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Shiro Security for Apache Wicket. (Shiro was formerly known as Apache Ki and JSecurity)

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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.wicketstuff.shiro.component;

import org.apache.shiro.SecurityUtils;
import org.apache.wicket.Page;
import org.apache.wicket.markup.html.WebMarkupContainer;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.html.panel.Panel;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.wicketstuff.shiro.page.LogoutPage;

public class SimpleAuthHeader extends Panel
{
	private static final long serialVersionUID = 1L;

	public SimpleAuthHeader(final String id, final Class loginPage)
	{
		super(id);

		// Welcome with logout
		final WebMarkupContainer welcome = new WebMarkupContainer("welcome")
		{
			private static final long serialVersionUID = 1L;

			@Override
			public boolean isVisible()
			{
				return SecurityUtils.getSubject().getPrincipal() != null;
			}
		};
		welcome.add(new Label("name", new AbstractReadOnlyModel()
		{
			private static final long serialVersionUID = 1L;

			@Override
			public String getObject()
			{
				return SecurityUtils.getSubject().getPrincipal().toString(); // ??
			}
		}));
		welcome.add(new BookmarkablePageLink("link", LogoutPage.class));
		add(welcome);


		// Login
		final WebMarkupContainer login = new WebMarkupContainer("login")
		{
			private static final long serialVersionUID = 1L;

			@Override
			public boolean isVisible()
			{
				return SecurityUtils.getSubject().getPrincipal() == null;
			}
		};
		login.add(new BookmarkablePageLink("link", loginPage));
		add(login);
	}
}