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// ==============================
// ! Scriptability related code !
// ==============================
//
// nsScriptablePeer - xpconnect scriptable peer
//

#ifndef __nsScriptablePeer_h__
#define __nsScriptablePeer_h__

#include "nsIScriptablePluginSample.h"
#include "nsIClassInfo.h"
#include "nsIProgrammingLanguage.h"

class nsPluginInstance;

// We must implement nsIClassInfo because it signals the
// Mozilla Security Manager to allow calls from JavaScript.

class nsClassInfoMixin : public nsIClassInfo
{
  // These flags are used by the DOM and security systems to signal that 
  // JavaScript callers are allowed to call this object's scritable methods.
  NS_IMETHOD GetFlags(PRUint32 *aFlags)
    {*aFlags = nsIClassInfo::PLUGIN_OBJECT | nsIClassInfo::DOM_OBJECT;
     return NS_OK;}
  NS_IMETHOD GetImplementationLanguage(PRUint32 *aImplementationLanguage)
    {*aImplementationLanguage = nsIProgrammingLanguage::CPLUSPLUS;
     return NS_OK;}
  // The rest of the methods can safely return error codes...
  NS_IMETHOD GetInterfaces(PRUint32 *count, nsIID * **array)
    {return NS_ERROR_NOT_IMPLEMENTED;}
  NS_IMETHOD GetHelperForLanguage(PRUint32 language, nsISupports **_retval)
    {return NS_ERROR_NOT_IMPLEMENTED;}
  NS_IMETHOD GetContractID(char * *aContractID)
    {return NS_ERROR_NOT_IMPLEMENTED;}
  NS_IMETHOD GetClassDescription(char * *aClassDescription)
    {return NS_ERROR_NOT_IMPLEMENTED;}
  NS_IMETHOD GetClassID(nsCID * *aClassID)
    {return NS_ERROR_NOT_IMPLEMENTED;}
  NS_IMETHOD GetClassIDNoAlloc(nsCID *aClassIDNoAlloc)
    {return NS_ERROR_NOT_IMPLEMENTED;}
};

class nsScriptablePeer : public nsIScriptablePluginSample,
                         public nsClassInfoMixin
{
public:
  nsScriptablePeer(nsPluginInstance* plugin);
  virtual ~nsScriptablePeer();

public:
  // methods from nsISupports
  NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr); 
  NS_IMETHOD_(nsrefcnt) AddRef(); 
  NS_IMETHOD_(nsrefcnt) Release(); 

protected: 
  nsrefcnt mRefCnt;  

public:
  // native methods callable from JavaScript
  NS_DECL_NSISCRIPTABLEPLUGINSAMPLE

  void SetInstance(nsPluginInstance* plugin);

protected:
  nsPluginInstance* mPlugin;
};

#endif
