/*
* 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;
import java.util.Optional;
import org.apache.wicket.ajax.AjaxRequestTarget;
import org.apache.wicket.ajax.markup.html.AjaxFallbackLink;
import org.apache.wicket.ajax.markup.html.AjaxLink;
import org.apache.wicket.markup.html.basic.Label;
/**
* A test page for triggering a StackOverflowError when updating a component inside a
* {@link TransparentWebMarkupContainer}, with Wicket auto-adding TWMC's.
*/
public class TransparentContainerWithAutoTransparentContainerPage extends WebPage
{
private static final long serialVersionUID = 1L;
/**
* Constructor.
*/
public TransparentContainerWithAutoTransparentContainerPage()
{
final Label label = new Label("label", "Label");
label.setOutputMarkupId(true);
add(label);
// Letting Wicket auto-add a TransparentWebMarkupContainer to the AJAX link (due to relative
// URL rewriting) causes a StackOverflowException
add(new AjaxLink<Void>("group1")
{
private static final long serialVersionUID = 1L;
@Override
public void onClick(AjaxRequestTarget t)
{
}
});
// But you need two auto-added TWMCs to trigger the StackOverflowError
add(new AjaxLink<Void>("group2")
{
private static final long serialVersionUID = 1L;
@Override
public void onClick(AjaxRequestTarget t)
{
}
});
// a non-AJAX click on this link passes the test case, an AJAX request
// fails with a StackOverflowError
add(new AjaxFallbackLink<Void>("link")
{
private static final long serialVersionUID = 1L;
@Override
public void onClick(Optional<AjaxRequestTarget> targetOptional)
{
targetOptional.ifPresent(target -> target.add(label));
}
});
// if you add this TransparentWebMarkupContainer as first component in
// the page, the test passes
add(new TransparentWebMarkupContainer("twmc"));
}
}