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0fefbf1cb0
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).
111 lines
4.4 KiB
Plaintext
111 lines
4.4 KiB
Plaintext
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1999 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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/* The uri dispatcher is responsible for taking uri's, determining
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the content and routing the opened url to the correct content
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handler.
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When you encounter a url you want to open, you typically call
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openURI, passing it the content listener for the window the uri is
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originating from. The uri dispatcher opens the url to discover the
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content type. It then gives the content listener first crack at
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handling the content. If it doesn't want it, the dispatcher tries
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to hand it off one of the registered content listeners. This allows
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running applications the chance to jump in and handle the content.
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If that also fails, then the uri dispatcher goes to the registry
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looking for the preferred content handler for the content type
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of the uri. The content handler may create an app instance
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or it may hand the contents off to a platform specific plugin
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or helper app. Or it may hand the url off to an OS registered
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application.
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*/
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#include "nsISupports.idl"
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interface nsIURIContentListener;
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interface nsIURI;
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interface nsIProgressEventSink;
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interface nsIChannel;
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interface nsIStreamListener;
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[scriptable, uuid(40AECB53-8B65-11d3-989D-001083010E9B)]
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interface nsIURILoader : nsISupports
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{
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/* as applications such as messenger and the browser are instantiated,
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they register content listener's with the uri dispatcher corresponding
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to content windows within that application.
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Note to self: we may want to optimize things a bit more by requiring
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the content types the registered content listener cares about.
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*/
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void registerContentListener (in nsIURIContentListener aContentListener);
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void unRegisterContentListener (in nsIURIContentListener aContentListener);
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/* OpenURI requires the following parameters.....
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aURI --> the uri you wish to open
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aWindowTarget -> the name of the desired target window (can be null)
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aProgressEventSink -> a progress event sink associated with the url (can be null)
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aContentListener --> a content listener you want to give first crack
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at handling the uri. (can be null)
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aReferringURI --> if a uri referral was involved....
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aOpenContext (in) --> if you've already opened a url before, and you still have
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the associated open context, you should pass it in here (can be null)
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This is used to help keep track of urls opened by the same caller!!
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aCurrentOpenContext --> a cookie returned to the caller which can be used by the caller
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to make future open calls on the uriloader.
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*/
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void openURI(in nsIURI aURI,
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in string aWindowTarget,
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in nsIProgressEventSink aProgressEventSink,
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in nsIURIContentListener aContentListener,
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in nsIURI aReferringURI,
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in nsISupports aOpenContext,
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out nsISupports aCurrentOpenContext);
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/* same call as OpenURI except this one takes an IP address to use as well...
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adapterBinding -> the local IP address to bind to*/
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void openURIVia(in nsIURI aURI,
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in string aWindowTarget,
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in nsIProgressEventSink aProgressEventSink,
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in nsIURIContentListener aContentListener,
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in nsIURI aReferringURI,
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in nsISupports aOpenContext,
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out nsISupports aCurrentOpenContext,
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in unsigned long adapterBinding);
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/* mscott -> I'm going to move this out into a separate private interface
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*/
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void dispatchContent(in string aContentType,
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in string aCommand,
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in string aWindowTarget,
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in nsIChannel aChannel,
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in nsISupports aCtxt,
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in nsIURIContentListener aContentListener,
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out string aDesiredContentType,
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out nsIURIContentListener aTargetListener);
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};
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