1/* 2 * Copyright (C) 2012 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef InspectorHistory_h 32#define InspectorHistory_h 33 34#include "ExceptionCode.h" 35 36#include <wtf/OwnPtr.h> 37#include <wtf/Vector.h> 38#include <wtf/text/WTFString.h> 39 40namespace WebCore { 41 42class ContainerNode; 43class Element; 44class Node; 45 46#if ENABLE(INSPECTOR) 47 48class InspectorHistory { 49 WTF_MAKE_NONCOPYABLE(InspectorHistory); WTF_MAKE_FAST_ALLOCATED; 50public: 51 class Action { 52 WTF_MAKE_FAST_ALLOCATED; 53 public: 54 Action(const String& name); 55 virtual ~Action(); 56 virtual String toString(); 57 58 virtual String mergeId(); 59 virtual void merge(PassOwnPtr<Action>); 60 61 virtual bool perform(ExceptionCode&) = 0; 62 63 virtual bool undo(ExceptionCode&) = 0; 64 virtual bool redo(ExceptionCode&) = 0; 65 66 virtual bool isUndoableStateMark(); 67 private: 68 String m_name; 69 }; 70 71 InspectorHistory(); 72 virtual ~InspectorHistory(); 73 74 bool perform(PassOwnPtr<Action>, ExceptionCode&); 75 void markUndoableState(); 76 77 bool undo(ExceptionCode&); 78 bool redo(ExceptionCode&); 79 void reset(); 80 81private: 82 Vector<OwnPtr<Action> > m_history; 83 size_t m_afterLastActionIndex; 84}; 85 86#endif // ENABLE(INSPECTOR) 87 88} // namespace WebCore 89 90#endif // !defined(InspectorHistory_h) 91