X3DBindableNode.h

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//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API is free software; you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation; either version 2 of the License, or
//    (at your option) any later version.
//
//    H3D API 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 General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __X3DBINDABLENODE_H__
#define __X3DBINDABLENODE_H__

#include <iostream>
#include <deque>
#include "X3DChildNode.h"
#include "SFBool.h"
#include "SFTime.h"

namespace H3D {

  class H3DAPI_API X3DBindableNode : public X3DChildNode {
  public:
    typedef std::deque< X3DBindableNode* > StackType;
    typedef map< string, StackType> StackMapType;

    struct H3DAPI_API SFSetBind : public SFBool {
      virtual inline void update() {
        SFBool::update();
        if( value )
          static_cast< X3DBindableNode * >( owner )->toStackTop();
        else 
          static_cast< X3DBindableNode * >( owner )->removeFromStack();
      }
      
      inline virtual void setValue( const bool &v, int id = 0 ) {
        SFBool::setValue( v, id );
        if( value )
          static_cast< X3DBindableNode * >( owner )->toStackTop();
        else 
          static_cast< X3DBindableNode * >( owner )->removeFromStack();
      }
    };

    
    X3DBindableNode( const string &_bindable_stack_name,
                     Inst< SFSetBind > _set_bind = 0,
                     Inst< SFNode    > _metadata = 0,
                     Inst< SFTime    > _bindTime = 0,
                     Inst< SFBool    > _isBound  = 0 );

    virtual inline ~X3DBindableNode() {
      removeFromStack();
    }

    static X3DBindableNode * getActive( const string &bindable_stack_name ) {
      if ( !stack[bindable_stack_name].empty() ) 
        return stack[bindable_stack_name].front();
      else
        return 0;
    }

    static inline const StackType &getStack
    ( const string &bindable_stack_name ) {
      return stack[ bindable_stack_name ];
    }

    virtual void toStackTop();

    virtual void removeFromStack();

    inline bool isStackTop() {
      const StackType &s = getStack( bindable_stack_name );
      if( s.size() > 0 ) return this == s.front();
      else return false;
    }

    auto_ptr< SFSetBind >  set_bind;
    
    auto_ptr< SFTime    >  bindTime;

    auto_ptr< SFBool    >  isBound;
    
    static H3DNodeDatabase database;

  protected:
    string bindable_stack_name;
    static StackMapType stack;
  };
}

#endif

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