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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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/. */
/*
Interfaces for the RDF/XML sink, which parses RDF/XML into
a graph representation.
*/
#include "nsISupports.idl"
// XXX Until these get scriptable. See nsIRDFXMLSink::AddNameSpace()
[ptr] native nsIAtomPtr(nsIAtom);
[ref] native nsStringRef(nsString);
%{C++
class nsIAtom;
class nsString;
%}
interface nsIRDFXMLSink;
/**
* An observer that is notified as progress is made on the load
* of an RDF/XML document in an <code>nsIRDFXMLSink</code>.
*/
[scriptable, uuid(EB1A5D30-AB33-11D2-8EC6-00805F29F370)]
interface nsIRDFXMLSinkObserver : nsISupports
{
/**
* Called when the load begins.
* @param aSink the RDF/XML sink on which the load is beginning.
*/
void onBeginLoad(in nsIRDFXMLSink aSink);
/**
* Called when the load is suspended (e.g., for network quantization).
* @param aSink the RDF/XML sink that is being interrupted.
*/
void onInterrupt(in nsIRDFXMLSink aSink);
/**
* Called when a suspended load is resuming.
* @param aSink the RDF/XML sink that is resuming.
*/
void onResume(in nsIRDFXMLSink aSink);
/**
* Called when an RDF/XML load completes successfully.
* @param aSink the RDF/XML sink that has finished loading.
*/
void onEndLoad(in nsIRDFXMLSink aSink);
/**
* Called when an error occurs during the load
* @param aSink the RDF/XML sink in which the error occurred
* @param aStatus the networking result code
* @param aErrorMsg an error message, if applicable
*/
void onError(in nsIRDFXMLSink aSink, in nsresult aStatus, in wstring aErrorMsg);
};
/**
* A "sink" that receives and processes RDF/XML. This interface is used
* by the RDF/XML parser.
*/
[scriptable, uuid(EB1A5D31-AB33-11D2-8EC6-00805F29F370)]
interface nsIRDFXMLSink : nsISupports
{
/**
* Set to <code>true</code> if the sink is read-only and cannot
* be modified
*/
attribute boolean readOnly;
/**
* Initiate the RDF/XML load.
*/
void beginLoad();
/**
* Suspend the RDF/XML load.
*/
void interrupt();
/**
* Resume the RDF/XML load.
*/
void resume();
/**
* Complete the RDF/XML load.
*/
void endLoad();
/**
* Add namespace information to the RDF/XML sink.
* @param aPrefix the namespace prefix
* @param aURI the namespace URI
*/
[noscript] void addNameSpace(in nsIAtomPtr aPrefix,
[const] in nsStringRef aURI);
/**
* Add an observer that will be notified as the RDF/XML load
* progresses.
* <p>
*
* Note that the sink will acquire a strong reference to the
* observer, so care should be taken to avoid cyclical references
* that cannot be released (i.e., if the observer holds a
* reference to the sink, it should be sure that it eventually
* clears the reference).
*
* @param aObserver the observer to add to the sink's set of
* load observers.
*/
void addXMLSinkObserver(in nsIRDFXMLSinkObserver aObserver);
/**
* Remove an observer from the sink's set of observers.
* @param aObserver the observer to remove.
*/
void removeXMLSinkObserver(in nsIRDFXMLSinkObserver aObserver);
};
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