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