text: /****************************************************************************/
  /// @file    StaticCommand.h
  /// @author  Daniel Krajzewicz
  /// @author  Michael Behrisch
  /// @date    Wed, 13.02.2008
  /// @version $Id:StaticCommand.h 4699 2007-11-09 14:05:13Z dkrajzew $
  ///
  // A wrapper for a Command function
  /****************************************************************************/
  // SUMO, Simulation of Urban MObility; see http://sumo.dlr.de/
  // Copyright (C) 2001-2016 DLR (http://www.dlr.de/) and contributors
  /****************************************************************************/
  //
  //   This file is part of SUMO.
  //   SUMO is free software: you can redistribute it and/or modify
  //   it under the terms of the GNU General Public License as published by
  //   the Free Software Foundation, either version 3 of the License, or
  //   (at your option) any later version.
  //
  /****************************************************************************/
  #ifndef StaticCommand_h
  #define StaticCommand_h
  
  
  // ===========================================================================
  // included modules
  // ===========================================================================
  #ifdef _MSC_VER
  #include <windows_config.h>
  #else
  #include <config.h>
  #endif
  
  #include "Command.h"
  
  
  // ===========================================================================
  // class definition
  // ===========================================================================
  /**
   * @class StaticCommand
   * @brief A wrapper for a Command function
   *
   * @see Design Patterns, Gamma et al.
   * @see Command
   * @see MSEventControl
   */
  template< class T  >
  class StaticCommand : public Command {
  public:
      /// @brief Type of the function to execute.
      typedef SUMOTime(*Operation)(SUMOTime);
  
  
  public:
      /**
       * @brief Constructor.
       *
       * @param[in] receiver Pointer to object of type T that will receive a call to one of it's methods.
       * @param[in] operation The objects' method that will be called on execute()
       */
      StaticCommand(Operation operation)
          : myOperation(operation), myAmDescheduledByParent(false) {}
  
  
      /// @brief Destructor
      ~StaticCommand() {}
  
  
      /** @brief Marks this Command as being descheduled
       *
       * A simple boolean marker ("myAmDescheduledByParent") is set which
       *  prevents this command from being executed.
       */
      void deschedule() {
          myAmDescheduledByParent = true;
      }
  
  
  
      /// @name Derived from Command
      /// @{
  
      /** @brief Executes the command.
       *
       * If the command is not descheduled, the stored method of the stored instance
       *  is called.
       *
       * @param[in] currentTime The current simulation time
       * @return The time after which the command shall be executed again, 0 if this command shall be descheduled.
       * @exception ProcessError Derived actions may throw this exception
       */
      SUMOTime execute(SUMOTime currentTime) {
          // do not execute if the command was descheduled
          if (myAmDescheduledByParent) {
              return 0;
          }
          // execute if stil valid
          return (*myOperation)(currentTime);
      }
      /// @}
  
  
  private:
      /// @brief The object's operation to perform.
      Operation myOperation;
  
      /// @brief Whether this command was descheduled (is invalid) and shall not be executed
      bool myAmDescheduledByParent;
  
  
  };
  
  
  #endif
  
  /****************************************************************************/
  
  