CanHandleContent now has an out parameter for desired content type.
Minor re-write of uri loder logic to incorporate stream conversion. If the content listener passes back
a desired content type that is different from the content type that we asked it to handle, we'll
automatically invoke a stream converter. This allows a doc shell which wants to handle say message/rfc822
to request that content be in the form of text/xul (i.e. if it was presenting the content).
Revamp the uri loader to excusively use AsyncRead instead of AsyncOpen and AsyncRead. With these changes,
we now only need to add the ability to retarget to our protocol channels instead of requiring both
retargeting and AsyncOpen support.
In order to do this, the DocumentOpenInfo object needed to become a nsIStreamListener instead of just
a stream observer.
Clean up OpenURI api. get rid of the verb, the channel context and the loadgroup as required arguments
to OpenURI.
Add the notion of a open uri context as an in and an out parameter. The open uri context is a cookie which
the caller can later give back to the uri loader when running another url in the same context. It's an ISupports
right now and the type should be opaque to the caller.
Don't require the caller to pass in an event sink getter. We can generate this for them. Do give them the ability
to pass in a nsIProgressEventSink. Note: this parameter is actually going to get changed into a nsIProgressListener
real soon as well. So don't get to used to it.
expanded OpenURI interface to take all the required arguments we need in order to really open the uri.
This includes adding the command, window target, event sink getter, load group and channel context.
Added dispatchContent method which is used by the doc open info's to talk back to the uri loader.
DispatchContent takes an opened channel and the uri content listener.