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gecko-dev/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.
*/
#ifdef XP_MAC
#include "nsIDocumentLoader.h"
#define NS_IMPL_IDS
#else
#define NS_IMPL_IDS
#include "nsIDocumentLoader.h"
#endif
#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 "nsIRefreshUrl.h"
#include "nsITimer.h"
#include "nsIDocumentLoaderObserver.h"
#include "nsVoidArray.h"
#include "nsIHttpUrl.h"
#include "nsILoadAttribs.h"
#include "nsIURLGroup.h"
#include "nsIServiceManager.h"
#include "nsINetService.h"
// XXX: Only needed for dummy factory...
#include "nsIDocument.h"
#include "nsIDocumentViewer.h"
#include "nsICSSParser.h"
#include "nsLayoutCID.h"
/* Forward declarations.... */
class nsDocLoaderImpl;
#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... */
NS_DEFINE_IID(kIStreamObserverIID, NS_ISTREAMOBSERVER_IID);
NS_DEFINE_IID(kIDocumentLoaderIID, NS_IDOCUMENTLOADER_IID);
NS_DEFINE_IID(kIDocumentLoaderFactoryIID, NS_IDOCUMENTLOADERFACTORY_IID);
NS_DEFINE_IID(kDocumentBindInfoIID, NS_DOCUMENTBINDINFO_IID);
NS_DEFINE_IID(kIURLGroupIID, NS_IURLGROUP_IID);
NS_DEFINE_IID(kRefreshURLIID, NS_IREFRESHURL_IID);
NS_DEFINE_IID(kHTTPURLIID, NS_IHTTPURL_IID);
NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
NS_DEFINE_IID(kIDocumentIID, NS_IDOCUMENT_IID);
NS_DEFINE_IID(kIStreamListenerIID, NS_ISTREAMLISTENER_IID);
NS_DEFINE_IID(kINetServiceIID, NS_INETSERVICE_IID);
/* Define CIDs... */
NS_DEFINE_IID(kCHTMLDocumentCID, NS_HTMLDOCUMENT_CID);
NS_DEFINE_IID(kCImageDocumentCID, NS_IMAGEDOCUMENT_CID);
NS_DEFINE_IID(kNetServiceCID, NS_NETSERVICE_CID);
/*
* 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);
NS_IMETHOD OnProgress(nsIURL* aURL, PRInt32 aProgress, PRInt32 aProgressMax);
NS_IMETHOD OnStatus(nsIURL* aURL, const nsString& aMsg);
NS_IMETHOD OnStartBinding(nsIURL* aURL, const char *aContentType);
NS_IMETHOD OnDataAvailable(nsIURL* aURL, nsIInputStream *aStream, PRInt32 aLength);
NS_IMETHOD OnStopBinding(nsIURL* aURL, PRInt32 aStatus, const nsString& 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;
};
/****************************************************************************
* nsDocFactoryImpl implementation...
****************************************************************************/
class nsDocFactoryImpl : public nsIDocumentLoaderFactory
{
public:
nsDocFactoryImpl();
NS_DECL_ISUPPORTS
NS_IMETHOD CreateInstance(nsIURL* aURL,
const char* aContentType,
const char* aCommand,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aDocListener,
nsIContentViewer** aDocViewer);
nsresult InitUAStyleSheet();
nsresult CreateImageDocument(nsIURL* aURL,
const char* aCommand,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aDocListener,
nsIContentViewer** aDocViewer);
nsresult CreatePluginDocument(nsIURL* aURL,
const char* aCommand,
const char* aContentType,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aDocListener,
nsIContentViewer** aDocViewer);
};
static nsIStyleSheet* gUAStyleSheet;
nsDocFactoryImpl::nsDocFactoryImpl()
{
NS_INIT_REFCNT();
}
/*
* Implementation of ISupports methods...
