/* * Copyright (C) 2012 Google 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: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 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. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT * OWNER OR 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. */ #ifndef InspectorHistory_h #define InspectorHistory_h #include "ExceptionCode.h" #include <wtf/Vector.h> #include <wtf/text/WTFString.h> namespace WebCore { class ContainerNode; class Element; class Node; class InspectorHistory final { WTF_MAKE_NONCOPYABLE(InspectorHistory); WTF_MAKE_FAST_ALLOCATED; public: class Action { WTF_MAKE_FAST_ALLOCATED; public: Action(const String& name); virtual ~Action(); virtual String toString(); virtual String mergeId(); virtual void merge(std::unique_ptr<Action>); virtual bool perform(ExceptionCode&) = 0; virtual bool undo(ExceptionCode&) = 0; virtual bool redo(ExceptionCode&) = 0; virtual bool isUndoableStateMark(); private: String m_name; }; InspectorHistory(); ~InspectorHistory(); bool perform(std::unique_ptr<Action>, ExceptionCode&); void markUndoableState(); bool undo(ExceptionCode&); bool redo(ExceptionCode&); void reset(); private: Vector<std::unique_ptr<Action>> m_history; size_t m_afterLastActionIndex; }; } // namespace WebCore #endif // !defined(InspectorHistory_h)