/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- * * The contents of this file are subject to the Netscape Public License * Version 1.0 (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/NPL/ * * 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 Communicator client code. * * The Initial Developer of the Original Code is Netscape Communications * Corporation. Portions created by Netscape are Copyright (C) 1998 * Netscape Communications Corporation. All Rights Reserved. */ #include "nsIDocumentLoader.h" #include "prmem.h" #include "plstr.h" #include "nsString.h" #include "nsISupportsArray.h" #include "nsIURL.h" #include "nsIStreamListener.h" #include "nsIPostToServer.h" #include "nsIFactory.h" #include "nsIContentViewerContainer.h" #include "nsIContentViewer.h" #include "nsIRefreshUrl.h" #include "nsITimer.h" #include "nsIDocumentLoaderObserver.h" #include "nsVoidArray.h" #include "nsIHttpURL.h" #include "nsIServiceManager.h" #ifndef NECKO #include "nsIURLGroup.h" #include "nsILoadAttribs.h" #include "nsINetService.h" #else #include "nsIURI.h" #include "nsIEventQueueService.h" #include "nsIIOService.h" #include "nsIChannel.h" #endif // NECKO #include "nsIGenericFactory.h" #include "nsIStreamLoadableDocument.h" #include "nsCOMPtr.h" #include "nsCom.h" // XXX ick ick ick #include "nsIDocument.h" #include "nsIPresShell.h" #include "nsIPresContext.h" #ifdef DEBUG #undef NOISY_CREATE_DOC #else #undef NOISY_CREATE_DOC #endif #if defined(DEBUG) || defined(FORCE_PR_LOG) PRLogModuleInfo* gDocLoaderLog = nsnull; #endif /* DEBUG || FORCE_PR_LOG */ /* Private IIDs... */ /* eb001fa0-214f-11d2-bec0-00805f8a66dc */ #define NS_DOCUMENTBINDINFO_IID \ { 0xeb001fa0, 0x214f, 0x11d2, \ {0xbe, 0xc0, 0x00, 0x80, 0x5f, 0x8a, 0x66, 0xdc} } /* Define IIDs... */ static NS_DEFINE_IID(kIStreamObserverIID, NS_ISTREAMOBSERVER_IID); static NS_DEFINE_IID(kIDocumentLoaderIID, NS_IDOCUMENTLOADER_IID); static NS_DEFINE_IID(kIDocumentLoaderFactoryIID, NS_IDOCUMENTLOADERFACTORY_IID); static NS_DEFINE_IID(kDocumentBindInfoIID, NS_DOCUMENTBINDINFO_IID); static NS_DEFINE_IID(kRefreshURLIID, NS_IREFRESHURL_IID); static NS_DEFINE_IID(kHTTPURLIID, NS_IHTTPURL_IID); static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID); static NS_DEFINE_IID(kIDocumentIID, NS_IDOCUMENT_IID); static NS_DEFINE_IID(kIStreamListenerIID, NS_ISTREAMLISTENER_IID); #ifndef NECKO static NS_DEFINE_IID(kIURLGroupIID, NS_IURLGROUP_IID); static NS_DEFINE_IID(kINetServiceIID, NS_INETSERVICE_IID); static NS_DEFINE_IID(kNetServiceCID, NS_NETSERVICE_CID); #else static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID); static NS_DEFINE_IID(kIIOServiceIID, NS_IIOSERVICE_IID); static NS_DEFINE_CID(kIOServiceCID, NS_IOSERVICE_CID); #endif // NECKO static NS_DEFINE_IID(kIContentViewerContainerIID, NS_ICONTENT_VIEWER_CONTAINER_IID); static NS_DEFINE_CID(kGenericFactoryCID, NS_GENERICFACTORY_CID); /* Forward declarations.... */ class nsDocLoaderImpl; /* * The nsDocumentBindInfo contains the state required when a single document * is being loaded... Each instance remains alive until its target URL has * been loaded (or aborted). * * The Document Loader maintains a list of nsDocumentBindInfo instances which * represents the set of documents actively being loaded... */ class nsDocumentBindInfo : public nsIStreamListener, public nsIRefreshUrl { public: nsDocumentBindInfo(); nsresult Init(nsDocLoaderImpl* aDocLoader, const char *aCommand, nsIContentViewerContainer* aContainer, nsISupports* aExtraInfo, nsIStreamObserver* anObserver); NS_DECL_ISUPPORTS nsresult Bind(const nsString& aURLSpec, nsIPostData* aPostData, nsIStreamListener* aListener); nsresult Bind(nsIURL* aURL, nsIStreamListener* aListener); nsresult Stop(void); /* nsIStreamListener interface methods... */ NS_IMETHOD GetBindInfo(nsIURL* aURL, nsStreamBindingInfo* aInfo); NS_IMETHOD OnProgress(nsIURL* aURL, PRUint32 aProgress, PRUint32 aProgressMax); NS_IMETHOD OnStatus(nsIURL* aURL, const PRUnichar* aMsg); NS_IMETHOD OnStartBinding(nsIURL* aURL, const char *aContentType); NS_IMETHOD OnDataAvailable(nsIURL* aURL, nsIInputStream *aStream, PRUint32 aLength); NS_IMETHOD OnStopBinding(nsIURL* aURL, nsresult aStatus, const PRUnichar* aMsg); nsresult GetStatus(void) { return mStatus; } /* nsIRefreshURL interface methods... */ NS_IMETHOD RefreshURL(nsIURL* aURL, PRInt32 millis, PRBool repeat); NS_IMETHOD CancelRefreshURLTimers(void); protected: virtual ~nsDocumentBindInfo(); protected: char* m_Command; nsIURL* m_Url; nsIContentViewerContainer* m_Container; nsISupports* m_ExtraInfo; nsIStreamObserver* m_Observer; nsIStreamListener* m_NextStream; nsDocLoaderImpl* m_DocLoader; nsresult mStatus; }; /**************************************************************************** * nsDocLoaderImpl implementation... ****************************************************************************/ #ifndef NECKO class nsDocLoaderImpl : public nsIDocumentLoader, public nsIURLGroup #else class nsDocLoaderImpl : public nsIDocumentLoader #endif // NECKO { public: nsDocLoaderImpl(); // for nsIGenericFactory: static NS_IMETHODIMP Create(nsISupports *aOuter, const nsIID &aIID, void **aResult); NS_DECL_ISUPPORTS // nsIDocumentLoader interface NS_IMETHOD LoadDocument(const nsString& aURLSpec, const char *aCommand, nsIContentViewerContainer* aContainer, nsIPostData* aPostData = nsnull, nsISupports* aExtraInfo = nsnull, nsIStreamObserver* anObserver = nsnull, nsURLReloadType aType = nsURLReload, const PRUint32 aLocalIP = 0); NS_IMETHOD LoadSubDocument(const nsString& aURLSpec, nsISupports* aExtraInfo = nsnull, nsURLReloadType type = nsURLReload, const PRUint32 aLocalIP = 0); NS_IMETHOD Stop(void); NS_IMETHOD IsBusy(PRBool& aResult); NS_IMETHOD CreateDocumentLoader(nsIDocumentLoader** anInstance); NS_IMETHOD AddObserver(nsIDocumentLoaderObserver *aObserver); NS_IMETHOD RemoveObserver(nsIDocumentLoaderObserver *aObserver); NS_IMETHOD SetContainer(nsIContentViewerContainer* aContainer); NS_IMETHOD GetContainer(nsIContentViewerContainer** aResult); NS_IMETHOD GetContentViewerContainer(PRUint32 aDocumentID, nsIContentViewerContainer** aResult); #ifndef NECKO // nsIURLGroup interface... NS_IMETHOD CreateURL(nsIURL** aInstancePtrResult, nsIURL* aBaseURL, const nsString& aSpec, nsISupports* aContainer); NS_IMETHOD OpenStream(nsIURL *aUrl, nsIStreamListener *aConsumer); NS_IMETHOD GetDefaultLoadAttributes(nsILoadAttribs*& aLoadAttribs); NS_IMETHOD SetDefaultLoadAttributes(nsILoadAttribs* aLoadAttribs); NS_IMETHOD AddChildGroup(nsIURLGroup* aGroup); NS_IMETHOD RemoveChildGroup(nsIURLGroup* aGroup); #endif // NECKO // Implementation specific methods... void FireOnStartDocumentLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, const char* aCommand); void FireOnEndDocumentLoad(nsIDocumentLoader* aLoadInitiator, PRInt32 aStatus); void FireOnStartURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, const char* aContentType, nsIContentViewer* aViewer); void FireOnProgressURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, PRUint32 aProgress, PRUint32 aProgressMax); void FireOnStatusURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, nsString& aMsg); void FireOnEndURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, PRInt32 aStatus); void LoadURLComplete(nsIURL* aURL, nsISupports* aLoader, PRInt32 aStatus); void SetParent(nsDocLoaderImpl* aParent); void SetDocumentUrl(nsIURL* aUrl); nsresult CreateContentViewer(nsIURL* aURL, const char* aContentType, const char *aCommand, nsIContentViewerContainer* aContainer, nsISupports* aExtraInfo, nsIStreamListener** aDocListener, nsIContentViewer** aDocViewer); protected: virtual ~nsDocLoaderImpl(); void ChildDocLoaderFiredEndDocumentLoad(nsDocLoaderImpl* aChild, nsIDocumentLoader* aLoadInitiator, PRInt32 aStatus); private: static PRBool StopBindInfoEnumerator (nsISupports* aElement, void* aData); static PRBool StopDocLoaderEnumerator(void* aElement, void* aData); static PRBool IsBusyEnumerator(void* aElement, void* aData); protected: // IMPORTANT: The ownership implicit in the following member // variables has been explicitly checked and set using nsCOMPtr // for owning pointers and raw COM interface pointers for weak // (ie, non owning) references. If you add any members to this // class, please make the ownership explicit (pinkerton, scc). nsIURL* mDocumentUrl; // [OWNER] ???compare with document nsCOMPtr m_LoadingDocsList; nsVoidArray mChildGroupList; nsVoidArray mDocObservers; nsCOMPtr m_LoadAttrib; nsCOMPtr mStreamObserver; // ??? unclear what to do here nsIContentViewerContainer* mContainer; // [WEAK] it owns me! nsDocLoaderImpl* mParent; // [OWNER] but upside down ownership model // needs to be fixed*** /* * The following counts are for the current document loader only. They * do not take into account URLs being loaded by child document loaders. */ PRInt32 mForegroundURLs; PRInt32 mTotalURLs; /* * This flag indicates that the loader is loading a document. It is set * from the call to LoadDocument(...) until the OnConnectionsComplete(...) * notification is fired... */ PRBool mIsLoadingDocument; }; nsDocLoaderImpl::nsDocLoaderImpl() { NS_INIT_REFCNT(); #if defined(DEBUG) || defined(FORCE_PR_LOG) if (nsnull == gDocLoaderLog) { gDocLoaderLog = PR_NewLogModule("DocLoader"); } #endif /* DEBUG || FORCE_PR_LOG */ mDocumentUrl = nsnull; mParent = nsnull; mContainer = nsnull; mForegroundURLs = 0; mTotalURLs = 0; mIsLoadingDocument = PR_FALSE; NS_NewISupportsArray(getter_AddRefs(m_LoadingDocsList)); NS_NewLoadAttribs(getter_AddRefs(m_LoadAttrib)); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: created.\n", this)); } nsDocLoaderImpl::~nsDocLoaderImpl() { Stop(); if (nsnull != mParent) { #ifndef NECKO mParent->RemoveChildGroup(this); #endif // NECKO NS_RELEASE(mParent); } NS_IF_RELEASE(mDocumentUrl); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: deleted.