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Bug # 20698 --> make image consumer a content listener and load image urls through the uri loader

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instead of trying to load them ourselves.
r=travis.
This commit is contained in:
mscott%netscape.com 1999-12-07 07:15:42 +00:00
parent 6e38a72544
commit 99c1377e5d
1 changed files with 83 additions and 9 deletions
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92
gfx/src/nsImageNetContextAsync.cpp
View File

@ -44,6 +44,9 @@
#include "nsNetUtil.h"
#include "nsCURILoader.h"
#include "nsIURIContentListener.h"
static NS_DEFINE_IID(kIImageNetContextIID, IL_INETCONTEXT_IID);
static NS_DEFINE_IID(kIURLIID, NS_IURL_IID);
@ -96,7 +99,7 @@ public:
void* mReconnectArg;
};
class ImageConsumer : public nsIStreamListener
class ImageConsumer : public nsIStreamListener, public nsIURIContentListener, public nsIInterfaceRequestor
{
public:
NS_DECL_ISUPPORTS
@ -106,6 +109,8 @@ public:
// nsIStreamObserver methods:
NS_DECL_NSISTREAMOBSERVER
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSIURICONTENTLISTENER
NS_DECL_NSIINTERFACEREQUESTOR
void SetKeepPumpingData(nsIChannel* channel, nsISupports* context) {
NS_ADDREF(channel);
@ -152,7 +157,64 @@ ImageConsumer::ImageConsumer(ilIURL *aURL, ImageNetContextImpl *aContext)
mUserContext = nsnull;
}
NS_IMPL_ISUPPORTS2(ImageConsumer, nsIStreamListener, nsIStreamObserver);
NS_IMPL_ADDREF(ImageConsumer)
NS_IMPL_RELEASE(ImageConsumer)
NS_INTERFACE_MAP_BEGIN(ImageConsumer)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIURIContentListener)
NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
NS_INTERFACE_MAP_ENTRY(nsIStreamObserver)
NS_INTERFACE_MAP_ENTRY(nsIInterfaceRequestor)
NS_INTERFACE_MAP_ENTRY(nsIURIContentListener)
NS_INTERFACE_MAP_END
NS_IMETHODIMP ImageConsumer::GetInterface(const nsIID & aIID, void * *aInstancePtr)
{
NS_ENSURE_ARG_POINTER(aInstancePtr);
return QueryInterface(aIID, aInstancePtr);
}
// nsIURIContentListener support
NS_IMETHODIMP
ImageConsumer::GetProtocolHandler(nsIURI *aURI, nsIProtocolHandler **aProtocolHandler)
{
*aProtocolHandler = nsnull;
return NS_OK;
}
NS_IMETHODIMP
ImageConsumer::CanHandleContent(const char * aContentType,
nsURILoadCommand aCommand,
const char * aWindowTarget,
char ** aDesiredContentType,
PRBool * aCanHandleContent)
{
// if we had a webshell or doc shell around, we'd pass this call
// through to it...but we don't =(
if (nsCRT::strcasecmp(aContentType, "message/rfc822") == 0)
*aDesiredContentType = nsCRT::strdup("text/xul");
// since we explicilty loaded the url, we always want to handle it!
*aCanHandleContent = PR_TRUE;
return NS_OK;
}
NS_IMETHODIMP
ImageConsumer::DoContent(const char * aContentType,
nsURILoadCommand aCommand,
const char * aWindowTarget,
nsIChannel * aOpenedChannel,
nsIStreamListener ** aContentHandler,
PRBool * aAbortProcess)
{
nsresult rv = NS_OK;
if (aAbortProcess)
*aAbortProcess = PR_FALSE;
QueryInterface(NS_GET_IID(nsIStreamListener), (void **) aContentHandler);
return rv;
}
NS_IMETHODIMP
ImageConsumer::OnStartRequest(nsIChannel* channel, nsISupports* aContext)
@ -548,16 +610,28 @@ ImageNetContextImpl::GetURL (ilIURL * aURL,
// See if a reconnect is being done...(XXX: hack!)
if (mReconnectCallback == nsnull
|| !(*mReconnectCallback)(mReconnectArg, ic)) {
nsCOMPtr<nsIChannel> channel;
nsCOMPtr<nsISupports> openContext (do_QueryInterface(mLoadGroup));
nsCOMPtr<nsISupports> window (do_QueryInterface(NS_STATIC_CAST(nsIStreamListener *, ic)));
nsCOMPtr<nsILoadGroup> group = do_QueryReferent(mLoadGroup);
rv = NS_OpenURI(getter_AddRefs(channel), nsurl, group);
if (NS_FAILED(rv)) goto error;
PRBool bIsBackground = aURL->GetBackgroundLoad();
if (bIsBackground) {
(void)channel->SetLoadAttributes(nsIChannel::LOAD_BACKGROUND);
// let's try uri dispatching...
NS_WITH_SERVICE(nsIURILoader, pURILoader, NS_URI_LOADER_PROGID, &rv);
if (NS_SUCCEEDED(rv))
{
nsURILoadCommand loadCmd = nsIURILoader::viewNormal;
PRBool bIsBackground = aURL->GetBackgroundLoad();
if (bIsBackground) {
loadCmd = nsIURILoader::viewNormalBackground;
}
rv = pURILoader->OpenURI(nsurl, loadCmd, nsnull /* window target */,
window,
nsnull /* refferring URI */,
group,
getter_AddRefs(openContext));
}
rv = channel->AsyncRead(0, -1, nsnull, ic);
// rv = channel->AsyncRead(0, -1, nsnull, ic);
if (NS_FAILED(rv)) goto error;
}
return mRequests->AppendElement((void *)ic) ? 0 : -1;