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/*
* Copyright (C) 2019 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. AND ITS CONTRIBUTORS ``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 ITS 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 "CustomUndoStep.h"
#include "Document.h"
#include "UndoItem.h"
#include "UndoManager.h"
#include "VoidCallback.h"
namespace WebCore {
CustomUndoStep::CustomUndoStep(UndoItem& item)
: m_undoItem(item)
{
}
void CustomUndoStep::unapply()
{
if (!isValid())
return;
// FIXME: It's currently unclear how input events should be dispatched when unapplying or reapplying custom
// edit commands. Should the page be allowed to specify a target in the DOM for undo and redo?
Ref<UndoItem> protectedUndoItem(*m_undoItem);
protectedUndoItem->protectedDocument()->updateLayoutIgnorePendingStylesheets();
protectedUndoItem->undoHandler().handleEvent();
}
void CustomUndoStep::reapply()
{
if (!isValid())
return;
Ref<UndoItem> protectedUndoItem(*m_undoItem);
protectedUndoItem->protectedDocument()->updateLayoutIgnorePendingStylesheets();
protectedUndoItem->redoHandler().handleEvent();
}
bool CustomUndoStep::isValid() const
{
return m_undoItem && m_undoItem->isValid();
}
String CustomUndoStep::label() const
{
if (!isValid()) {
ASSERT_NOT_REACHED();
return emptyString();
}
return m_undoItem->label();
}
void CustomUndoStep::didRemoveFromUndoManager()
{
if (RefPtr undoItem = std::exchange(m_undoItem, nullptr).get())
undoItem->invalidate();
}
} // namespace WebCore
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