76 lines
2.5 KiB
C++
76 lines
2.5 KiB
C++
/*
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* Copyright (C) 2012 Google 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 are
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* met:
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*
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* * 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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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following disclaimer
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* in the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "ExceptionOr.h"
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#include <wtf/Vector.h>
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namespace WebCore {
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class InspectorHistory final {
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WTF_MAKE_NONCOPYABLE(InspectorHistory);
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WTF_MAKE_FAST_ALLOCATED;
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public:
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class Action {
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WTF_MAKE_FAST_ALLOCATED;
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public:
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virtual ~Action() = default;
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virtual String mergeId() { return emptyString(); }
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virtual void merge(std::unique_ptr<Action>) { };
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virtual ExceptionOr<void> perform() = 0;
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virtual ExceptionOr<void> undo() = 0;
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virtual ExceptionOr<void> redo() = 0;
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virtual bool isUndoableStateMark() { return false; }
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private:
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String m_name;
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};
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InspectorHistory() = default;
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ExceptionOr<void> perform(std::unique_ptr<Action>);
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void markUndoableState();
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ExceptionOr<void> undo();
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ExceptionOr<void> redo();
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void reset();
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private:
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Vector<std::unique_ptr<Action>> m_history;
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size_t m_afterLastActionIndex { 0 };
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};
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} // namespace WebCore
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