\n", this)); NS_PRECONDITION((0 == mChildGroupList.Count()), "Document loader has children..."); } /* * Implementation of ISupports methods... */ NS_IMPL_ADDREF(nsDocLoaderImpl); NS_IMPL_RELEASE(nsDocLoaderImpl); NS_IMETHODIMP nsDocLoaderImpl::QueryInterface(REFNSIID aIID, void** aInstancePtr) { if (NULL == aInstancePtr) { return NS_ERROR_NULL_POINTER; } if (aIID.Equals(kIDocumentLoaderIID)) { *aInstancePtr = (void*)(nsIDocumentLoader*)this; NS_ADDREF_THIS(); return NS_OK; } #ifndef NECKO if (aIID.Equals(kIURLGroupIID)) { *aInstancePtr = (void*)(nsIURLGroup*)this; NS_ADDREF_THIS(); return NS_OK; } #endif // NECKO return NS_NOINTERFACE; } NS_IMETHODIMP nsDocLoaderImpl::CreateDocumentLoader(nsIDocumentLoader** anInstance) { nsDocLoaderImpl* newLoader = nsnull; nsresult rv = NS_OK; /* Check for initial error conditions... */ if (nsnull == anInstance) { rv = NS_ERROR_NULL_POINTER; goto done; } NS_NEWXPCOM(newLoader, nsDocLoaderImpl); if (nsnull == newLoader) { *anInstance = nsnull; rv = NS_ERROR_OUT_OF_MEMORY; goto done; } rv = newLoader->QueryInterface(kIDocumentLoaderIID, (void**)anInstance); if (NS_SUCCEEDED(rv)) { #ifndef NECKO AddChildGroup(newLoader); #endif // NECKO newLoader->SetParent(this); } done: return rv; } nsresult nsDocLoaderImpl::CreateContentViewer(nsIURL* aURL, const char* aContentType, const char *aCommand, nsIContentViewerContainer* aContainer, nsISupports* aExtraInfo, nsIStreamListener** aDocListenerResult, nsIContentViewer** aDocViewerResult) { // Lookup class-id for the command plus content-type combination nsCID cid; char id[500]; PR_snprintf(id, sizeof(id), NS_DOCUMENT_LOADER_FACTORY_PROGID_PREFIX "%s/%s", aCommand ? aCommand : "view",/* XXX bug! shouldn't b needed!*/ aContentType); nsresult rv = nsComponentManager::ProgIDToCLSID(id, &cid); if (NS_FAILED(rv)) { return rv; } // Create an instance of the document-loader-factory object nsIDocumentLoaderFactory* factory; rv = nsComponentManager::CreateInstance(cid, (nsISupports *)nsnull, kIDocumentLoaderFactoryIID, (void **)&factory); if (NS_FAILED(rv)) { return rv; } // Now create an instance of the content viewer rv = factory->CreateInstance(aURL, aContentType, aCommand, aContainer, aExtraInfo, aDocListenerResult, aDocViewerResult); NS_RELEASE(factory); return rv; } NS_IMETHODIMP nsDocLoaderImpl::LoadDocument(const nsString& aURLSpec, const char* aCommand, nsIContentViewerContainer* aContainer, nsIPostData* aPostData, nsISupports* aExtraInfo, nsIStreamObserver* anObserver, nsURLReloadType aType, const PRUint32 aLocalIP) { nsresult rv; nsURLLoadType loadType; nsDocumentBindInfo* loader = nsnull; #if defined(DEBUG) char buffer[256]; aURLSpec.ToCString(buffer, sizeof(buffer)); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: LoadDocument(...) called for %s.", this, buffer)); #endif /* DEBUG */ /* Check for initial error conditions... */ if (nsnull == aContainer) { rv = NS_ERROR_NULL_POINTER; goto done; } NS_NEWXPCOM(loader, nsDocumentBindInfo); if (nsnull == loader) { rv = NS_ERROR_OUT_OF_MEMORY; goto done; } loader->Init(this, // DocLoader aCommand, // Command aContainer, // Viewer Container aExtraInfo, // Extra Info anObserver); // Observer /* The DocumentBindInfo reference is only held by the Array... */ m_LoadingDocsList->AppendElement((nsIStreamListener *)loader); /* Initialize the URL counters... */ NS_PRECONDITION(((mTotalURLs == 0) && (mForegroundURLs == 0)), "DocuemntLoader is busy..."); rv = m_LoadAttrib->GetLoadType(&loadType); if (NS_FAILED(rv)) { loadType = nsURLLoadNormal; } if (nsURLLoadBackground != loadType) { mForegroundURLs = 1; } mTotalURLs = 1; /* * Set the flag indicating that the document loader is in the process of * loading a document. This flag will remain set until the * OnConnectionsComplete(...) notification is fired for the loader... */ mIsLoadingDocument = PR_TRUE; m_LoadAttrib->SetReloadType(aType); // If we've got special loading instructions, mind them. if ((aType == nsURLReloadBypassProxy) || (aType == nsURLReloadBypassCacheAndProxy)) { m_LoadAttrib->SetBypassProxy(PR_TRUE); } if ( aLocalIP ) { m_LoadAttrib->SetLocalIP(aLocalIP); } mStreamObserver = dont_QueryInterface(anObserver); rv = loader->Bind(aURLSpec, aPostData, nsnull); done: return rv; } NS_IMETHODIMP nsDocLoaderImpl::LoadSubDocument(const nsString& aURLSpec, nsISupports* aExtraInfo, nsURLReloadType type, const PRUint32 aLocalIP) { nsresult rv; nsDocumentBindInfo* loader = nsnull; #ifdef DEBUG char buffer[256]; aURLSpec.ToCString(buffer, sizeof(buffer)); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: LoadSubDocument(...) called for %s.", this, buffer)); #endif /* DEBUG */ NS_NEWXPCOM(loader, nsDocumentBindInfo); if (nsnull == loader) { rv = NS_ERROR_OUT_OF_MEMORY; return rv; } loader->Init(this, // DocLoader nsnull, // Command nsnull, // Viewer Container aExtraInfo, // Extra Info mStreamObserver); // Observer /* The DocumentBindInfo reference is only held by the Array... */ m_LoadingDocsList->AppendElement((nsIStreamListener *)loader); /* Increment the URL counters... */ mForegroundURLs++; mTotalURLs++; rv = loader->Bind(aURLSpec, nsnull, nsnull); return rv; } NS_IMETHODIMP nsDocLoaderImpl::Stop(void) { PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: Stop() called\n", this)); m_LoadingDocsList->EnumerateForwards(nsDocLoaderImpl::StopBindInfoEnumerator, nsnull); /* * Now the only reference to each nsDocumentBindInfo instance is held by * Netlib via the nsIStreamListener interface... * * When each connection is aborted, Netlib will release its reference to * the StreamListener and the DocumentBindInfo object will be deleted... */ m_LoadingDocsList->Clear(); /* * Now Stop() all documents being loaded by child DocumentLoaders... */ mChildGroupList.EnumerateForwards(nsDocLoaderImpl::StopDocLoaderEnumerator, nsnull); /* Reset the URL counters... */ mForegroundURLs = 0; mTotalURLs = 0; /* * Release the Stream Observer... * It will be set on the next LoadDocument(...) */ mStreamObserver = do_QueryInterface(0); // to be replaced with null_nsCOMPtr() return NS_OK; } NS_IMETHODIMP nsDocLoaderImpl::IsBusy(PRBool& aResult) { aResult = PR_FALSE; /* If this document loader is busy? */ if (0 != mForegroundURLs) { aResult = PR_TRUE; } /* Otherwise, check its child document loaders... */ else { mChildGroupList.EnumerateForwards(nsDocLoaderImpl::IsBusyEnumerator, (void*)&aResult); } return NS_OK; } /* * Do not hold refs to the objects in the observer lists. Observers * are expected to remove themselves upon their destruction if they * have not removed themselves previously */ NS_IMETHODIMP nsDocLoaderImpl::AddObserver(nsIDocumentLoaderObserver* aObserver) { // Make sure the observer isn't already in the list if (mDocObservers.IndexOf(aObserver) == -1) { mDocObservers.AppendElement(aObserver); } return NS_OK; } NS_IMETHODIMP nsDocLoaderImpl::RemoveObserver(nsIDocumentLoaderObserver* aObserver) { if (PR_TRUE == mDocObservers.RemoveElement(aObserver)) { return NS_OK; } return NS_ERROR_FAILURE; } NS_IMETHODIMP nsDocLoaderImpl::SetContainer(nsIContentViewerContainer* aContainer) { mContainer = aContainer; return NS_OK; } NS_IMETHODIMP nsDocLoaderImpl::GetContainer(nsIContentViewerContainer** aResult) { nsresult rv = NS_OK; if (nsnull == aResult) { rv = NS_ERROR_NULL_POINTER; } else { *aResult = mContainer; NS_IF_ADDREF(*aResult); } return rv; } NS_IMETHODIMP nsDocLoaderImpl::GetContentViewerContainer(PRUint32 aDocumentID, nsIContentViewerContainer** aResult) { nsISupports* base = (nsISupports*) aDocumentID; nsIDocument* doc; nsresult rv; rv = base->QueryInterface(kIDocumentIID, (void**)&doc); if (NS_SUCCEEDED(rv)) { nsIPresShell* pres; pres = doc->GetShellAt(0); if (nsnull != pres) { nsIPresContext* presContext; rv = pres->GetPresContext(&presContext); if (NS_SUCCEEDED(rv) && nsnull != presContext) { nsISupports* supp; rv = presContext->GetContainer(&supp); if (NS_SUCCEEDED(rv) && nsnull != supp) { rv = supp->QueryInterface(kIContentViewerContainerIID, (void**)aResult); NS_RELEASE(supp); } NS_RELEASE(presContext); } NS_RELEASE(pres); } NS_RELEASE(doc); } return rv; } #ifndef NECKO NS_IMETHODIMP nsDocLoaderImpl::CreateURL(nsIURL** aInstancePtrResult, nsIURL* aBaseURL, const nsString& aURLSpec, nsISupports* aContainer) { nsresult rv; nsIURL* url = nsnull; /* Check for initial error conditions... */ if (nsnull == aInstancePtrResult) { rv = NS_ERROR_NULL_POINTER; } else { rv = NS_NewURL(&url, aURLSpec, aBaseURL, aContainer, this); if (NS_SUCCEEDED(rv)) { nsCOMPtr loadAttributes; rv = url->GetLoadAttribs(getter_AddRefs(loadAttributes)); if (loadAttributes) loadAttributes->Clone(m_LoadAttrib); } *aInstancePtrResult = url; } return rv; } NS_IMETHODIMP nsDocLoaderImpl::OpenStream(nsIURL *aUrl, nsIStreamListener *aConsumer) { nsresult rv; nsDocumentBindInfo* loader = nsnull; nsURLLoadType loadType = nsURLLoadNormal; #if defined(DEBUG) const char* buffer; aUrl->GetSpec(&buffer); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: OpenStream(...) called for %s.", this, buffer)); #endif /* DEBUG */ NS_NEWXPCOM(loader, nsDocumentBindInfo); if (nsnull == loader) { rv = NS_ERROR_OUT_OF_MEMORY; goto done; } loader->Init(this, // DocLoader nsnull, // Command mContainer, // Viewer Container nsnull, // Extra Info mStreamObserver); // Observer /* The DocumentBindInfo reference is only held by the Array... */ m_LoadingDocsList->AppendElement(((nsISupports*)(nsIStreamObserver*)loader)); /* Update the URL counters... */ nsILoadAttribs* loadAttributes; rv = aUrl->GetLoadAttribs(&loadAttributes); if (NS_SUCCEEDED(rv)) { rv = loadAttributes->GetLoadType(&loadType); if (NS_FAILED(rv)) { loadType = nsURLLoadNormal; } NS_RELEASE(loadAttributes); } if (nsURLLoadBackground != loadType) { mForegroundURLs += 1; } mTotalURLs += 1; rv = loader->Bind(aUrl, aConsumer); done: return rv; } NS_IMETHODIMP nsDocLoaderImpl::GetDefaultLoadAttributes(nsILoadAttribs*& aLoadAttribs) { aLoadAttribs = m_LoadAttrib; NS_IF_ADDREF(aLoadAttribs); return NS_OK;; } NS_IMETHODIMP nsDocLoaderImpl::SetDefaultLoadAttributes(nsILoadAttribs* aLoadAttribs) { m_LoadAttrib->Clone(aLoadAttribs); /* * Now set the default attributes for all child DocumentLoaders... */ PRInt32 count = mChildGroupList.Count(); PRInt32 index; for (index = 0; index < count; index++) { nsIURLGroup* child = (nsIURLGroup*)mChildGroupList.ElementAt(index); child->SetDefaultLoadAttributes(m_LoadAttrib); } return NS_OK; } NS_IMETHODIMP nsDocLoaderImpl::AddChildGroup(nsIURLGroup* aGroup) { mChildGroupList.AppendElement(aGroup); return NS_OK; } NS_IMETHODIMP nsDocLoaderImpl::RemoveChildGroup(nsIURLGroup* aGroup) { nsresult rv = NS_OK; if (PR_FALSE == mChildGroupList.RemoveElement(aGroup)) { rv = NS_ERROR_FAILURE; } return rv; } #endif // NECKO void nsDocLoaderImpl::FireOnStartDocumentLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, const