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pjs/uriloader/base/nsDocLoader.cpp

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/* -*- 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 "nsIURL.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(kILoadGroupIID, NS_ILOADGROUP_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(nsIURI* aURL, nsIStreamListener* aListener);
nsresult Stop(void);
/* nsIStreamListener interface methods... */
NS_IMETHOD GetBindInfo(nsIURI* aURL, nsStreamBindingInfo* aInfo);
NS_IMETHOD OnProgress(nsIURI* aURL, PRUint32 aProgress, PRUint32 aProgressMax);
NS_IMETHOD OnStatus(nsIURI* aURL, const PRUnichar* aMsg);
NS_IMETHOD OnStartBinding(nsIURI* aURL, const char *aContentType);
NS_IMETHOD OnDataAvailable(nsIURI* aURL, nsIInputStream *aStream, PRUint32 aLength);
NS_IMETHOD OnStopBinding(nsIURI* aURL, nsresult aStatus, const PRUnichar* aMsg);
nsresult GetStatus(void) { return mStatus; }
/* nsIRefreshURL interface methods... */
NS_IMETHOD RefreshURL(nsIURI* aURL, PRInt32 millis, PRBool repeat);
NS_IMETHOD CancelRefreshURLTimers(void);
protected:
virtual ~nsDocumentBindInfo();
protected:
char* m_Command;
nsIURI* 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 nsILoadGroup
#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
// nsILoadGroup interface...
NS_IMETHOD CreateURL(nsIURI** aInstancePtrResult,
nsIURI* aBaseURL,
const nsString& aSpec,
nsISupports* aContainer);
NS_IMETHOD OpenStream(nsIURI *aUrl,
nsIStreamListener *aConsumer);
NS_IMETHOD GetDefaultLoadAttributes(nsILoadAttribs*& aLoadAttribs);
NS_IMETHOD SetDefaultLoadAttributes(nsILoadAttribs* aLoadAttribs);
NS_IMETHOD AddChildGroup(nsILoadGroup* aGroup);
NS_IMETHOD RemoveChildGroup(nsILoadGroup* aGroup);
#endif // NECKO
// Implementation specific methods...
void FireOnStartDocumentLoad(nsIDocumentLoader* aLoadInitiator,
nsIURI* aURL,
const char* aCommand);
void FireOnEndDocumentLoad(nsIDocumentLoader* aLoadInitiator,
PRInt32 aStatus);
void FireOnStartURLLoad(nsIDocumentLoader* aLoadInitiator,
nsIURI* aURL,
const char* aContentType,
nsIContentViewer* aViewer);
void FireOnProgressURLLoad(nsIDocumentLoader* aLoadInitiator,
nsIURI* aURL, PRUint32 aProgress,
PRUint32 aProgressMax);
void FireOnStatusURLLoad(nsIDocumentLoader* aLoadInitiator,
nsIURI* aURL, nsString& aMsg);
void FireOnEndURLLoad(nsIDocumentLoader* aLoadInitiator,
nsIURI* aURL, PRInt32 aStatus);
void LoadURLComplete(nsIURI* aURL, nsISupports* aLoader, PRInt32 aStatus);
void SetParent(nsDocLoaderImpl* aParent);
void SetDocumentUrl(nsIURI* aUrl);
nsresult CreateContentViewer(nsIURI* 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).
nsIURI* mDocumentUrl; // [OWNER] ???compare with document
nsCOMPtr<nsISupportsArray> m_LoadingDocsList;
nsVoidArray mChildGroupList;
nsVoidArray mDocObservers;
nsCOMPtr<nsILoadAttribs> m_LoadAttrib;
nsCOMPtr<nsIStreamObserver> 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(kILoadGroupIID)) {
*aInstancePtr = (void*)(nsILoadGroup*)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(nsIURI* 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(nsIURI** aInstancePtrResult,
nsIURI* aBaseURL,
const nsString& aURLSpec,
nsISupports* aContainer)
{
nsresult rv;
nsIURI* 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<nsILoadAttribs> loadAttributes;
rv = url->GetLoadAttribs(getter_AddRefs(loadAttributes));
if (loadAttributes)
loadAttributes->Clone(m_LoadAttrib);
}
*aInstancePtrResult = url;
}
return rv;
}
NS_IMETHODIMP
nsDocLoaderImpl::OpenStream(nsIURI *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++) {
nsILoadGroup* child = (nsILoadGroup*)mChildGroupList.ElementAt(index);
child->SetDefaultLoadAttributes(m_LoadAttrib);
}
return NS_OK;
}
NS_IMETHODIMP
nsDocLoaderImpl::AddChildGroup(nsILoadGroup* aGroup)
{
mChildGroupList.AppendElement(aGroup);
return NS_OK;
}
NS_IMETHODIMP
nsDocLoaderImpl::RemoveChildGroup(nsILoadGroup* aGroup)
{
nsresult rv = NS_OK;
if (PR_FALSE == mChildGroupList.RemoveElement(aGroup)) {
rv = NS_ERROR_FAILURE;
}
return rv;
}
#endif // NECKO
void nsDocLoaderImpl::FireOnStartDocumentLoad(nsIDocumentLoader* aLoadInitiator,
nsIURI* 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,
nsIURI* 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,
nsIURI* 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,
nsIURI* 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,
nsIURI* 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(nsIURI* 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(nsIURI* 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;
nsIURI* 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(nsIURI* 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(nsIURI* 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(nsIURI* 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(nsIURI* 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(nsIURI* 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(nsIURI* 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(nsIURI* 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(nsIURI* 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;
}
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