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RetroZilla/xpfe/components/directory/nsDirectoryViewer.cpp
Ryan Nematz 2f2ae146c0 first commit
2015-10-20 23:03:22 -04:00

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (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/MPL/
*
* 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 the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Chris Waterson <waterson@netscape.com>
* Robert John Churchill <rjc@netscape.com>
* Pierre Phaneuf <pp@ludusdesign.com>
* Bradley Baetz <bbaetz@student.usyd.edu.au>
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
/*
A directory viewer object. Parses "application/http-index-format"
per Lou Montulli's original spec:
http://www.mozilla.org/projects/netlib/dirindexformat.html
One added change is for a description entry, for when the
target does not match the filename (ie gopher)
*/
#include "nsDirectoryViewer.h"
#include "nsIDirIndex.h"
#include "jsapi.h"
#include "nsCOMPtr.h"
#include "nsCRT.h"
#include "nsEscape.h"
#include "nsIDocumentLoader.h"
#include "nsIEnumerator.h"
#include "nsIRDFService.h"
#include "nsIScriptContext.h"
#include "nsIScriptGlobalObject.h"
#include "nsIServiceManager.h"
#include "nsISupportsArray.h"
#include "nsIXPConnect.h"
#include "nsEnumeratorUtils.h"
#include "nsRDFCID.h"
#include "nsString.h"
#include "nsXPIDLString.h"
#include "nsReadableUtils.h"
#include "rdf.h"
#include "nsITextToSubURI.h"
#include "nsIInterfaceRequestor.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIFTPChannel.h"
#include "nsIWindowWatcher.h"
#include "nsIPrompt.h"
#include "nsIAuthPrompt.h"
#include "nsIProgressEventSink.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowInternal.h"
#include "nsIDOMWindowCollection.h"
#include "nsIDOMDocument.h"
#include "nsIDOMElement.h"
#include "nsIDOMText.h"
#include "nsIPrefService.h"
#include "nsIPrefBranch.h"
#include "nsIStreamConverterService.h"
#include "nsICategoryManager.h"
#include "nsXPCOMCID.h"
static const int FORMAT_HTML = 2;
static const int FORMAT_XUL = 3;
//----------------------------------------------------------------------
//
// Common CIDs
//
static NS_DEFINE_CID(kRDFServiceCID, NS_RDFSERVICE_CID);
// Various protocols we have to special case
static const char kFTPProtocol[] = "ftp://";
static const char kGopherProtocol[] = "gopher://";
//----------------------------------------------------------------------
//
// nsHTTPIndex
//
NS_IMPL_THREADSAFE_ISUPPORTS7(nsHTTPIndex,
nsIHTTPIndex,
nsIRDFDataSource,
nsIStreamListener,
nsIDirIndexListener,
nsIRequestObserver,
nsIInterfaceRequestor,
nsIFTPEventSink)
NS_IMETHODIMP
nsHTTPIndex::GetInterface(const nsIID &anIID, void **aResult )
{
if (anIID.Equals(NS_GET_IID(nsIFTPEventSink))) {
// If we don't have a container to store the logged data
// then don't report ourselves back to the caller
if (!mRequestor)
return NS_ERROR_NO_INTERFACE;
*aResult = NS_STATIC_CAST(nsIFTPEventSink*, this);
NS_ADDREF(this);
return NS_OK;
}
if (anIID.Equals(NS_GET_IID(nsIPrompt))) {
if (!mRequestor)
return NS_ERROR_NO_INTERFACE;
nsCOMPtr<nsIDOMWindow> aDOMWindow = do_GetInterface(mRequestor);
if (!aDOMWindow)
return NS_ERROR_NO_INTERFACE;
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
return wwatch->GetNewPrompter(aDOMWindow, (nsIPrompt**)aResult);
}
if (anIID.Equals(NS_GET_IID(nsIAuthPrompt))) {
if (!mRequestor)
return NS_ERROR_NO_INTERFACE;
nsCOMPtr<nsIDOMWindow> aDOMWindow = do_GetInterface(mRequestor);
if (!aDOMWindow)
return NS_ERROR_NO_INTERFACE;
nsCOMPtr<nsIWindowWatcher> wwatch(do_GetService(NS_WINDOWWATCHER_CONTRACTID));
return wwatch->GetNewAuthPrompter(aDOMWindow, (nsIAuthPrompt**)aResult);
}
if (anIID.Equals(NS_GET_IID(nsIProgressEventSink))) {
if (!mRequestor)
return NS_ERROR_NO_INTERFACE;
nsCOMPtr<nsIProgressEventSink> sink = do_GetInterface(mRequestor);
if (!sink)
return NS_ERROR_NO_INTERFACE;
*aResult = sink;
NS_ADDREF((nsISupports*)*aResult);
return NS_OK;
}
return NS_ERROR_NO_INTERFACE;
}
NS_IMETHODIMP
nsHTTPIndex::OnFTPControlLog(PRBool server, const char *msg)
{
NS_ENSURE_TRUE(mRequestor, NS_OK);
nsCOMPtr<nsIScriptGlobalObject> scriptGlobal(do_GetInterface(mRequestor));
NS_ENSURE_TRUE(scriptGlobal, NS_OK);
nsIScriptContext *context = scriptGlobal->GetContext();
NS_ENSURE_TRUE(context, NS_OK);
JSContext* jscontext = NS_REINTERPRET_CAST(JSContext*,
context->GetNativeContext());
NS_ENSURE_TRUE(jscontext, NS_OK);
JSObject* global = JS_GetGlobalObject(jscontext);