char* aCommand) { PRInt32 count = mDocObservers.Count(); PRInt32 index; /* * First notify any observers that the URL load has begun... */ for (index = 0; index < count; index++) { nsIDocumentLoaderObserver* observer = (nsIDocumentLoaderObserver*)mDocObservers.ElementAt(index); observer->OnStartDocumentLoad(aLoadInitiator, aURL, aCommand); } /* * Finally notify the parent... */ if (nsnull != mParent) { mParent->FireOnStartDocumentLoad(aLoadInitiator, aURL, aCommand); } } void nsDocLoaderImpl::FireOnEndDocumentLoad(nsIDocumentLoader* aLoadInitiator, PRInt32 aStatus) { PRInt32 count = mDocObservers.Count(); PRInt32 index; /* * First notify any observers that the document load has finished... */ for (index = 0; index < count; index++) { nsIDocumentLoaderObserver* observer = (nsIDocumentLoaderObserver*) mDocObservers.ElementAt(index); observer->OnEndDocumentLoad(aLoadInitiator, mDocumentUrl, aStatus, observer); } /* * Finally notify the parent... */ if (nsnull != mParent) { mParent->ChildDocLoaderFiredEndDocumentLoad(this, aLoadInitiator, aStatus); } } void nsDocLoaderImpl::ChildDocLoaderFiredEndDocumentLoad(nsDocLoaderImpl* aChild, nsIDocumentLoader* aLoadInitiator, PRInt32 aStatus) { PRBool busy; IsBusy(busy); if (!busy) { // If the parent is no longer busy because a child document // loader finished, then its time for the parent to fire its // on-end-document-load notification. FireOnEndDocumentLoad(aLoadInitiator, aStatus); } } void nsDocLoaderImpl::FireOnStartURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, const char* aContentType, nsIContentViewer* aViewer) { PRInt32 count = mDocObservers.Count(); PRInt32 index; /* * First notify any observers that the URL load has begun... */ for (index = 0; index < count; index++) { nsIDocumentLoaderObserver* observer = (nsIDocumentLoaderObserver*)mDocObservers.ElementAt(index); observer->OnStartURLLoad(aLoadInitiator, aURL, aContentType, aViewer); } /* * Finally notify the parent... */ if (nsnull != mParent) { mParent->FireOnStartURLLoad(aLoadInitiator, aURL, aContentType, aViewer); } } void nsDocLoaderImpl::FireOnProgressURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, PRUint32 aProgress, PRUint32 aProgressMax) { PRInt32 count = mDocObservers.Count(); PRInt32 index; /* * First notify any observers that there is progress information available... */ for (index = 0; index < count; index++) { nsIDocumentLoaderObserver* observer = (nsIDocumentLoaderObserver*)mDocObservers.ElementAt(index); observer->OnProgressURLLoad(aLoadInitiator, aURL, aProgress, aProgressMax); } /* * Finally notify the parent... */ if (nsnull != mParent) { mParent->FireOnProgressURLLoad(aLoadInitiator, aURL, aProgress, aProgressMax); } } void nsDocLoaderImpl::FireOnStatusURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, nsString& aMsg) { PRInt32 count = mDocObservers.Count(); PRInt32 index; /* * First notify any observers that there is status text available... */ for (index = 0; index < count; index++) { nsIDocumentLoaderObserver* observer = (nsIDocumentLoaderObserver*)mDocObservers.ElementAt(index); observer->OnStatusURLLoad(aLoadInitiator, aURL, aMsg); } /* * Finally notify the parent... */ if (nsnull != mParent) { mParent->FireOnStatusURLLoad(aLoadInitiator, aURL, aMsg); } } void nsDocLoaderImpl::FireOnEndURLLoad(nsIDocumentLoader* aLoadInitiator, nsIURL* aURL, PRInt32 aStatus) { PRInt32 count = mDocObservers.Count(); PRInt32 index; /* * First notify any observers that the URL load has begun... */ for (index = 0; index < count; index++) { nsIDocumentLoaderObserver* observer = (nsIDocumentLoaderObserver*)mDocObservers.ElementAt(index); observer->OnEndURLLoad(aLoadInitiator, aURL, aStatus); } /* * Finally notify the parent... */ if (nsnull != mParent) { mParent->FireOnEndURLLoad(aLoadInitiator, aURL, aStatus); } } void nsDocLoaderImpl::LoadURLComplete(nsIURL* aURL, nsISupports* aBindInfo, PRInt32 aStatus) { PRBool isForegroundURL = PR_FALSE; /* * If the entry is not found in the list, then it must have been cancelled * via Stop(...). So ignore just it... */ PRBool removed = m_LoadingDocsList->RemoveElement(aBindInfo); if (removed) { nsILoadAttribs* loadAttributes; nsURLLoadType loadType = nsURLLoadNormal; nsresult rv = aURL->GetLoadAttribs(&loadAttributes); if (NS_SUCCEEDED(rv) && loadAttributes) { rv = loadAttributes->GetLoadType(&loadType); if (NS_FAILED(rv)) { loadType = nsURLLoadNormal; } NS_RELEASE(loadAttributes); } if (nsURLLoadBackground != loadType) { mForegroundURLs--; isForegroundURL = PR_TRUE; } mTotalURLs -= 1; NS_ASSERTION(mTotalURLs >= mForegroundURLs, "Foreground URL count is wrong."); #if defined(DEBUG) const char* buffer; aURL->GetSpec(&buffer); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: LoadURLComplete(...) called for %s; Foreground URLs: %d; Total URLs: %d\n", this, buffer, mForegroundURLs, mTotalURLs)); #endif /* DEBUG */ } /* * Fire the OnEndURLLoad notification to any observers... */ FireOnEndURLLoad((nsIDocumentLoader *) this, aURL, aStatus); /* * Fire the OnEndDocumentLoad notification to any observers... */ PRBool busy; IsBusy(busy); if (isForegroundURL && !busy) { #if defined(DEBUG) const char* buffer; mDocumentUrl->GetSpec(&buffer); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocLoader:%p: OnEndDocumentLoad(...) called for %s.