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c64143d01228d2b8ca2bbc5b4ecbcfad783ed2be
Mozilla/mozilla/xpfe/components/directory/nsDirectoryViewer.cpp
bbaetz%cs.mcgill.ca 00f048870f Bug 78148. Reorg directory viewer backend to allow file and gopher to use 
the html view as well. (This is currently disabled for file because of
i18n issues)

Should also fix dirviewer bugs 38014, 68651, 72724, 78474, and part
of 83881.

r/sr=darin, dougt


git-svn-id: svn://10.0.0.236/trunk@104495 18797224-902f-48f8-a5cc-f745e15eee43
2001-10-03 00:43:30 +00:00

1498 lines
44 KiB
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Netscape 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/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 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 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 NPL, 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 NPL, 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.area.com/~roeber/file_format.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 "nsIDocumentViewer.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 "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 "nsIContent.h"
#include "nsIDOMWindow.h"
#include "nsIDOMWindowInternal.h"
#include "nsIDOMWindowCollection.h"
#include "nsIDOMDocument.h"
#include "nsIDOMElement.h"
#include "nsIDOMText.h"
#include "nsIPref.h"
#include "nsIStreamConverterService.h"
//----------------------------------------------------------------------
//
// 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("@mozilla.org/embedcomp/window-watcher;1"));
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("@mozilla.org/embedcomp/window-watcher;1"));
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);
nsCOMPtr<nsIScriptContext> context;
nsresult rv = scriptGlobal->GetContext(getter_AddRefs(context));
NS_ENSURE_SUCCESS(rv, NS_OK);
JSContext* jscontext = NS_REINTERPRET_CAST(JSContext*,
context->GetNativeContext());
JSObject* global = JS_GetGlobalObject(jscontext);
if (!jscontext || !global) return 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 = nsCRT::strdup(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);
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);
nsCOMPtr<nsIScriptContext> context;
rv = scriptGlobal->GetContext(getter_AddRefs(context));
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));
nsXPIDLCString entryuriC;
uri->GetSpec(getter_Copies(entryuriC));
nsCOMPtr<nsIRDFResource> entry;
rv = mDirRDF->GetResource(entryuriC, getter_AddRefs(entry));
nsString uriUnicode;
uriUnicode.AssignWithConversion(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.get());
// 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, kGopherProtocol, sizeof(kGopherProtocol)-1))
str.AssignWithConversion(filename);
else {
str.AssignWithConversion(entryuriC);
}
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
PRUint32 size;
rv = aIndex->GetSize(&size);
if (NS_FAILED(rv)) return rv;
if (size != PRUint32(-1)) {
nsCOMPtr<nsIRDFInt> val;
rv = mDirRDF->GetIntLiteral(size, 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;
}
//----------------------------------------------------------------------
//
// nsHTTPIndex implementation
//
nsHTTPIndex::nsHTTPIndex()
: mBindToGlobalObject(PR_TRUE),
mRequestor(nsnull)
{
NS_INIT_REFCNT();
}
nsHTTPIndex::nsHTTPIndex(nsIInterfaceRequestor* aRequestor)
: mBindToGlobalObject(PR_TRUE),
mRequestor(aRequestor)
{
NS_INIT_REFCNT();
}
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(NC_NAMESPACE_URI "child", getter_AddRefs(kNC_Child));
mDirRDF->GetResource(NC_NAMESPACE_URI "loading", getter_AddRefs(kNC_Loading));
mDirRDF->GetResource(NC_NAMESPACE_URI "Comment", getter_AddRefs(kNC_Comment));
mDirRDF->GetResource(NC_NAMESPACE_URI "URL", getter_AddRefs(kNC_URL));
mDirRDF->GetResource(NC_NAMESPACE_URI "Name", getter_AddRefs(kNC_Description));
