SoUnknownNode.h

/*=======================================================================
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**=======================================================================*/
/*=======================================================================
** Author      : Dave Immel (MMM yyyy)
** Modified by : Paul S. Strauss (MMM yyyy)
** Modified by : Gavin Bell (MMM yyyy)
**=======================================================================*/
/*=======================================================================
 *** THE CONTENT OF THIS WORK IS PROPRIETARY TO FEI S.A.S, (FEI S.A.S.),            ***
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 ***                        BORDEAUX, FRANCE                                        ***
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**=======================================================================*/
/*=======================================================================
** Modified by : VSG (MMM YYYY)
**=======================================================================*/
 
 
#ifndef  _SO_UNKNOWN_NODE_
#define  _SO_UNKNOWN_NODE_
 
#include <Inventor/fields/SoFieldData.h>
#include <Inventor/nodes/SoGroup.h>
#include <Inventor/nodes/SoSubNode.h>
 
class SoSFNode;
class SoMFString;
class SoChildList;

//
//  Class: SoUnknownNode
//
//  The Unknown Node! This node is created during file reading when a
//  node is read that is unrecognized by Inventor and a DSO cannot be found
//  for it.  Note that even though it is derived from SoGroup, we lie
//  and tell SoType that it is derived from SoNode.  This, along with
//  the fact that users are not shipped this header file (so they
//  can't call SoGroup methods directly), has the effect of making the
//  normally public children hidden.
//
 
{
 
    SO_NODE_HEADER(SoUnknownNode);
 
  public:
    // Constructor
    SoUnknownNode();
 
  private:
    virtual void    write(SoWriteAction *action);
 
  private:
    static void     initClass();
    static void     exitClass();
    void                setClassName(const SbString& name);
 
  private:
    // Reads field type information, fields, and children.
    virtual SbBool    readInstance(SoInput *in, unsigned short flags);
 
    // Override search so we don't search alternateRep
    virtual void    search(SoSearchAction *action);
 
    // Returns file format name
    virtual const char* getFileFormatName() const;
 
    // Recursively adds this node and all nodes under it to the copy
    // dictionary. Returns the copy of this node.
    virtual SoNode *  addToCopyDict() const;
 
    // Copies the contents of the given node into this instance
    virtual void    copyContents(const SoFieldContainer *fromFC,
                     SbBool copyConnections);
 
  private:
    // Used during reading to create an alternateRep from an isA
    // specification.
    void        createFromIsA(SoMFString *isA);
 
    // Per-instance field data
    SoFieldData     *instanceFieldData;
 
    // Real class name
    SbString className;
 
    // List of hidden children.
    SoChildList*        hiddenChildren;
  
    // Destructor
    virtual ~SoUnknownNode();
 
    // Will be true if read in with children
    SbBool hasChildren;
 
    //force group alternate representation
    static bool s_forceGroupAlternateRep;
};
 
#endif /* _SO_UNKNOWN_NODE_ */