\n", this, buffer)); #endif /* DEBUG */ FireOnEndDocumentLoad((nsIDocumentLoader *) this, aStatus); } } void nsDocLoaderImpl::SetParent(nsDocLoaderImpl* aParent) { NS_IF_RELEASE(mParent); mParent = aParent; NS_IF_ADDREF(mParent); } void nsDocLoaderImpl::SetDocumentUrl(nsIURL* aUrl) { NS_IF_RELEASE(mDocumentUrl); mDocumentUrl = aUrl; NS_IF_ADDREF(mDocumentUrl); } PRBool nsDocLoaderImpl::StopBindInfoEnumerator(nsISupports* aElement, void* aData) { nsresult rv; nsDocumentBindInfo* bindInfo; rv = aElement->QueryInterface(kDocumentBindInfoIID, (void**)&bindInfo); if (NS_SUCCEEDED(rv)) { bindInfo->Stop(); NS_RELEASE(bindInfo); } return PR_TRUE; } PRBool nsDocLoaderImpl::StopDocLoaderEnumerator(void* aElement, void* aData) { nsresult rv; nsIDocumentLoader* docLoader; rv = ((nsISupports*)aElement)->QueryInterface(kIDocumentLoaderIID, (void**)&docLoader); if (NS_SUCCEEDED(rv)) { docLoader->Stop(); NS_RELEASE(docLoader); } return PR_TRUE; } PRBool nsDocLoaderImpl::IsBusyEnumerator(void* aElement, void* aData) { nsresult rv; nsIDocumentLoader* docLoader; PRBool* result = (PRBool*)aData; rv = ((nsISupports*)aElement)->QueryInterface(kIDocumentLoaderIID, (void**)&docLoader); if (NS_SUCCEEDED(rv)) { docLoader->IsBusy(*result); NS_RELEASE(docLoader); } return !(*result); } /**************************************************************************** * nsDocumentBindInfo implementation... ****************************************************************************/ nsDocumentBindInfo::nsDocumentBindInfo() { NS_INIT_REFCNT(); m_Command = nsnull; m_Url = nsnull; m_Container = nsnull; m_ExtraInfo = nsnull; m_Observer = nsnull; m_NextStream = nsnull; m_DocLoader = nsnull; mStatus = NS_OK; } nsresult nsDocumentBindInfo::Init(nsDocLoaderImpl* aDocLoader, const char *aCommand, nsIContentViewerContainer* aContainer, nsISupports* aExtraInfo, nsIStreamObserver* anObserver) { m_Url = nsnull; m_NextStream = nsnull; m_Command = (nsnull != aCommand) ? PL_strdup(aCommand) : nsnull; m_DocLoader = aDocLoader; NS_ADDREF(m_DocLoader); m_Container = aContainer; NS_IF_ADDREF(m_Container); m_Observer = anObserver; NS_IF_ADDREF(m_Observer); m_ExtraInfo = aExtraInfo; NS_IF_ADDREF(m_ExtraInfo); mStatus = NS_OK; return NS_OK; } nsDocumentBindInfo::~nsDocumentBindInfo() { if (m_Command) { PR_Free(m_Command); } m_Command = nsnull; NS_RELEASE (m_DocLoader); NS_IF_RELEASE(m_Url); NS_IF_RELEASE(m_NextStream); NS_IF_RELEASE(m_Container); NS_IF_RELEASE(m_Observer); NS_IF_RELEASE(m_ExtraInfo); } /* * Implementation of ISupports methods... */ NS_IMPL_ADDREF(nsDocumentBindInfo); NS_IMPL_RELEASE(nsDocumentBindInfo); nsresult nsDocumentBindInfo::QueryInterface(const nsIID& aIID, void** aInstancePtrResult) { NS_PRECONDITION(nsnull != aInstancePtrResult, "null pointer"); if (nsnull == aInstancePtrResult) { return NS_ERROR_NULL_POINTER; } *aInstancePtrResult = NULL; if (aIID.Equals(kIStreamObserverIID)) { *aInstancePtrResult = (void*) ((nsIStreamObserver*)this); NS_ADDREF_THIS(); return NS_OK; } if (aIID.Equals(kIStreamListenerIID)) { *aInstancePtrResult = (void*) ((nsIStreamListener*)this); NS_ADDREF_THIS(); return NS_OK; } if (aIID.Equals(kDocumentBindInfoIID)) { *aInstancePtrResult = (void*) this; NS_ADDREF_THIS(); return NS_OK; } if (aIID.Equals(kRefreshURLIID)) { *aInstancePtrResult = (void*) ((nsIRefreshUrl*)this); NS_ADDREF_THIS(); return NS_OK; } return NS_NOINTERFACE; } nsresult nsDocumentBindInfo::Bind(const nsString& aURLSpec, nsIPostData* aPostData, nsIStreamListener* aListener) { nsresult rv; nsIURL* url = nsnull; /* If this nsDocumentBindInfo was created with a container pointer. * extract the nsISupports iface from it and create the url with * the nsISupports pointer so the backend can have access to the front * end nsIContentViewerContainer for refreshing urls. */ #ifndef NECKO rv = m_DocLoader->CreateURL(&url, nsnull, aURLSpec, m_Container); #else rv = NS_ERROR_NULL_POINTER; #endif // NECKO if (NS_FAILED(rv)) { return rv; } /* Store any POST data into the URL */ if (nsnull != aPostData) { static NS_DEFINE_IID(kPostToServerIID, NS_IPOSTTOSERVER_IID); nsIPostToServer* pts; rv = url->QueryInterface(kPostToServerIID, (void **)&pts); if (NS_SUCCEEDED(rv)) { const char* data = aPostData->GetData(); if (aPostData->IsFile()) { pts->SendDataFromFile(data); } else { pts->SendData(data, aPostData->GetDataLength()); } NS_RELEASE(pts); } } /* * Set the URL has the current "document" being loaded... */ m_DocLoader->SetDocumentUrl(url); /* * Fire the OnStarDocumentLoad interfaces */ m_DocLoader->FireOnStartDocumentLoad((nsIDocumentLoader *) m_DocLoader, url, m_Command); /* * Initiate the network request... */ rv = Bind(url, aListener); NS_RELEASE(url); return rv; } nsresult nsDocumentBindInfo::Bind(nsIURL* aURL, nsIStreamListener* aListener) { nsresult rv = NS_OK; m_Url = aURL; NS_ADDREF(m_Url); #if defined(DEBUG) const char *buffer; aURL->GetSpec(&buffer); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocumentBindInfo:%p: OnStartDocumentLoad(...) called for %s.