Another solution, since we have to ignore the enter key within some
FormComponents:
form.visitChildren(FormComponent.class, new IVisitor()
{
@Override
public Object component(Component component)
{
if (!(component instanceof Button))
component.add(new DisableEnterKeyBehavior());
return IVisitor.CONTINUE_TRAVERSAL;
}
});
public class DisableEnterKeyBehavior extends AbstractBehavior
implements IHeaderContributor
{
private static final long serialVersionUID = 7123908800158111365L;
private FormComponent formComp;
public void renderHead(IHeaderResponse response)
{
response.renderJavascript(
"function ignoreEnterKey(event){return
!(event.keyCode==13 ||
window.event.keyCode==13);}",
"vcomDisableEnterKey");
}
@Override
public final void bind(Component component)
{
if (component == null)
throw new IllegalArgumentException("Argument component
must be not null");
if (formComp != null)
throw new IllegalStateException(
"This behavior cannot be attached to
multiple components; it is
already attached to component "
+ formComp + ", but
component " + component + " wants to be
attached too");
if (!(component instanceof FormComponent))
throw new IllegalArgumentException("This behavior can
only be
attached to a FormComponent.");
formComp = (FormComponent) component;
}
@Override
public final void onComponentTag(Component component, ComponentTag tag)
{
if (formComp.isEnabled() && formComp.isEnableAllowed())
{
tag.put("onkeypress", "return ignoreEnterKey(event);");
}
}
}
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