templatepage.java

Wicket一个开发Java Web应用程序框架。它使得开发web应用程序变得容易而轻松。 Wicket利用一个POJO data beans组件使得它可以与任何持久层技术相结合。

/*
 * 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.examples.template.pageinheritance;

import org.apache.wicket.examples.WicketExamplePage;
import org.apache.wicket.examples.template.Banner;
import org.apache.wicket.examples.template.Banner1;
import org.apache.wicket.examples.template.Banner2;
import org.apache.wicket.markup.html.basic.Label;
import org.apache.wicket.markup.html.link.BookmarkablePageLink;
import org.apache.wicket.markup.html.link.Link;
import org.apache.wicket.model.PropertyModel;

/**
 * Base page that serves as a template for pages that inherit from it. Doesn't have to be abstract,
 * but was made abstract here to stress the fact that this page is not meant for direct use.
 * 
 * @author Eelco Hillenius
 */
public abstract class TemplatePage extends WicketExamplePage
{
	/** title of the current page. */
	private String pageTitle = "(no title)";

	/** the current banner. */
	private Banner currentBanner;

	/**
	 * Constructor
	 */
	public TemplatePage()
	{
		add(new Label("title", new PropertyModel(this, "pageTitle")));
		add(currentBanner = new Banner1("ad"));
		add(new Link("changeAdLink")
		{
			/**
			 * @see org.apache.wicket.markup.html.link.Link#onClick()
			 */
			public void onClick()
			{
				if (currentBanner.getClass() == Banner1.class)
				{
					TemplatePage.this.replace(currentBanner = new Banner2("ad"));
				}
				else
				{
					TemplatePage.this.replace(currentBanner = new Banner1("ad"));
				}
			}
		});
		add(new BookmarkablePageLink("page1Link", Page1.class));
		add(new BookmarkablePageLink("page2Link", Page2.class));
	}

	/**
	 * Gets the title.
	 * 
	 * @return title
	 */
	public final String getPageTitle()
	{
		return pageTitle;
	}

	/**
	 * Sets the title.
	 * 
	 * @param title
	 *            title
	 */
	public final void setPageTitle(String title)
	{
		this.pageTitle = title;
	}
}