Place your table inside a CheckGroup and add the validator there.
Below is my implementation of this validator:
import org.apache.wicket.validation.IValidatable;
import org.apache.wicket.validation.IValidator;
import org.apache.wicket.validation.ValidationError;
public class AtLeastOneSelectedValidator<T> implements
IValidator<Collection<T>> {
private static final long serialVersionUID = 1L;
private String resourceKey;
public AtLeastOneSelectedValidator(String resourceKey) {
setResourceKey(resourceKey);
}
@Override
public void validate(IValidatable<Collection<T>> validatable) {
int numSelected = validatable.getValue().size();
if(numSelected < 1) {
validatable.error(new
ValidationError().addKey(getResourceKey()));
}
}
public void setResourceKey(String resourceKey) {
this.resourceKey = resourceKey;
}
public String getResourceKey() {
return resourceKey;
}
}
On Wed, May 15, 2013 at 11:28 AM, Saravanan <saravanan...@tcs.com> wrote:
> I have Listview with multiple checkboxes. I need to do validation that
> atleast one checkbox is selected.
>
> For this I have used Custom validator to validate checkboxes and throw
> error. This validator has list having checkboxes
>
> In Listview populateItem method I am adding the checkboxes to this
> validator
> list. But issue is how to add validator to form.
> I used checkbox.getform().add(validator); But it is adding for every
> checkbox in listview. So on running application validate method of
> validator
> is called for each checkbox.
> How to resolve ths. Kindly provide input
>
> #########################################
> new ListView<T>("repeater", listModel) {
>
>
> @Override
> protected void populateItem(final ListItem<T> item) {
> final T current = item.getModelObject();
>
> final IModel<Boolean> cbModel = new
> ListChoiceCheckBoxModel<T>(current, binding) {
> @Override
> protected boolean isChoiceEnabled(final T choice) {
> return
> EnumCheckBoxRepeaterPanel.this.isChoiceEnabled(choice);
> }
> };
> CheckBox chkbox = new AjaxCheckBox("checkbox", cbModel) {
> @Override
> protected void onConfigure() {
> setEnabled(isChoiceEnabled(current));
> }
> };
>
> item.add(chkbox);
> validator.addComponents(chkbox);
> chkbox.getForm().add(new CheckboxesSelectValidator(chkBoxList,
> "Invalid"));
> item.add(new Label("label", localizedModel(labels,
> current)));
> }
> }.setReuseItems(true);
>
> #########################################
> public class CheckboxesSelectValidator extends AbstractFormValidator {
>
> private static final long serialVersionUID = -5475763159946590330L;
> /** form components to be checked. */
> // private final CheckBox[] components;
> private final String optionsMessage;
> private final List<CheckBox> components;
>
> public CheckboxesSelectValidator(final List<CheckBox> components, final
> String optionsMessage) {
> this.components = components;
> this.optionsMessage = optionsMessage;
> }
>
> public void addComponents(final CheckBox checkbox) {
> components.add(checkbox);
> }
>
> @Override
> public FormComponent[] getDependentFormComponents() {
> return components.toArray(new FormComponent[components.size()]);
> }
>
> @Override
> public void validate(final Form<?> form) {
> for (CheckBox component : components) {
> component.isEnabled();
> component.getValue();
> }
>
> }
>
> }
>
>
>
>
> --
> View this message in context:
> http://apache-wicket.1842946.n4.nabble.com/Adding-Custom-validator-for-Listview-having-multiple-checkboxes-tp4658825.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
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>
