org.apache.wicket.markup.html.image.NonCachingImage Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of wicket-core Show documentation

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.

There is a newer version: 10.0.0

Show newest version

/*
 * 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.html.image;

import org.apache.wicket.model.IModel;
import org.apache.wicket.request.mapper.parameter.PageParameters;
import org.apache.wicket.request.resource.IResource;
import org.apache.wicket.request.resource.ResourceReference;

/**
 * A subclass of {@link Image} that always adds random noise to the url every request to prevent the
 * browser from caching the image.
 * 
 * @see Image#shouldAddAntiCacheParameter()
 * 
 * @author Igor Vaynberg (ivaynberg)
 */
public class NonCachingImage extends Image
{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	/**
	 * Construct.
	 * 
	 * @see Image#Image(String, IModel)
	 * 
	 * @param id
	 * @param model
	 */
	public NonCachingImage(String id, IModel model)
	{
		super(id, model);
	}

	/**
	 * Construct.
	 * 
	 * @see Image#Image(String, org.apache.wicket.request.resource.IResource)
	 * 
	 * @param id
	 * @param imageResource
	 */
	public NonCachingImage(String id, IResource imageResource)
	{
		super(id, imageResource);
	}

	/**
	 * Construct.
	 * 
	 * @see Image#Image(String, org.apache.wicket.request.resource.ResourceReference,
	 *      org.apache.wicket.request.mapper.parameter.PageParameters)
	 * 
	 * @param id
	 * @param resourceReference
	 * @param resourceParameters
	 */
	public NonCachingImage(String id, ResourceReference resourceReference,
		PageParameters resourceParameters)
	{
		super(id, resourceReference, resourceParameters);
	}

	/**
	 * Construct.
	 * 
	 * @see Image#Image(String, ResourceReference)
	 * 
	 * @param id
	 * @param resourceReference
	 */
	public NonCachingImage(String id, ResourceReference resourceReference)
	{
		super(id, resourceReference);
	}

	/**
	 * Construct.
	 * 
	 * @see Image#Image(String, String)
	 * 
	 * 
	 * @param id
	 * @param string
	 */
	public NonCachingImage(String id, String string)
	{
		super(id, string);
	}

	/**
	 * Construct.
	 * 
	 * @see Image#Image(String)
	 * 
	 * @param id
	 */
	public NonCachingImage(String id)
	{
		super(id);
	}

	/**
	 * Overriden to precent caching.
	 * 
	 * @return always {@code true}
	 */
	@Override
	protected boolean shouldAddAntiCacheParameter()
	{
		return true;
	}
}