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Wicket development utilities provide helpful features that are typically used during development only, but may be turned on for additional production debugging.

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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.devutils.debugbar;

import org.apache.wicket.Page;
import org.apache.wicket.ResourceReference;
import org.apache.wicket.devutils.DevUtilsPanel;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.image.Image;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.model.IModel;

/**
 * A standard looking debug panel with an img (optional) and a string of data,
 * and the whole thing is a link.
 * 
 * @author Jeremy Thomerson 
 */
public abstract class StandardDebugPanel extends DevUtilsPanel {

	private static final long serialVersionUID = 1L;

	public StandardDebugPanel(String id) {
		super(id);
		BookmarkablePageLink link = createLink("link");
		add(link);
		ResourceReference img = getImageResourceReference();
		if (img == null) {
			link.add(new WebMarkupContainer("img").setVisibilityAllowed(false));
		} else {
			link.add(new Image("img", img));
		}
		link.add(new Label("data", getDataModel()));
	}

	protected BookmarkablePageLink createLink(String id) {
		return new BookmarkablePageLink(id, getLinkPageClass());
	}

	protected abstract IModel getDataModel();

	protected abstract ResourceReference getImageResourceReference();

	protected abstract Class getLinkPageClass();

}