Because I'm stubborn, and wanted to get the "send" button (and a
checkbox) enabled via ajax only when the user has entered the right data
in the form.
The only way I seem to be able to do that is in the way below.
But on the other hand I'm starting to think that might not be a good way
to do things. The user gets no real good feedback as to *why* the
button/checkbox is not enabled if I do it that way...
/Stefan
On 2009-07-01 16:55, Igor Vaynberg wrote:
not sure why you are going through all that. add the validator.
behavior#onupdate() will be called when validation passes and the
model is updated, behavior#onerror() will be called if there is an
error.
-igor
2009/7/1 Stefan Malmesjö<s.m.mo...@gmail.com>:
Ok... I think I solved it, but it feels like it's an over complicated way of
doing it... comments?
-------------------
final TextField<String> fromAddress = new TextField<String>("fromAddress");
// fromAddress.add(EmailAddressValidator.getInstance());
fromAddress.add(new AjaxFormComponentUpdatingBehavior("onchange") {
@Override
protected void onUpdate(AjaxRequestTarget target) {
IValidatable<String> fromAddressForValidation = new
IValidatable<String>() {
private boolean isValid = true;
public void error(IValidationError error) {
isValid = false;
}
public String getValue() {
return fromAddress.getValue();
}
public boolean isValid() {
return isValid;
}
};
EmailAddressValidator.getInstance()
.validate(fromAddressForValidation);
if (fromAddressForValidation.isValid()) {
System.out.println("valid!");
} else {
System.out.println("not valid");
}
}
}.setThrottleDelay(Duration.ONE_SECOND));
-------------------
On 2009-06-30 18:15, Stefan Malmesjö wrote:
The subject should have been AjaxFormComponentUpdatingBehavior... sorry
about that :-[
On 2009-06-30 18:12, Stefan Malmesjö wrote:
Hi,
I'm playing around with validation and ajax, and can't quite seem to do
what I want. The goal is to have a checkbox toggle enabled/disabled
depending on whether the user has entered a valid email address. So, my
simple test looks like this:
------------------
final TextField<String> fromAddress = new
TextField<String>("fromAddress");
fromAddress.add(EmailAddressValidator.getInstance());
fromAddress.add(new AjaxFormComponentUpdatingBehavior("onchange")
{
@Override
protected void onUpdate(AjaxRequestTarget target) {
if (fromAddress.isValid()) {
System.out.println("valid");
} else {
System.out.println("not valid");
}
}
}.setThrottleDelay(Duration.ONE_SECOND));
----------------
If the entered address is valid, then I do get the expected output
"valid"
But if it's not valid, then I get a warning message:
--------------
WARN - WebSession - Component-targetted feedback message
was left unrendered. This could be because you are missing a FeedbackPanel
on the page. Message: [FeedbackMessage message = "'asd...@l' is not a valid
email address.", reporter = fromAddress, level = ERROR]
------------
I do have a feedbackpanel on the page (if I submit the form, then I get
the "asd...@l is not a valid email address" output there).
However, I really don't want the error message being output during the
ajax process, I just want to see if it's valid, and then enable/disable the
checkbox accordingly.
I also tried playing with AjaxEventBehavior instead of
AjaxFormComponentUpdatingBehavior, but then the value of the input field
always is null, and hence valid :) I tried using fromAddress.inputChanged,
but that made no difference that I could see.
I'm sure I'm making some stupid mistake. Can anyone guide me in the right
direction?
/Stefan
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