NS_ENSURE_TRUE(global, NS_OK);
jsval params[2];
nsString unicodeMsg;
unicodeMsg.AssignWithConversion(msg);
JSString* jsMsgStr = JS_NewUCStringCopyZ(jscontext, (jschar*) unicodeMsg.get());
params[0] = BOOLEAN_TO_JSVAL(server);
params[1] = STRING_TO_JSVAL(jsMsgStr);
jsval val;
JS_CallFunctionName(jscontext,
global,
"OnFTPControlLog",
2,
params,
&val);
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndex::SetEncoding(const char *encoding)
{
mEncoding = encoding;
return(NS_OK);
}
NS_IMETHODIMP
nsHTTPIndex::GetEncoding(char **encoding)
{
NS_PRECONDITION(encoding, "null ptr");
if (! encoding)
return(NS_ERROR_NULL_POINTER);
*encoding = ToNewCString(mEncoding);
if (!*encoding)
return(NS_ERROR_OUT_OF_MEMORY);
return(NS_OK);
}
NS_IMETHODIMP
nsHTTPIndex::OnStartRequest(nsIRequest *request, nsISupports* aContext)
{
nsresult rv;
mParser = do_CreateInstance(NS_DIRINDEXPARSER_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
rv = mParser->SetEncoding(mEncoding.get());
if (NS_FAILED(rv)) return rv;
rv = mParser->SetListener(this);
if (NS_FAILED(rv)) return rv;
rv = mParser->OnStartRequest(request,aContext);
if (NS_FAILED(rv)) return rv;
// This should only run once...
// Unless we don't have a container to start with
// (ie called from bookmarks as an rdf datasource)
if (mBindToGlobalObject && mRequestor) {
mBindToGlobalObject = PR_FALSE;
// Now get the content viewer container's script object.
nsCOMPtr<nsIScriptGlobalObject> scriptGlobal(do_GetInterface(mRequestor));
NS_ENSURE_TRUE(scriptGlobal, NS_ERROR_FAILURE);
nsIScriptContext *context = scriptGlobal->GetContext();
NS_ENSURE_TRUE(context, NS_ERROR_FAILURE);
JSContext* jscontext = NS_REINTERPRET_CAST(JSContext*,
context->GetNativeContext());
JSObject* global = JS_GetGlobalObject(jscontext);
// Using XPConnect, wrap the HTTP index object...
static NS_DEFINE_CID(kXPConnectCID, NS_XPCONNECT_CID);
nsCOMPtr<nsIXPConnect> xpc(do_GetService(kXPConnectCID, &rv));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIXPConnectJSObjectHolder> wrapper;
rv = xpc->WrapNative(jscontext,
global,
NS_STATIC_CAST(nsIHTTPIndex*, this),
NS_GET_IID(nsIHTTPIndex),
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;
ok = JS_SetProperty(jscontext, global, "HTTPIndex", &jslistener);
NS_ASSERTION(ok, "unable to set Listener property");
if (! ok)
return NS_ERROR_FAILURE;
}
if (!aContext) {
nsCOMPtr<nsIChannel> channel(do_QueryInterface(request));
NS_ASSERTION(channel, "request should be a channel");
// lets hijack the notifications:
channel->SetNotificationCallbacks(this);
// now create the top most resource
nsCOMPtr<nsIURI> uri;
channel->GetURI(getter_AddRefs(uri));
nsCAutoString entryuriC;
uri->GetSpec(entryuriC);
nsCOMPtr<nsIRDFResource> entry;
rv = mDirRDF->GetResource(entryuriC, getter_AddRefs(entry));
NS_ConvertUTF8toUCS2 uriUnicode(entryuriC);
nsCOMPtr<nsIRDFLiteral> URLVal;
rv = mDirRDF->GetLiteral(uriUnicode.get(), getter_AddRefs(URLVal));
Assert(entry, kNC_URL, URLVal, PR_TRUE);
mDirectory = do_QueryInterface(entry);
}
else
{
// Get the directory from the context
mDirectory = do_QueryInterface(aContext);
}
if (!mDirectory) {
request->Cancel(NS_BINDING_ABORTED);
return NS_BINDING_ABORTED;
}
// Mark the directory as "loading"
rv = Assert(mDirectory, kNC_Loading,
kTrueLiteral, PR_TRUE);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndex::OnStopRequest(nsIRequest *request,
nsISupports* aContext,
nsresult aStatus)
{
// If mDirectory isn't set, then we should just bail. Either an
// error occurred and OnStartRequest() never got called, or
// something exploded in OnStartRequest().
if (! mDirectory)
return NS_BINDING_ABORTED;
mParser->OnStopRequest(request,aContext,aStatus);
nsresult rv;
nsXPIDLCString commentStr;
mParser->GetComment(getter_Copies(commentStr));
nsCOMPtr<nsIRDFLiteral> comment;
rv = mDirRDF->GetLiteral(NS_ConvertASCIItoUCS2(commentStr).get(), getter_AddRefs(comment));
if (NS_FAILED(rv)) return rv;
rv = Assert(mDirectory, kNC_Comment, comment, PR_TRUE);
if (NS_FAILED(rv)) return rv;
// hack: Remove the 'loading' annotation (ignore errors)
AddElement(mDirectory, kNC_Loading, kTrueLiteral);
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndex::OnDataAvailable(nsIRequest *request,
nsISupports* aContext,
nsIInputStream* aStream,
PRUint32 aSourceOffset,
PRUint32 aCount)
{
// If mDirectory isn't set, then we should just bail. Either an
// error occurred and OnStartRequest() never got called, or
// something exploded in OnStartRequest().
