data_view_mediator.h

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//--------------------------------------------------
//--------------------------------------------------

#ifndef IMEDGINEDATA_VIEW_MEDIATOR_H
#define IMEDGINEDATA_VIEW_MEDIATOR_H

#include "../global/global_definitions.h"
#include "../datasets/dataset.h"
#include "../viewer/view.h"
#include "../viewer/view_factory.h"
#include "../exceptions/null_pointer_exception.h"
#include "../exceptions/invalid_cast_exception.h"

#include <map>

namespace imedgine 
{ 
  //--------------------------------------------------
  //--------------------------------------------------

  class DataViewMediator
  {
  public:
    
    //--------------------------------------------------

    DataViewMediator();
  
    //--------------------------------------------------

    ~DataViewMediator();
    
    //--------------------------------------------------

    view_pointer_type getViewOfDataset(dataset_pointer_type dataset,
                                       view_type type) 
        throw(NullPointerException);
    
    //--------------------------------------------------
    
    void getDependentViewIDsOfDataset(
        dataset_key_type dataset_key, view_id_container_type& target_container) const
        throw(NullPointerException);
    
    //--------------------------------------------------
    
    bool deleteView(unsigned int view_id)
        throw(NullPointerException);  
    
    //--------------------------------------------------
    
    bool removeDataset(
        dataset_key_type dataset_key);  
     
    //--------------------------------------------------
   
    void lockDatasets(dataset_key_type dataset_left, 
                      dataset_key_type dataset_right);
    
    //--------------------------------------------------
   
    void unlockDatasets(dataset_key_type dataset_left, 
                      dataset_key_type dataset_right);
    
    //--------------------------------------------------
    
    bool areDatasetsLocked(dataset_key_type dataset_left, 
                           dataset_key_type dataset_right);
    
    
    //--------------------------------------------------

    void updateDependentViews(dataset_key_type dataset)
        throw(NullPointerException);
    
    //--------------------------------------------------

    void updateDataChanged(dataset_key_type dataset,
                           dataset_attribute_type changed_attribute)
        throw(NullPointerException, InvalidCastException);
    
  protected:
      
    //--------------------------------------------------

    void registerViewOfDataset(dataset_pointer_type dataset, 
                               view_pointer_type view)
        throw(NullPointerException);
    
    //--------------------------------------------------
    void registerHybridViewOfDatasets(
        dataset_pointer_type first_dataset, dataset_pointer_type second_dataset,
    view_pointer_type hybrid_view);       
    
    typedef std::multimap<dataset_key_type, view_pointer_type>
        dataset_to_view_mmap_type;
    typedef dataset_to_view_mmap_type::iterator 
        dataset_to_view_mmap_iterator_type;
    typedef dataset_to_view_mmap_type::const_iterator 
        dataset_to_view_mmap_const_iterator_type;
    typedef std::multimap<dataset_key_type, dataset_key_type>
        dataset_to_datset_mmap_type;
    typedef dataset_to_datset_mmap_type::iterator 
        dataset_to_dataset_mmap_iterator_type;
        
    dataset_to_view_mmap_type dataset_to_view_mmap_;
    
    dataset_to_datset_mmap_type dataset_to_dataset_mmap_;
    
    ViewFactory view_factory_;  
        
  private:
    
    DataViewMediator(DataViewMediator const&) 
    {}
    
    DataViewMediator& operator = (DataViewMediator const&) 
    {
      return(*this);
    }      
  };
}

#endif

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