 = Text::create(document(), prefixText);
ASSERT(m_text1);
document()->markers()->copyMarkers(m_text2.get(), 0, m_offset, m_text1.get(), 0);
insertText1AndTrimText2();
}
void SplitTextNodeCommand::doUnapply()
{
if (!m_text1 || !m_text1->isContentEditable())
return;
ASSERT(m_text1->document() == document());
String prefixText = m_text1->data();
ExceptionCode ec = 0;
m_text2->insertData(0, prefixText, ec);
ASSERT(!ec);
document()->markers()->copyMarkers(m_text1.get(), 0, prefixText.length(), m_text2.get(), 0);
m_text1->remove(ec);
}
void SplitTextNodeCommand::doReapply()
{
if (!m_text1 || !m_text2)
return;
Node* parent = m_text2->parentNode();
if (!parent || !parent->isContentEditable())
return;
insertText1AndTrimText2();
}
void SplitTextNodeCommand::insertText1AndTrimText2()
{
ExceptionCode ec = 0;
m_text2->parentNode()->insertBefore(m_text1.get(), m_text2.get(), ec);
if (ec)
return;
m_text2->deleteData(0, m_offset, ec);
}
} // namespace WebCore
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