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Bug #38374, 30157, 10802 --> turn on launching of helper applications to handle content types we don't know how to handle!! 

turn on the ability to launch urls using OS default protocol handlers.
uri loader modifications to make open attachment possible.
r=sspitzer
This commit is contained in:
mscott%netscape.com 2000-06-23 04:43:28 +00:00
Родитель 8df8079fbe
Коммит 5ce6a320cc
1 изменённых файлов: 50 добавлений и 42 удалений
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92
uriloader/base/nsURILoader.cpp
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@ -51,6 +51,8 @@
#include "nsIUnkContentTypeHandler.h"
#include "nsDOMError.h"
#include "nsCExternalHandlerService.h" // contains progids for the helper app service
static NS_DEFINE_CID(kURILoaderCID, NS_URI_LOADER_CID);
static NS_DEFINE_CID(kStreamConverterServiceCID, NS_STREAMCONVERTERSERVICE_CID);
@ -143,6 +145,7 @@ nsDocumentOpenInfo* nsDocumentOpenInfo::Clone()
newObject->m_contentListener = m_contentListener;
newObject->mCommand = mCommand;
newObject->m_windowTarget = m_windowTarget;
newObject->m_originalContext = m_originalContext;
}
return newObject;
@ -271,6 +274,7 @@ nsresult nsDocumentOpenInfo::DispatchContent(nsIChannel * aChannel, nsISupports
nsresult rv;
nsXPIDLCString contentType;
nsCOMPtr<nsISupports> originalWindowContext = m_originalContext; // local variable to keep track of this.
nsCOMPtr<nsIStreamListener> contentStreamListener;
rv = aChannel->GetContentType(getter_Copies(contentType));
if (NS_FAILED(rv)) return rv;
@ -293,8 +297,7 @@ nsresult nsDocumentOpenInfo::DispatchContent(nsIChannel * aChannel, nsISupports
m_originalContext,
getter_Copies(desiredContentType),
getter_AddRefs(contentListener),
&abortDispatch);
m_originalContext = nsnull; // we don't need this anymore....
&abortDispatch);
// if the uri loader says to abort the dispatch then someone
// else must have stepped in and taken over for us...so stop..
@ -305,42 +308,11 @@ nsresult nsDocumentOpenInfo::DispatchContent(nsIChannel * aChannel, nsISupports
// decoders exist to transform this content type into
// some other.
//
if (!contentListener) {
nsDocumentOpenInfo* nextLink;
// When applying stream decoders, it is necessary to "insert" an
// intermediate nsDocumentOpenInfo instance to handle the targeting of
// the "final" stream or streams.
//
// For certain content types (ie. multi-part/x-mixed-replace) the input
// stream is split up into multiple destination streams. This
// intermediate instance is used to target these "decoded" streams...
//
nextLink = Clone();
if (!nextLink) return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(nextLink);
// Set up the final destination listener.
nextLink->m_targetStreamListener = nsnull;
// The following call binds this channelListener's mNextListener (typically
// the nsDocumentBindInfo) to the underlying stream converter, and returns
// the underlying stream converter which we then set to be this channelListener's
// mNextListener. This effectively nestles the stream converter down right
// in between the raw stream and the final listener.
// catch the case when some joker server sends back a content type of "*/*"
// because we said we could handle "*/*" in our accept headers
if (nsCRT::strcmp(contentType, "*/*")) {
rv = RetargetOutput(aChannel, contentType, "*/*", nextLink);
NS_RELEASE(nextLink);
if (m_targetStreamListener) {
return NS_OK;
}
} else {
NS_RELEASE(nextLink);
}
if (!contentListener)
{
rv = RetargetOutput(aChannel, contentType, "*/*", nsnull);
if (m_targetStreamListener)
return NS_OK;
}
//
@ -360,7 +332,6 @@ nsresult nsDocumentOpenInfo::DispatchContent(nsIChannel * aChannel, nsISupports
//
if (contentListener)
{
nsCOMPtr<nsIStreamListener> contentStreamListener;
PRBool bAbortProcess = PR_FALSE;
nsCAutoString contentTypeToUse;
if (desiredContentType)
@ -388,6 +359,22 @@ nsresult nsDocumentOpenInfo::DispatchContent(nsIChannel * aChannel, nsISupports
// the listener is doing all the work from here...we are done!!!
if (bAbortProcess) return rv;
// BEFORE we fail and bring up the unknown content handler dialog...
