include/entityEditorImpl/entityEditorHistory.h

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/*******************************************************************************
** Copyright (c) 2008 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
/*******************************************************************************
** $RCSfile: entityEditorHistory.h,v $ $Revision: 1.7 $ $State: Exp $
*******************************************************************************/


#ifndef DtEntityEditorHistory_H_
#define DtEntityEditorHistory_H_

#include "entityEditorImpl/entityEditorImplDefines.h"
#include <QtGui/QWidget>
#include <QtCore/QMap>
#include <QtCore/QVariant>
#include <QtCore/QString>

class DtEntityEditorList;
class QPushButton;
class DtModelSetEntry;
class DtUiElementEvent;

class DT_DLL_entityeditorimpl DtHistoryItem
{
public:
   DtHistoryItem() : myModel(0) {};
   DtHistoryItem(DtModelSetEntry* m, const QMap<QString, QVariant>& state) : myModel(m), myState(state) {};
   DtHistoryItem(const DtHistoryItem& orig) : myModel(orig.myModel), myState(orig.myState) {};
   DtHistoryItem& operator=(const DtHistoryItem& rhs) { myModel = rhs.myModel; myState = rhs.myState; return *this; };

   DtModelSetEntry* myModel;
   QMap<QString, QVariant> myState;
};

class DT_DLL_entityeditorimpl DtEntityEditorHistory : public QWidget
{
   Q_OBJECT
protected:
   static const QMap<QString, QVariant> theEmptyStringVariantMap;
public:
   DtEntityEditorHistory(QWidget* p);

   virtual void init(DtEntityEditorList* parent);

   virtual void clearHistory();

   virtual void addHistoryItem(DtModelSetEntry*, const QMap<QString, QVariant>& state = theEmptyStringVariantMap);
   virtual void setUiState(int i, const QMap<QString, QVariant>&);

   int count() const { return myHistory.count(); };
   int historyIndex() const { return myHistoryIndex; };

   virtual void updateUiSaveState(int i, const DtUiElementEvent& e);
   virtual QMap<QString, QVariant> currentUiState() const;

public slots:
   virtual void moveBackward();
   virtual void moveForward();

   virtual void moveTo(int);

protected:
   virtual void updateButtons();

protected:
   DtEntityEditorList*  myParent;
   QPushButton*         myForward;
   QPushButton*         myBackward;
   QVector<DtHistoryItem>    myHistory;
   int                  myHistoryIndex;
   bool                 myMoving;
};

#endif