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Diffstat (limited to 'src/libs/xpcom18a4/xpcom/proxy/public/nsProxiedService.h')
| -rw-r--r-- | src/libs/xpcom18a4/xpcom/proxy/public/nsProxiedService.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/proxy/public/nsProxiedService.h b/src/libs/xpcom18a4/xpcom/proxy/public/nsProxiedService.h new file mode 100644 index 00000000..3a39ade1 --- /dev/null +++ b/src/libs/xpcom18a4/xpcom/proxy/public/nsProxiedService.h @@ -0,0 +1,164 @@ +/* -*- 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 __nsProxiedServiceManager_h_ +#define __nsProxiedServiceManager_h_ + +#include "nsIServiceManager.h" +#include "nsIProxyObjectManager.h" + +//////////////////////////////////////////////////////////////////////////////// +// NS_WITH_PROXIED_SERVICE: macro to make using services that need to be proxied +// before using them easier. +// Now you can replace this: +// { +// nsresult rv; +// nsCOMPtr<nsIMyService> pIMyService = +// do_GetService(kMyServiceCID, &rv); +// if(NS_FAILED(rv)) +// return; +// nsCOMPtr<nsIProxyObjectManager> pIProxyObjectManager = +// do_GetService(kProxyObjectManagerCID, &rv); +// if(NS_FAILED(rv)) +// return; +// nsIMyService pIProxiedObject = NULL; +// rv = pIProxyObjectManager->GetProxyForObject(pIProxyQueue, +// NS_GET_IID(nsIMyService), +// pIMyService, PROXY_SYNC, +// (void**)&pIProxiedObject); +// pIProxiedObject->DoIt(...); // Executed on same thread as pIProxyQueue +// ... +// pIProxiedObject->Release(); // Must be done as not managed for you. +// } +// with this: +// { +// nsresult rv; +// NS_WITH_PROXIED_SERVICE(nsIMyService, pIMyService, kMyServiceCID, +// pIProxyQueue, &rv); +// if(NS_FAILED(rv)) +// return; +// pIMyService->DoIt(...); // Executed on the same thread as pIProxyQueue +// } +// and the automatic destructor will take care of releasing the service and +// the proxied object for you. +// +// Note that this macro requires you to link with the xpcom DLL to pick up the +// static member functions from nsServiceManager. + +#define NS_WITH_PROXIED_SERVICE(T, var, cid, Q, rvAddr) \ + nsProxiedService _serv##var(cid, NS_GET_IID(T), Q, PR_FALSE, rvAddr); \ + T* var = (T*)(nsISupports*)_serv##var; + +#define NS_WITH_ALWAYS_PROXIED_SERVICE(T, var, cid, Q, rvAddr) \ + nsProxiedService _serv##var(cid, NS_GET_IID(T), Q, PR_TRUE, rvAddr); \ + T* var = (T*)(nsISupports*)_serv##var; + +//////////////////////////////////////////////////////////////////////////////// +// nsProxiedService +//////////////////////////////////////////////////////////////////////////////// + +class nsProxiedService +{ + public: + + nsProxiedService(const nsCID &aClass, const nsIID &aIID, + nsIEventQueue* pIProxyQueue, PRBool always, nsresult*rv) + { + *rv = nsServiceManager::GetService(aClass, + aIID, + getter_AddRefs(mService)); + if (NS_FAILED(*rv)) return; + InitProxy(aIID, pIProxyQueue, always, rv); + } + + nsProxiedService(const char* aContractID, const nsIID &aIID, + nsIEventQueue* pIProxyQueue, PRBool always, nsresult*rv) + { + *rv = nsServiceManager::GetService(aContractID, + aIID, + getter_AddRefs(mService)); + if (NS_FAILED(*rv)) return; + InitProxy(aIID, pIProxyQueue, always, rv); + } + + void InitProxy(const nsIID &aIID, nsIEventQueue* pIProxyQueue, + PRBool always, nsresult*rv) + { + static NS_DEFINE_CID(kProxyObjectManagerCID, NS_PROXYEVENT_MANAGER_CID); + + nsCOMPtr<nsIProxyObjectManager> pIProxyObjectManager = + do_GetService(kProxyObjectManagerCID, rv); + if (NS_FAILED(*rv)) return; + + PRInt32 proxyType = PROXY_SYNC; + if (always) proxyType |= PROXY_ALWAYS; + *rv = pIProxyObjectManager->GetProxyForObject(pIProxyQueue, + aIID, + mService, + proxyType, + getter_AddRefs(mProxiedService)); + } + + ~nsProxiedService() + { + } + + nsISupports* operator->() const + { + NS_PRECONDITION(mProxiedService != 0, "Your code should test the error result from the constructor."); + return mProxiedService; + } + + PRBool operator==(const nsISupports* other) + { + return ((mProxiedService == other) || (mService == other)); + } + + operator nsISupports*() const + { + return mProxiedService; + } + + protected: + nsCOMPtr<nsISupports> mProxiedService; + nsCOMPtr<nsISupports> mService; + + }; + + +#endif //__nsProxiedServiceManager_h_ |