FWModelChangeManager.h

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#ifndef Fireworks_Core_FWModelChangeManager_h
#define Fireworks_Core_FWModelChangeManager_h
// -*- C++ -*-
//
// Package:     Core
// Class  :     FWModelChangeManager
//
//
// Original Author:  Chris Jones
//         Created:  Thu Jan 17 17:37:49 EST 2008
//
 
// system include files
#include "sigc++/signal.h"
#include <set>
 
// user include files
#include "Fireworks/Core/interface/FWModelId.h"
#include "Fireworks/Core/interface/FWModelChangeSignal.h"
#include "Fireworks/Core/interface/FWItemChangeSignal.h"
 
// forward declarations
class FWEventItem;
 
class FWModelChangeManager {
public:
  FWModelChangeManager();
  virtual ~FWModelChangeManager();
 
  // ---------- const member functions ---------------------
 
  // ---------- static member functions --------------------
 
  // ---------- member functions ---------------------------
 
  void beginChanges();
  void changed(const FWModelId&);
  void changed(const FWEventItem*);
  void endChanges();
 
  sigc::signal<void> changeSignalsAreComing_;
  sigc::signal<void> changeSignalsAreDone_;
 
  void newItemSlot(FWEventItem*);
  void itemsGoingToBeClearedSlot(void);
 
private:
  FWModelChangeManager(const FWModelChangeManager&) = delete;  // stop default
 
  const FWModelChangeManager& operator=(const FWModelChangeManager&) = delete;  // stop default
 
  // ---------- member data --------------------------------
  unsigned int m_depth;
  std::vector<FWModelIds> m_changes;
  std::set<const FWEventItem*> m_itemChanges;
  std::vector<FWModelChangeSignal> m_changeSignals;
  std::vector<FWItemChangeSignal> m_itemChangeSignals;
};
 
class FWChangeSentry {
public:
  FWChangeSentry(FWModelChangeManager& iM) : m_manager(&iM) { m_manager->beginChanges(); }
  ~FWChangeSentry() { m_manager->endChanges(); }
 
private:
  FWModelChangeManager* m_manager;
};
 
#endif