*/
NS_IMPL_ISUPPORTS(nsDocFactoryImpl,kIDocumentLoaderFactoryIID);
static char* gValidTypes[] = {"text/html","text/xml","application/rtf",0};
static char* gImageTypes[] = {"image/gif", "image/jpeg", 0 };
static char* gPluginTypes[] = {
"video/quicktime",
"video/msvideo",
"video/x-msvideo",
"application/vnd.netfpx",
"image/vnd.fpx",
"model/vrml",
"x-world/x-vrml",
"audio/midi",
"audio/x-midi",
"audio/wav",
"audio/x-wav",
"audio/aiff",
"audio/x-aiff",
"audio/basic",
"application/x-shockwave-flash",
"text/plain",
0
};
NS_IMETHODIMP
nsDocFactoryImpl::CreateInstance(nsIURL* aURL,
const char* aContentType,
const char *aCommand,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aDocListener,
nsIContentViewer** aDocViewer)
{
nsresult rv = NS_ERROR_FAILURE;
nsIDocument* doc = nsnull;
nsIDocumentViewer* docv = nsnull;
int typeIndex=0;
while(gValidTypes[typeIndex]) {
if (0== PL_strcmp(gValidTypes[typeIndex++], aContentType)) {
goto nextstep;
}
}
// Try image types
typeIndex = 0;
while(gImageTypes[typeIndex]) {
if (0== PL_strcmp(gImageTypes[typeIndex++], aContentType)) {
return CreateImageDocument(aURL, aCommand,
aContainer,
aDocListener,
aDocViewer);
}
}
// Try plugin types
typeIndex = 0;
while(gPluginTypes[typeIndex]) {
if (0== PL_strcmp(gPluginTypes[typeIndex++], aContentType)) {
return CreatePluginDocument(aURL, aCommand, aContentType,
aContainer,
aDocListener,
aDocViewer);
}
}
goto done;
nextstep:
// Load the UA style sheet if we haven't already done that
if (nsnull == gUAStyleSheet) {
InitUAStyleSheet();
}
/*
* Create the HTML document...
*/
rv = nsRepository::CreateInstance(kCHTMLDocumentCID,
nsnull,
kIDocumentIID,
(void **)&doc);
if (NS_OK != rv) {
goto done;
}
/*
* Create the HTML Content Viewer...
*/
rv = NS_NewDocumentViewer(docv);
if (NS_OK != rv) {
goto done;
}
docv->SetUAStyleSheet(gUAStyleSheet);
/*
* Initialize the document to begin loading the data...
*
* An nsIStreamListener connected to the parser is returned in
* aDocListener.
*/
rv = doc->StartDocumentLoad(aURL, aContainer, aDocListener);
if (NS_OK != rv) {
NS_IF_RELEASE(docv);
goto done;
}
/*
* Bind the document to the Content Viewer...
*/
rv = docv->BindToDocument(doc, aCommand);
*aDocViewer = docv;
done:
NS_IF_RELEASE(doc);
return rv;
}
nsresult
nsDocFactoryImpl::CreateImageDocument(nsIURL* aURL,
const char* aCommand,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aDocListener,
nsIContentViewer** aDocViewer)
{
nsresult rv = NS_ERROR_FAILURE;
nsIDocument* doc = nsnull;
nsIDocumentViewer* docv = nsnull;
// Load the UA style sheet if we haven't already done that
if (nsnull == gUAStyleSheet) {
InitUAStyleSheet();
}
/*
* Create the image document...
*/
rv = nsRepository::CreateInstance(kCImageDocumentCID,
nsnull,
kIDocumentIID,
(void **)&doc);
if (NS_OK != rv) {
goto done;
}
/*
* Create the image content viewer...
*/
rv = NS_NewDocumentViewer(docv);
if (NS_OK != rv) {
goto done;
}
docv->SetUAStyleSheet(gUAStyleSheet);
/*
* Initialize the document to begin loading the data...
*
* An nsIStreamListener connected to the parser is returned in
* aDocListener.
*/
rv = doc->StartDocumentLoad(aURL, aContainer, aDocListener);
if (NS_OK != rv) {
NS_IF_RELEASE(docv);
goto done;
}
/*
* Bind the document to the Content Viewer...
*/
rv = docv->BindToDocument(doc, aCommand);
*aDocViewer = docv;
done:
NS_IF_RELEASE(doc);
return rv;
}
extern nsresult
NS_NewPluginContentViewer(const char* aCommand,
nsIStreamListener** aDocListener,
nsIContentViewer** aDocViewer);
nsresult
nsDocFactoryImpl::CreatePluginDocument(nsIURL* aURL,
const char* aCommand,
const char* aContentType,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aDocListener,
nsIContentViewer** aDocViewer)
{
/*
* Create the plugin content viewer and stream listener...
