/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** 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):
 *   Pierre Phaneuf <pp@ludusdesign.com>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either of 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
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * 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 __nsProxyEventPrivate_h_
#define __nsProxyEventPrivate_h_

#include "nscore.h"
#include "nsISupports.h"
#include "nsIFactory.h"
#include "nsHashtable.h"

#include "plevent.h"
#include "xptcall.h"    // defines nsXPTCVariant
#include "nsIEventQueue.h"

#include "nsProxyEvent.h"
#include "nsIProxyObjectManager.h"

class nsProxyEventObject;
class nsProxyEventClass;

#define NS_PROXYEVENT_CLASS_IID                  \
{ 0xeea90d42,                                    \
  0xb059,                                        \
  0x11d2,                                        \
 {0x91, 0x5e, 0xc1, 0x2b, 0x69, 0x6c, 0x93, 0x33}\
} 

#define NS_PROXYEVENT_IDENTITY_CLASS_IID \
{ 0xeea90d45, 0xb059, 0x11d2,                       \
  { 0x91, 0x5e, 0xc1, 0x2b, 0x69, 0x6c, 0x93, 0x33 } }


#define NS_PROXYEVENT_OBJECT_IID \
{ 0xec373590, 0x9164, 0x11d3,    \
{0x8c, 0x73, 0x00, 0x00, 0x64, 0x65, 0x73, 0x74} }


class nsProxyEventClass : public nsISupports
{
public:
    NS_DECL_ISUPPORTS
    
    NS_DEFINE_STATIC_IID_ACCESSOR(NS_PROXYEVENT_CLASS_IID)
    static nsProxyEventClass* GetNewOrUsedClass(REFNSIID aIID);
    
    NS_IMETHOD DelegatedQueryInterface( nsProxyEventObject* self, 
                                        REFNSIID aIID, 
                                        void** aInstancePtr);


    nsIInterfaceInfo*        GetInterfaceInfo() const {return mInfo;}
    const nsIID&             GetProxiedIID()    const {return mIID; }
protected:
    nsProxyEventClass();
    nsProxyEventClass(REFNSIID aIID, nsIInterfaceInfo* aInfo);
    
private:
    ~nsProxyEventClass();

    nsIID                      mIID;
    nsCOMPtr<nsIInterfaceInfo> mInfo;
    uint32*                    mDescriptors;

    nsresult          CallQueryInterfaceOnProxy(nsProxyEventObject* self, 
                                                REFNSIID aIID, 
                                                nsProxyEventObject** aInstancePtr);
};



class nsProxyEventObject : public nsXPTCStubBase
{
public:

    NS_DECL_ISUPPORTS

    NS_DEFINE_STATIC_IID_ACCESSOR(NS_PROXYEVENT_OBJECT_IID)
    
    static nsProxyEventObject* GetNewOrUsedProxy(nsIEventQueue *destQueue,
                                                 PRInt32 proxyType,
                                                 nsISupports *aObj,
                                                 REFNSIID aIID);
    
    
    NS_IMETHOD GetInterfaceInfo(nsIInterfaceInfo** info);

    // call this method and return result
    NS_IMETHOD CallMethod(PRUint16 methodIndex, const nsXPTMethodInfo* info, nsXPTCMiniVariant* params);


    nsProxyEventClass*    GetClass()           const { return mClass; }
    nsIEventQueue*        GetQueue()           const { return (mProxyObject ? mProxyObject->GetQueue()     : nsnull);}
    nsISupports*          GetRealObject()      const { return (mProxyObject ? mProxyObject->GetRealObject(): nsnull);}
    PRInt32               GetProxyType()       const { return (mProxyObject ? mProxyObject->GetProxyType() : nsnull);} 

    nsProxyEventObject();
    nsProxyEventObject(nsIEventQueue *destQueue,
                       PRInt32 proxyType,
                       nsISupports* aObj,
                       nsProxyEventClass* aClass,
                       nsProxyEventObject* root,
                       nsIEventQueueService* eventQService);
    
    nsProxyEventObject*   LockedFind(REFNSIID aIID);

#ifdef DEBUG_xpcom_proxy
    void DebugDump(const char * message, PRUint32 hashKey);
#endif

private:
    ~nsProxyEventObject();

protected:
    void LockedRemoveProxy();

protected:
    nsCOMPtr<nsProxyEventClass> mClass;
    nsRefPtr<nsProxyObject>     mProxyObject;

    // Owning reference...
    nsProxyEventObject *mRoot;

    // Weak reference...
    nsProxyEventObject *mNext;
};




////////////////////////////////////////////////////////////////////////////////
// nsProxyObjectManager
////////////////////////////////////////////////////////////////////////////////

class nsProxyObjectManager: public nsIProxyObjectManager
{
public:

    NS_DECL_ISUPPORTS
    NS_DECL_NSIPROXYOBJECTMANAGER
        
    
    static NS_METHOD Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
    
    nsProxyObjectManager();
    
    static nsProxyObjectManager *GetInstance();
    static PRBool IsManagerShutdown();

    static void Shutdown();
    
    nsHashtable* GetRealObjectToProxyObjectMap() { return &mProxyObjectMap;}   
    nsHashtable* GetIIDToProxyClassMap() { return &mProxyClassMap; }   

    PRMonitor*   GetMonitor() const { return mProxyCreationMonitor; }
    
private:
    ~nsProxyObjectManager();

    static nsProxyObjectManager* mInstance;
    nsHashtable  mProxyObjectMap;
    nsHashtable  mProxyClassMap;
    PRMonitor   *mProxyCreationMonitor;
};


#endif