Dynamic Form inconsistent behavior inside/outside a ListView
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Key: WICKET-2694
URL: https://issues.apache.org/jira/browse/WICKET-2694
Project: Wicket
Issue Type: Bug
Components: wicket
Affects Versions: 1.4.5
Environment: Wicket 1.4.5 , resin-3.1.9 , CentOS 5.4
Reporter: smallufo
The original discuss thread is here :
http://old.nabble.com/Cannot-get-default-invisible-TextField's-ModelObject---td27251305.html
I have a form , which is embedded in a ListView ,
The form contains a radio button.
When user clicks the radio button , a default-invisible textfield is set
visible.
But I cannot get the textfield's Model Object , it is null ...
To make it more clear :
When the radio button is clicked , by implement AjaxEventBehavior("onClick")
, a default-invisible WebMarkupContainer is set visible ,
The WebMarkupContainer contains other TextFields , which I cannot get their
values at all ....
If the form is not embedded in a ListView , everything works fine .
I think it is an inconsistent behavior and should be fixed.
MyPage.html
<table border="1">
<tr>
<th>name</th>
<th>more ?</th>
</tr>
<span wicket:id="listView">
<form wicket:id="form">
<tr>
<td wicket:id="name">[name]</td>
<td>
<span wicket:id="radioGroup">
<input type="radio" wicket:id="yes"/>yes
<input type="radio" wicket:id="no"/>no
</span>
</td>
</tr>
<tr wicket:id="more">
<td colspan="2">
<input type="text" size="40" value="Please leave comments"
wicket:id="textfield"/>
<input type="submit" value="Submit" wicket:id="submit"/>
</td>
</tr>
</form>
</span>
</table>
public class MyPage extends WebPage
{
private final static List<String> names = new ArrayList<String>();
static
{
names.add("Andy");
names.add("Brian");
names.add("Carol");
}
public MyPage()
{
ListView<String> listView = new ListView<String>("listView" , names)
{
@Override
protected void populateItem(ListItem<String> item)
{
Form<Void> form = new Form<Void>("form");
item.add(form);
String name = item.getModelObject();
form.add(new Label("name" , name));
final WebMarkupContainer more = new WebMarkupContainer("more");
more.setVisible(false);
more.setOutputMarkupPlaceholderTag(true);
form.add(more);
final RadioGroup<Boolean> radioGroup = new
RadioGroup<Boolean>("radioGroup" , Model.of(Boolean.FALSE));
form.add(radioGroup);
Radio<Boolean> yes = new Radio<Boolean>("yes" ,
Model.of(Boolean.TRUE));
Radio<Boolean> no = new Radio<Boolean>("no" ,
Model.of(Boolean.FALSE));
radioGroup.add(yes);
radioGroup.add(no);
yes.add(new AjaxEventBehavior("onClick")
{
@Override
protected void onEvent(AjaxRequestTarget target)
{
more.setVisible(true);
target.addComponent(more);
}
});
no.add(new AjaxEventBehavior("onClick")
{
@Override
protected void onEvent(AjaxRequestTarget target)
{
more.setVisible(false);
target.addComponent(more);
}
});
final TextField<String> textfield = new
TextField<String>("textfield" , new Model<String>());
more.add(textfield);
AjaxButton button = new AjaxButton("submit")
{
@Override
protected void onSubmit(AjaxRequestTarget arg0, Form<?> form)
{
System.out.println("radioGroup = " + radioGroup.getModelObject()
+ " , textfield.getModelObject() = " + textfield.getModelObject());
}
};
more.add(button);
}
};
add(listView);
}
}
screen capture :
http://xs.to/image-B859_4B57CDD0.gif
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