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gecko-dev/xpfe/components/directory/nsDirectoryViewer.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* 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.
*/
/*
A directory viewer object. Parses "application/http-index-format"
per Lou Montulli's original spec:
http://www.area.com/~roeber/file_format.html
*/
#include "jsapi.h"
#include "nsCOMPtr.h"
#include "nsEscape.h"
#include "nsNeckoUtil.h"
#include "nsIContentViewer.h"
#include "nsIContentViewerContainer.h"
#include "nsIDocument.h"
#include "nsIDocumentLoader.h"
#include "nsIDocumentViewer.h"
#include "nsIEnumerator.h"
#include "nsIGenericFactory.h"
#include "nsIHTTPIndex.h"
#include "nsIRDFContainer.h"
#include "nsIRDFContainerUtils.h"
#include "nsIRDFDataSource.h"
#include "nsIRDFService.h"
#include "nsIScriptContext.h"
#include "nsIScriptContextOwner.h"
#include "nsIServiceManager.h"
#include "nsISupportsArray.h"
#include "nsIXPConnect.h"
#include "nsEnumeratorUtils.h"
#include "nsRDFCID.h"
#include "nsString.h"
#include "nsVoidArray.h"
#include "nsXPIDLString.h"
#include "rdf.h"
////////////////////////////////////////////////////////////////////////
// Common CIDs
// {82776710-5690-11d3-BE36-00104BDE6048}
#define NS_DIRECTORYVIEWERFACTORY_CID \
{ 0x82776710, 0x5690, 0x11d3, { 0xbe, 0x36, 0x0, 0x10, 0x4b, 0xde, 0x60, 0x48 } }
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kDirectoryViewerFactoryCID, NS_DIRECTORYVIEWERFACTORY_CID);
static NS_DEFINE_CID(kGenericFactoryCID, NS_GENERICFACTORY_CID);
static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
#define HTTPINDEX_NAMESPACE_URI "urn:http-index-format:"
////////////////////////////////////////////////////////////////////////
// nsHTTPIndex
class nsHTTPIndex : public nsIHTTPIndex
{
protected:
// We grab a reference to the content viewer container (which
// indirectly owns us) so that we can insert ourselves as a global
// in the script context _after_ the XUL doc has been embedded into
// content viewer. We'll know that this has happened once we receive
// an OnStartRequest() notification
nsIContentViewerContainer* mContainer; // [WEAK]
nsCString mBaseURL;
nsCOMPtr<nsIRDFDataSource> mDataSource;
nsHTTPIndex(nsIContentViewerContainer* aContainer);
nsresult Init(nsIURI* aBaseURL);
virtual ~nsHTTPIndex();
public:
static nsresult Create(nsIURI* aBaseURI, nsIContentViewerContainer* aContainer, nsIHTTPIndex** aResult);
// nsISupports interface
NS_DECL_ISUPPORTS
// nsIHTTPIndex interface
NS_IMETHOD GetBaseURL(char** _result);
NS_IMETHOD GetDataSource(nsIRDFDataSource** _result);
NS_IMETHOD CreateListener(nsIStreamListener** _result);
};
////////////////////////////////////////////////////////////////////////
// nsHTTPIndexParser
//
class nsHTTPIndexParser : public nsIStreamListener
{
protected:
static nsrefcnt gRefCnt;
static nsIRDFService* gRDF;
static nsIRDFResource* kHTTPIndex_Comment;
static nsIRDFResource* kHTTPIndex_Filename;
struct Field {
const char* mName;
nsIRDFResource* mResource;
};
static Field gFieldTable[];
nsHTTPIndex* mHTTPIndex; // [WEAK]
nsCOMPtr<nsIRDFDataSource> mDataSource;
nsCOMPtr<nsIURI> mDirectoryURI;
nsCOMPtr<nsIRDFResource> mDirectory;
nsCOMPtr<nsIRDFContainer> mDirectoryContainer;
nsCAutoString mLine;
nsresult ProcessOneLine();
nsresult ParseFormat(const char* aFormatStr);
nsresult ParseData(const char* aDataStr);
nsAutoString mComment;
nsVoidArray mFormat;
nsHTTPIndexParser(nsHTTPIndex* aHTTPIndex, nsIContentViewerContainer* aContainer);
nsresult Init();
virtual ~nsHTTPIndexParser();
// If this is set, then we need to bind the nsIHTTPIndex object to
// the global object when we get an OnStartRequest() notification
// (at this point, we'll know that the XUL document has been
// embedded and the global object won't get clobbered.
