c01e94cad7
a) create a new nsIComponentManager with only four functions on it: CreateInstance CreateInstanceByContractID GetClassInfo GetClassInfoByContractID. b) rename the old nsIComponentManager to nsIComponentManagerObsolete. c) fixes callers which use to access the nsIComponentManager for component registration functionality. These callers will temporary use the nsIComponentManagerObsolete interface. d) Create a new API NS_GetComponentManager() which mirrors the NS_GetServiceManager() e) Perserves the old NS_GetGlobalComponentManager(). Note the cast usage. r/sr = rpotts@netscape.com alecf@netscape.com brendan@mozilla.org git-svn-id: svn://10.0.0.236/trunk@110748 18797224-902f-48f8-a5cc-f745e15eee43
333 lines
10 KiB
C++
333 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.1 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Contributor(s): Doug Turner <dougt@netscape.com> (Original Author)
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* Judson Valeski <valeski@netscape.com>
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* Dan Matejka <danm@netscape.com>
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* Scott Collins <scc@netscape.com>
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* Heikki Toivonen <heiki@citec.fi>
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* Patrick Beard <beard@netscape.com>
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* Pierre Phaneuf <pp@ludusdesign.com>
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* Warren Harris <warren@netscape.com>
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* Chris Seawood <cls@seawood.org>
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* Chris Waterson <waterson@netscape.com>
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* Dan Mosedale <dmose@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the NPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the NPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#include "nsProxyEvent.h"
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#include "nsIProxyObjectManager.h"
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#include "nsProxyEventPrivate.h"
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#include "nsIProxyCreateInstance.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsComponentManagerObsolete.h"
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#include "nsCOMPtr.h"
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#include "nsIEventQueueService.h"
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#include "nsIThread.h"
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static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
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/***************************************************************************/
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/* nsProxyCreateInstance */
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/* This private class will allow us to create Instances on another thread */
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/***************************************************************************/
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class nsProxyCreateInstance : public nsIProxyCreateInstance
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{
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NS_DECL_ISUPPORTS
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NS_IMETHOD CreateInstanceByIID(const nsIID & cid, nsISupports *aOuter, const nsIID & iid, void * *result);
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NS_IMETHOD CreateInstanceByContractID(const char *aContractID, nsISupports *aOuter, const nsIID & iid, void * *result);
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nsProxyCreateInstance();
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virtual ~nsProxyCreateInstance();
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};
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nsProxyCreateInstance::nsProxyCreateInstance()
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{
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NS_INIT_REFCNT();
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NS_ADDREF_THIS();
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}
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nsProxyCreateInstance::~nsProxyCreateInstance()
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{
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}
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NS_IMPL_ISUPPORTS1(nsProxyCreateInstance, nsIProxyCreateInstance)
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NS_IMETHODIMP nsProxyCreateInstance::CreateInstanceByIID(const nsIID & cid, nsISupports *aOuter, const nsIID & iid, void * *result)
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{
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return nsComponentManager::CreateInstance( cid,
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aOuter,
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iid,
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result);
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}
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NS_IMETHODIMP nsProxyCreateInstance::CreateInstanceByContractID(const char *aContractID, nsISupports *aOuter, const nsIID & iid, void * *result)
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{
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return nsComponentManager::CreateInstance( aContractID,
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aOuter,
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iid,
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result);
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}
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/////////////////////////////////////////////////////////////////////////
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// nsProxyObjectManager
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/////////////////////////////////////////////////////////////////////////
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nsProxyObjectManager* nsProxyObjectManager::mInstance = nsnull;
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NS_IMPL_THREADSAFE_ISUPPORTS1(nsProxyObjectManager, nsIProxyObjectManager)
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nsProxyObjectManager::nsProxyObjectManager()
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{
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NS_INIT_REFCNT();
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mProxyClassMap = new nsHashtable(256, PR_TRUE);
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mProxyObjectMap = new nsHashtable(256, PR_TRUE);
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mProxyCreationMonitor = PR_NewMonitor();
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}
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static PRBool PurgeProxyClasses(nsHashKey *aKey, void *aData, void* closure)
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{
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nsProxyEventClass* ptr = NS_REINTERPRET_CAST(nsProxyEventClass*, aData);
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NS_RELEASE(ptr);
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return PR_TRUE;
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}
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nsProxyObjectManager::~nsProxyObjectManager()
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{
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if (mProxyClassMap)
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{
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mProxyClassMap->Reset((nsHashtableEnumFunc)PurgeProxyClasses, nsnull);
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delete mProxyClassMap;
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}
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delete mProxyObjectMap;
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if (mProxyCreationMonitor) {
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PR_DestroyMonitor(mProxyCreationMonitor);
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}
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nsProxyObjectManager::mInstance = nsnull;
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}
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PRBool
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nsProxyObjectManager::IsManagerShutdown()
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{
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if (mInstance)
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return PR_FALSE;
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return PR_TRUE;
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}
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nsProxyObjectManager *
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nsProxyObjectManager::GetInstance()
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{
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if (! mInstance)
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{
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mInstance = new nsProxyObjectManager();
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}
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return mInstance;
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}
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// Helpers
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NS_IMETHODIMP
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nsProxyObjectManager::Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr)
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{
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nsProxyObjectManager *proxyObjectManager = GetInstance();
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if (proxyObjectManager == nsnull)
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return NS_ERROR_OUT_OF_MEMORY;
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return proxyObjectManager->QueryInterface(aIID, aInstancePtr);
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}
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NS_IMETHODIMP
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nsProxyObjectManager::GetProxyForObject(nsIEventQueue *destQueue,
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REFNSIID aIID,
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nsISupports* aObj,
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PRInt32 proxyType,
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void** aProxyObject)
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{
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if (!aObj) return NS_ERROR_NULL_POINTER;
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if (!aProxyObject) return NS_ERROR_NULL_POINTER;
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nsresult rv;
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nsCOMPtr<nsIEventQueue> postQ;
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*aProxyObject = nsnull;
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// check to see if the destination Q is a special case.
