---

aflibChain.h

Go to the documentation of this file.

/*
 * Copyright: (C) 1999-2001 Bruce W. Forsberg
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Lesser General Public
 *   License as published by the Free Software Foundation; either
 *   version 2.1 of the License, or any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   Lesser General Public License for more details.
 *
 *   You should have received a copy of the GNU Lesser General Public
 *   License along with this library; if not, write to the Free Software
 *   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
 *
 *   Bruce Forsberg  forsberg@tns.net
 *
 */


#ifndef _AFLIBCHAIN_H
#define _AFLIBCHAIN_H

#include <list>
#include <map>
#include "aflib.h"
#if __GNUC__ >= 3
using std::list;
using std::map;
#include <function.h>
#endif

class aflibAudio;
class aflibChainNode;


class aflibChain {

public:

   virtual
   ~aflibChain();

   const map<int, aflibAudio *, less<int> >&
   getParents() const;

   int
   addParent(aflibAudio& parent);

   void
   removeParent(int parent_id);

   void
   removeParent(aflibAudio& parent);

   bool
   getNodeProcessed() const;
 
   void
   setNodeProcessed(bool node);

   void
   dumpChain(bool check_env = TRUE);

protected:

   aflibChain();
   aflibChain(aflibAudio& parent);

   void
   replaceParent(
      aflibAudio& old_p,
      aflibAudio& new_p);

   // These are callback functions that derived classes can over ride to be
   // notified when a parent is destroyed or added. An Audio Editor object
   // for instance may have many inputs and if one is destroyed then it needs to
   // be notified so that it can rebuild its lists.
   virtual void
   parentWasDestroyed(int parent_id);

   virtual void
   parentWasAdded(int parent_id);

private:

   aflibChain(aflibChain& op);

   const aflibChain&
   operator=(const aflibChain& op);

   void
   insertIntoChain(
      aflibAudio& parent,
      aflibAudio& child);

   void
   insertIntoChain(
      aflibAudio& child);

   void
   removeFromChain(
      aflibAudio& child);


static list<aflibChainNode *>  _total_list;  
aflibChainNode *   _this_node;
bool               _processing_constructor;

};


#endif

---