\n", this, buffer)); #endif /* DEBUG */ // m_DocLoader->FireOnStartDocumentLoad(aURL, m_Command); /* Set up the stream listener (if provided)... */ if (nsnull != aListener) { m_NextStream = aListener; NS_ADDREF(m_NextStream); } #ifndef NECKO /* Start the URL binding process... */ nsINetService *inet = nsnull; rv = nsServiceManager::GetService(kNetServiceCID, kINetServiceIID, (nsISupports **)&inet); if (NS_SUCCEEDED(rv)) { rv = inet->OpenStream(m_Url, this); nsServiceManager::ReleaseService(kNetServiceCID, inet); } #else NS_WITH_SERVICE(nsIIOService, service, kIOServiceCID, &rv); if (NS_FAILED(rv)) return rv; nsIURI *uri = nsnull; rv = m_Url->QueryInterface(nsIURI::GetIID(), (void**)&uri); if (NS_FAILED(rv)) return rv; nsIChannel *channel = nsnull; // XXX NECKO verb? sinkGetter? rv = service->NewChannelFromURI("load", uri, nsnull, &channel); NS_RELEASE(uri); if (NS_FAILED(rv)) return rv; nsIEventQueue *eventQ = nsnull; NS_WITH_SERVICE(nsIEventQueueService, eqService, kEventQueueServiceCID, &rv); if (NS_FAILED(rv)) return rv; rv = eqService->GetThreadEventQueue(PR_CurrentThread(), &eventQ); if (NS_FAILED(rv)) return rv; rv = channel->AsyncRead(0, -1, nsnull, eventQ, this); NS_RELEASE(eventQ); #endif // NECKO return rv; } nsresult nsDocumentBindInfo::Stop(void) { nsresult rv; if (m_Url == nsnull) return NS_OK; #if defined(DEBUG) const char* spec; rv = m_Url->GetSpec(&spec); if (NS_SUCCEEDED(rv)) { PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocumentBindInfo:%p: Stop(...) called for %s.\n", this, spec)); } #endif /* DEBUG */ /* * Mark the IStreamListener as being aborted... If more data is pushed * down the stream, the connection will be aborted... */ mStatus = NS_BINDING_ABORTED; /* Stop the URL binding process... */ #ifndef NECKO nsINetService* inet; rv = nsServiceManager::GetService(kNetServiceCID, kINetServiceIID, (nsISupports **)&inet); if (NS_SUCCEEDED(rv)) { rv = inet->InterruptStream(m_Url); nsServiceManager::ReleaseService(kNetServiceCID, inet); } #else // XXX NECKO // need to interrupt the load; #endif // NECKO return rv; } NS_METHOD nsDocumentBindInfo::GetBindInfo(nsIURL* aURL, nsStreamBindingInfo* aInfo) { nsresult rv = NS_OK; NS_PRECONDITION(nsnull !=m_NextStream, "DocLoader: No stream for document"); if (nsnull != m_NextStream) { rv = m_NextStream->GetBindInfo(aURL, aInfo); } return rv; } NS_METHOD nsDocumentBindInfo::OnProgress(nsIURL* aURL, PRUint32 aProgress, PRUint32 aProgressMax) { nsresult rv = NS_OK; #if defined(DEBUG) const char* spec; (void)aURL->GetSpec(&spec); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocumentBindInfo:%p: OnProgress(...) called for %s. Progress: %d. ProgressMax: %d\n", this, spec, aProgress, aProgressMax)); #endif /* DEBUG */ /* Pass the notification out to the next stream listener... */ if (nsnull != m_NextStream) { rv = m_NextStream->OnProgress(aURL, aProgress, aProgressMax); } /* Pass the notification out to any observers... */ m_DocLoader->FireOnProgressURLLoad((nsIDocumentLoader *) m_DocLoader, aURL, aProgress, aProgressMax); /* Pass the notification out to the Observer... */ if (nsnull != m_Observer) { /* XXX: Should we ignore the return value? */ (void) m_Observer->OnProgress(aURL, aProgress, aProgressMax); } return rv; } NS_METHOD nsDocumentBindInfo::OnStatus(nsIURL* aURL, const PRUnichar* aMsg) { nsresult rv = NS_OK; /* Pass the notification out to the next stream listener... */ if (nsnull != m_NextStream) { rv = m_NextStream->OnStatus(aURL, aMsg); } /* Pass the notification out to any observers... */ nsString msgStr(aMsg); m_DocLoader->FireOnStatusURLLoad((nsIDocumentLoader *) m_DocLoader, aURL, msgStr); /* Pass the notification out to the Observer... */ if (nsnull != m_Observer) { /* XXX: Should we ignore the return value? */ (void) m_Observer->OnStatus(aURL, aMsg); } return rv; } NS_IMETHODIMP nsDocumentBindInfo::OnStartBinding(nsIURL* aURL, const char *aContentType) { nsresult rv = NS_OK; nsIContentViewer* viewer = nsnull; #if defined(DEBUG) const char* spec; (void)aURL->GetSpec(&spec); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocumentBindInfo:%p OnStartBinding(...) called for %s. Content-type is %s\n", this, spec, aContentType)); #endif /* DEBUG */ /* If the binding has been canceled via Stop() then abort the load... */ if (NS_BINDING_ABORTED == mStatus) { rv = NS_BINDING_ABORTED; goto done; } if (nsnull == m_NextStream) { /* * Now that the content type is available, create a document * (and viewer) of the appropriate type... */ if (m_DocLoader) { rv = m_DocLoader->CreateContentViewer(m_Url, aContentType, m_Command, m_Container, m_ExtraInfo, &m_NextStream, &viewer); } else { rv = NS_ERROR_NULL_POINTER; } if (NS_FAILED(rv)) { printf("DocLoaderFactory: Unable to create ContentViewer for command=%s, content-type=%s\n", m_Command ? m_Command : "(null)", aContentType); if ( m_Container ) { // Give content container a chance to do something with this URL. rv = m_Container->HandleUnknownContentType( (nsIDocumentLoader*) m_DocLoader, aURL, aContentType, m_Command ); } // Stop the binding. // This crashes on Unix/Mac... Stop(); goto done; } /* * Give the