DisplayDataHolder.h

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//# Copyright (C) 2005
//# 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
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#ifndef DISPLAYDATAHOLDER_H_
#define DISPLAYDATAHOLDER_H_

#include <list>
namespace casa {

class QtDisplayData;
class ImageTracker;
class ImageDisplayer;

class DisplayDataHolder {
public:
        DisplayDataHolder();

        //Adds the DisplayData.
        void addDD( QtDisplayData* dd, int position = -1 );

        // Removes the QDD from the list and deletes it (if it existed --
        // Return value: whether qdd was in the list in the first place).
        bool removeDD(QtDisplayData* qdd, bool signal = true);
        void removeDDAll();

        // Insert and discard to basically the same thing as add/remove
        // except that they perform the operation through a GUI level
        // if one is available.
        void insertDD( QtDisplayData* dd, int position );
        void discardDD( QtDisplayData* dd, bool signal );

        //Iteration support
        typedef std::list<QtDisplayData *> DisplayDataList;
        typedef DisplayDataList::const_iterator DisplayDataIterator;
        int getCount() const;
        bool isEmpty() const;
        DisplayDataIterator beginDD () const;
        DisplayDataIterator endDD () const;

        //Controlling DD
        QtDisplayData* getDDControlling( ) const;
        void setDDControlling( QtDisplayData* controllingDD );

        // retrieve a DD with given name (0 if none).
        QtDisplayData* getDD(const std::string& name) const;

        // Check that a given DD is on the list.
        bool exists(QtDisplayData* qdd) const;

        void setImageTracker( ImageTracker* tracker );
        void setImageDisplayer( ImageDisplayer* displayer );
        virtual ~DisplayDataHolder();
private:
        DisplayDataHolder( const DisplayDataHolder& displayDataHolder );
        DisplayDataHolder operator=( const DisplayDataHolder& displayDataHolder );
        ImageTracker* imageTracker;
        ImageDisplayer* imageDisplayer;
        QtDisplayData *controlling_dd;
        std::list<QtDisplayData*> dataList;
};

} /* namespace casa */
#endif /* DISPLAYDATAHOLDER_H_ */