/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
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 * decision by deleting the provisions above and replace them with the notice
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 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsNPAPIPlugin_h_
#define nsNPAPIPlugin_h_

#include "nsIPlugin.h"
#ifdef OJI
#include "nsIPluginOld.h"
#include "nsIJVMPlugin.h"
#include "nsIJVMConsole.h"
#endif
#include "prlink.h"
#include "npfunctions.h"
#include "nsPluginHost.h"

#include "mozilla/PluginLibrary.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 OS/2.
 */
#ifdef XP_OS2
#define NP_CALLBACK _System
#else
#define NP_CALLBACK
#endif

#if defined(XP_WIN)
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (__stdcall * _name)
#elif defined(XP_OS2)
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (_System * _name)
#else
#define NS_NPAPIPLUGIN_CALLBACK(_type, _name) _type (* _name)
#endif

typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_GETENTRYPOINTS) (NPPluginFuncs* pCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGININIT) (const NPNetscapeFuncs* pCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINUNIXINIT) (const NPNetscapeFuncs* pCallbacks, NPPluginFuncs* fCallbacks);
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_PLUGINSHUTDOWN) (void);
#ifdef XP_MACOSX
typedef NS_NPAPIPLUGIN_CALLBACK(NPError, NP_MAIN) (NPNetscapeFuncs* nCallbacks, NPPluginFuncs* pCallbacks, NPP_ShutdownProcPtr* unloadProcPtr);
#endif

class nsNPAPIPlugin : public nsIPlugin
#ifdef OJI
                     ,public nsIPluginOld,
                      public nsIJVMPlugin,
                      public nsIJVMConsole
#endif
{
private:
  typedef mozilla::PluginLibrary PluginLibrary;

public:
#ifdef OJI
  nsNPAPIPlugin(nsIPluginOld *aShadow);
#endif
  nsNPAPIPlugin(NPPluginFuncs* callbacks,
                PluginLibrary* aLibrary /*assume ownership*/);
  virtual ~nsNPAPIPlugin();

  NS_DECL_ISUPPORTS
  NS_DECL_NSIPLUGIN

#ifdef OJI
  NS_DECL_NSIFACTORY

  // nsIPluginOld methods not declared elsewhere
  NS_IMETHOD CreatePluginInstance(nsISupports *aOuter, REFNSIID aIID,
                                  const char *aPluginMIMEType, void **aResult);

  // nsIJVMPlugin methods
  NS_IMETHOD AddToClassPath(const char* dirPath);
  NS_IMETHOD RemoveFromClassPath(const char* dirPath);
  NS_IMETHOD GetClassPath(const char* *result);
  NS_IMETHOD GetJavaWrapper(JNIEnv* jenv, jint obj, jobject *jobj);
  NS_IMETHOD CreateSecureEnv(JNIEnv* proxyEnv, nsISecureEnv* *outSecureEnv);
  NS_IMETHOD SpendTime(PRUint32 timeMillis);
  NS_IMETHOD UnwrapJavaWrapper(JNIEnv* jenv, jobject jobj, jint* obj);

  // nsIJVMConsole methods
  NS_IMETHOD Show(void);
  NS_IMETHOD Hide(void);
  NS_IMETHOD IsVisible(PRBool *result);
  NS_IMETHOD Print(const char* msg, const char* encodingName = NULL);
  
  // Helper methods
  void SetShadow(nsIPluginOld *shadow);
  nsIPluginOld *GetShadow();
#endif

  // Constructs and initializes an nsNPAPIPlugin object. A NULL file path
  // will prevent this from calling NP_Initialize.
  static nsresult CreatePlugin(const char* aFilePath, PRLibrary* aLibrary,
                               nsIPlugin** aResult);
#ifdef XP_MACOSX
  void SetPluginRefNum(short aRefNum);
#endif

#ifdef MOZ_IPC
  // The IPC mechanism notifies the nsNPAPIPlugin if the plugin
  // crashes and is no longer usable. pluginDumpID/browserDumpID are
  // the IDs of respective minidumps that were written, or empty if no
  // minidump was written.
  void PluginCrashed(const nsAString& pluginDumpID,
                     const nsAString& browserDumpID);
#endif

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

#ifdef XP_MACOSX
  short fPluginRefNum;
#endif

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

  // Browser-side callbacks that the plugin calls.
  static NPNetscapeFuncs CALLBACKS;

#ifdef OJI
  nsIPluginOld *mShadow; // Strong
#endif
};

namespace mozilla {
namespace plugins {
namespace parent {

NPObject* NP_CALLBACK
_getwindowobject(NPP npp);

NPObject* NP_CALLBACK
_getpluginelement(NPP npp);

NPIdentifier NP_CALLBACK
_getstringidentifier(const NPUTF8* name);

void NP_CALLBACK
_getstringidentifiers(const NPUTF8** names, int32_t nameCount,
                      NPIdentifier *identifiers);

bool NP_CALLBACK
_identifierisstring(NPIdentifier identifiers);

NPIdentifier NP_CALLBACK
_getintidentifier(int32_t intid);

NPUTF8* NP_CALLBACK
_utf8fromidentifier(NPIdentifier identifier);

int32_t NP_CALLBACK
_intfromidentifier(NPIdentifier identifier);

NPObject* NP_CALLBACK
_createobject(NPP npp, NPClass* aClass);

