Thanks for the response. Attached is the markup and the java classes for the
panel. It's slightly modified since normally a DataView is used, but the
behaviour is the same with the ListView. This is only the panel class and not
a complete quickstart.
Here is the markup
<html xmlns:wicket>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title>TreeDataViewPanel</title>
</head>
<body>
<wicket:panel>
<table>
<thead>
<tr>
<th></th>
<th>Name</th>
<th>Vorname</th>
</tr>
</thead>
<tbody>
<div wicket:id="overview">
<div wicket:id="extendingRow">USer Data here</div>
</div>
</tbody>
</table>
</wicket:panel>
</body>
</html>
<wicket:fragment wicket:id="rowView">
<tr>
<td>
<a wicket:id="extendLink">
<span wicket:id="extendSymbol">Arrow</span>
</a>
</td>
<td>
<div wicket:id="name">Name</div>
<div wicket:id ="details">
<ul>
<li><b>Again</b><span wicket:id="strasse">Strasse</span></li>
</ul>
</div>
</td>
<td><span wicket:id="vorname">Vorname</span></td>
</tr>
</wicket:fragment>
and the corresponding Java
public class TreeDataViewPanel extends Panel {
private List<String> userList = Arrays.asList("User 1","User 2","User 3");
public TreeDataViewPanel(String id) {
super (id);
ListView<String> userTable = new ListView<String>("overview", userList) {
@Override
protected void populateItem(ListItem<String> item) {
String user = item.getModelObject();
DetailFragment dataView =
new DetailFragment("extendingRow","rowView",user);
dataView.setOutputMarkupId(true);
item.add(dataView);
}
};
add(userTable);
}
}
class DetailFragment extends Fragment {
private boolean compressed = true;
public boolean isCompressed() {
return compressed;
}
public void setCompressed(boolean compressed) {
this.compressed = compressed;
}
public DetailFragment(String id, String markupId, String user) {
super(id, markupId);
WebMarkupContainer detailContainer = new WebMarkupContainer("details") {
@Override
public boolean isVisible() {
return !isCompressed();
}
};
add(new DropDownLink("extendLink", this));
add(new Label("name", user));
add(new Label("vorname", user));
detailContainer.add(new Label("strasse", user));
add(detailContainer);
}
}
class DropDownLink extends AjaxLink {
DetailFragment parent;
Label compressedSymbol = new Label("extendSymbol","\u25B6"); // 9654
Label expandSymbol = new Label("extendSymbol","\u25BC"); // 9660
Label linkSymbol;
@Override
public void onClick(AjaxRequestTarget target) {
if (parent.isCompressed()) {
linkSymbol.replaceWith(expandSymbol);
linkSymbol = expandSymbol;
parent.setCompressed(false);
} else {
linkSymbol.replaceWith(compressedSymbol);
linkSymbol = compressedSymbol;
parent.setCompressed(true);
}
target.addComponent(linkSymbol);
target.addComponent(parent);
}
public DropDownLink(String id, DetailFragment parent) {
super(id);
linkSymbol = compressedSymbol;
linkSymbol.setOutputMarkupId(true);
expandSymbol.setOutputMarkupId(true);
compressedSymbol.setOutputMarkupId(true);
this.parent = parent;
add(linkSymbol);
}
}
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