*/
nsresult rv = NS_NewPluginContentViewer(aCommand,
aDocListener,
aDocViewer);
return rv;
}
#define UA_CSS_URL "resource:/res/ua.css"
nsresult nsDocFactoryImpl::InitUAStyleSheet()
{
nsresult rv = NS_OK;
if (nsnull == gUAStyleSheet) { // snarf one
nsIURL* uaURL;
rv = NS_NewURL(&uaURL, nsnull, nsString(UA_CSS_URL)); // XXX this bites, fix it
if (NS_OK == rv) {
// Get an input stream from the url
PRInt32 ec;
nsIInputStream* in = uaURL->Open(&ec);
if (nsnull != in) {
// Translate the input using the argument character set id into unicode
nsIUnicharInputStream* uin;
rv = NS_NewConverterStream(&uin, nsnull, in);
if (NS_OK == rv) {
// Create parser and set it up to process the input file
nsICSSParser* css;
rv = NS_NewCSSParser(&css);
if (NS_OK == rv) {
// Parse the input and produce a style set
// XXX note: we are ignoring rv until the error code stuff in the
// input routines is converted to use nsresult's
css->Parse(uin, uaURL, gUAStyleSheet);
NS_RELEASE(css);
}
NS_RELEASE(uin);
}
NS_RELEASE(in);
}
else {
// printf("open of %s failed: error=%x\n", UA_CSS_URL, ec);
rv = NS_ERROR_ILLEGAL_VALUE; // XXX need a better error code here
}
NS_RELEASE(uaURL);
}
}
return rv;
}
/****************************************************************************
* nsDocLoaderImpl implementation...
****************************************************************************/
class nsDocLoaderImpl : public nsIDocumentLoader,
public nsIURLGroup
{
public:
nsDocLoaderImpl();
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 Stop(void);
NS_IMETHOD IsBusy(PRBool& aResult);
NS_IMETHOD CreateDocumentLoader(nsIDocumentLoader** anInstance);
NS_IMETHOD SetDocumentFactory(nsIDocumentLoaderFactory* aFactory);
NS_IMETHOD AddObserver(nsIDocumentLoaderObserver *aObserver);
NS_IMETHOD RemoveObserver(nsIDocumentLoaderObserver *aObserver);
// 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);
// Implementation specific methods...
void LoadURLComplete(nsIURL* aURL, nsISupports* aLoader, PRInt32 aStatus);
void SetParent(nsDocLoaderImpl* aParent);
protected:
virtual ~nsDocLoaderImpl();
private:
static PRBool StopBindInfoEnumerator (nsISupports* aElement, void* aData);
static PRBool StopDocLoaderEnumerator(void* aElement, void* aData);
static PRBool IsBusyEnumerator(void* aElement, void* aData);
public:
nsIDocumentLoaderFactory* m_DocFactory;
protected:
nsISupportsArray* m_LoadingDocsList;
nsVoidArray mChildGroupList;
nsVoidArray mDocObservers;
nsILoadAttribs* m_LoadAttrib;
nsIStreamObserver* mStreamObserver;
nsDocLoaderImpl* mParent;
/*
* 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;
};
nsDocLoaderImpl::nsDocLoaderImpl()
{
NS_INIT_REFCNT();
#if defined(DEBUG) || defined(FORCE_PR_LOG)
if (nsnull == gDocLoaderLog) {
gDocLoaderLog = PR_NewLogModule("DocLoader");
}
#endif /* DEBUG || FORCE_PR_LOG */
mParent = nsnull;
mStreamObserver = nsnull;
mForegroundURLs = 0;
mTotalURLs = 0;
NS_NewISupportsArray(&m_LoadingDocsList);
NS_NewLoadAttribs(&m_LoadAttrib);
m_DocFactory = new nsDocFactoryImpl();
NS_ADDREF(m_DocFactory);
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader - DocLoader [%p] created.\n", this));
}
nsDocLoaderImpl::~nsDocLoaderImpl()
{
Stop();
if (nsnull != mParent) {
mParent->RemoveChildGroup(this);
NS_RELEASE(mParent);
}
NS_IF_RELEASE(m_LoadingDocsList);
NS_IF_RELEASE(m_DocFactory);
NS_IF_RELEASE(m_LoadAttrib);
NS_IF_RELEASE(mStreamObserver);
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader - 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;
}
if (aIID.Equals(kIURLGroupIID)) {
*aInstancePtr = (void*)(nsIURLGroup*)this;
NS_ADDREF_THIS();
return NS_OK;
}
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)) {
AddChildGroup(newLoader);
newLoader->SetParent(this);
}
done:
return rv;
}
NS_IMETHODIMP
nsDocLoaderImpl::SetDocumentFactory(nsIDocumentLoaderFactory* aFactory)
{
NS_IF_RELEASE(m_DocFactory);
m_DocFactory = aFactory;
NS_IF_ADDREF(m_DocFactory);
return NS_OK;
}
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;
/* 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;
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);
}
NS_IF_RELEASE(mStreamObserver);
mStreamObserver = anObserver;
NS_IF_ADDREF(mStreamObserver);
rv = loader->Bind(aURLSpec, aPostData, nsnull);
done:
return rv;
}
NS_IMETHODIMP
nsDocLoaderImpl::Stop(void)
{
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(...)
