#ifndef __CPPLUGINS__INTERFACE__WORKSPACE__H__
#define __CPPLUGINS__INTERFACE__WORKSPACE__H__

#include <cpExtensions/DataStructures/Graph.h>
#include <cpPlugins/Interface/Interface.h>
#include <cpPlugins/Interface/DataObject.h>
#include <cpPlugins/Interface/ProcessObject.h>

#include <set>
#include <string>

// Some forward declarations
class QWidget;
class vtkRenderWindowInteractor;

namespace cpPlugins
{
  namespace Interface
  {
    /** \brief A complex pipeline
     */
    class cpPlugins_Interface_EXPORT Workspace
    {
    public:
      typedef cpPlugins::Interface::Interface     TPlugins;
      typedef cpPlugins::Interface::Object        TObject;
      typedef cpPlugins::Interface::ProcessObject TFilter;
      typedef cpPlugins::Interface::DataObject    TData;
      typedef TFilter::TParameters                TParameters;

      // Various types
      typedef std::set< std::string >               TStringContainer;
      typedef std::pair< std::string, std::string > TExposedPort;
      typedef std::map< std::string, TExposedPort > TExposedPorts;
      typedef std::set< vtkRenderWindowInteractor* > TInteractors;

      // Graph type
      typedef std::pair< std::string, std::string > TConnection;
      typedef
        cpExtensions::DataStructures::
        Graph< TObject::Pointer, TConnection, std::string > TGraph;

    public:
      Workspace( );
      virtual ~Workspace( );

      // Plugins management
      TPlugins* GetPlugins( );
      const TPlugins* GetPlugins( ) const;
      void SetPlugins( TPlugins* i );

      // Workspace IO
      std::string LoadWorkspace( const std::string& fname );
      std::string SaveWorkspace( const std::string& fname ) const;

      // Graph management
      TGraph* GetGraph( );
      const TGraph* GetGraph( ) const;

      void Clear( );
      void ClearConnections( );

      // Filter management
      TFilter* GetFilter( const std::string& name );
      const TFilter* GetFilter( const std::string& name ) const;
      bool HasFilter( const std::string& name ) const;
      bool CreateFilter( const std::string& filter, const std::string& name );
      bool RenameFilter(
        const std::string& old_name, const std::string& new_name
        );
      void RemoveFilter( const std::string& name );

      // Widgets management
      virtual const TInteractors& GetInteractors( ) const;
      virtual void AddInteractor( vtkRenderWindowInteractor* interactor );

      // Connection management
      bool Connect(
        const std::string& orig_filter, const std::string& dest_filter,
        const std::string& output_name, const std::string& input_name
        );
      bool Connect( TData* input_object, const std::string& exposed_port );
      void RemoveConnection(
        const std::string& dest_filter, const std::string& input_name
        );
      void RemoveConnection( const std::string& exposed_port );
      void RemoveConnections( const std::string& dest_filter );

      // Graph reduction
      bool Reduce( const std::string& name );
      void ExposeInputPort(
        const std::string& name,
        const std::string& filter, const std::string& filter_input
        );
      void ExposeOutputPort(
        const std::string& name,
        const std::string& filter, const std::string& filter_output
        );
      void HideInputPort( const std::string& name );
      void HideOutputPort( const std::string& name );

      bool RenameExposedInputPort(
        const std::string& old_name,
        const std::string& new_name
        );
      bool RenameExposedOutputPort(
        const std::string& old_name,
        const std::string& new_name
        );

      const TExposedPorts& GetExposedInputPorts( ) const;
      const TExposedPorts& GetExposedOutputPorts( ) const;

      TData* GetExposedInput( const std::string& name );
      const TData* GetExposedInput( const std::string& name ) const;
      TData* GetExposedOutput( const std::string& name );
      const TData* GetExposedOutput( const std::string& name ) const;

      // Pipeline execution
      std::string Execute( );
      std::string Execute( const std::string& name );

    protected:
      // Plugins interface
      TPlugins* m_Plugins;

      // Processing graph
      typename TGraph::Pointer m_Graph;
      TExposedPorts m_ExposedInputPorts;
      TExposedPorts m_ExposedOutputPorts;

      TInteractors m_Interactors;
    };

  } // ecapseman

} // ecapseman

#endif // __CPPLUGINS__INTERFACE__WORKSPACE__H__

// eof - $RCSfile$