nsIContentViewerContainer* mContainer;
public:
static nsresult Create(nsHTTPIndex* aHTTPIndex,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aResult);
// nsISupports interface
NS_DECL_ISUPPORTS
// nsIStreamObserver interface
NS_IMETHOD OnStartRequest(nsIChannel* aChannel, nsISupports* aContext);
NS_IMETHOD OnStopRequest(nsIChannel* aChannel,
nsISupports* aContext,
nsresult aStatus,
const PRUnichar* aErrorMsg);
// nsIStreamListener interface
NS_IMETHOD OnDataAvailable(nsIChannel* aChannel,
nsISupports* aContext,
nsIInputStream* aStream,
PRUint32 aSourceOffset,
PRUint32 aCount);
};
nsrefcnt nsHTTPIndexParser::gRefCnt = 0;
nsIRDFService* nsHTTPIndexParser::gRDF;
nsIRDFResource* nsHTTPIndexParser::kHTTPIndex_Comment;
nsIRDFResource* nsHTTPIndexParser::kHTTPIndex_Filename;
nsHTTPIndexParser::Field
nsHTTPIndexParser::gFieldTable[] = {
{ "Filename", nsnull },
{ "Content-Length", nsnull },
{ "Last-Modified", nsnull },
{ "Content-Type", nsnull },
{ "File-Type", nsnull },
{ "Permissions", nsnull },
{ nsnull, nsnull },
};
nsHTTPIndexParser::nsHTTPIndexParser(nsHTTPIndex* aHTTPIndex, nsIContentViewerContainer* aContainer)
: mHTTPIndex(aHTTPIndex),
mContainer(aContainer)
{
NS_INIT_REFCNT();
}
nsresult
nsHTTPIndexParser::Init()
{
NS_PRECONDITION(mHTTPIndex != nsnull, "not initialized");
if (! mHTTPIndex)
return NS_ERROR_NOT_INITIALIZED;
nsresult rv;
rv = mHTTPIndex->GetDataSource(getter_AddRefs(mDataSource));
if (NS_FAILED(rv)) return rv;
if (gRefCnt++ == 0) {
rv = nsServiceManager::GetService("component://netscape/rdf/rdf-service",
nsCOMTypeInfo<nsIRDFService>::GetIID(),
NS_REINTERPRET_CAST(nsISupports**, &gRDF));
if (NS_FAILED(rv)) return rv;
rv = gRDF->GetResource(HTTPINDEX_NAMESPACE_URI "Comment", &kHTTPIndex_Comment);
if (NS_FAILED(rv)) return rv;
rv = gRDF->GetResource(HTTPINDEX_NAMESPACE_URI "Filename", &kHTTPIndex_Filename);
if (NS_FAILED(rv)) return rv;
for (Field* field = gFieldTable; field->mName; ++field) {
nsCAutoString str;
str += HTTPINDEX_NAMESPACE_URI;
str += field->mName;
rv = gRDF->GetResource(str, &field->mResource);
if (NS_FAILED(rv)) return rv;
}
}
return NS_OK;
}
nsHTTPIndexParser::~nsHTTPIndexParser()
{
if (--gRefCnt == 0) {
NS_IF_RELEASE(kHTTPIndex_Comment);
NS_IF_RELEASE(kHTTPIndex_Filename);
for (Field* field = gFieldTable; field->mName; ++field) {
NS_IF_RELEASE(field->mResource);
}
nsServiceManager::ReleaseService("component://netscape/rdf/rdf-service", gRDF);
}
}
nsresult
nsHTTPIndexParser::Create(nsHTTPIndex* aHTTPIndex,
nsIContentViewerContainer* aContainer,
nsIStreamListener** aResult)
{
NS_PRECONDITION(aHTTPIndex != nsnull, "null ptr");
if (! aHTTPIndex)
return NS_ERROR_NULL_POINTER;
nsHTTPIndexParser* result = new nsHTTPIndexParser(aHTTPIndex, aContainer);
if (! result)
return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = result->Init();
