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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 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 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 "CompositeEditCommand.h"
#include "Document.h"
#include "DocumentMarkerController.h"
#include "Text.h"
#include <wtf/Assertions.h>
namespace WebCore {
SplitTextNodeCommand::SplitTextNodeCommand(Ref<Text>&& text, int offset)
: SimpleEditCommand(text->document())
, m_text2(WTFMove(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->length() > 0);
ASSERT(m_offset > 0);
ASSERT(m_offset < m_text2->length());
}
void SplitTextNodeCommand::doApply()
{
ContainerNode* parent = m_text2->parentNode();
if (!parent || !parent->hasEditableStyle())
return;
auto result = m_text2->substringData(0, m_offset);
if (result.hasException())
return;
auto prefixText = result.releaseReturnValue();
if (prefixText.isEmpty())
return;
m_text1 = Text::create(document(), WTFMove(prefixText));
ASSERT(m_text1);
document().markers().copyMarkers(m_text2, { 0, m_offset }, *m_text1);
insertText1AndTrimText2();
}
void SplitTextNodeCommand::doUnapply()
{
if (!m_text1 || !m_text1->hasEditableStyle())
return;
ASSERT(&m_text1->document() == &document());
String prefixText = m_text1->data();
m_text2->insertData(0, prefixText);
document().markers().copyMarkers(*m_text1, { 0, prefixText.length() }, m_text2);
m_text1->remove();
}
void SplitTextNodeCommand::doReapply()
{
if (!m_text1)
return;
ContainerNode* parent = m_text2->parentNode();
if (!parent || !parent->hasEditableStyle())
return;
insertText1AndTrimText2();
}
void SplitTextNodeCommand::insertText1AndTrimText2()
{
if (m_text2->parentNode()->insertBefore(*m_text1, m_text2.ptr()).hasException())
return;
m_text2->deleteData(0, m_offset);
}
#ifndef NDEBUG
void SplitTextNodeCommand::getNodesInCommand(HashSet<Ref<Node>>& nodes)
{
addNodeAndDescendants(m_text1.get(), nodes);
addNodeAndDescendants(m_text2.ptr(), nodes);
}
#endif
} // namespace WebCore