/* Woodstox XML processor
 *
 * Copyright (c) 2004- Tatu Saloranta, tatu.saloranta@iki.fi
 *
 * Licensed under the License specified in file LICENSE, included with
 * the source code.
 * You may not use this file except in compliance with the License.
 *
 * 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.
 */

package com.ctc.wstx.sr;

import javax.xml.stream.XMLStreamException;

Interface only used by Woodstox core. The main reason for the interface
is to reduce coupling with the input element stack and dtd validator
instances: while dtd validator needs to be able to inject namespace
declarations based on attribute default values, it should not have to
know too much about element stack implementation, and vice versa.
As a result, this interface defines API input element stack calls
on the dtd validator instance. Validator instance then refers to the
input element stack base class to do callbacks if and as necessary.
/**
 * Interface only used by Woodstox core. The main reason for the interface
 * is to reduce coupling with the input element stack and dtd validator
 * instances: while dtd validator needs to be able to inject namespace
 * declarations based on attribute default values, it should not have to
 * know too much about element stack implementation, and vice versa.
 * As a result, this interface defines API input element stack calls
 * on the dtd validator instance. Validator instance then refers to the
 * input element stack base class to do callbacks if and as necessary.
 */
public interface NsDefaultProvider
{
    public boolean mayHaveNsDefaults(String elemPrefix, String elemLN);

    
Method called by the input element stack to indicate that
it has just added local namespace declarations from the
current element, and is about to start resolving element
and attribute namespace bindings. This provider instance is
to add namespace declarations from attribute defaults, if
any, using callbacks to the input element stack.
/**
     * Method called by the input element stack to indicate that
     * it has just added local namespace declarations from the
     * current element, and is about to start resolving element
     * and attribute namespace bindings. This provider instance is
     * to add namespace declarations from attribute defaults, if
     * any, using callbacks to the input element stack.
     */
    public void checkNsDefaults(InputElementStack nsStack)
        throws XMLStreamException;
}