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- /* -*- 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):
- *
- * 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 __nsProxyEvent_h_
- #define __nsProxyEvent_h_
-
- #include "nsCOMPtr.h"
- #include "nsAutoPtr.h"
- #include "nscore.h"
- #include "nsISupports.h"
- #include "nsIFactory.h"
-
- #include "nsIEventQueueService.h"
- #include "nsIEventQueue.h"
- #include "plevent.h"
- #include "prtypes.h"
- #include "xptcall.h"
- #include "xptinfo.h"
-
- class nsProxyObjectCallInfo;
-
- #define PROXY_SYNC 0x0001 // acts just like a function call.
- #define PROXY_ASYNC 0x0002 // fire and forget. This will return immediately and you will lose all return information.
- #define PROXY_ALWAYS 0x0004 // ignore check to see if the eventQ is on the same thread as the caller, and alway return a proxied object.
-
- //#define AUTOPROXIFICATION
-
- // WARNING about PROXY_ASYNC:
- //
- // If the calling thread goes away, any function which accesses the calling stack
- // will blow up.
- //
- // example:
- //
- // myFoo->bar(&x)
- //
- // ... thread goes away ...
- //
- // bar(PRInt32 *x)
- // {
- // *x = 0; <----- You will blow up here.
- //
- //
- // So what gets saved?
- //
- // You can safely pass base types by value. You can also pass interface pointers.
- // I will make sure that the interface pointers are addrefed while they are being
- // proxied. You can also pass string and wstring. These I will copy and free.
- //
- // I do **NOT** copy arrays or strings with size. If you are using these either
- // change your interface, or contact me about this feature request.
-
-
-
-
- class nsProxyObject
- {
- public:
- nsProxyObject(nsIEventQueue *destQueue, PRInt32 proxyType, nsISupports *realObject);
- nsProxyObject(nsIEventQueue *destQueue, PRInt32 proxyType, const nsCID &aClass, nsISupports *aDelegate, const nsIID &aIID);
-
- void AddRef();
- void Release();
-
- ~nsProxyObject();
-
- nsresult Post( PRUint32 methodIndex,
- nsXPTMethodInfo * info,
- nsXPTCMiniVariant * params,
- nsIInterfaceInfo * interfaceInfo);
-
- nsresult PostAndWait(nsProxyObjectCallInfo *proxyInfo);
- nsISupports* GetRealObject() const { return mRealObject; }
- nsIEventQueue* GetQueue() const { return mDestQueue; }
- PRInt32 GetProxyType() const { return mProxyType; }
-
- friend class nsProxyEventObject;
- private:
-
- nsAutoRefCnt mRefCnt;
-
- PRInt32 mProxyType;
-
- nsCOMPtr<nsIEventQueue> mDestQueue; /* destination queue */
-
- nsCOMPtr<nsISupports> mRealObject; /* the non-proxy object that this event is referring to.
- This is a strong ref. */
- nsCOMPtr<nsIEventQueueService> mEventQService;
-
- nsresult convertMiniVariantToVariant(nsXPTMethodInfo * methodInfo,
- nsXPTCMiniVariant * params,
- nsXPTCVariant **fullParam,
- uint8 *paramCount);
-
- };
-
-
- class nsProxyObjectCallInfo
- {
- public:
-
- nsProxyObjectCallInfo(nsProxyObject* owner,
- nsXPTMethodInfo *methodInfo,
- PRUint32 methodIndex,
- nsXPTCVariant* parameterList,
- PRUint32 parameterCount,
- PLEvent *event);
-
- ~nsProxyObjectCallInfo();
-
- PRUint32 GetMethodIndex() const { return mMethodIndex; }
- nsXPTCVariant* GetParameterList() const { return mParameterList; }
- PRUint32 GetParameterCount() const { return mParameterCount; }
- PLEvent* GetPLEvent() const { return mEvent; }
- nsresult GetResult() const { return mResult; }
- nsProxyObject* GetProxyObject() const { return mOwner; }
-
- PRBool GetCompleted();
- void SetCompleted();
- void PostCompleted();
-
- void SetResult(nsresult rv) {mResult = rv; }
-
- nsIEventQueue* GetCallersQueue();
- void SetCallersQueue(nsIEventQueue* queue);
-
- private:
-
- nsresult mResult; /* this is the return result of the called function */
- nsXPTMethodInfo *mMethodInfo;
- PRUint32 mMethodIndex; /* which method to be called? */
- nsXPTCVariant *mParameterList; /* marshalled in parameter buffer */
- PRUint32 mParameterCount; /* number of params */
- PLEvent *mEvent; /* the current plevent */
- PRInt32 mCompleted; /* is true when the method has been called. */
-
- nsCOMPtr<nsIEventQueue> mCallersEventQ; /* this is the eventQ that we must post a message back to
- when we are done invoking the method (only PROXY_SYNC).
- */
-
- nsRefPtr<nsProxyObject> mOwner; /* this is the strong referenced nsProxyObject */
-
- void RefCountInInterfacePointers(PRBool addRef);
- void CopyStrings(PRBool copy);
-
- };
-
-
- #endif
-