if (! mDirectory)
return NS_BINDING_ABORTED;
return mParser->OnDataAvailable(request, mDirectory, aStream, aSourceOffset, aCount);
}
nsresult
nsHTTPIndex::OnIndexAvailable(nsIRequest* aRequest, nsISupports *aContext,
nsIDirIndex* aIndex)
{
nsCOMPtr<nsIRDFResource> parentRes = do_QueryInterface(aContext);
if (!parentRes) {
NS_ERROR("Could not obtain parent resource");
return(NS_ERROR_UNEXPECTED);
}
const char* baseStr;
parentRes->GetValueConst(&baseStr);
if (! baseStr) {
NS_ERROR("Could not reconstruct base uri\n");
return NS_ERROR_UNEXPECTED;
}
// we found the filename; construct a resource for its entry
nsCAutoString entryuriC(baseStr);
// gopher resources don't point to an entry in the same directory
// like ftp uris. So the entryuriC is just a unique string, while
// the URL attribute is the destination of this element
// The naming scheme for the attributes is taken from the bookmarks
nsXPIDLCString filename;
nsresult rv = aIndex->GetLocation(getter_Copies(filename));
if (NS_FAILED(rv)) return rv;
entryuriC.Append(filename);
// if its a directory, make sure it ends with a trailing slash.
// This doesn't matter for gopher, (where directories don't have
// to end in a trailing /), because the filename is used for the URL
// attribute.
PRUint32 type;
rv = aIndex->GetType(&type);
if (NS_FAILED(rv))
return rv;
PRBool isDirType = (type == nsIDirIndex::TYPE_DIRECTORY);
if (isDirType) {
entryuriC.Append('/');
}
nsCOMPtr<nsIRDFResource> entry;
rv = mDirRDF->GetResource(entryuriC, 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)) {
nsCOMPtr<nsIRDFLiteral> lit;
nsString str;
// For gopher, the target is the filename. We still have to do all
// the above string manipulation though, because we need the entryuric
// as the key for the RDF data source
if (!strncmp(entryuriC.get(), kGopherProtocol, sizeof(kGopherProtocol)-1))
str.AssignWithConversion(filename);
else {
str.AssignWithConversion(entryuriC.get());
}
rv = mDirRDF->GetLiteral(str.get(), getter_AddRefs(lit));
if (NS_SUCCEEDED(rv)) {
rv = Assert(entry, kNC_URL, lit, PR_TRUE);
if (NS_FAILED(rv)) return rv;
nsXPIDLString xpstr;
// description
rv = aIndex->GetDescription(getter_Copies(xpstr));
if (NS_FAILED(rv)) return rv;
rv = mDirRDF->GetLiteral(xpstr.get(), getter_AddRefs(lit));
if (NS_FAILED(rv)) return rv;
rv = Assert(entry, kNC_Description, lit, PR_TRUE);
if (NS_FAILED(rv)) return rv;
// contentlength
PRInt64 size;
rv = aIndex->GetSize(&size);
if (NS_FAILED(rv)) return rv;
PRInt64 minus1 = LL_MAXUINT;
if (LL_NE(size, minus1)) {
PRInt32 intSize;
LL_L2I(intSize, size);
// XXX RDF should support 64 bit integers (bug 240160)
nsCOMPtr<nsIRDFInt> val;
rv = mDirRDF->GetIntLiteral(intSize, getter_AddRefs(val));
if (NS_FAILED(rv)) return rv;
rv = Assert(entry, kNC_ContentLength, val, PR_TRUE);
if (NS_FAILED(rv)) return rv;
}
// lastmodified
PRTime tm;
rv = aIndex->GetLastModified(&tm);
if (NS_FAILED(rv)) return rv;
if (tm != -1) {
nsCOMPtr<nsIRDFDate> val;
rv = mDirRDF->GetDateLiteral(tm, getter_AddRefs(val));
if (NS_FAILED(rv)) return rv;
rv = Assert(entry, kNC_LastModified, val, PR_TRUE);
}
// filetype
PRUint32 type;
rv = aIndex->GetType(&type);
switch (type) {
case nsIDirIndex::TYPE_UNKNOWN:
rv = mDirRDF->GetLiteral(NS_LITERAL_STRING("UNKNOWN").get(), getter_AddRefs(lit));
break;
case nsIDirIndex::TYPE_DIRECTORY:
rv = mDirRDF->GetLiteral(NS_LITERAL_STRING("DIRECTORY").get(), getter_AddRefs(lit));
break;
case nsIDirIndex::TYPE_FILE:
rv = mDirRDF->GetLiteral(NS_LITERAL_STRING("FILE").get(), getter_AddRefs(lit));
break;
case nsIDirIndex::TYPE_SYMLINK:
rv = mDirRDF->GetLiteral(NS_LITERAL_STRING("SYMLINK").get(), getter_AddRefs(lit));
break;
}
if (NS_FAILED(rv)) return rv;
rv = Assert(entry, kNC_FileType, lit, PR_TRUE);
if (NS_FAILED(rv)) return rv;
}
// Since the definition of a directory depends on the protocol, we would have
// to do string comparisons all the time.
