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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 "core/editing/commands/MergeIdenticalElementsCommand.h"
#include "bindings/core/v8/ExceptionState.h"
#include "core/dom/Element.h"
#include "core/editing/EditingUtilities.h"
namespace blink {
MergeIdenticalElementsCommand::MergeIdenticalElementsCommand(Element* first,
Element* second)
: SimpleEditCommand(first->document()),
m_element1(first),
m_element2(second) {
DCHECK(m_element1);
DCHECK(m_element2);
DCHECK_EQ(m_element1->nextSibling(), m_element2);
}
void MergeIdenticalElementsCommand::doApply(EditingState*) {
if (m_element1->nextSibling() != m_element2 ||
!hasEditableStyle(*m_element1) || !hasEditableStyle(*m_element2))
return;
m_atChild = m_element2->firstChild();
NodeVector children;
getChildNodes(*m_element1, children);
for (auto& child : children) {
m_element2->insertBefore(child.release(), m_atChild.get(),
IGNORE_EXCEPTION_FOR_TESTING);
}
m_element1->remove(IGNORE_EXCEPTION_FOR_TESTING);
}
void MergeIdenticalElementsCommand::doUnapply() {
DCHECK(m_element1);
DCHECK(m_element2);
Node* atChild = m_atChild.release();
ContainerNode* parent = m_element2->parentNode();
if (!parent || !hasEditableStyle(*parent))
return;
DummyExceptionStateForTesting exceptionState;
parent->insertBefore(m_element1.get(), m_element2.get(), exceptionState);
if (exceptionState.hadException())
return;
HeapVector<Member<Node>> children;
for (Node* child = m_element2->firstChild(); child && child != atChild;
child = child->nextSibling())
children.push_back(child);
for (auto& child : children)
m_element1->appendChild(child.release(), exceptionState);
}
DEFINE_TRACE(MergeIdenticalElementsCommand) {
visitor->trace(m_element1);
visitor->trace(m_element2);
visitor->trace(m_atChild);
SimpleEditCommand::trace(visitor);
}
} // namespace blink
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