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/*===========================================================================*\
*                                                                            *
*                              OpenFlipper                                   *
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 *           Copyright (c) 2001-2015, RWTH-Aachen University                 *
 *           Department of Computer Graphics and Multimedia                  *
 *                          All rights reserved.                             *
 *                            www.openflipper.org                            *
 *                                                                           *
 *---------------------------------------------------------------------------*
 * This file is part of OpenFlipper.                                         *
 *---------------------------------------------------------------------------*
 *                                                                           *
 * Redistribution and use in source and binary forms, with or without        *
 * modification, are permitted provided that the following conditions        *
 * are met:                                                                  *
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 * 1. Redistributions of source code must retain the above copyright notice, *
 *    this list of conditions and the following disclaimer.                  *
 *                                                                           *
 * 2. 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.   *
 *                                                                           *
 * 3. Neither the name of the copyright holder 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 HOLDER *
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 * 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      *
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*                                                                            *
\*===========================================================================*/

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#ifndef VSI_INPUT_HH
#define VSI_INPUT_HH

//== INCLUDES =================================================================
#include <QString>
#include <QVariant>

#include "inout.hh"

//== NAMESPACES ===============================================================
namespace VSI {

//== CLASS DEFINITION =========================================================

/** Class representing an input of an element
  */
class Input : public InOut {

  public:

    /// Input states
    enum State {
      NoExternalInput = 0x1,
      NoUserInput = 0x2,
      NoRuntimeUserInput = 0x4,
      Optional = 0x8
    };

    /// Constructor
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    explicit Input (Element *_f);
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    /// Current state
    unsigned int state ();

    /// Sets the state
    void setState (unsigned int _state) { state_ = _state; };

    friend class Context;

  private:

    unsigned int state_;

};

//=============================================================================
}
//=============================================================================

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#endif