// But we're told if we're a container right here - so save that fact
if (isDirType)
Assert(entry, kNC_IsContainer, kTrueLiteral, PR_TRUE);
else
Assert(entry, kNC_IsContainer, kFalseLiteral, PR_TRUE);
// instead of
// rv = Assert(parentRes, kNC_Child, entry, PR_TRUE);
// if (NS_FAILED(rv)) return rv;
// defer insertion onto a timer so that the UI isn't starved
AddElement(parentRes, kNC_Child, entry);
}
return rv;
}
nsresult
nsHTTPIndex::OnInformationAvailable(nsIRequest *aRequest,
nsISupports *aCtxt,
const nsAString& aInfo) {
return NS_ERROR_NOT_IMPLEMENTED;
}
//----------------------------------------------------------------------
//
// nsHTTPIndex implementation
//
nsHTTPIndex::nsHTTPIndex()
: mBindToGlobalObject(PR_TRUE),
mRequestor(nsnull)
{
}
nsHTTPIndex::nsHTTPIndex(nsIInterfaceRequestor* aRequestor)
: mBindToGlobalObject(PR_TRUE),
mRequestor(aRequestor)
{
}
nsHTTPIndex::~nsHTTPIndex()
{
// note: these are NOT statics due to the native of nsHTTPIndex
// where it may or may not be treated as a singleton
if (mTimer)
{
// be sure to cancel the timer, as it holds a
// weak reference back to nsHTTPIndex
mTimer->Cancel();
mTimer = nsnull;
}
mConnectionList = nsnull;
mNodeList = nsnull;
if (mDirRDF)
{
// UnregisterDataSource() may fail; just ignore errors
mDirRDF->UnregisterDataSource(this);
}
}
nsresult
nsHTTPIndex::CommonInit()
{
nsresult rv = NS_OK;
// set initial/default encoding to ISO-8859-1 (not UTF-8)
mEncoding = "ISO-8859-1";
mDirRDF = do_GetService(kRDFServiceCID, &rv);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to get RDF service");
if (NS_FAILED(rv)) {
return(rv);
}
mInner = do_CreateInstance("@mozilla.org/rdf/datasource;1?name=in-memory-datasource", &rv);
if (NS_FAILED(rv))
return rv;
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "child"),
getter_AddRefs(kNC_Child));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "loading"),
getter_AddRefs(kNC_Loading));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "Comment"),
getter_AddRefs(kNC_Comment));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "URL"),
getter_AddRefs(kNC_URL));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "Name"),
getter_AddRefs(kNC_Description));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "Content-Length"),
getter_AddRefs(kNC_ContentLength));
mDirRDF->GetResource(NS_LITERAL_CSTRING(WEB_NAMESPACE_URI "LastModifiedDate"),
getter_AddRefs(kNC_LastModified));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "Content-Type"),
getter_AddRefs(kNC_ContentType));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "File-Type"),
getter_AddRefs(kNC_FileType));
mDirRDF->GetResource(NS_LITERAL_CSTRING(NC_NAMESPACE_URI "IsContainer"),
getter_AddRefs(kNC_IsContainer));
rv = mDirRDF->GetLiteral(NS_LITERAL_STRING("true").get(), getter_AddRefs(kTrueLiteral));
if (NS_FAILED(rv)) return(rv);
rv = mDirRDF->GetLiteral(NS_LITERAL_STRING("false").get(), getter_AddRefs(kFalseLiteral));
if (NS_FAILED(rv)) return(rv);
rv = NS_NewISupportsArray(getter_AddRefs(mConnectionList));
if (NS_FAILED(rv)) return(rv);
// note: don't register DS here
return rv;
}
nsresult
nsHTTPIndex::Init()
{
nsresult rv;
// set initial/default encoding to ISO-8859-1 (not UTF-8)
mEncoding = "ISO-8859-1";
rv = CommonInit();
if (NS_FAILED(rv)) return(rv);
// (do this last) register this as a named data source with the RDF service
rv = mDirRDF->RegisterDataSource(this, PR_FALSE);
if (NS_FAILED(rv)) return(rv);
return(NS_OK);
}
nsresult
nsHTTPIndex::Init(nsIURI* aBaseURL)
{
NS_PRECONDITION(aBaseURL != nsnull, "null ptr");
if (! aBaseURL)
return NS_ERROR_NULL_POINTER;
nsresult rv;
rv = CommonInit();
if (NS_FAILED(rv)) return(rv);
// note: don't register DS here (singleton case)
rv = aBaseURL->GetSpec(mBaseURL);
if (NS_FAILED(rv)) return rv;
// Mark the base url as a container
nsCOMPtr<nsIRDFResource> baseRes;
mDirRDF->GetResource(mBaseURL, getter_AddRefs(baseRes));
Assert(baseRes, kNC_IsContainer, kTrueLiteral, PR_TRUE);
return NS_OK;
}
nsresult
nsHTTPIndex::Create(nsIURI* aBaseURL, nsIInterfaceRequestor* aRequestor,
nsIHTTPIndex** aResult)
{
*aResult = nsnull;
nsHTTPIndex* result = new nsHTTPIndex(aRequestor);
if (! result)
return NS_ERROR_OUT_OF_MEMORY;
nsresult rv = result->Init(aBaseURL);
if (NS_SUCCEEDED(rv))
{
NS_ADDREF(result);
*aResult = result;
}
else
{
delete result;
}
return rv;
}
NS_IMETHODIMP
nsHTTPIndex::GetBaseURL(char** _result)
{
*_result = ToNewCString(mBaseURL);
if (! *_result)
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndex::GetDataSource(nsIRDFDataSource** _result)
{
NS_ADDREF(*_result = this);
return NS_OK;
}
// This function finds the destination when following a given nsIRDFResource
// If the resource has a URL attribute, we use that. If not, just use
// the uri.
