FWSelectionManager.h

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#ifndef Fireworks_Core_FWSelectionManager_h
#define Fireworks_Core_FWSelectionManager_h
// -*- C++ -*-
//
// Package:     Core
// Class  :     FWSelectionManager
//
//
// Original Author:  Chris Jones
//         Created:  Fri Jan 18 14:40:45 EST 2008
// $Id: FWSelectionManager.h,v 1.7 2009/11/20 17:53:58 chrjones Exp $
//

// system include files
#include "sigc++/signal.h"
#include "sigc++/connection.h"
#include <set>
#include <vector>

// user include files
#include "Fireworks/Core/interface/FWModelId.h"

// forward declarations
class FWEventItem;
class FWModelChangeManager;

class FWSelectionManager
{
   //only an item can set the selection
   friend class FWEventItem;
public:
   FWSelectionManager(FWModelChangeManager* iCM);
   //virtual ~FWSelectionManager();

   // ---------- const member functions ---------------------
   const std::set<FWModelId>& selected() const;

   const std::set<FWEventItem*>& selectedItems() const;
   // ---------- static member functions --------------------

   // ---------- member functions ---------------------------
   void clearSelection();
   void clearItemSelection();
   void clearModelSelectionLeaveItem();

   sigc::signal<void, const FWSelectionManager&> selectionChanged_;
   sigc::signal<void, const FWSelectionManager&> itemSelectionChanged_;

private:
   void finishedAllSelections();
   void select(const FWModelId& iId);
   void unselect(const FWModelId& iId);
   void itemChanged(const FWEventItem*);

   void selectItem(FWEventItem*);
   void unselectItem(FWEventItem*);
   
   FWSelectionManager(const FWSelectionManager&);    // stop default

   const FWSelectionManager& operator=(const FWSelectionManager&);    // stop default

   // ---------- member data --------------------------------
   FWModelChangeManager* m_changeManager;
   std::set<FWModelId> m_selection;
   std::set<FWModelId> m_newSelection;
   bool m_wasChanged;
   std::vector<std::pair<int,sigc::connection> > m_itemConnectionCount;
   std::set<FWEventItem*> m_itemSelection;
};


#endif