if (NS_FAILED(rv)) {
delete result;
return rv;
}
NS_ADDREF(result);
*aResult = result;
return NS_OK;
}
NS_IMPL_ADDREF(nsHTTPIndexParser);
NS_IMPL_RELEASE(nsHTTPIndexParser);
NS_IMETHODIMP
nsHTTPIndexParser::QueryInterface(REFNSIID aIID, void** aResult)
{
NS_PRECONDITION(aResult != nsnull, "null ptr");
if (! aResult)
return NS_OK;
if (aIID.Equals(nsCOMTypeInfo<nsIStreamListener>::GetIID()) ||
aIID.Equals(nsCOMTypeInfo<nsIStreamObserver>::GetIID()) ||
aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID())) {
*aResult = NS_STATIC_CAST(nsIStreamListener*, this);
NS_ADDREF(this);
return NS_OK;
}
else {
*aResult = nsnull;
return NS_NOINTERFACE;
}
}
NS_IMETHODIMP
nsHTTPIndexParser::OnStartRequest(nsIChannel* aChannel, nsISupports* aContext)
{
nsresult rv;
if (mContainer) {
// We need to undo the AddRef() on the nsHTTPIndex objectthat
// happened in nsDirectoryViewerFactory::CreateInstance(). We'll
// stuff it into an nsCOMPtr (because we _know_ it'll get release
// if any errors occur)...
nsCOMPtr<nsIHTTPIndex> httpindex = do_QueryInterface(mHTTPIndex);
// ...and then _force_ a release here
mHTTPIndex->Release();
// Now get the content viewer container's script object.
nsCOMPtr<nsIScriptContextOwner> contextowner;
rv = mContainer->QueryCapability(nsCOMTypeInfo<nsIScriptContextOwner>::GetIID(),
getter_AddRefs(contextowner));
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get script context owner from document");
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIScriptContext> context;
rv = contextowner->GetScriptContext(getter_AddRefs(context));
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get script context");
if (NS_FAILED(rv)) return rv;
JSContext* jscontext = NS_REINTERPRET_CAST(JSContext*, context->GetNativeContext());
// Using XPConnect, wrap the HTTP index object...
static NS_DEFINE_CID(kXPConnectCID, NS_XPCONNECT_CID);
NS_WITH_SERVICE(nsIXPConnect, xpc, kXPConnectCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIXPConnectWrappedNative> wrapper;
rv = xpc->WrapNative(jscontext,
httpindex,
nsCOMTypeInfo<nsIHTTPIndex>::GetIID(),
getter_AddRefs(wrapper));
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to xpconnect-wrap http-index");
if (NS_FAILED(rv)) return rv;
JSObject* jsobj;
rv = wrapper->GetJSObject(&jsobj);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get jsobj from xpconnect wrapper");
if (NS_FAILED(rv)) return rv;
jsval jslistener = OBJECT_TO_JSVAL(jsobj);
// ...and stuff it into the global context
PRBool ok;
JSObject* global = JS_GetGlobalObject(jscontext);
ok = JS_SetProperty(jscontext, global, "HTTPIndex", &jslistener);
NS_ASSERTION(ok, "unable to set Listener property");
if (! ok)
return NS_ERROR_FAILURE;
}
// Save off some information about the stream we're about to parse.
