/*
* 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.
*/
package org.apache.wicket.markup.resolver;
import org.apache.wicket.Component;
import org.apache.wicket.MarkupContainer;
import org.apache.wicket.markup.ComponentTag;
import org.apache.wicket.markup.MarkupStream;
import org.apache.wicket.settings.PageSettings;
import org.apache.wicket.util.io.IClusterable;
/**
* IComponentResolvers are responsible for mapping component names to Wicket components. Resolvers
* are first looked up in a component's hierarchy before falling back to a list of
* IComponentResolvers maintained in {@link PageSettings}.
*
* NOTE: implementations for this interface must be thread-safe!
*
* @see ComponentResolvers
*
* @author Juergen Donnerstag
*/
public interface IComponentResolver extends IClusterable
{
/**
* Try to resolve a component.
*
* @param container
* The container parsing its markup
* @param markupStream
* The current markupStream
* @param tag
* The current component tag while parsing the markup
* @return component or {@code null} if not found
*/
Component resolve(final MarkupContainer container, final MarkupStream markupStream,
final ComponentTag tag);
}