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/*
* 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 THIRD_PARTY_BLINK_RENDERER_CORE_INSPECTOR_INSPECTOR_HISTORY_H_
#define THIRD_PARTY_BLINK_RENDERER_CORE_INSPECTOR_INSPECTOR_HISTORY_H_
#include "base/memory/scoped_refptr.h"
#include "third_party/blink/renderer/core/core_export.h"
#include "third_party/blink/renderer/platform/heap/handle.h"
#include "third_party/blink/renderer/platform/wtf/text/wtf_string.h"
#include "third_party/blink/renderer/platform/wtf/vector.h"
namespace blink {
class ExceptionState;
class CORE_EXPORT InspectorHistory final
: public GarbageCollected<InspectorHistory> {
public:
class CORE_EXPORT Action : public GarbageCollected<Action> {
public:
explicit Action(const String& name);
virtual ~Action();
virtual void Trace(Visitor*) const;
virtual String ToString();
virtual String MergeId();
virtual void Merge(Action*);
virtual bool Perform(ExceptionState&) = 0;
virtual bool Undo(ExceptionState&) = 0;
virtual bool Redo(ExceptionState&) = 0;
virtual bool IsNoop() { return false; }
virtual bool IsUndoableStateMark();
private:
String name_;
};
InspectorHistory();
InspectorHistory(const InspectorHistory&) = delete;
InspectorHistory& operator=(const InspectorHistory&) = delete;
void Trace(Visitor*) const;
bool Perform(Action*, ExceptionState&);
void AppendPerformedAction(Action*);
void MarkUndoableState();
bool Undo(ExceptionState&);
bool Redo(ExceptionState&);
void Reset();
private:
HeapVector<Member<Action>> history_;
wtf_size_t after_last_action_index_;
};
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_CORE_INSPECTOR_INSPECTOR_HISTORY_H_
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