exposing the network status of a image request to wpl consumers. bug 355555. r=stuart.

git-svn-id: svn://10.0.0.236/trunk@215060 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/modules/libpr0n/src/imgRequest.cpp

@@ -79,7 +79,7 @@ NS_IMPL_ISUPPORTS6(imgRequest, imgILoad,
 imgRequest::imgRequest() : 
   mObservers(0),
   mLoading(PR_FALSE), mProcessing(PR_FALSE), mHadLastPart(PR_FALSE),
-  mImageStatus(imgIRequest::STATUS_NONE), mState(0),
+  mNetworkStatus(0), mImageStatus(imgIRequest::STATUS_NONE), mState(0),
   mCacheId(0), mValidator(nsnull), mIsMultiPartChannel(PR_FALSE)
 {
   /* member initializers and constructor code */
@@ -738,6 +738,10 @@ NS_IMETHODIMP imgRequest::OnStopRequest(nsIRequest *aRequest, nsISupports *ctxt,
   }
 
   // XXXldb What if this is a non-last part of a multipart request?
+  // xxx before we release our reference to mChannel, lets
+  // save the last status that we saw so that the
+  // imgRequestProxy will have access to it.
+  mRequest->GetStatus(&mNetworkStatus);
   mRequest = nsnull;  // we no longer need the request
 
   // If mImage is still null, we didn't properly load the image.
@@ -928,3 +932,15 @@ imgRequest::SniffMimeType(const char *buf, PRUint32 len)
 {
   imgLoader::GetMimeTypeFromContent(buf, len, mContentType);
 }
+
+nsresult 
+imgRequest::GetNetworkStatus()
+{
+  nsresult status;
+  if (mRequest)
+    mRequest->GetStatus(&status);
+  else
+    status = mNetworkStatus;
+
+  return status;
+}

mozilla/modules/libpr0n/src/imgRequest.h

@@ -102,6 +102,10 @@ public:
   // being made...
   PRBool IsReusable(void *aCacheId) { return !mLoading || (aCacheId == mCacheId); }
 
+  // get the current or last network status from our
+  // internal nsIChannel.
+  nsresult GetNetworkStatus();
+
 private:
   friend class imgRequestProxy;
   friend class imgLoader;
@@ -155,10 +159,9 @@ private:
   PRPackedBool mLoading;
   PRPackedBool mProcessing;
   PRPackedBool mHadLastPart;
-
+  PRUint32 mNetworkStatus;
   PRUint32 mImageStatus;
   PRUint32 mState;
-
   nsCString mContentType;
 
   nsCOMPtr<nsICacheEntryDescriptor> mCacheEntry; /* we hold on to this to this so long as we have observers */

mozilla/modules/libpr0n/src/imgRequestProxy.cpp

@@ -187,13 +187,18 @@ NS_IMETHODIMP imgRequestProxy::GetName(nsACString &aName)
 /* boolean isPending (); */
 NS_IMETHODIMP imgRequestProxy::IsPending(PRBool *_retval)
 {
-    return NS_ERROR_NOT_IMPLEMENTED;
+  return NS_ERROR_NOT_IMPLEMENTED;
 }
 
 /* readonly attribute nsresult status; */
 NS_IMETHODIMP imgRequestProxy::GetStatus(nsresult *aStatus)
 {
-    return NS_ERROR_NOT_IMPLEMENTED;
+  if (!mOwner)
+    return NS_ERROR_FAILURE;
+
+  *aStatus = mOwner->GetNetworkStatus();
+
+  return NS_OK;
 }
 
 /* void cancel (in nsresult status); */