84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
/*
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* Copyright (C) 2019 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "CustomUndoStep.h"
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#include "Document.h"
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#include "UndoItem.h"
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#include "UndoManager.h"
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#include "VoidCallback.h"
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namespace WebCore {
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CustomUndoStep::CustomUndoStep(UndoItem& item)
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: m_undoItem(makeWeakPtr(item))
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{
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}
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void CustomUndoStep::unapply()
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{
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if (!isValid())
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return;
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// FIXME: It's currently unclear how input events should be dispatched when unapplying or reapplying custom
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// edit commands. Should the page be allowed to specify a target in the DOM for undo and redo?
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Ref<UndoItem> protectedUndoItem(*m_undoItem);
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protectedUndoItem->document()->updateLayoutIgnorePendingStylesheets();
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protectedUndoItem->undoHandler().handleEvent();
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}
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void CustomUndoStep::reapply()
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{
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if (!isValid())
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return;
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Ref<UndoItem> protectedUndoItem(*m_undoItem);
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protectedUndoItem->document()->updateLayoutIgnorePendingStylesheets();
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protectedUndoItem->redoHandler().handleEvent();
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}
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bool CustomUndoStep::isValid() const
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{
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return m_undoItem && m_undoItem->isValid();
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}
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String CustomUndoStep::label() const
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{
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if (!isValid()) {
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ASSERT_NOT_REACHED();
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return emptyString();
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}
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return m_undoItem->label();
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}
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void CustomUndoStep::didRemoveFromUndoManager()
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{
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if (auto undoItem = std::exchange(m_undoItem, nullptr))
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undoItem->invalidate();
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}
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} // namespace WebCore
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