/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape Public License
 * Version 1.0 (the "NPL"); you may not use this file except in
 * compliance with the NPL.  You may obtain a copy of the NPL at
 * http://www.mozilla.org/NPL/
 *
 * Software distributed under the NPL is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
 * for the specific language governing rights and limitations under the
 * NPL.
 *
 * The Initial Developer of this code under the NPL is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation.  All Rights
 * Reserved.
 */

#ifndef ns4xPlugin_h__
#define ns4xPlugin_h__

#include "nsplugin.h"
#include "prlink.h"  // for PRLibrary
#include "npupp.h"
#include "nsPluginHostImpl.h"

////////////////////////////////////////////////////////////////////////

/*
 * Use this macro before each exported function
 * (between the return address and the function
 * itself), to ensure that the function has the
 * right calling conventions on Win16.
 */

#define NP_EXPORT

////////////////////////////////////////////////////////////////////////

// XXX These are defined in platform specific FE directories right now :-/

#if defined(XP_PC) || defined(XP_UNIX) || defined(XP_BEOS)
typedef NS_CALLBACK_(NPError, NP_GETENTRYPOINTS) (NPPluginFuncs* pCallbacks);
typedef NS_CALLBACK_(NPError, NP_PLUGININIT) (const NPNetscapeFuncs* pCallbacks);
typedef NS_CALLBACK_(NPError, NP_PLUGINUNIXINIT) (const NPNetscapeFuncs* pCallbacks,NPPluginFuncs* fCallbacks);
typedef NS_CALLBACK_(NPError, NP_PLUGINSHUTDOWN) (void);
#endif

#ifdef XP_MAC
typedef NS_CALLBACK_(NPError, NP_PLUGINSHUTDOWN) (void);
typedef NS_CALLBACK_(NPError, NP_MAIN) (NPNetscapeFuncs* nCallbacks, NPPluginFuncs* pCallbacks, NPP_ShutdownUPP* unloadUpp);
#endif

class nsIServiceManager;
class nsIAllocator;

////////////////////////////////////////////////////////////////////////

/**
 * A 5.0 wrapper for a 4.x style plugin.
 */

class ns4xPlugin : public nsIPlugin
{
public:

  ns4xPlugin(NPPluginFuncs* callbacks, NP_PLUGINSHUTDOWN aShutdown, nsIServiceManager* serviceMgr);
  virtual ~ns4xPlugin(void);

  NS_DECL_ISUPPORTS

  //nsIFactory interface

  NS_IMETHOD CreateInstance(nsISupports *aOuter,
                            REFNSIID aIID,
                            void **aResult);

  NS_IMETHOD LockFactory(PRBool aLock);

  //nsIPlugin interface

  /**
   * Creates a new plugin instance, based on a MIME type. This
   * allows different impelementations to be created depending on
   * the specified MIME type.
   */
  NS_IMETHOD CreatePluginInstance(nsISupports *aOuter, REFNSIID aIID, 
                                  const char* aPluginMIMEType,
                                  void **aResult);
  
  NS_IMETHOD
  Initialize(void);

  NS_IMETHOD
  Shutdown(void);

  NS_IMETHOD
  GetMIMEDescription(const char* *resultingDesc);

  NS_IMETHOD
  GetValue(nsPluginVariable variable, void *value);

  ////////////////////////////////////////////////////////////////////
  // ns4xPlugin-specific methods

  /**
   * A static factory method for constructing 4.x plugins. Constructs
   * and initializes an ns4xPlugin object, and returns it in
   * <b>result</b>.
   */
   
  static nsresult
  CreatePlugin(nsPluginTag* pluginTag, nsIServiceManager* serviceMgr);

#ifdef XP_MAC
  void
  SetPluginRefNum(short aRefNum);
#endif

protected:
  /**
   * Ensures that the static CALLBACKS is properly initialized
   */
  static void CheckClassInitialized(void);

  ////////////////////////////////////////////////////////////////////////
  // Static stub functions that are exported to the 4.x plugin as entry
  // points via the CALLBACKS variable.
  //
  static NPError NP_EXPORT
  _requestread(NPStream *pstream, NPByteRange *rangeList);

  static NPError NP_EXPORT
  _geturlnotify(NPP npp, const char* relativeURL, const char* target, void* notifyData);

  static NPError NP_EXPORT
  _getvalue(NPP npp, NPNVariable variable, void *r_value);

  static NPError NP_EXPORT
  _setvalue(NPP npp, NPPVariable variable, void *r_value);

  static NPError NP_EXPORT
  _geturl(NPP npp, const char* relativeURL, const char* target);

  static NPError NP_EXPORT
  _posturlnotify(NPP npp, const char* relativeURL, const char *target,
                    uint32 len, const char *buf, NPBool file, void* notifyData);

  static NPError NP_EXPORT
  _posturl(NPP npp, const char* relativeURL, const char *target, uint32 len,
              const char *buf, NPBool file);

  static NPError NP_EXPORT
  _newstream(NPP npp, NPMIMEType type, const char* window, NPStream** pstream);

  static int32 NP_EXPORT
  _write(NPP npp, NPStream *pstream, int32 len, void *buffer);

  static NPError NP_EXPORT
  _destroystream(NPP npp, NPStream *pstream, NPError reason);

  static void NP_EXPORT
  _status(NPP npp, const char *message);

#if 0

  static void NP_EXPORT
  _registerwindow(NPP npp, void* window);

  static void NP_EXPORT
  _unregisterwindow(NPP npp, void* window);

  static int16 NP_EXPORT
  _allocateMenuID(NPP npp, NPBool isSubmenu);

#endif

  static void NP_EXPORT
  _memfree (void *ptr);

  static uint32 NP_EXPORT
  _memflush(uint32 size);

  static void NP_EXPORT
  _reloadplugins(NPBool reloadPages);

  static void NP_EXPORT
  _invalidaterect(NPP npp, NPRect *invalidRect);

  static void NP_EXPORT
  _invalidateregion(NPP npp, NPRegion invalidRegion);

  static void NP_EXPORT
  _forceredraw(NPP npp);

  ////////////////////////////////////////////////////////////////////////
  // Anything that returns a pointer needs to be _HERE_ for 68K Mac to
  // work.
  //

#if defined(XP_MAC) && !defined(powerc)
#pragma pointers_in_D0
#endif

  static const char* NP_EXPORT
  _useragent(NPP npp);

  static void* NP_EXPORT
  _memalloc (uint32 size);

  static JRIEnv* NP_EXPORT
  _getJavaEnv(void);

#if 1

  static jref NP_EXPORT
  _getJavaPeer(NPP npp);

  static java_lang_Class* NP_EXPORT
  _getJavaClass(void* handle);

#endif

#if defined(XP_MAC) && !defined(powerc)
#pragma pointers_in_A0
#endif

#ifdef XP_MAC
  short fPluginRefNum;
#endif

  /**
   * The plugin-side callbacks that the browser calls. One set of
   * plugin callbacks for each plugin.
   */
  NPPluginFuncs fCallbacks;

  NP_PLUGINSHUTDOWN fShutdownEntry;

  /**
   * The browser-side callbacks that a 4.x-style plugin calls.
   */
  static NPNetscapeFuncs CALLBACKS;

  static nsIPluginManager   *mPluginManager;
  static nsIAllocator       *mMalloc;
};

#endif // ns4xPlugin_h__