*/
NS_IF_RELEASE(mStreamObserver);
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::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, aBaseURL, aURLSpec, aContainer, this);
if (NS_SUCCEEDED(rv)) {
nsILoadAttribs* loadAttributes;
loadAttributes = url->GetLoadAttribs();
if (nsnull != loadAttributes) {
loadAttributes->Clone(m_LoadAttrib);
NS_RELEASE(loadAttributes);
}
}
*aInstancePtrResult = url;
}
return rv;
}
NS_IMETHODIMP
nsDocLoaderImpl::OpenStream(nsIURL *aUrl, nsIStreamListener *aConsumer)
{
nsresult rv;
nsDocumentBindInfo* loader = nsnull;
nsURLLoadType loadType = nsURLLoadNormal;
NS_NEWXPCOM(loader, nsDocumentBindInfo);
if (nsnull == loader) {
rv = NS_ERROR_OUT_OF_MEMORY;
goto done;
}
loader->Init(this, // DocLoader
nsnull, // Command
nsnull, // 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;
loadAttributes = aUrl->GetLoadAttribs();
if (nsnull != loadAttributes) {
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(m_LoadAttrib);
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;
}
void nsDocLoaderImpl::LoadURLComplete(nsIURL* aURL, nsISupports* aBindInfo, PRInt32 aStatus)
{
PRBool rv;
PRBool bIsForegroundURL = PR_FALSE;
/*
* If the entry is not found in the list, then it must have been cancelled
* via Stop(...). So ignore just it...
*/
rv = m_LoadingDocsList->RemoveElement(aBindInfo);
if (PR_FALSE != rv) {
nsILoadAttribs* loadAttributes;
nsURLLoadType loadType = nsURLLoadNormal;
loadAttributes = aURL->GetLoadAttribs();
if (nsnull != loadAttributes) {
rv = loadAttributes->GetLoadType(&loadType);
if (NS_FAILED(rv)) {
loadType = nsURLLoadNormal;
}
NS_RELEASE(loadAttributes);
}
if (nsURLLoadBackground != loadType) {
mForegroundURLs -= 1;
bIsForegroundURL = PR_TRUE;
}
mTotalURLs -= 1;
NS_ASSERTION((mTotalURLs >= mForegroundURLs), "Foreground URL count is wrong.");
/*
* If this was the last URL for the entire document (including any sub
* documents) then fire an OnConnectionsComplete(...) notification.
*
* If the URL was a background URL, then ignore it...
*/
if (PR_FALSE != bIsForegroundURL) {
PRBool bIsBusy;
IsBusy(bIsBusy);
if (! bIsBusy) {
PRInt32 count = mDocObservers.Count();
PRInt32 index;
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader [%p] - OnConnectionsComplete(...) called.\n", this));
for (index = 0; index < count; index++) {
nsIDocumentLoaderObserver* observer = (nsIDocumentLoaderObserver*)mDocObservers.ElementAt(index);
observer->OnConnectionsComplete();
}
}
}
}
}
void nsDocLoaderImpl::SetParent(nsDocLoaderImpl* aParent)
{
NS_IF_RELEASE(mParent);
mParent = aParent;
NS_IF_ADDREF(mParent);
}
PRBool nsDocLoaderImpl::StopBindInfoEnumerator(nsISupports* aElement, void* aData)
{
nsresult rv;
nsDocumentBindInfo* bindInfo;
rv = aElement->QueryInterface(kDocumentBindInfoIID, (void**)&bindInfo);
if (NS_OK == 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_OK == 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_OK == 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_ExtraInfo = aExtraInfo;
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.
