text: /****************************************************************************
  **
  ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
  ** Contact: http://www.qt-project.org/legal
  **
  ** This file is part of the QtCore module of the Qt Toolkit.
  **
  ** $QT_BEGIN_LICENSE:LGPL$
  ** Commercial License Usage
  ** Licensees holding valid commercial Qt licenses may use this file in
  ** accordance with the commercial license agreement provided with the
  ** Software or, alternatively, in accordance with the terms contained in
  ** a written agreement between you and Digia.  For licensing terms and
  ** conditions see http://qt.digia.com/licensing.  For further information
  ** use the contact form at http://qt.digia.com/contact-us.
  **
  ** GNU Lesser General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU Lesser
  ** General Public License version 2.1 as published by the Free Software
  ** Foundation and appearing in the file LICENSE.LGPL included in the
  ** packaging of this file.  Please review the following information to
  ** ensure the GNU Lesser General Public License version 2.1 requirements
  ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
  **
  ** In addition, as a special exception, Digia gives you certain additional
  ** rights.  These rights are described in the Digia Qt LGPL Exception
  ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
  **
  ** GNU General Public License Usage
  ** Alternatively, this file may be used under the terms of the GNU
  ** General Public License version 3.0 as published by the Free Software
  ** Foundation and appearing in the file LICENSE.GPL included in the
  ** packaging of this file.  Please review the following information to
  ** ensure the GNU General Public License version 3.0 requirements will be
  ** met: http://www.gnu.org/copyleft/gpl.html.
  **
  **
  ** $QT_END_LICENSE$
  **
  ****************************************************************************/
  
  #ifndef QSTATE_H
  #define QSTATE_H
  
  #include <QtCore/qabstractstate.h>
  
  #include <QtCore/qlist.h>
  
  QT_BEGIN_HEADER
  
  QT_BEGIN_NAMESPACE
  
  QT_MODULE(Core)
  
  #ifndef QT_NO_STATEMACHINE
  
  class QAbstractTransition;
  class QSignalTransition;
  
  class QStatePrivate;
  class Q_CORE_EXPORT QState : public QAbstractState
  {
      Q_OBJECT
      Q_PROPERTY(QAbstractState* initialState READ initialState WRITE setInitialState)
      Q_PROPERTY(QAbstractState* errorState READ errorState WRITE setErrorState)
      Q_PROPERTY(ChildMode childMode READ childMode WRITE setChildMode)
      Q_ENUMS(ChildMode)
  public:
      enum ChildMode {
          ExclusiveStates,
          ParallelStates
      };
  
      QState(QState *parent = 0);
      QState(ChildMode childMode, QState *parent = 0);
      ~QState();
  
      QAbstractState *errorState() const;
      void setErrorState(QAbstractState *state);
  
      void addTransition(QAbstractTransition *transition);
      QSignalTransition *addTransition(QObject *sender, const char *signal, QAbstractState *target);
      QAbstractTransition *addTransition(QAbstractState *target);
      void removeTransition(QAbstractTransition *transition);
      QList<QAbstractTransition*> transitions() const;
  
      QAbstractState *initialState() const;
      void setInitialState(QAbstractState *state);
  
      ChildMode childMode() const;
      void setChildMode(ChildMode mode);
  
  #ifndef QT_NO_PROPERTIES
      void assignProperty(QObject *object, const char *name,
                          const QVariant &value);
  #endif
  
  Q_SIGNALS:
      void finished();
      void propertiesAssigned();
  
  protected:
      void onEntry(QEvent *event);
      void onExit(QEvent *event);
  
      bool event(QEvent *e);
  
  protected:
      QState(QStatePrivate &dd, QState *parent);
  
  private:
      Q_DISABLE_COPY(QState)
      Q_DECLARE_PRIVATE(QState)
  };
  
  #endif //QT_NO_STATEMACHINE
  
  QT_END_NAMESPACE
  
  QT_END_HEADER
  
  #endif
  