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Aug 12

A new step-by-step tutorial on how to integrate a Yahoo! User Interface Library (YUI) AutoComplete control with Wicket can be found here:

Wicket Tutorial: YUI AutoComplete using JSON and Ajax

It covers quite a few Wicket concepts, such as:

  • Creating a re-usable Wicket custom component
  • How to use a Wicket Ajax “Behavior”
  • Integrating a third party JavaScript widget into a Wicket application
  • Packaging CSS and JS resources needed for the custom component
  • How the required CSS and JS can be contributed to the HTML <HEAD> on demand
  • Hooking into the Wicket Ajax life cycle
  • Returning custom JSON data from the Wicket server-side component

Do check it out!

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Aug 07

A great contribution from Vit Rozkovec gives us a Wicket Behavior that renders a mailto link for an email address based model.

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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 cz.newforms.wicket.behavior;

import org.apache.wicket.Component;
import org.apache.wicket.behavior.AbstractBehavior;

/**
 * Behavior that encapsulates model object into mailto: link.
 *
 * @author Vit Rozkovec
 */
public class EmailBehavior extends AbstractBehavior
{

	/**
	 * Construct.
	 */
	public EmailBehavior()
	{
	}

	/**
	 * @see org.apache.wicket.behavior.AbstractBehavior#beforeRender(org.apache.wicket.Component)
	 */
	@Override
	public void beforeRender(Component component)
	{
		super.beforeRender(component);
		component.getResponse().write(
			"<a href='mailto:" + component.getDefaultModelObjectAsString() + "'>");
	}

	/**
	 * @see org.apache.wicket.behavior.AbstractBehavior#onRendered(org.apache.wicket.Component)
	 */
	@Override
	public void onRendered(Component component)
	{
		super.onRendered(component);
		component.getResponse().write("</a>");
	}

}
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Jul 31

We just finished up a little blog post talking about upgrading the sample app from 5 Days of Wicket to Wicket 1.4 which was just released. Learn about a simple conversion to 1.4 of MysticPaste.com on Mystic’s blog. We review some of our findings:

  • Generify everything for the most benefit
  • Deprecated classes now exist making some of your code obsolete
  • Some configuration changes and libraries move around

Overall the process of upgrading took a little under 30 minutes, and for a medium to large code base probably would take a little less than a day from estimates we’re hearing.

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