//
// Do NOT try to get the destination of a uri in any other way
void nsHTTPIndex::GetDestination(nsIRDFResource* r, nsXPIDLCString& dest) {
// First try the URL attribute
nsCOMPtr<nsIRDFNode> node;
GetTarget(r, kNC_URL, PR_TRUE, getter_AddRefs(node));
nsCOMPtr<nsIRDFLiteral> url;
if (node)
url = do_QueryInterface(node);
if (!url) {
const char* temp;
r->GetValueConst(&temp);
dest.Adopt(temp ? nsCRT::strdup(temp) : 0);
} else {
const PRUnichar* uri;
url->GetValueConst(&uri);
dest.Adopt(ToNewUTF8String(nsDependentString(uri)));
}
}
// rjc: isWellknownContainerURI() decides whether a URI is a container for which,
// when asked (say, by the template builder), we'll make a network connection
// to get its contents. For the moment, all we speak is ftp:// URLs, even though
// a) we can get "http-index" mimetypes for really anything
// b) we could easily handle file:// URLs here
// Q: Why don't we?
// A: The file system datasource ("rdf:file"); at some point, the two
// should be perhaps united. Until then, we can't aggregate both
// "rdf:file" and "http-index" (such as with bookmarks) because we'd
// get double the # of answers we really want... also, "rdf:file" is
// less expensive in terms of both memory usage as well as speed
// We also handle gopher now
// We use an rdf attribute to mark if this is a container or not.
// Note that we still have to do string comparisons as a fallback
// because stuff like the personal toolbar and bookmarks check whether
// a URL is a container, and we have no attribute in that case.
PRBool
nsHTTPIndex::isWellknownContainerURI(nsIRDFResource *r)
{
nsCOMPtr<nsIRDFNode> node;
GetTarget(r, kNC_IsContainer, PR_TRUE, getter_AddRefs(node));
PRBool isContainerFlag = PR_FALSE;
if (node && NS_SUCCEEDED(node->EqualsNode(kTrueLiteral, &isContainerFlag))) {
return isContainerFlag;
} else {
nsXPIDLCString uri;
// For gopher, we need to follow the URL attribute to get the
// real destination
GetDestination(r,uri);
if ((uri.get()) && (!strncmp(uri, kFTPProtocol, sizeof(kFTPProtocol) - 1))) {
if (uri.Last() == '/') {
isContainerFlag = PR_TRUE;
}
}
// A gopher url is of the form:
// gopher://example.com/xFileNameToGet
// where x is a single character representing the type of file
// 1 is a directory, and 7 is a search.
// Searches will cause a dialog to be popped up (asking the user what
// to search for), and so even though searches return a directory as a
// result, don't treat it as a directory here.
// The isContainerFlag test above will correctly handle this when a
// search url is passed in as the baseuri
if ((uri.get()) &&
(!strncmp(uri,kGopherProtocol, sizeof(kGopherProtocol)-1))) {
char* pos = PL_strchr(uri+sizeof(kGopherProtocol)-1, '/');
if (!pos || pos[1] == '\0' || pos[1] == '1')
isContainerFlag = PR_TRUE;
}
}
return isContainerFlag;
}
NS_IMETHODIMP
nsHTTPIndex::GetURI(char * *uri)
{
NS_PRECONDITION(uri != nsnull, "null ptr");
if (! uri)
return(NS_ERROR_NULL_POINTER);
if ((*uri = nsCRT::strdup("rdf:httpindex")) == nsnull)
return(NS_ERROR_OUT_OF_MEMORY);
return(NS_OK);
}
NS_IMETHODIMP
nsHTTPIndex::GetSource(nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue,
nsIRDFResource **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
*_retval = nsnull;
if (mInner)
{
rv = mInner->GetSource(aProperty, aTarget, aTruthValue, _retval);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::GetSources(nsIRDFResource *aProperty, nsIRDFNode *aTarget, PRBool aTruthValue,
nsISimpleEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->GetSources(aProperty, aTarget, aTruthValue, _retval);
}
else
{
rv = NS_NewEmptyEnumerator(_retval);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::GetTarget(nsIRDFResource *aSource, nsIRDFResource *aProperty, PRBool aTruthValue,
nsIRDFNode **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
*_retval = nsnull;
if ((aTruthValue) && (aProperty == kNC_Child) && isWellknownContainerURI(aSource))
{
// fake out the generic builder (i.e. return anything in this case)
// so that search containers never appear to be empty
NS_IF_ADDREF(aSource);
*_retval = aSource;
return(NS_OK);
}
if (mInner)
{
rv = mInner->GetTarget(aSource, aProperty, aTruthValue, _retval);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::GetTargets(nsIRDFResource *aSource, nsIRDFResource *aProperty, PRBool aTruthValue,
nsISimpleEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->GetTargets(aSource, aProperty, aTruthValue, _retval);
}
else
{
rv = NS_NewEmptyEnumerator(_retval);
}
if ((aProperty == kNC_Child) && isWellknownContainerURI(aSource))
{
PRBool doNetworkRequest = PR_TRUE;
if (NS_SUCCEEDED(rv) && (_retval))
{
// check and see if we already have data for the search in question;
// if we do, don't bother doing the search again
PRBool hasResults = PR_FALSE;
if (NS_SUCCEEDED((*_retval)->HasMoreElements(&hasResults)) &&