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nsCOMPtr<nsIEventQueueService> eventQService =
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do_GetService(kEventQueueServiceCID, &rv);
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if (NS_FAILED(rv))
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return rv;
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rv = eventQService->ResolveEventQueue(destQueue, getter_AddRefs(postQ));
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if (NS_FAILED(rv))
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return rv;
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// check to see if the eventQ is on our thread. If so, just return the real object.
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if (postQ && !(proxyType & PROXY_ASYNC) && !(proxyType & PROXY_ALWAYS))
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{
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PRBool aResult;
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postQ->IsQueueOnCurrentThread(&aResult);
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if (aResult)
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{
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return aObj->QueryInterface(aIID, aProxyObject);
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}
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}
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// check to see if proxy is there or not.
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*aProxyObject = nsProxyEventObject::GetNewOrUsedProxy(postQ, proxyType, aObj, aIID);
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if (*aProxyObject == nsnull)
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return NS_ERROR_NO_INTERFACE; //fix error code?
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return NS_OK;
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}
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NS_IMETHODIMP
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nsProxyObjectManager::GetProxy( nsIEventQueue *destQueue,
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const nsCID &aClass,
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nsISupports *aDelegate,
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const nsIID &aIID,
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PRInt32 proxyType,
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void** aProxyObject)
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{
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if (!aProxyObject) return NS_ERROR_NULL_POINTER;
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*aProxyObject = nsnull;
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// 1. Create a proxy for creating an instance on another thread.
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nsIProxyCreateInstance* ciProxy = nsnull;
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nsProxyCreateInstance* ciObject = new nsProxyCreateInstance();
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if (ciObject == nsnull)
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return NS_ERROR_NULL_POINTER;
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nsresult rv = GetProxyForObject(destQueue,
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NS_GET_IID(nsIProxyCreateInstance),
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ciObject,
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PROXY_SYNC,
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(void**)&ciProxy);
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if (NS_FAILED(rv))
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{
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delete ciObject;
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return rv;
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}
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// 2. now create a new instance of the request object via our proxy.
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nsISupports* aObj;
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rv = ciProxy->CreateInstanceByIID(aClass,
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aDelegate,
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aIID,
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(void**)&aObj);
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// 3. Delete the create instance proxy and its real object.
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NS_RELEASE(ciProxy);
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delete ciObject;
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ciObject = nsnull;
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// 4. Check to see if creating the requested instance failed.
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if ( NS_FAILED(rv))
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{
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return rv;
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}
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// 5. Now create a proxy object for the requested object.
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rv = GetProxyForObject(destQueue, aIID, aObj, proxyType, aProxyObject);
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// 6. release ownership of aObj so that aProxyObject owns it.
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NS_RELEASE(aObj);
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// 7. return the error returned from GetProxyForObject. Either way, we our out of here.
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return rv;
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}
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/**
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* Helper function for code that already has a link-time dependency on
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* libxpcom and needs to get proxies in a bunch of different places.
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* This way, the caller isn't forced to get the proxy object manager
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* themselves every single time, thus making the calling code more
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* readable.
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*/
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NS_COM nsresult
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NS_GetProxyForObject(nsIEventQueue *destQueue,
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REFNSIID aIID,
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nsISupports* aObj,
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PRInt32 proxyType,
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void** aProxyObject)
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{
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static NS_DEFINE_CID(proxyObjMgrCID, NS_PROXYEVENT_MANAGER_CID);
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nsresult rv; // temp for return value
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// get the proxy object manager
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//
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nsCOMPtr<nsIProxyObjectManager> proxyObjMgr =
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do_GetService(proxyObjMgrCID, &rv);
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if (NS_FAILED(rv))
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return NS_ERROR_FAILURE;
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// and try to get the proxy object
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//
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return proxyObjMgr->GetProxyForObject(destQueue, aIID, aObj,
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proxyType, aProxyObject);
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}
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