Are you referring to the example from book "Apache-Wicket-Cookbook",
page n°34? If so, how do you populate the list of C? Maybe you should
not set to null B model when you change value in A.
If you can try to give an example of values from A,B and C.
On 11/16/2011 07:33 PM, Alberto wrote:
On 11/16/2011 06:06 PM, Andrea Del Bene wrote:
Hi,
can you elaborate a little bit more what behavior you want to achieve?
I mean, C becomes empty because A#onSelectionChanged sets its model
to null. This should not be strange.
Yes, sounds obvious to me too. But I found an examples with 2
dropdownchoice where in onSelectionChanged() of the first one is set to
null the model of the second one.
For two choices works well.
Maybe is a wrong pattern, but I not found anything useful.
Do you have other solutions?
A
I have a form with with 3 choice components:
A) DropDownChoice
B) DropDownChoice
C) ListMultipleChoice
The values of B depend on selected value of A.
The values of C depend on selected values of A and B
I override the wantOnSelectionChangedNotifications() and
onSelectionChanged() methods of A and B.
A#onSelectionChanged
@Override
protected void onSelectionChanged(IntegerSelectChoice newSelection) {
super.onSelectionChanged(newSelection);
SearchForm.this.getModelObject().setInstrument(null);
SearchForm.this.getModelObject().setParams(null);
}
B#onSelectionChanged
@Override
protected void onSelectionChanged(IntegerSelectChoice newSelection) {
super.onSelectionChanged(newSelection);
SearchForm.this.getModelObject().setParams(null);
}
In A I set to null the model value of both B and C.
In B I set to null the model value only of B.
This code works only on the startup of the form. When I change the
value in A the list of C become empty. I have to change the value of
B to fill C.
http://www.corriere.it/index.shtml?refresh_ce
How can I manage this?
A
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