TutorialStateContext.h

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/******************************************************************************************************
 * (C) 2014 markummitchell@github.com. This file is part of Engauge Digitizer, which is released      *
 * under GNU General Public License version 2 (GPLv2) or (at your option) any later version. See file *
 * LICENSE or go to gnu.org/licenses for details. Distribution requires prior written permission.     *
 ******************************************************************************************************/
 
#ifndef TUTORIAL_STATE_CONTEXT_H
#define TUTORIAL_STATE_CONTEXT_H
 
#include <QObject>
#include <QVector>
#include "TutorialStateAbstractBase.h"
 
class QTimer;
class TutorialDlg;

class TutorialStateContext : public QObject
{
  Q_OBJECT;
 
 public:
  TutorialStateContext(TutorialDlg &tutorialDlg);

  ~TutorialStateContext();

  void requestDelayedStateTransition (TutorialState tutorialState);

  void requestImmediateStateTransition (TutorialState tutorialState);

  TutorialDlg &tutorialDlg();
 
 private slots:
  void slotTimeout ();
 
 private:
 
  void completeRequestedStateTransitionIfExists ();
  void createStates ();
  void createTimer ();
 
  QVector<TutorialStateAbstractBase*> m_states;
  TutorialState m_currentState;
  TutorialState m_requestedState; // Same as m_currentState until requestStateTransition is called
 
  TutorialDlg &m_tutorialDlg;
 
  // Timer for delayed state transitions
  QTimer *m_timer;
};
 
#endif // TUTORIAL_STATE_CONTEXT_H