81 lines
2.6 KiB
C++
81 lines
2.6 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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#pragma once
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#include "VoidCallback.h"
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#include <wtf/IsoMalloc.h>
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#include <wtf/RefCounted.h>
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#include <wtf/WeakPtr.h>
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#include <wtf/text/WTFString.h>
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namespace WebCore {
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class Document;
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class UndoManager;
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class UndoItem : public RefCounted<UndoItem>, public CanMakeWeakPtr<UndoItem> {
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WTF_MAKE_ISO_ALLOCATED(UndoItem);
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public:
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struct Init {
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String label;
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RefPtr<VoidCallback> undo;
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RefPtr<VoidCallback> redo;
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};
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static Ref<UndoItem> create(Init&& init)
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{
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return adoptRef(*new UndoItem(WTFMove(init)));
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}
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bool isValid() const;
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void invalidate();
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Document* document() const;
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UndoManager* undoManager() const;
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void setUndoManager(UndoManager*);
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const String& label() const { return m_label; }
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VoidCallback& undoHandler() const { return m_undoHandler.get(); }
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VoidCallback& redoHandler() const { return m_redoHandler.get(); }
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private:
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UndoItem(Init&& init)
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: m_label(WTFMove(init.label))
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, m_undoHandler(init.undo.releaseNonNull())
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, m_redoHandler(init.redo.releaseNonNull())
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{
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}
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String m_label;
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Ref<VoidCallback> m_undoHandler;
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Ref<VoidCallback> m_redoHandler;
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WeakPtr<UndoManager> m_undoManager;
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WeakPtr<Document> m_document;
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};
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} // namespace WebCore
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