// try to detect if there is a helper application we an use instead...
if (mCommand == nsIURILoader::viewUserClick && !contentStreamListener)
{
nsCOMPtr<nsIURI> uri;
PRBool abortProcess = PR_FALSE;
aChannel->GetURI(getter_AddRefs(uri));
nsCOMPtr<nsIStreamListener> contentStreamListener;
nsCOMPtr<nsIExternalHelperAppService> helperAppService (do_GetService(NS_EXTERNALHELPERAPPSERVICE_PROGID));
rv = helperAppService->DoContent(contentType, uri, m_originalContext, &abortProcess, getter_AddRefs(contentStreamListener));
if (NS_SUCCEEDED(rv) && contentStreamListener)
return RetargetOutput(aChannel, contentType, contentType, contentStreamListener);
else
rv = NS_ERROR_FAILURE; // this will cause us to bring up the unknown content handler dialog.
}
if (NS_FAILED(rv))
{
nsCOMPtr<nsIDOMWindow> domWindow (do_GetInterface(originalWindowContext));
@ -398,6 +385,7 @@ nsresult nsDocumentOpenInfo::DispatchContent(nsIChannel * aChannel, nsISupports
// did one of them give us a stream listener back? if so, let's start reading data
// into it...
rv = RetargetOutput(aChannel, contentType, desiredContentType, contentStreamListener);
m_originalContext = nsnull; // we don't need this anymore....
}
}
return rv;
@ -418,13 +406,32 @@ nsresult nsDocumentOpenInfo::RetargetOutput(nsIChannel * aChannel, const char *
nsIStreamListener * aStreamListener)
{
nsresult rv = NS_OK;
// do we need to invoke the stream converter service?
if (aOutContentType && *aOutContentType && nsCRT::strcasecmp(aSrcContentType, aOutContentType))
// catch the case when some joker server sends back a content type of "*/*"
// because we said we could handle "*/*" in our accept headers
if (aOutContentType && *aOutContentType && nsCRT::strcasecmp(aSrcContentType, aOutContentType) && nsCRT::strcmp(aSrcContentType, "*/*"))
{
NS_WITH_SERVICE(nsIStreamConverterService, StreamConvService, kStreamConverterServiceCID, &rv);
if (NS_FAILED(rv)) return rv;
nsAutoString from_w; from_w.AssignWithConversion (aSrcContentType);
nsAutoString to_w; to_w.AssignWithConversion (aOutContentType);
nsDocumentOpenInfo* nextLink;
// When applying stream decoders, it is necessary to "insert" an
// intermediate nsDocumentOpenInfo instance to handle the targeting of
// the "final" stream or streams.
//
// For certain content types (ie. multi-part/x-mixed-replace) the input
// stream is split up into multiple destination streams. This
// intermediate instance is used to target these "decoded" streams...
//
nextLink = Clone();
if (!nextLink) return NS_ERROR_OUT_OF_MEMORY;
NS_ADDREF(nextLink);
// Set up the final destination listener.
nextLink->m_targetStreamListener = nsnull;
// The following call binds this channelListener's mNextListener (typically
// the nsDocumentBindInfo) to the underlying stream converter, and returns
@ -433,9 +440,10 @@ nsresult nsDocumentOpenInfo::RetargetOutput(nsIChannel * aChannel, const char *
// in between the raw stream and the final listener.
rv = StreamConvService->AsyncConvertData(from_w.GetUnicode(),
to_w.GetUnicode(),
aStreamListener,
nextLink,
aChannel,
getter_AddRefs(m_targetStreamListener));
NS_RELEASE(nextLink);
}
else
m_targetStreamListener = aStreamListener; // no converter necessary so use a direct pipe