rv = aChannel->GetURI(getter_AddRefs(mDirectoryURI));
if (NS_FAILED(rv)) return rv;
nsXPIDLCString uristr;
rv = mDirectoryURI->GetSpec(getter_Copies(uristr));
if (NS_FAILED(rv)) return rv;
rv = gRDF->GetResource(uristr, getter_AddRefs(mDirectory));
if (NS_FAILED(rv)) return rv;
NS_WITH_SERVICE(nsIRDFContainerUtils, rdfc, "component://netscape/rdf/container-utils", &rv);
if (NS_FAILED(rv)) return rv;
rv = rdfc->MakeSeq(mDataSource, mDirectory, getter_AddRefs(mDirectoryContainer));
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndexParser::OnStopRequest(nsIChannel* aChannel,
nsISupports* aContext,
nsresult aStatus,
const PRUnichar* aErrorMsg)
{
if (mLine.Length() > 0)
ProcessOneLine();
nsresult rv;
nsCOMPtr<nsIRDFLiteral> comment;
rv = gRDF->GetLiteral(mComment.GetUnicode(), getter_AddRefs(comment));
if (NS_FAILED(rv)) return rv;
rv = mDataSource->Assert(mDirectory, kHTTPIndex_Comment, comment, PR_TRUE);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndexParser::OnDataAvailable(nsIChannel* aChannel,
nsISupports* aContext,
nsIInputStream* aStream,
PRUint32 aSourceOffset,
PRUint32 aCount)
{
nsresult rv;
while (aCount > 0) {
char buf[128];
PRUint32 count = (aCount > sizeof(buf)) ? sizeof(buf) : aCount;
PRUint32 nread;
rv = aStream->Read(buf, count, &nread);
if (NS_FAILED(rv)) return rv;
char* p = buf;
while (nread != 0) {
mLine.Append(*p);
if (*p == '\n') {
rv = ProcessOneLine();
NS_ASSERTION(NS_SUCCEEDED(rv), "error processing http-index line");
if (NS_FAILED(rv)) return rv;
mLine.Truncate();
}
++p;
--nread;
}
}
return NS_OK;
}
nsresult
nsHTTPIndexParser::ProcessOneLine()
{
if (mLine.Length() >= 4) {
nsresult rv;
const char* buf = mLine;
if (buf[0] == '1') {
if (buf[1] == '0') {
if (buf[2] == '0' && buf[3] == ':') {
// 100. Human-readable comment line. Ignore
}
else if (buf[2] == '1' && buf[3] == ':') {
// 101. Human-readable information line.
mComment += (buf + 4);
}
else if (buf[2] == '2' && buf[3] == ':') {
// 102. Human-readable information line, HTML.
mComment += (buf + 4);
}
}
}
else if (buf[0] == '2') {
if (buf[1] == '0') {
if (buf[2] == '0' && buf[3] == ':') {
// 200. Define field names
rv = ParseFormat(buf + 4);
if (NS_FAILED(rv)) return rv;
}
else if (buf[2] == '1' && buf[3] == ':') {
// 201. Field data
rv = ParseData(buf + 4);
if (NS_FAILED(rv)) return rv;
}
}
}
else if (buf[0] == '3') {
if (buf[1] == '0') {
if (buf[2] == '0' && buf[3] == ':') {
// 300. Self-referring URL
}
}
}
}
return NS_OK;
}
nsresult
nsHTTPIndexParser::ParseFormat(const char* aFormatStr)
{
// Parse a "200" format line, and remember the fields and their
// ordering in mFormat. Multiple 200 lines stomp on each other.
mFormat.Clear();
do {
while (*aFormatStr && nsString::IsSpace(PRUnichar(*aFormatStr)))
++aFormatStr;
if (! aFormatStr)
break;
nsCAutoString name;
while (*aFormatStr && !nsString::IsSpace(PRUnichar(*aFormatStr)))
name.Append(*aFormatStr++);
// Okay, we're gonna monkey with the nsStr. Bold!
name.mLength = nsUnescapeCount(name.mStr);
nsIRDFResource* resource = nsnull;
for (Field* field = gFieldTable; field->mName; ++field) {
if (name.EqualsIgnoreCase(field->mName)) {
resource = field->mResource;
break;
}
}
mFormat.AppendElement(resource);
} while (*aFormatStr);
return NS_OK;
}
#define MAX_AUTO_VALUES 8
nsresult
nsHTTPIndexParser::ParseData(const char* aDataStr)
{
// Parse a "201" data line, using the field ordering specified in
// mFormat.
if (mFormat.Count() == 0) {
// Ignore if we haven't seen a format yet.
return NS_OK;
}
// Because the 'file:' protocol won't do this for us, we need to
// make sure that the mDirectoryURI ends with a '/' before
// concatenating.
nsresult rv;
nsCOMPtr<nsIURI> realbase;
{
nsXPIDLCString orig;
rv = mDirectoryURI->GetSpec(getter_Copies(orig));
if (NS_FAILED(rv)) return rv;
nsCAutoString basestr(orig);
if (basestr.Last() != '/')
basestr.Append('/');
rv = NS_NewURI(getter_AddRefs(realbase), (const char*) basestr);
if (NS_FAILED(rv)) return rv;
}
// First, we'll iterate through the values and remember each (using
// an array of autostrings allocated on the stack, if possible). We
// have to do this, because we don't know up-front the filename for
// which this 201 refers.