(hasResults == PR_TRUE))
{
doNetworkRequest = PR_FALSE;
}
}
// Note: if we need to do a network request, do it out-of-band
// (because the XUL template builder isn't re-entrant)
// by using a global connection list and an immediately-firing timer
if ((doNetworkRequest == PR_TRUE) && (mConnectionList))
{
PRInt32 connectionIndex = mConnectionList->IndexOf(aSource);
if (connectionIndex < 0)
{
// add aSource into list of connections to make
mConnectionList->AppendElement(aSource);
// if we don't have a timer about to fire, create one
// which should fire as soon as possible (out-of-band)
if (!mTimer)
{
mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create a timer");
if (NS_SUCCEEDED(rv))
{
mTimer->InitWithFuncCallback(nsHTTPIndex::FireTimer, this, 1,
nsITimer::TYPE_ONE_SHOT);
// Note: don't addref "this" as we'll cancel the
// timer in the httpIndex destructor
}
}
}
}
}
return(rv);
}
nsresult
nsHTTPIndex::AddElement(nsIRDFResource *parent, nsIRDFResource *prop, nsIRDFNode *child)
{
nsresult rv;
if (!mNodeList)
{
rv = NS_NewISupportsArray(getter_AddRefs(mNodeList));
if (NS_FAILED(rv)) return(rv);
}
// order required: parent, prop, then child
mNodeList->AppendElement(parent);
mNodeList->AppendElement(prop);
mNodeList->AppendElement(child);
if (!mTimer)
{
mTimer = do_CreateInstance("@mozilla.org/timer;1", &rv);
NS_ASSERTION(NS_SUCCEEDED(rv), "unable to create a timer");
if (NS_FAILED(rv)) return(rv);
mTimer->InitWithFuncCallback(nsHTTPIndex::FireTimer, this, 1,
nsITimer::TYPE_ONE_SHOT);
// Note: don't addref "this" as we'll cancel the
// timer in the httpIndex destructor
}
return(NS_OK);
}
void
nsHTTPIndex::FireTimer(nsITimer* aTimer, void* aClosure)
{
nsHTTPIndex *httpIndex = NS_STATIC_CAST(nsHTTPIndex *, aClosure);
if (!httpIndex) return;
// don't return out of this loop as mTimer may need to be cancelled afterwards
PRBool refireTimer = PR_FALSE;
PRUint32 numItems = 0;
if (httpIndex->mConnectionList)
{
httpIndex->mConnectionList->Count(&numItems);
if (numItems > 0)
{
nsCOMPtr<nsISupports> isupports;
httpIndex->mConnectionList->GetElementAt((PRUint32)0, getter_AddRefs(isupports));
httpIndex->mConnectionList->RemoveElementAt((PRUint32)0);
nsCOMPtr<nsIRDFResource> aSource;
if (isupports) aSource = do_QueryInterface(isupports);
nsXPIDLCString uri;
if (aSource) {
httpIndex->GetDestination(aSource, uri);
}
if (!uri) {
NS_ERROR("Could not reconstruct uri");
return;
}
nsresult rv = NS_OK;
nsCOMPtr<nsIURI> url;
rv = NS_NewURI(getter_AddRefs(url), uri.get());
nsCOMPtr<nsIChannel> channel;
if (NS_SUCCEEDED(rv) && (url)) {
rv = NS_NewChannel(getter_AddRefs(channel), url, nsnull, nsnull);
}
if (NS_SUCCEEDED(rv) && (channel)) {
channel->SetNotificationCallbacks(httpIndex);
rv = channel->AsyncOpen(httpIndex, aSource);
}
}
}
if (httpIndex->mNodeList)
{
httpIndex->mNodeList->Count(&numItems);
if (numItems > 0)
{
// account for order required: src, prop, then target
numItems /=3;
if (numItems > 10) numItems = 10;
PRInt32 loop;
for (loop=0; loop<(PRInt32)numItems; loop++)
{
nsCOMPtr<nsISupports> isupports;
httpIndex->mNodeList->GetElementAt((PRUint32)0, getter_AddRefs(isupports));
httpIndex->mNodeList->RemoveElementAt((PRUint32)0);
nsCOMPtr<nsIRDFResource> src;
if (isupports) src = do_QueryInterface(isupports);
httpIndex->mNodeList->GetElementAt((PRUint32)0, getter_AddRefs(isupports));
httpIndex->mNodeList->RemoveElementAt((PRUint32)0);
nsCOMPtr<nsIRDFResource> prop;
if (isupports) prop = do_QueryInterface(isupports);
httpIndex->mNodeList->GetElementAt((PRUint32)0, getter_AddRefs(isupports));
httpIndex->mNodeList->RemoveElementAt((PRUint32)0);
nsCOMPtr<nsIRDFNode> target;
if (isupports) target = do_QueryInterface(isupports);
if (src && prop && target)
{
if (prop.get() == httpIndex->kNC_Loading)
{
httpIndex->Unassert(src, prop, target);
}
else
{
httpIndex->Assert(src, prop, target, PR_TRUE);
}
}
}
}
}
// check both lists to see if the timer needs to continue firing
if (httpIndex->mConnectionList)
{
httpIndex->mConnectionList->Count(&numItems);
if (numItems > 0)
{
refireTimer = PR_TRUE;
}
else
{
httpIndex->mConnectionList->Clear();
}
}
if (httpIndex->mNodeList)
{
httpIndex->mNodeList->Count(&numItems);
if (numItems > 0)
{
refireTimer = PR_TRUE;
}
else
{
httpIndex->mNodeList->Clear();
}
}
// be sure to cancel the timer, as it holds a
// weak reference back to nsHTTPIndex
httpIndex->mTimer->Cancel();
httpIndex->mTimer = nsnull;
// after firing off any/all of the connections be sure
// to cancel the timer if we don't need to refire it
if (refireTimer)
{
httpIndex->mTimer = do_CreateInstance("@mozilla.org/timer;1");
if (httpIndex->mTimer)
{
httpIndex->mTimer->InitWithFuncCallback(nsHTTPIndex::FireTimer, aClosure, 10,
nsITimer::TYPE_ONE_SHOT);
// Note: don't addref "this" as we'll cancel the
// timer in the httpIndex destructor
}
}
}
NS_IMETHODIMP
