Ajax re-render fails if a instantiation listener calls setOutputMarkupId(true)
on every component.
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Key: WICKET-3584
URL: https://issues.apache.org/jira/browse/WICKET-3584
Project: Wicket
Issue Type: Bug
Components: wicket-core
Affects Versions: 1.4.17
Environment: Windows Vista, JDK 1.6_22, Eclipse Helios, Maven 3.0.x
Reporter: Ronald Tetsuo Miura
If you setup a IComponentInstantiationListener that calls
setOutputMarkupId(true) to every component, the tags with the enclosure
attribute don't get re-rendered on ajax requests, because the generated IDs
from the HTML placeholder and the Ajax response don't match.
Code:
public class App extends WebApplication {
@Override
protected void init() {
addComponentInstantiationListener(new IComponentInstantiationListener() {
public void onInstantiation(Component component) {
component.setOutputMarkupId(true);
}
});
}
@Override
public Class<? extends Page> getHomePage() {
return HomePage.class;
}
}
public class HomePage extends WebPage {
public HomePage() {
final Label label = new Label("label", "VISIBLE!");
add(label.setVisible(false).setOutputMarkupId(true));
add(new AjaxLink<Void>("link") {
@Override
public void onClick(AjaxRequestTarget target) {
label.setVisible(!label.isVisible());
target.addComponent(label);
}
});
}
}
<html xmlns:wicket="http://wicket.apache.org";>
<body>
<a wicket:id="link">Clique!</a>
<div wicket:enclosure="label">
<hr/>
<h1 wicket:id="label"></h1>
<hr/>
</div>
</body>
</html>
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