nsAutoString autovalues[MAX_AUTO_VALUES];
nsAutoString* values = autovalues;
if (mFormat.Count() > MAX_AUTO_VALUES) {
values = new nsAutoString[mFormat.Count()];
if (! values)
return NS_ERROR_OUT_OF_MEMORY;
}
rv = NS_OK;
nsCOMPtr<nsIRDFResource> entry;
for (PRInt32 field = 0; field < mFormat.Count(); ++field) {
// If we've exhausted the data before we run out of fields, just
// bail.
if (! *aDataStr)
break;
while (*aDataStr && nsString::IsSpace(PRUnichar(*aDataStr)))
++aDataStr;
nsCAutoString value;
if (*aDataStr == '"' || *aDataStr == '\'') {
// it's a quoted string. snarf everything up to the next quote character
const char quotechar = *(aDataStr++);
while (*aDataStr && *aDataStr != quotechar)
value.Append(*aDataStr++);
if (! aDataStr) {
NS_WARNING("quoted value not terminated");
}
}
else {
// it's unquoted. snarf until we see whitespace.
while (*aDataStr && !nsString::IsSpace(*aDataStr))
value.Append(*aDataStr++);
}
// Monkey with the nsStr, because we're bold.
value.mLength = nsUnescapeCount(value.mStr);
values[field] = value;
if (mFormat.ElementAt(field) == kHTTPIndex_Filename) {
// we found the filename; construct a resource for its entry
nsAutoString entryuri;
rv = NS_MakeAbsoluteURI(value, realbase, entryuri);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable make absolute URI");
if (NS_FAILED(rv)) break;
rv = gRDF->GetResource(nsCAutoString(entryuri), getter_AddRefs(entry));
}
}
// At this point, we'll (hopefully) have found the filename and
// constructed a resource for it, stored in entry. So now take a
// second pass through the values and add as statements to the RDF
// datasource.
if (entry && NS_SUCCEEDED(rv)) {
for (PRInt32 indx = 0; indx < mFormat.Count(); ++indx) {
nsIRDFResource* property = NS_REINTERPRET_CAST(nsIRDFResource*, mFormat.ElementAt(indx));
if (! property)
continue;
nsCOMPtr<nsIRDFLiteral> value;
rv = gRDF->GetLiteral(values[indx].GetUnicode(), getter_AddRefs(value));
if (NS_FAILED(rv)) break;
rv = mDataSource->Assert(entry, property, value, PR_TRUE);
if (NS_FAILED(rv)) break;
}
rv = mDirectoryContainer->AppendElement(entry);
}
// If we needed to spill values onto the heap, make sure we clean up
// here.
if (values != autovalues)
delete[] values;
return rv;
}
////////////////////////////////////////////////////////////////////////
// nsHTTPIndex implementation
nsHTTPIndex::nsHTTPIndex(nsIContentViewerContainer* aContainer)
: mContainer(aContainer)
{
NS_INIT_REFCNT();
}
nsresult
nsHTTPIndex::Init(nsIURI* aBaseURL)
{
NS_PRECONDITION(aBaseURL != nsnull, "null ptr");
if (! aBaseURL)
return NS_ERROR_NULL_POINTER;
nsresult rv;
nsXPIDLCString url;
rv = aBaseURL->GetSpec(getter_Copies(url));
if (NS_FAILED(rv)) return rv;
mBaseURL = url;
static NS_DEFINE_CID(kRDFInMemoryDataSourceCID, NS_RDFINMEMORYDATASOURCE_CID);
rv = nsComponentManager::CreateInstance(kRDFInMemoryDataSourceCID, nsnull,
nsCOMTypeInfo<nsIRDFDataSource>::GetIID(),
getter_AddRefs(mDataSource));
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
nsresult
nsHTTPIndex::Create(nsIURI* aBaseURL, nsIContentViewerContainer* aContainer, nsIHTTPIndex** aResult)
{
nsHTTPIndex* result = new nsHTTPIndex(aContainer);
if (! result)
return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = result->Init(aBaseURL);
if (NS_FAILED(rv)) {
delete result;
return rv;
}
NS_ADDREF(result);
*aResult = result;
return NS_OK;
}
nsHTTPIndex::~nsHTTPIndex()
{
}
NS_IMPL_ADDREF(nsHTTPIndex);
NS_IMPL_RELEASE(nsHTTPIndex);
NS_IMETHODIMP
nsHTTPIndex::QueryInterface(REFNSIID aIID, void** aResult)
{
NS_PRECONDITION(aResult != nsnull, "null ptr");
if (! aResult)
return NS_OK;
if (aIID.Equals(nsCOMTypeInfo<nsIHTTPIndex>::GetIID()) ||
aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID())) {
*aResult = NS_STATIC_CAST(nsIHTTPIndex*, this);
NS_ADDREF(this);
return NS_OK;
}
else {
*aResult = nsnull;
return NS_NOINTERFACE;
}
}
NS_IMETHODIMP
nsHTTPIndex::GetBaseURL(char** _result)
{
*_result = nsXPIDLCString::Copy(mBaseURL);
if (! *_result)
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndex::GetDataSource(nsIRDFDataSource** _result)
{
*_result = mDataSource;
NS_IF_ADDREF(*_result);
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndex::CreateListener(nsIStreamListener** _result)
{
nsresult rv;
rv = nsHTTPIndexParser::Create(this, mContainer, _result);
if (NS_FAILED(rv)) return rv;
// Clear this: we only need to pass it through once.
