SoProto.h

#ifndef COIN_SOPROTO_H
#define COIN_SOPROTO_H

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#include <Inventor/nodes/SoNode.h>

class SoProto;
class SoInput;
class SoProtoInstance;
class SoProtoP;

typedef SoProto * SoFetchExternProtoCB(SoInput * in,
                                       const SbString * urls,
                                       const int numurls,
                                       void * closure);

// We need to inherit SoNode to be able to insert the PROTO definition
// into the scene graph.
class COIN_DLL_API SoProto : public SoNode {
public:
  SoProto(const SbBool externproto = FALSE);

  static void setFetchExternProtoCallback(SoFetchExternProtoCB * cb,
                                          void * closure);

  virtual SoType getTypeId(void) const;
  static SoType getClassTypeId(void);

  static SoProto * findProto(const SbName & name);
  static void initClass(void);

  SoProtoInstance * createProtoInstance(void);
  void addISReference(SoNode * container,
                      const SbName & fieldname,
                      const SbName & interfacename);
  SbName findISReference(const SoFieldContainer * container,
                         const SbName & fieldname);

  void addReference(const SbName & name, SoBase * base);
  void removeReference(const SbName & name);
  SoBase * findReference(const SbName & name) const;

  void addRoute(const SbName & fromnode, const SbName & fromfield,
                const SbName & tonode, const SbName & tofield);

  SbName getProtoName(void) const;

  virtual SbBool readInstance(SoInput * input, unsigned short flags);
  virtual void write(SoWriteAction * action);

protected:

  virtual ~SoProto();
  virtual void destroy(void);

private:
  SbBool writeInterface(SoOutput * out);
  SbBool writeDefinition(SoWriteAction * action);

  SbBool readInterface(SoInput * in);
  SbBool readDefinition(SoInput * in);

  SbBool writeURLs(SoOutput * out);
  SoProtoP * pimpl;
  friend class SoProtoP;

  SbBool setupExtern(SoInput * in, SoProto * externproto);

  SoNode * createInstanceRoot(SoProtoInstance * inst) const;
  void connectISRefs(SoProtoInstance * inst, SoNode * src, SoNode * dst) const;
};

#endif // !COIN_SOPROTO_H