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#ifndef INCLUDED_GENERIC_CONTROLLER_H
#define INCLUDED_GENERIC_CONTROLLER_H
#include "ctrl-source.h"
#include "eca-operator.h"
/**
* Generic controller class that connects controller sources
* to objects supporting dynamic parameter control (classes
* which inherit DYNAMIC_PARAMETERS).
*
* Related design patterns:
* - Decorator (GoF175)
*/
class GENERIC_CONTROLLER : public CONTROLLER_SOURCE {
public:
/** @name Constructors and destructors */
/*@{*/
GENERIC_CONTROLLER(CONTROLLER_SOURCE* source,
OPERATOR* dobj = 0,
int param_id = 0,
double range_low = 0.0,
double range_high = 0.0);
GENERIC_CONTROLLER* clone(void) const { return(0); }
GENERIC_CONTROLLER* new_expr(void) const { return(new GENERIC_CONTROLLER(0)); }
/*@}*/
/** @name Public functions reimplemented from CONTROLLER_SOURCE */
/*@{*/
virtual void init(void);
/**
* Returns the current value, scale it and
* applies it to target objects.
*
* @pre is_valid() == true
*/
virtual parameter_t value(double pos_secs);
virtual void set_initial_value(parameter_t arg) { }
/*@}*/
/** @name Public functions reimplemented from ECA_OBJECT */
/*@{*/
virtual std::string name(void) const { return(source == 0 ? string("") : source->name()); }
/*@}*/
/** @name Public functions reimplemented from DYNAMIC_PARAMETERS */
/*@{*/
virtual bool variable_params(void) const { return true; }
virtual std::string parameter_names(void) const { return("param-id,range-low,range-high," + source->parameter_names()); }
virtual void set_parameter(int param, parameter_t value);
virtual parameter_t get_parameter(int param) const;
/*@}*/
/** @name Public functions */
/*@{*/
bool is_valid(void) const { return(target != 0 && source != 0); }
std::string status(void) const;
void assign_target(OPERATOR* obj);
void assign_source(CONTROLLER_SOURCE* obj);
CONTROLLER_SOURCE* source_pointer(void) const { return(source); }
OPERATOR* target_pointer(void) const { return(target); }
/*@}*/
private:
OPERATOR* target;
CONTROLLER_SOURCE* source;
bool init_called_rep;
int param_id_rep;
double rangelow_rep, rangehigh_rep;
double last_value_pos_rep;
};
#endif
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