This is not possible with ListView.
You have to switch to RefreshingView with a ReuseIfModelsEqualStrategy.
Hope this helps
Sven
On 08/02/2012 08:45 PM, Benjamin Heiskell wrote:
That makes the TextFields reflect their original model correctly, but
it also disposes of any modified values.
For example:
1. List starts with "1", "2", "3"
2. Add two entries "4", "5"
3. Modify "1" to "modified"
4. Remove "2"
What I would like to see is: "modified", "3", "4", "5"
What I end up seeing is: "1", "3", "", ""
On Thu, Aug 2, 2012 at 1:44 PM, Sven Meier <[email protected]> wrote:
After submit your TextFields still have their previous RAW_INPUT, call
form#clearInput() so they render the value from the model.
Sven
On 08/02/2012 05:31 PM, Benjamin Heiskell wrote:
Additions seem to work fine with setReuseItems(true), but I've been
having trouble with removals. My remove AjaxButton calls
listView.getList().remove(item.getIndex()), but that always removes
the last element. Am I making an incorrect assumption about how this
should work?
The following is a simplified version of my FormComponentPanel that
replicates the problem. It's used the a CompoundPropertyModel with a
POJO containing the string list.
public class TextFieldListView extends FormComponentPanel<List<String>> {
private static final long serialVersionUID = 1L;
private final ListView<String> listView;
public TextFieldListView(final String id) {
super(id);
setOutputMarkupId(true);
listView = new ListView<String>("list") {
private static final long serialVersionUID = 1L;
@Override
protected void populateItem(final ListItem<String> item) {
final TextField<String> textField = new
TextField<String>("item", item.getModel());
item.add(textField);
item.add(new RemoveButton("remove", item));
}
};
listView.setReuseItems(true);
add(listView);
add(new AddButton("add"));
}
@Override
public void onInitialize() {
super.onInitialize();
listView.setModel(getModel());
}
@SuppressWarnings("unchecked")
protected void convertInput() {
this.setConvertedInput((List<String>)listView.getList());
}
private class AddButton extends AjaxButton {
private static final long serialVersionUID = 1L;
public AddButton(final String id) {
super(id);
setDefaultFormProcessing(false);
}
@Override
protected void onSubmit(final AjaxRequestTarget target, final
Form<?> form) {
listView.getModelObject().add("");
target.add(TextFieldListView.this);
}
@Override
protected void onError(final AjaxRequestTarget target, final
Form<?> form) {
throw new IllegalStateException("AJAX request threw an
error");
}
}
private class RemoveButton extends AjaxButton {
private static final long serialVersionUID = 1L;
private final ListItem<String> item;
public RemoveButton(final String id, final ListItem<String> item)
{
super(id);
this.item = item;
setDefaultFormProcessing(false);
}
@Override
protected void onSubmit(final AjaxRequestTarget target, final
Form<?> form) {
listView.getList().remove(item.getIndex());
target.add(TextFieldListView.this);
}
@Override
protected void onError(final AjaxRequestTarget target, final
Form<?> form) {
throw new IllegalStateException("AJAX request threw an
error");
}
};
}
Thanks!
On Thu, Aug 2, 2012 at 10:13 AM, Andrea Del Bene <[email protected]>
wrote:
Hi,
what kind of problem have you encountered with ListView?
Hi,
I have a List<String> that I want to represent with TextFields. I need
to be able to dynamically add and remove them via AJAX.
From what I’ve read online (and experienced firsthand) ListViews do
not seem to be designed for this.
What is the best way to approach this problem?
Thanks!
Ben
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