nsHTTPIndex::Assert(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget,
PRBool aTruthValue)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->Assert(aSource, aProperty, aTarget, aTruthValue);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::Unassert(nsIRDFResource *aSource, nsIRDFResource *aProperty, nsIRDFNode *aTarget)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->Unassert(aSource, aProperty, aTarget);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::Change(nsIRDFResource *aSource, nsIRDFResource *aProperty,
nsIRDFNode *aOldTarget, nsIRDFNode *aNewTarget)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->Change(aSource, aProperty, aOldTarget, aNewTarget);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::Move(nsIRDFResource *aOldSource, nsIRDFResource *aNewSource,
nsIRDFResource *aProperty, nsIRDFNode *aTarget)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->Move(aOldSource, aNewSource, aProperty, aTarget);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::HasAssertion(nsIRDFResource *aSource, nsIRDFResource *aProperty,
nsIRDFNode *aTarget, PRBool aTruthValue, PRBool *_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->HasAssertion(aSource, aProperty, aTarget, aTruthValue, _retval);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::AddObserver(nsIRDFObserver *aObserver)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->AddObserver(aObserver);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::RemoveObserver(nsIRDFObserver *aObserver)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->RemoveObserver(aObserver);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::HasArcIn(nsIRDFNode *aNode, nsIRDFResource *aArc, PRBool *result)
{
if (!mInner) {
*result = PR_FALSE;
return NS_OK;
}
return mInner->HasArcIn(aNode, aArc, result);
}
NS_IMETHODIMP
nsHTTPIndex::HasArcOut(nsIRDFResource *aSource, nsIRDFResource *aArc, PRBool *result)
{
if (aArc == kNC_Child && isWellknownContainerURI(aSource)) {
*result = PR_TRUE;
return NS_OK;
}
if (mInner) {
return mInner->HasArcOut(aSource, aArc, result);
}
*result = PR_FALSE;
return NS_OK;
}
NS_IMETHODIMP
nsHTTPIndex::ArcLabelsIn(nsIRDFNode *aNode, nsISimpleEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->ArcLabelsIn(aNode, _retval);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::ArcLabelsOut(nsIRDFResource *aSource, nsISimpleEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
*_retval = nsnull;
nsCOMPtr<nsISupportsArray> array;
rv = NS_NewISupportsArray(getter_AddRefs(array));
if (NS_FAILED(rv)) return rv;
if (isWellknownContainerURI(aSource))
{
array->AppendElement(kNC_Child);
}
if (mInner)
{
nsCOMPtr<nsISimpleEnumerator> anonArcs;
rv = mInner->ArcLabelsOut(aSource, getter_AddRefs(anonArcs));
PRBool hasResults = PR_TRUE;
while (NS_SUCCEEDED(rv) &&
NS_SUCCEEDED(anonArcs->HasMoreElements(&hasResults)) &&
hasResults == PR_TRUE)
{
nsCOMPtr<nsISupports> anonArc;
if (NS_FAILED(anonArcs->GetNext(getter_AddRefs(anonArc))))
break;
array->AppendElement(anonArc);
}
}
nsISimpleEnumerator* result = new nsArrayEnumerator(array);
if (! result)
return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(result);
*_retval = result;
return(NS_OK);
}
NS_IMETHODIMP
nsHTTPIndex::GetAllResources(nsISimpleEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->GetAllResources(_retval);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::IsCommandEnabled(nsISupportsArray *aSources, nsIRDFResource *aCommand,
nsISupportsArray *aArguments, PRBool *_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->IsCommandEnabled(aSources, aCommand, aArguments, _retval);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::DoCommand(nsISupportsArray *aSources, nsIRDFResource *aCommand,
nsISupportsArray *aArguments)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->DoCommand(aSources, aCommand, aArguments);
}
return(rv);
}
NS_IMETHODIMP
nsHTTPIndex::BeginUpdateBatch()
{
return mInner->BeginUpdateBatch();
}
NS_IMETHODIMP
nsHTTPIndex::EndUpdateBatch()
{
return mInner->EndUpdateBatch();
}
NS_IMETHODIMP
nsHTTPIndex::GetAllCmds(nsIRDFResource *aSource, nsISimpleEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->GetAllCmds(aSource, _retval);
}
return(rv);
}
//----------------------------------------------------------------------
//
// nsDirectoryViewerFactory
//
nsDirectoryViewerFactory::nsDirectoryViewerFactory()
{
}
nsDirectoryViewerFactory::~nsDirectoryViewerFactory()
{
}
NS_IMPL_ISUPPORTS1(nsDirectoryViewerFactory, nsIDocumentLoaderFactory)
NS_IMETHODIMP
nsDirectoryViewerFactory::CreateInstance(const char *aCommand,
nsIChannel* aChannel,
nsILoadGroup* aLoadGroup,
const char* aContentType,
nsISupports* aContainer,
nsISupports* aExtraInfo,
nsIStreamListener** aDocListenerResult,
nsIContentViewer** aDocViewerResult)
{
nsresult rv;
// OK - are we going to be using the html listing or not?
