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Wicket is a Java web application framework that takes simplicity, separation of concerns and ease of development to a whole new level. Wicket pages can be mocked up, previewed and later revised using standard WYSIWYG HTML design tools. Dynamic content processing and form handling is all handled in Java code using a first-class component model backed by POJO data beans that can easily be persisted using your favorite technology.

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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.
 */
package org.apache.wicket.markup;


/**
 * Any list of MarkupElements. May be the content of complete markup file or just a portion of it.
 * 
 * @see Markup
 * @see MarkupFragment
 * @see MarkupElement
 * 
 * @author Juergen Donnerstag
 */
public interface IMarkupFragment extends Iterable
{
	/**
	 * Get the MarkupElement at the index provided.
	 * 
	 * @param index
	 *            Index into markup list
	 * @return Markup element
	 * @throws IndexOutOfBoundsException
	 *             if the index is out of range (index < 0 || index >= size())
	 */
	MarkupElement get(final int index);

	/**
	 * Get the underlying markup resource stream, which might contain more than just the markup
	 * portion represented by the IMarkupFragment.
	 * 
	 * @return The underlying markup resource stream
	 */
	MarkupResourceStream getMarkupResourceStream();

	/**
	 * The number of markup elements.
	 * 
	 * @return Number of markup elements
	 */
	int size();

	/**
	 * Find the markup fragment of the component with 'path'
	 * 
	 * @param id
	 *            The component's id to search for
	 * @return -1, if not found
	 */
	IMarkupFragment find(final String id);

	/**
	 * 
	 * @param markupOnly
	 *            True if only the markup shall be returned
	 * @return markup string
	 */
	String toString(final boolean markupOnly);
}