DParameterRange.h

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//# DParameterRange.h: class to store and retrieve range parameters
//# Copyright (C) 2000,2001
//# Associated Universities, Inc. Washington DC, USA.
//#
//# This library is free software; you can redistribute it and/or modify it
//# under the terms of the GNU Library General Public License as published by
//# the Free Software Foundation; either version 2 of the License, or (at your
//# option) any later version.
//#
//# This library is distributed in the hope that it will be useful, but WITHOUT
//# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
//# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
//# License for more details.
//#
//# You should have received a copy of the GNU Library General Public License
//# along with this library; if not, write to the Free Software Foundation,
//# Inc., 675 Massachusetts Ave, Cambridge, MA 02139, USA.
//#
//# Correspondence concerning AIPS++ should be addressed as follows:
//#        Internet email: aips2-request@nrao.edu.
//#        Postal address: AIPS++ Project Office
//#                        National Radio Astronomy Observatory
//#                        520 Edgemont Road
//#                        Charlottesville, VA 22903-2475 USA
//#
//# $Id$

#ifndef TRIALDISPLAY_DPARAMETERRANGE_H
#define TRIALDISPLAY_DPARAMETERRANGE_H

#include <casa/aips.h>
#include <display/Display/DisplayParameter.h>
namespace casa { //# NAMESPACE CASA - BEGIN

// <summary>
// A helper class to deal with data ranges to support options
// </summary>
//
// <use visibility=export>
//
// <reviewed reviewer="" date="yyyy/mm/dd" tests="" demos="">
// </reviewed>
//
// <prerequisite>
//   <li> DisplayParameter
// </prerequisite>
//
// <etymology>
// </etymology>
//
// <synopsis>
//
// </synopsis>
//
// <example>
// </example>
//
// <motivation>
// Making things easier
// </motivation>
//
// <todo>
// </todo>
//

        template <class T> class DParameterRange : public DisplayParameter {

        public:

                // Constructor taking the name of the parameter, a short
                // description, some help text, a minimum value, a maximum value, a
                // default value, a current value, and flags indicating whether the
                // parameter is editable.
                DParameterRange(const String name, const String description,
                                const String help, const T minimum, const T maximum,
                                const T resolution, const T defaultvalue, const T value,
                                const String context = "", const Bool editable = True,
                                const Bool provideentry = False, const Bool onrelease=False );

                // (Required) default constructor.
                DParameterRange();

                // (Required) copy constructor.
                DParameterRange(const DParameterRange<T> &other);

                // Destructor.
                virtual ~DParameterRange();

                // (Required) copy assignment.
                DParameterRange<T> &operator=(const DParameterRange<T> &other);

                // Parse <src>record</src>, and update this parameter if a field
                // exists whose name matches that of this parameter.  Return
                // <src>True</src> if the parameter is changed, otherwise return
                // <src>False</src>.
                virtual Bool fromRecord(const RecordInterface &record);

                // Place a record describing this parameter in a sub-field of
                // <src>record</src> with name matching that of this parameter.  If
                // <src>overwrite</src> is <src>True</src>, then any existing field
                // with matching name will be overwritten.  If <src>fullrecord</src>
                // is <src>True</src>, then a complete description of the parameter
                // is given, otherwise just its current value is stored in
                // <src>record</src>.  Presently <src>fullrecord</src> is ignored.
                virtual void toRecord(RecordInterface &record, const Bool fullrecord = True,
                                      const Bool overwrite = False);

                // Return the minimum for this parameter.
                T minimum() {
                        return itsMinimum;
                }

                // Return the maximum for this parameter.
                T maximum() {
                        return itsMaximum;
                }

                // Return the resolution of this parameter.
                T resolution() {
                        return itsResolution;
                }

                // Return the default for this parameter.
                T defaultValue() {
                        return itsDefault;
                }

                // Return the current value of this parameter.
                T value() {
                        return itsValue;
                }

                // Return whether there should be a text box beside the slider.
                // See 'intrange' in the autogui tool documentation for more information.
                Bool provideEntry() {
                        return itsProvideEntry;
                }

                // Return whether the slider event should occur when the user releases the
                // slider, i.e. at the end of setting the value, rather than in real time
                // as the user moves the slider (good for operations which take a long time)
                Bool onRelease( ) {
                        return itsOnRelease;
                }


                // Set or change the minimum for this parameter.
                void setMinimum(const T minimum) {
                        itsMinimum = minimum;
                }

                // Set or change the maximum for this parameter.
                void setMaximum(const T maximum) {
                        itsMaximum = maximum;
                }

                // Set or change the resolution for this parameter.
                void setResolution(const T resolution) {
                        itsResolution = resolution;
                }

                // Set or change the default for this parameter.
                void setDefaultValue(const T defaultValue) {
                        itsDefault = defaultValue;
                }

                // Set or change the current value for this parameter.
                void setValue(const T value) {
                        itsValue = value;
                }

                // Convenient syntax to set (only) the value.
                const T& operator=(const T &value) {
                        itsValue = value;
                        return value;
                }

                // Set or change the provideentry state for this parameter.
                void setProvideEntry(const Bool provideentry) {
                        itsProvideEntry = provideentry;
                }

                // Set or change the onrelease state for this parameter.
                void setOnRelease(const Bool onrelease) {
                        itsOnRelease = onrelease;
                }

        private:

                // Store for the minimum of this parameter.
                T itsMinimum;

                // Store for the maximum of this parameter.
                T itsMaximum;

                // Store for the resolution of this parameter.
                T itsResolution;

                // Store for the default of this parameter.
                T itsDefault;

                // Store for the value of this parameter.
                T itsValue;

                // Store for the 'provideentry' state of this parameter.
                Bool itsProvideEntry;

                // Store for the 'onrelease' state of this parameter
                Bool itsOnRelease;

        };

} //# NAMESPACE CASA - END

#ifndef AIPS_NO_TEMPLATE_SRC
#include <display/Display/DParameterRange.tcc>
#endif

#endif