document container the new viewer... */ if (m_Container) { viewer->SetContainer(m_Container); rv = m_Container->Embed(viewer, m_Command, m_ExtraInfo); if (NS_FAILED(rv)) { goto done; } } } /* * Pass the OnStartBinding(...) notification out to the document * IStreamListener. */ if (nsnull != m_NextStream) { rv = m_NextStream->OnStartBinding(aURL, aContentType); } /* * Notify the DocumentLoadObserver(s) */ if ((nsnull == viewer) && (nsnull != m_Container)) { m_Container->GetContentViewer(&viewer); } m_DocLoader->FireOnStartURLLoad((nsIDocumentLoader *)m_DocLoader, m_Url, aContentType, viewer); /* Pass the notification out to the Observer... */ if (nsnull != m_Observer) { nsresult rv2 = m_Observer->OnStartBinding(aURL, aContentType); if (NS_SUCCEEDED(rv)) rv = rv2; } done: NS_IF_RELEASE(viewer); return rv; } NS_METHOD nsDocumentBindInfo::OnDataAvailable(nsIURL* aURL, nsIInputStream *aStream, PRUint32 aLength) { nsresult rv = NS_OK; #if defined(DEBUG) const char* spec; (void)aURL->GetSpec(&spec); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocumentBindInfo:%p: OnDataAvailable(...) called for %s. Bytes available: %d.\n", this, spec, aLength)); #endif /* DEBUG */ /* If the binding has been canceled via Stop() then abort the load... */ if (NS_BINDING_ABORTED == mStatus) { rv = NS_BINDING_ABORTED; goto done; } if (nsnull != m_NextStream) { /* * Bump the refcount in case the stream gets destroyed while the data * is being processed... If Stop(...) is called the stream could be * freed prematurely :-( * * Currently this can happen if javascript loads a new URL * (via nsIWebShell::LoadURL) during the parse phase... */ nsIStreamListener* listener = m_NextStream; NS_ADDREF(listener); rv = listener->OnDataAvailable(aURL, aStream, aLength); NS_RELEASE(listener); } else { rv = NS_BINDING_FAILED; } done: return rv; } NS_METHOD nsDocumentBindInfo::OnStopBinding(nsIURL* aURL, nsresult aStatus, const PRUnichar* aMsg) { nsresult rv = NS_OK; #if defined(DEBUG) const char* spec; (void)aURL->GetSpec(&spec); PR_LOG(gDocLoaderLog, PR_LOG_DEBUG, ("DocumentBindInfo:%p: OnStopBinding(...) called for %s. Status: %d.\n", this, spec, aStatus)); #endif /* DEBUG */ if (NS_FAILED(aStatus)) { const char *url; if (nsnull != aURL) aURL->GetSpec(&url); else url = ""; cerr << "nsDocumentBindInfo::OnStopBinding: Load of URL '" << url << "' failed. Error code: " << NS_ERROR_GET_CODE(aStatus) << "\n"; } if (nsnull != m_NextStream) { rv = m_NextStream->OnStopBinding(aURL, aStatus, aMsg); } /* Pass the notification out to the Observer... */ if (nsnull != m_Observer) { /* XXX: Should we ignore the return value? */ (void) m_Observer->OnStopBinding(aURL, aStatus, aMsg); } /* * The stream is complete... Tell the DocumentLoader to release us... */ m_DocLoader->LoadURLComplete(aURL, (nsIStreamListener *)this, aStatus); NS_IF_RELEASE(m_NextStream); return rv; } NS_METHOD nsDocumentBindInfo::RefreshURL(nsIURL* aURL, PRInt32 millis, PRBool repeat) { if (nsnull != m_Container) { nsresult rv; nsIRefreshUrl* refresher = nsnull; /* Delegate the actual refresh call up-to the container. */ rv = m_Container->QueryInterface(kRefreshURLIID, (void**)&refresher); if (NS_FAILED(rv)) { return PR_FALSE; } rv = refresher->RefreshURL(aURL, millis, repeat); NS_RELEASE(refresher); return rv; } return PR_FALSE; } NS_METHOD nsDocumentBindInfo::CancelRefreshURLTimers(void) { if (nsnull != m_Container) { nsresult rv; nsIRefreshUrl* refresher = nsnull; /* Delegate the actual cancel call up-to the container. */ rv = m_Container->QueryInterface(kRefreshURLIID, (void**)&refresher); if (NS_FAILED(rv)) { return PR_FALSE; } rv = refresher->CancelRefreshURLTimers(); NS_RELEASE(refresher); return rv; } return PR_FALSE; } /******************************************* * nsDocLoaderServiceFactory *******************************************/ static nsDocLoaderImpl* gServiceInstance = nsnull; NS_IMETHODIMP nsDocLoaderImpl::Create(nsISupports *aOuter, const nsIID &aIID, void **aResult) { nsresult rv; nsDocLoaderImpl* inst; // Parameter validation... if (NULL == aResult) { rv = NS_ERROR_NULL_POINTER; goto done; } // Do not support aggregatable components... *aResult = NULL; if (NULL != aOuter) { rv = NS_ERROR_NO_AGGREGATION; goto done; } if (NULL == gServiceInstance) { // Create a new instance of the component... NS_NEWXPCOM(gServiceInstance, nsDocLoaderImpl); if (NULL == gServiceInstance) { rv = NS_ERROR_OUT_OF_MEMORY; goto done; } } // If the QI fails, the component will be destroyed... // // Use a local copy so the NS_RELEASE() will not null the global // pointer... inst = gServiceInstance; NS_ADDREF(inst); rv = inst->QueryInterface(aIID, aResult); NS_RELEASE(inst); done: return rv; } // Entry point to create nsDocLoaderService factory instances... nsresult NS_NewDocLoaderServiceFactory(nsIFactory** aResult) { nsresult rv = NS_OK; nsIGenericFactory* factory; rv = nsComponentManager::CreateInstance(kGenericFactoryCID, nsnull, nsIGenericFactory::GetIID(), (void**)&factory); if (NS_FAILED(rv)) return rv; rv = factory->SetConstructor(nsDocLoaderImpl::Create); if (NS_FAILED(rv)) { NS_RELEASE(factory); return rv; } *aResult = factory; return rv; }