mDirRDF->GetResource(NC_NAMESPACE_URI "Content-Length", getter_AddRefs(kNC_ContentLength));
mDirRDF->GetResource("http://home.netscape.com/WEB-rdf#LastModifiedDate",
getter_AddRefs(kNC_LastModified));
mDirRDF->GetResource(NC_NAMESPACE_URI "Content-Type", getter_AddRefs(kNC_ContentType));
mDirRDF->GetResource(NC_NAMESPACE_URI "File-Type", getter_AddRefs(kNC_FileType));
mDirRDF->GetResource(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)
nsXPIDLCString url;
rv = aBaseURL->GetSpec(getter_Copies(url));
if (NS_FAILED(rv)) return rv;
mBaseURL.Assign(url);
// Mark the base url as a container
nsCOMPtr<nsIRDFResource> baseRes;
mDirRDF->GetResource(mBaseURL.get(), 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->Init(nsHTTPIndex::FireTimer, this, 1,
NS_PRIORITY_LOWEST, NS_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->Init(nsHTTPIndex::FireTimer, this, 1,
NS_PRIORITY_LOWEST, NS_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_OpenURI(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->Init(nsHTTPIndex::FireTimer, aClosure, 10,
NS_PRIORITY_LOWEST, NS_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::GetAllCommands(nsIRDFResource *aSource, nsIEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->GetAllCommands(aSource, _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::GetAllCmds(nsIRDFResource *aSource, nsISimpleEnumerator **_retval)
{
nsresult rv = NS_ERROR_UNEXPECTED;
if (mInner)
{
rv = mInner->GetAllCmds(aSource, _retval);
}
return(rv);
}
//----------------------------------------------------------------------
//
// nsDirectoryViewerFactory
//
nsDirectoryViewerFactory::nsDirectoryViewerFactory()
{
NS_INIT_REFCNT();
}
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<nsIPref> prefSrv = do_GetService(NS_PREF_CONTRACTID, &rv);
if (NS_FAILED(rv)) return rv;
PRBool useHtml;
rv = prefSrv->GetBoolPref("network.dir.generate_html", &useHtml);
// We need to disable html mode for file:///, at least for the moment
// The charset coding isn't quite right for non ASCII systems
// XXX - This is a temporary hack
nsCOMPtr<nsIURI> uri;
rv = aChannel->GetURI(getter_AddRefs(uri));
if (NS_SUCCEEDED(rv)) {
PRBool isFile;
if (NS_SUCCEEDED(uri->SchemeIs("file", &isFile)) && isFile)
useHtml = PR_FALSE;
}
PRBool viewSource = (PL_strstr(aContentType,"view-source") != 0);
if ((NS_FAILED(rv) || !useHtml) && !viewSource) {
// 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<nsIDocumentLoaderFactory> factory;
rv = nsComponentManager::CreateInstance(NS_DOCUMENT_LOADER_FACTORY_CONTRACTID_PREFIX "view;1?type=application/vnd.mozilla.xul+xml",
nsnull,
NS_GET_IID(nsIDocumentLoaderFactory),
getter_AddRefs(factory));
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_OpenURI(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);
// ... and set the original channel's content type up
(void)aChannel->SetContentType("application/vnd.mozilla.xul+xml");
return NS_OK;
}
// Otherwise, lets use the html listing
nsCOMPtr<nsIDocumentLoaderFactory> factory;
if (viewSource) {
rv = nsComponentManager::CreateInstance(NS_DOCUMENT_LOADER_FACTORY_CONTRACTID_PREFIX "view;1?type=text/html; x-view-type=view-source",
nsnull,
NS_GET_IID(nsIDocumentLoaderFactory),
getter_AddRefs(factory));
} else {
rv = nsComponentManager::CreateInstance(NS_DOCUMENT_LOADER_FACTORY_CONTRACTID_PREFIX "view;1?type=text/html",
nsnull,
NS_GET_IID(nsIDocumentLoaderFactory),
getter_AddRefs(factory));
}
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(NS_LITERAL_STRING("application/http-index-format").get(),
NS_LITERAL_STRING("text/html").get(),
listener,
nsnull,
aDocListenerResult);
if (NS_FAILED(rv)) return rv;
NS_ADDREF(*aDocListenerResult);
// ... and set the original channel's content type up
(void)aChannel->SetContentType("text/html");
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;
}
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