mContainer = nsnull;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////
// nsDirectoryViewerFactory
//
class nsDirectoryViewerFactory : public nsIDocumentLoaderFactory
{
protected:
nsDirectoryViewerFactory();
virtual ~nsDirectoryViewerFactory();
public:
// constructor
static NS_IMETHODIMP
Create(nsISupports* aOuter, REFNSIID aIID, void** aResult);
// nsISupports interface
NS_DECL_ISUPPORTS
// nsIDocumentLoaderFactory interface
NS_IMETHOD CreateInstance(const char *aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
const char* aContentType,
nsIContentViewerContainer* aContainer,
nsISupports* aExtraInfo,
nsIStreamListener** aDocListenerResult,
nsIContentViewer** aDocViewerResult);
NS_IMETHOD CreateInstanceForDocument(nsIContentViewerContainer* aContainer,
nsIDocument* aDocument,
const char *aCommand,
nsIContentViewer** aDocViewerResult);
};
nsDirectoryViewerFactory::nsDirectoryViewerFactory()
{
NS_INIT_REFCNT();
}
nsDirectoryViewerFactory::~nsDirectoryViewerFactory()
{
}
NS_IMETHODIMP
nsDirectoryViewerFactory::Create(nsISupports* aOuter, REFNSIID aIID, void** aResult)
{
NS_PRECONDITION(aOuter == nsnull, "no aggregation");
if (aOuter)
return NS_ERROR_NO_AGGREGATION;
nsDirectoryViewerFactory* result
= new nsDirectoryViewerFactory();
if (! result)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(result); // stabilize
nsresult rv = result->QueryInterface(aIID, aResult);
NS_RELEASE(result);
return rv;
}
NS_IMPL_ADDREF(nsDirectoryViewerFactory);
NS_IMPL_RELEASE(nsDirectoryViewerFactory);
NS_IMETHODIMP
nsDirectoryViewerFactory::QueryInterface(REFNSIID aIID, void** aResult)
{
NS_PRECONDITION(aResult != nsnull, "null ptr");
if (! aResult)
return NS_ERROR_NULL_POINTER;
if (aIID.Equals(nsCOMTypeInfo<nsIDocumentLoaderFactory>::GetIID()) ||
aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID())) {
*aResult = NS_STATIC_CAST(nsIDocumentLoaderFactory*, this);
}
else {
*aResult = nsnull;
return NS_ERROR_NO_INTERFACE;
}
NS_ADDREF(this);
return NS_OK;
}
NS_IMETHODIMP
nsDirectoryViewerFactory::CreateInstance(const char *aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
const char* aContentType,
nsIContentViewerContainer* aContainer,
nsISupports* aExtraInfo,
nsIStreamListener** aDocListenerResult,
nsIContentViewer** aDocViewerResult)
{
nsresult rv;
// Create a dummy loader that will load a stub XUL document.