*/
rv = m_DocLoader->CreateURL(&url, nsnull, aURLSpec, m_Container);
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_OK == rv) {
const char* data = aPostData->GetData();
if (aPostData->IsFile()) {
pts->SendDataFromFile(data);
}
else {
pts->SendData(data, aPostData->GetDataLength());
}
}
}
rv = Bind(url, aListener);
NS_RELEASE(url);
return rv;
}
nsresult nsDocumentBindInfo::Bind(nsIURL* aURL, nsIStreamListener* aListener)
{
nsresult rv = NS_OK;
nsINetService *inet = nsnull;
m_Url = aURL;
NS_ADDREF(m_Url);
/* Set up the stream listener (if provided)... */
if (nsnull != aListener) {
m_NextStream = aListener;
NS_ADDREF(m_NextStream);
}
/* Start the URL binding process... */
rv = nsServiceManager::GetService(kNetServiceCID,
kINetServiceIID,
(nsISupports **)&inet);
if (NS_OK == rv) {
rv = inet->OpenStream(m_Url, this);
nsServiceManager::ReleaseService(kNetServiceCID, inet);
}
return rv;
}
nsresult nsDocumentBindInfo::Stop(void)
{
nsresult rv;
nsINetService* inet;
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader - Stop(...) called for %s.\n", m_Url->GetSpec()));
/*
* 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... */
rv = nsServiceManager::GetService(kNetServiceCID,
kINetServiceIID,
(nsISupports **)&inet);
if (NS_SUCCEEDED(rv)) {
rv = inet->InterruptStream(m_Url);
nsServiceManager::ReleaseService(kNetServiceCID, inet);
}
return rv;
}
NS_METHOD nsDocumentBindInfo::GetBindInfo(nsIURL* aURL)
{
nsresult rv = NS_OK;
NS_PRECONDITION(nsnull !=m_NextStream, "DocLoader: No stream for document");
if (nsnull != m_NextStream) {
rv = m_NextStream->GetBindInfo(aURL);
}
return rv;
}
NS_METHOD nsDocumentBindInfo::OnProgress(nsIURL* aURL, PRInt32 aProgress,
PRInt32 aProgressMax)
{
nsresult rv = NS_OK;
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader - OnProgress(...) called for %s. Progress: %d. ProgressMax: %d\n",
aURL->GetSpec(), aProgress, aProgressMax));
/* 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 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 nsString& 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 the Observer... */
if (nsnull != m_Observer) {
/* XXX: Should we ignore the return value? */
(void) m_Observer->OnStatus(aURL, aMsg);
}
return rv;
}
NS_METHOD nsDocumentBindInfo::OnStartBinding(nsIURL* aURL, const char *aContentType)
{
nsresult rv = NS_OK;
nsIContentViewer* viewer = nsnull;
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader - OnStartBinding(...) called for %s. Content-type is %s\n",
aURL->GetSpec(), aContentType));
/* 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->m_DocFactory) {
rv = m_DocLoader->m_DocFactory->CreateInstance(m_Url,
aContentType,
m_Command,
m_Container,
&m_NextStream,
&viewer);
} else {
rv = NS_ERROR_NULL_POINTER;
}
if (NS_OK != rv) {
printf("DocLoaderFactory: Unable to create ContentViewer for content-type: %s\n", aContentType);
goto done;
}
/*
* Give the document container the new viewer...
*/
viewer->SetContainer(m_Container);
rv = m_Container->Embed(viewer, m_Command, m_ExtraInfo);
if (NS_OK != rv) {
goto done;
}
}
/*
* Pass the OnStartBinding(...) notification out to the document
* IStreamListener.
