problem populating ListMultipleChoice selection model
Hi All,
I'm trying to do something pretty simple: create a choice list with
multi-select, which I iterate through upon clicking a button.
Unfortunately, it looks like my selections aren't being recorded in the
model that's supposed to receive them. Here's what the pertinent code looks
like:
- Java:
public EditIssuePage extends WebPage {
// I've tried removing the 'transient' keyword, but that doesn't change
anything
transient private Set Party selectedParties = new HashMap Party ();
...
public EditIssuePage () {
...
Form form = new Form (editIssueForm);
add (form);
...
ListMultipleChoice Party partyChoice = new ListMultipleChoice
Party (
parties,
new PropertyModel (this, selectedParties),
new LoadableDetachableModel List Party () {
@Override
public List Party load () {
return new Vector Party (retrieveAllPartiesFromDAO ());
}
},
new IChoiceRenderer Party () {
public Object getDisplayValue (Party object) {
return object.getFullName ();
}
public String getIdValue (Party object, int index) {
return object.getId ();
}
}
);
Button addPartiesButton = new Button (addPartiesButton) {
@Override
public void onSubmit () {
logger.debug (Number of selected parties: +
selectedParties.size ()); // always reporting zero!
for (Party selectedParty : selectedParties) {
...
}
}
};
form.add (partyChoice);
form.add (addPartiesButton);
}
private Set Party retrieveAllPartiesFromDAO () {
// does what it sounds like
}
}
- HTML: (My memory is a bit hazy here; I don't have any of this code in
front of me as I write this)
...
select multiple wicket:id=parties
option[A party should be here]/option
/select
submit wicket:id=addPartiesButton name=Add Selected Parties/
...
The page renders fine, with all Party objects listed for selection. But
when I select one or more of the rows and click the button, the log message
I see is Number of selected parties: 0, no matter what. I have very
similar logic working on another page, so I'm pretty confused about what's
the problem here. All advice is much appreciated.
Thanks,
Ray Weidner
Re: problem populating ListMultipleChoice selection model
Try to change the type of selectedParties from set to List selectedParties
= new ArrayList();
2010/4/19 Ray Weidner ray.weidner.wic...@gmail.com
Hi All,
I'm trying to do something pretty simple: create a choice list with
multi-select, which I iterate through upon clicking a button.
Unfortunately, it looks like my selections aren't being recorded in the
model that's supposed to receive them. Here's what the pertinent code
looks
like:
- Java:
public EditIssuePage extends WebPage {
// I've tried removing the 'transient' keyword, but that doesn't change
anything
transient private Set Party selectedParties = new HashMap Party ();
...
public EditIssuePage () {
...
Form form = new Form (editIssueForm);
add (form);
...
ListMultipleChoice Party partyChoice = new ListMultipleChoice
Party (
parties,
new PropertyModel (this, selectedParties),
new LoadableDetachableModel List Party () {
@Override
public List Party load () {
return new Vector Party (retrieveAllPartiesFromDAO ());
}
},
new IChoiceRenderer Party () {
public Object getDisplayValue (Party object) {
return object.getFullName ();
}
public String getIdValue (Party object, int index) {
return object.getId ();
}
}
);
Button addPartiesButton = new Button (addPartiesButton) {
@Override
public void onSubmit () {
logger.debug (Number of selected parties: +
selectedParties.size ()); // always reporting zero!
for (Party selectedParty : selectedParties) {
...
}
}
};
form.add (partyChoice);
form.add (addPartiesButton);
}
private Set Party retrieveAllPartiesFromDAO () {
// does what it sounds like
}
}
- HTML: (My memory is a bit hazy here; I don't have any of this code in
front of me as I write this)
...
select multiple wicket:id=parties
option[A party should be here]/option
/select
submit wicket:id=addPartiesButton name=Add Selected Parties/
...
The page renders fine, with all Party objects listed for selection. But
when I select one or more of the rows and click the button, the log message
I see is Number of selected parties: 0, no matter what. I have very
similar logic working on another page, so I'm pretty confused about what's
the problem here. All advice is much appreciated.
Thanks,
Ray Weidner
Re: problem populating ListMultipleChoice selection model
Hi Moez,
I'll give that a try when I have the code in front of me. But I'd be
surprised if that works, because I am doing precisely the same thing on
another page, including using a Set for the selected item model. In that
instance, there's no problem.
On Mon, Apr 19, 2010 at 11:55 AM, moèz ben rhouma
benrhouma.m...@gmail.comwrote:
Try to change the type of selectedParties from set to List selectedParties
= new ArrayList();
2010/4/19 Ray Weidner ray.weidner.wic...@gmail.com
Hi All,
I'm trying to do something pretty simple: create a choice list with
multi-select, which I iterate through upon clicking a button.
Unfortunately, it looks like my selections aren't being recorded in the
model that's supposed to receive them. Here's what the pertinent code
looks
like:
- Java:
public EditIssuePage extends WebPage {
// I've tried removing the 'transient' keyword, but that doesn't change
anything
transient private Set Party selectedParties = new HashMap Party ();
...
public EditIssuePage () {
...
Form form = new Form (editIssueForm);
add (form);
...
ListMultipleChoice Party partyChoice = new ListMultipleChoice
Party (
parties,
new PropertyModel (this, selectedParties),
new LoadableDetachableModel List Party () {
@Override
public List Party load () {
return new Vector Party (retrieveAllPartiesFromDAO
());
}
},
new IChoiceRenderer Party () {
public Object getDisplayValue (Party object) {
return object.getFullName ();
}
public String getIdValue (Party object, int index) {
return object.getId ();
}
}
);
Button addPartiesButton = new Button (addPartiesButton) {
@Override
public void onSubmit () {
logger.debug (Number of selected parties: +
selectedParties.size ()); // always reporting zero!
for (Party selectedParty : selectedParties) {
...
}
}
};
form.add (partyChoice);
form.add (addPartiesButton);
}
private Set Party retrieveAllPartiesFromDAO () {
// does what it sounds like
}
}
- HTML: (My memory is a bit hazy here; I don't have any of this code in
front of me as I write this)
...
select multiple wicket:id=parties
option[A party should be here]/option
/select
submit wicket:id=addPartiesButton name=Add Selected Parties/
...
The page renders fine, with all Party objects listed for selection. But
when I select one or more of the rows and click the button, the log
message
I see is Number of selected parties: 0, no matter what. I have very
similar logic working on another page, so I'm pretty confused about
what's
the problem here. All advice is much appreciated.
Thanks,
Ray Weidner
