/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at
http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface imgINotificationObserver;
interface imgIRequest;
interface nsIChannel;
interface nsILoadGroup;
interface nsIPrincipal;
interface nsIStreamListener;
interface nsIURI;
interface nsIReferrerInfo;
interface nsISimpleEnumerator;
webidl Document;
#include "nsIRequest.idl" // for nsLoadFlags
#include "nsIContentPolicy.idl" // for nsContentPolicyType
/**
* imgILoader interface
*
* @author Stuart Parmenter <pavlov@netscape.com>
* @version 0.3
* @see imagelib2
*/
[scriptable, builtinclass, uuid(e61377d2-910e-4c65-a64b-428d150e1fd1)]
interface imgILoader : nsISupports
{
// Extra flags to pass to loadImage if you want a load to use CORS
// validation.
const unsigned long LOAD_CORS_ANONYMOUS = 1 << 16;
const unsigned long LOAD_CORS_USE_CREDENTIALS = 1 << 17;
/**
* Start the load and decode of an image.
* @param aURI the URI to load
* @param aInitialDocumentURI the URI that 'initiated' the load -- used for
* 3rd party cookie blocking
* @param aReferrerInfo the referrer info to compute sending referrer.
* @param aLoadingPrincipal the principal of the loading document
* @param aLoadGroup Loadgroup to put the image load into
* @param aObserver the observer (may be null)
* @param aLoadingDocument loading document
* @param aLoadFlags Load flags for the request
* @param aCacheKey cache key to use for a load if the original
* image came from a request that had post data
* @param aContentPolicyType [optional] the nsContentPolicyType to
* use for this load. Defaults to
* nsIContentPolicy::TYPE_IMAGE
* ImageLib does NOT keep a strong ref to the observer; this prevents
* reference cycles. This means that callers of loadImage should
* make sure to Cancel() the resulting request before the observer
* goes away.
*/
imgIRequest loadImageXPCOM(in nsIURI aURI,
in nsIURI aInitialDocumentURL,
in nsIReferrerInfo aReferrerInfo,
in nsIPrincipal aLoadingPrincipal,
in nsILoadGroup aLoadGroup,
in imgINotificationObserver aObserver,
in Document aLoadingDocument,
in nsLoadFlags aLoadFlags,
in nsISupports cacheKey,
[optional]
in nsContentPolicyType aContentPolicyType);
/**
* Start the load and decode of an image.
* @param aChannel the channel to load the image from. This must
* already be opened before this method is called, and there
* must have been no OnDataAvailable calls for it yet.
* @param aObserver the observer (may be null)
* @param aLoadingDocument loading document
* @param aListener [out]
* A listener that you must send the channel's notifications and data
* to. Can be null, in which case imagelib has found a cached image
* and is not interested in the data. @aChannel will be canceled for
* you in this case.
*
* ImageLib does NOT keep a strong ref to the observer; this prevents
* reference cycles. This means that callers of loadImageWithChannel should
* make sure to Cancel() the resulting request before the observer goes away.
*/
imgIRequest loadImageWithChannelXPCOM(in nsIChannel aChannel,
in imgINotificationObserver aObserver,
in Document aLoadingDocument,
out nsIStreamListener aListener);
};