nsCOMPtr<nsIPrefBranch> prefSrv = do_GetService(NS_PREFSERVICE_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
PRBool useXUL = PR_FALSE;
PRInt32 dirPref;
rv = prefSrv->GetIntPref("network.dir.format", &dirPref);
if (NS_SUCCEEDED(rv) && dirPref == FORMAT_XUL) {
useXUL = PR_TRUE;
}
PRBool viewSource = (PL_strstr(aContentType,"view-source") != 0);
if ((NS_FAILED(rv) || useXUL) && !viewSource) {
// ... and setup the original channel's content type
(void)aChannel->SetContentType(NS_LITERAL_CSTRING("application/vnd.mozilla.xul+xml"));
// This is where we shunt the HTTP/Index stream into our datasource,
// and open the directory viewer XUL file as the content stream to
// load in its place.
// Create a dummy loader that will load a stub XUL document.
nsCOMPtr<nsICategoryManager> catMan(do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv));
if (NS_FAILED(rv))
return rv;
nsXPIDLCString contractID;
rv = catMan->GetCategoryEntry("Gecko-Content-Viewers", "application/vnd.mozilla.xul+xml",
getter_Copies(contractID));
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIDocumentLoaderFactory> factory(do_GetService(contractID, &rv));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIURI> uri;
rv = NS_NewURI(getter_AddRefs(uri), "chrome://communicator/content/directory/directory.xul");
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIChannel> channel;
rv = NS_NewChannel(getter_AddRefs(channel), uri, nsnull, aLoadGroup);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStreamListener> listener;
rv = factory->CreateInstance(aCommand, channel, aLoadGroup, "application/vnd.mozilla.xul+xml",
aContainer, aExtraInfo, getter_AddRefs(listener),
aDocViewerResult);
if (NS_FAILED(rv)) return rv;
rv = channel->AsyncOpen(listener, nsnull);
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<nsIInterfaceRequestor> requestor = do_QueryInterface(aContainer,&rv);
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIHTTPIndex> httpindex;
rv = nsHTTPIndex::Create(baseuri, requestor, getter_AddRefs(httpindex));
if (NS_FAILED(rv)) return rv;
// Now shanghai the stream into our http-index parsing datasource
// wrapper beastie.
listener = do_QueryInterface(httpindex,&rv);
*aDocListenerResult = listener.get();
NS_ADDREF(*aDocListenerResult);
return NS_OK;
}
// setup the original channel's content type
(void)aChannel->SetContentType(NS_LITERAL_CSTRING("text/html"));
// Otherwise, lets use the html listing
nsCOMPtr<nsICategoryManager> catMan(do_GetService(NS_CATEGORYMANAGER_CONTRACTID, &rv));
if (NS_FAILED(rv))
return rv;
nsXPIDLCString contractID;
rv = catMan->GetCategoryEntry("Gecko-Content-Viewers", "text/html",
getter_Copies(contractID));
if (NS_FAILED(rv))
return rv;
nsCOMPtr<nsIDocumentLoaderFactory> factory(do_GetService(contractID, &rv));
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStreamListener> listener;
if (viewSource) {
rv = factory->CreateInstance("view-source", aChannel, aLoadGroup, "text/html; x-view-type=view-source",
aContainer, aExtraInfo, getter_AddRefs(listener),
aDocViewerResult);
} else {
rv = factory->CreateInstance("view", aChannel, aLoadGroup, "text/html",
aContainer, aExtraInfo, getter_AddRefs(listener),
aDocViewerResult);
}
if (NS_FAILED(rv)) return rv;
nsCOMPtr<nsIStreamConverterService> scs = do_GetService("@mozilla.org/streamConverters;1", &rv);
if (NS_FAILED(rv)) return rv;
rv = scs->AsyncConvertData("application/http-index-format",
"text/html",
listener,
nsnull,
aDocListenerResult);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
NS_IMETHODIMP
nsDirectoryViewerFactory::CreateInstanceForDocument(nsISupports* aContainer,
nsIDocument* aDocument,
const char *aCommand,
nsIContentViewer** aDocViewerResult)
{
NS_NOTYETIMPLEMENTED("didn't expect to get here");
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP
nsDirectoryViewerFactory::CreateBlankDocument(nsILoadGroup *aLoadGroup,
nsIDocument **_retval) {
NS_NOTYETIMPLEMENTED("didn't expect to get here");
return NS_ERROR_NOT_IMPLEMENTED;
}
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