nsCOMPtr<nsIDocumentLoaderFactory> factory;
rv = nsComponentManager::CreateInstance(NS_DOCUMENT_LOADER_FACTORY_PROGID_PREFIX "view/text/xul",
nsnull,
nsCOMTypeInfo<nsIDocumentLoaderFactory>::GetIID(),
getter_AddRefs(factory));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIURI> uri;
rv = NS_NewURI(getter_AddRefs(uri), "chrome://directory/content/");
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> channel;
rv = NS_OpenURI(getter_AddRefs(channel), uri);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStreamListener> listener;
rv = factory->CreateInstance("view", channel, aLoadGroup, "text/xul",
aContainer, aExtraInfo, getter_AddRefs(listener),
aDocViewerResult);
if (NS_FAILED(rv)) return rv;
rv = channel->AsyncRead(0, -1, nsnull, listener);
if (NS_FAILED(rv)) return rv;
// Create an HTTPIndex object so that we can stuff it into the script context
nsCOMPtr<nsIURI> baseuri;
rv = aChannel->GetURI(getter_AddRefs(baseuri));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIHTTPIndex> httpindex;
rv = nsHTTPIndex::Create(baseuri, aContainer, getter_AddRefs(httpindex));
if (NS_FAILED(rv)) return rv;
// Now shanghai the stream into our http-index parsing datasource
// wrapper beastie.
rv = httpindex->CreateListener(aDocListenerResult);
if (NS_FAILED(rv)) return rv;
// addref the nsIHTTPIndex so that it'll live long enough to get
// added to the embedder's script global object; this happens when
// the stream's OnStartRequest() is called. (We can feel safe that
// this'll happen because of the flow-of-control in nsWebShell.cpp)
nsIHTTPIndex* dummy = httpindex;
NS_ADDREF(dummy);
return NS_OK;
}
NS_IMETHODIMP
nsDirectoryViewerFactory::CreateInstanceForDocument(nsIContentViewerContainer* aContainer,
nsIDocument* aDocument,
const char *aCommand,
nsIContentViewer** aDocViewerResult)
{
NS_NOTYETIMPLEMENTED("didn't expect to get here");
return NS_ERROR_NOT_IMPLEMENTED;
}
////////////////////////////////////////////////////////////////////////
// Component Exports
extern "C" PR_IMPLEMENT(nsresult)
NSGetFactory(nsISupports* aServiceMgr,
const nsCID &aClass,
const char *aClassName,
const char *aProgID,
nsIFactory **aFactory)
{
NS_PRECONDITION(aFactory != nsnull, "null ptr");
if (! aFactory)
return NS_ERROR_NULL_POINTER;
nsIGenericFactory::ConstructorProcPtr constructor;
if (aClass.Equals(kDirectoryViewerFactoryCID)) {
constructor = nsDirectoryViewerFactory::Create;
}
else {
*aFactory = nsnull;
return NS_NOINTERFACE; // XXX
}
nsresult rv;
NS_WITH_SERVICE1(nsIComponentManager, compMgr, aServiceMgr, kComponentManagerCID, &rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIGenericFactory> factory;
rv = compMgr->CreateInstance(kGenericFactoryCID,
nsnull,
nsIGenericFactory::GetIID(),
getter_AddRefs(factory));
if (NS_FAILED(rv)) return rv;
rv = factory->SetConstructor(constructor);
if (NS_FAILED(rv)) return rv;
*aFactory = factory;
NS_ADDREF(*aFactory);
return NS_OK;
}
extern "C" PR_IMPLEMENT(nsresult)
NSRegisterSelf(nsISupports* aServMgr , const char* aPath)
{
nsresult rv;
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
if (NS_FAILED(rv)) return rv;
NS_WITH_SERVICE1(nsIComponentManager, compMgr, servMgr, kComponentManagerCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kDirectoryViewerFactoryCID, "Global History",
NS_DOCUMENT_LOADER_FACTORY_PROGID_PREFIX "view/application/http-index-format",
aPath, PR_TRUE, PR_TRUE);
return NS_OK;
}
extern "C" PR_IMPLEMENT(nsresult)
NSUnregisterSelf(nsISupports* aServMgr, const char* aPath)
{
nsresult rv;
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
if (NS_FAILED(rv)) return rv;
NS_WITH_SERVICE1(nsIComponentManager, compMgr, servMgr, kComponentManagerCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kDirectoryViewerFactoryCID, aPath);
return NS_OK;
}
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