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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* $Id$ */
package org.apache.fop.util;
import java.util.EventListener;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
/**
* Factory interface implemented by classes that can instantiate ContentHandler subclasses which
* parse a SAX stream into Java objects.
*/
public interface ContentHandlerFactory {
/**
* @return an array of supported namespaces.
*/
String[] getSupportedNamespaces();
/**
* @return a new ContentHandler to handle a SAX stream
* @throws SAXException if there's an error while preparing the ContentHandler
*/
ContentHandler createContentHandler() throws SAXException;
/**
* Interface that ContentHandler implementations that parse Java objects from XML can implement
* to return these objects.
*/
public interface ObjectSource {
/**
* @return the object parsed from the SAX stream (call valid after parsing)
*/
Object getObject();
/**
* Set a listener which gets notified when the object is fully built.
* @param listener the listener which gets notified
*/
void setObjectBuiltListener(ObjectBuiltListener listener);
}
/**
* EventListener interface for objects which want to get notified when ContentHandler
* implementing the ObjectSource interface has finished parsing.
*/
public interface ObjectBuiltListener extends EventListener {
/**
* Notifies the listener when the object is fully built.
* @param obj the newly built object
*/
void notifyObjectBuilt(Object obj);
}
}
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