NPObject* NP_CALLBACK
_retainobject(NPObject* npobj);

void NP_CALLBACK
_releaseobject(NPObject* npobj);

bool NP_CALLBACK
_invoke(NPP npp, NPObject* npobj, NPIdentifier method, const NPVariant *args,
        uint32_t argCount, NPVariant *result);

bool NP_CALLBACK
_invokeDefault(NPP npp, NPObject* npobj, const NPVariant *args,
               uint32_t argCount, NPVariant *result);

bool NP_CALLBACK
_evaluate(NPP npp, NPObject* npobj, NPString *script, NPVariant *result);

bool NP_CALLBACK
_getproperty(NPP npp, NPObject* npobj, NPIdentifier property,
             NPVariant *result);

bool NP_CALLBACK
_setproperty(NPP npp, NPObject* npobj, NPIdentifier property,
             const NPVariant *value);

bool NP_CALLBACK
_removeproperty(NPP npp, NPObject* npobj, NPIdentifier property);

bool NP_CALLBACK
_hasproperty(NPP npp, NPObject* npobj, NPIdentifier propertyName);

bool NP_CALLBACK
_hasmethod(NPP npp, NPObject* npobj, NPIdentifier methodName);

bool NP_CALLBACK
_enumerate(NPP npp, NPObject *npobj, NPIdentifier **identifier,
           uint32_t *count);

bool NP_CALLBACK
_construct(NPP npp, NPObject* npobj, const NPVariant *args,
           uint32_t argCount, NPVariant *result);

void NP_CALLBACK
_releasevariantvalue(NPVariant *variant);

void NP_CALLBACK
_setexception(NPObject* npobj, const NPUTF8 *message);

void NP_CALLBACK
_pushpopupsenabledstate(NPP npp, NPBool enabled);

void NP_CALLBACK
_poppopupsenabledstate(NPP npp);

typedef void(*PluginThreadCallback)(void *);
void NP_CALLBACK
_pluginthreadasynccall(NPP instance, PluginThreadCallback func,
                       void *userData);

NPError NP_CALLBACK
_getvalueforurl(NPP instance, NPNURLVariable variable, const char *url,
                char **value, uint32_t *len);

NPError NP_CALLBACK
_setvalueforurl(NPP instance, NPNURLVariable variable, const char *url,
                const char *value, uint32_t len);

NPError NP_CALLBACK
_getauthenticationinfo(NPP instance, const char *protocol, const char *host,
                       int32_t port, const char *scheme, const char *realm,
                       char **username, uint32_t *ulen, char **password,
                       uint32_t *plen);

typedef void(*PluginTimerFunc)(NPP npp, uint32_t timerID);

uint32_t NP_CALLBACK
_scheduletimer(NPP instance, uint32_t interval, NPBool repeat, PluginTimerFunc timerFunc);

void NP_CALLBACK
_unscheduletimer(NPP instance, uint32_t timerID);

NPError NP_CALLBACK
_requestread(NPStream *pstream, NPByteRange *rangeList);

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

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

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

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

NPError NP_CALLBACK
_posturlnotify(NPP npp, const char* relativeURL, const char *target,
               uint32_t len, const char *buf, NPBool file, void* notifyData);

NPError NP_CALLBACK
_posturl(NPP npp, const char* relativeURL, const char *target, uint32_t len,
            const char *buf, NPBool file);

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

int32_t NP_CALLBACK
_write(NPP npp, NPStream *pstream, int32_t len, void *buffer);

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

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

void NP_CALLBACK
_memfree (void *ptr);

uint32_t NP_CALLBACK
_memflush(uint32_t size);

void NP_CALLBACK
_reloadplugins(NPBool reloadPages);

void NP_CALLBACK
_invalidaterect(NPP npp, NPRect *invalidRect);

void NP_CALLBACK
_invalidateregion(NPP npp, NPRegion invalidRegion);

void NP_CALLBACK
_forceredraw(NPP npp);

const char* NP_CALLBACK
_useragent(NPP npp);

void* NP_CALLBACK
_memalloc (uint32_t size);

// Deprecated entry points for the old Java plugin.
void* NP_CALLBACK /* OJI type: JRIEnv* */
_getJavaEnv(void);

void* NP_CALLBACK /* OJI type: jref */
_getJavaPeer(NPP npp);

} /* namespace parent */
} /* namespace plugins */
} /* namespace mozilla */

const char *
PeekException();

void
PopException();

void
OnPluginDestroy(NPP instance);

void
OnShutdown();

void
EnterAsyncPluginThreadCallLock();
void
ExitAsyncPluginThreadCallLock();

class NPPStack
{
public:
  static NPP Peek()
  {
    return sCurrentNPP;
  }

protected:
  static NPP sCurrentNPP;
};

// XXXjst: The NPPAutoPusher stack is a bit redundant now that
// PluginDestructionGuard exists, and could thus be replaced by code
// that uses the PluginDestructionGuard list of plugins on the
// stack. But they're not identical, and to minimize code changes
// we're keeping both for the moment, and making NPPAutoPusher inherit
// the PluginDestructionGuard class to avoid having to keep two
// separate objects on the stack since we always want a
// PluginDestructionGuard where we use an NPPAutoPusher.

class NPPAutoPusher : public NPPStack,
                      protected PluginDestructionGuard
{
public:
  NPPAutoPusher(NPP npp)
    : PluginDestructionGuard(npp),
      mOldNPP(sCurrentNPP)
  {
    NS_ASSERTION(npp, "Uh, null npp passed to NPPAutoPusher!");

    sCurrentNPP = npp;
  }

  ~NPPAutoPusher()
  {
    sCurrentNPP = mOldNPP;
  }

private:
  NPP mOldNPP;
};

class NPPExceptionAutoHolder
{
public:
  NPPExceptionAutoHolder();
  ~NPPExceptionAutoHolder();

protected:
  char *mOldException;
};

#endif // nsNPAPIPlugin_h_