*/
NS_ASSERTION((nsnull != m_NextStream), "No stream was created!");
if (nsnull != m_NextStream) {
rv = m_NextStream->OnStartBinding(aURL, aContentType);
}
/* Pass the notification out to the Observer... */
if (nsnull != m_Observer) {
/* XXX: Should we ignore the return value? */
(void) m_Observer->OnStartBinding(aURL, aContentType);
}
done:
NS_IF_RELEASE(viewer);
return rv;
}
NS_METHOD nsDocumentBindInfo::OnDataAvailable(nsIURL* aURL,
nsIInputStream *aStream, PRInt32 aLength)
{
nsresult rv = NS_OK;
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader - OnDataAvailable(...) called for %s. Bytes available: %d.\n",
aURL->GetSpec(), aLength));
/* If the binding has been canceled via Stop() then abort the load... */
if (NS_BINDING_ABORTED == mStatus) {
rv = NS_BINDING_ABORTED;
goto done;
}
NS_PRECONDITION(nsnull !=m_NextStream, "DocLoader: No stream for document");
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);
}
done:
return rv;
}
NS_METHOD nsDocumentBindInfo::OnStopBinding(nsIURL* aURL, PRInt32 aStatus,
const nsString& aMsg)
{
nsresult rv = NS_OK;
PR_LOG(gDocLoaderLog, PR_LOG_DEBUG,
("DocLoader - OnStopBinding(...) called for %s. Status: %d.\n",
aURL->GetSpec(), aStatus));
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 (rv != NS_OK) {
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 (rv != NS_OK) {
PR_FALSE;
}
rv = refresher->CancelRefreshURLTimers();
NS_RELEASE(refresher);
return rv;
}
return PR_FALSE;
}
/*******************************************
* nsDocLoaderFactory
*******************************************/
static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
static NS_DEFINE_IID(kCDocumentLoader, NS_DOCUMENTLOADER_CID);
class nsDocumentLoaderFactory : public nsIFactory
{
public:
nsDocumentLoaderFactory();
NS_DECL_ISUPPORTS
// nsIFactory methods
NS_IMETHOD CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
protected:
virtual ~nsDocumentLoaderFactory();
};
nsDocumentLoaderFactory::nsDocumentLoaderFactory()
{
NS_INIT_REFCNT();
}
nsDocumentLoaderFactory::~nsDocumentLoaderFactory()
{
}
/*
* Implementation of ISupports methods...
*/
NS_IMPL_ISUPPORTS(nsDocumentLoaderFactory,kIFactoryIID);
NS_IMETHODIMP
nsDocumentLoaderFactory::CreateInstance(nsISupports* aOuter,
const nsIID& aIID,
void** aResult)
{
nsresult rv;
nsIDocumentLoader* inst;
static nsDocLoaderImpl* gGlobalDocLoader = nsnull;
if (nsnull == aResult) {
rv = NS_ERROR_NULL_POINTER;
goto done;
}
*aResult = nsnull;
if (nsnull != aOuter) {
rv = NS_ERROR_NO_AGGREGATION;
goto done;
}
if (nsnull == gGlobalDocLoader) {
NS_NEWXPCOM(gGlobalDocLoader, nsDocLoaderImpl);
if (nsnull == gGlobalDocLoader) {
rv = NS_ERROR_OUT_OF_MEMORY;
goto done;
}
NS_ADDREF(gGlobalDocLoader); // RefCount = 1
}
rv = gGlobalDocLoader->CreateDocumentLoader(&inst);
if (NS_OK != rv) {
rv = NS_ERROR_OUT_OF_MEMORY;
goto done;
}
*aResult = inst;
done:
return rv;
}
NS_IMETHODIMP
nsDocumentLoaderFactory::LockFactory(PRBool aLock)
{
// Not implemented in simplest case.
return NS_OK;
}
extern "C" NS_WEB nsresult
NS_NewDocumentLoaderFactory(nsIFactory** aFactory)
{
if (nsnull == aFactory) {
return NS_ERROR_NULL_POINTER;
}
nsDocumentLoaderFactory* it;
NS_NEWXPCOM(it, nsDocumentLoaderFactory);
*aFactory = it;
if (nsnull == *aFactory) {
return NS_ERROR_OUT_OF_MEMORY;
}
NS_ADDREF(*aFactory);
return NS_OK;
}
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