#ifndef __CPPLUGINS__WORKSPACE__H__
#define __CPPLUGINS__WORKSPACE__H__

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

#include <set>
#include <string>

// Some forward declarations
class QWidget;
class vtkRenderWindowInteractor;
namespace cpExtensions
{
  namespace QT
  {
#ifdef cpPlugins_QT4
    class SimpleMPRWidget;
#else // cpPlugins_QT4
    typedef char SimpleMPRWidget;
#endif // cpPlugins_QT4
  }
}

namespace cpPlugins
{
  /** \brief A complex pipeline
   */
  class cpPlugins_EXPORT Workspace
  {
  public:
    // Various types
    typedef std::set< std::string >               TStringContainer;
    typedef std::pair< std::string, std::string > TExposedPort;
    typedef std::map< std::string, TExposedPort > TExposedPorts;

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

    // Associated MPR
    typedef cpExtensions::QT::SimpleMPRWidget TMPRWidget;

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

    // Plugins management
    Interface* GetInterface( );
    const Interface* GetInterface( ) const;
    void SetInterface( Interface* 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
    ProcessObject* GetFilter( const std::string& name );
    const ProcessObject* GetFilter( const std::string& name ) const;
    bool HasFilter( const std::string& name ) const;
    ProcessObject* CreateFilter(
      const std::string& category,
      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 );
    void SetParameter( const std::string& name, const std::string& value );

    void SetPrintExecution( bool b );
    void PrintExecutionOn( );
    void PrintExecutionOff( );

    // Widgets management
    vtkRenderWindowInteractor* GetSingleInteractor( );
    const vtkRenderWindowInteractor* GetSingleInteractor( ) const;
    void SetSingleInteractor( vtkRenderWindowInteractor* interactor );

    TMPRWidget* GetMPRViewer( );
    const TMPRWidget* GetMPRViewer( ) const;
    void SetMPRViewer( TMPRWidget* wdg );

    // 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( const OutputPort& port, 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;

    OutputPort& GetExposedOutput( const std::string& name );
    const OutputPort& GetExposedOutput( const std::string& name ) const;

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

  protected:
    // Plugins interface
    Interface* m_Interface;
    bool       m_PrintExecution;

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

    vtkSmartPointer< vtkRenderWindowInteractor > m_SingleInteractor;
    TMPRWidget*                                  m_MPRViewer;
  };

} // ecapseman

#endif // __CPPLUGINS__WORKSPACE__H__

// eof - $RCSfile$