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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,

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package com.sun.org.apache.xerces.internal.xni.parser;

import com.sun.org.apache.xerces.internal.util.FeatureState;

import com.sun.org.apache.xerces.internal.util.PropertyState;

/**

 * The component manager manages a parser configuration and the components

 * that make up that configuration. The manager notifies each component

 * before parsing to allow the components to initialize their state; and

 * also any time that a parser feature or property changes.

 * <p>

 * The methods of the component manager allow components to query features

 * and properties that affect the operation of the component.

 *

 * @see XMLComponent

 *

 * @author Andy Clark, IBM

 *

 */

public interface XMLComponentManager {

    //

    // XMLComponentManager methods

    //

    /**

     * Returns the state of a feature.

     *

     * @param featureId The feature identifier.

     *

     * @throws XMLConfigurationException Thrown on configuration error.

     */

    public boolean getFeature(String featureId)

        throws XMLConfigurationException;

    /**

     * Returns the state of a feature.

     * Does not throw exceptions.

     *

     * @param featureId The feature identifier.

     * @param defaultValue Default value if future is not available.

     */

    public boolean getFeature(String featureId, boolean defaultValue);

    /**

     * Returns the value of a property.

     *

     * @param propertyId The property identifier.

     *

    * @throws XMLConfigurationException Thrown on configuration error.

     */

    public Object getProperty(String propertyId)

        throws XMLConfigurationException;

    /**

     * Returns the value of a property.

     * Does not throw exceptions.

     *

     * @param propertyId The property identifier.

     * @param defaultObject Return value if property is not available.

     *

     */

    public Object getProperty(String propertyId, Object defaultObject);

    public FeatureState getFeatureState(String featureId);

    public PropertyState getPropertyState(String propertyId);

} // interface XMLComponentManager