GXT prevent action execution if validation fails

Question

i'd like to know if there's a way to use the validation state of a form's fields to authorize/prevent an action to be performed.

It may be clearer with an example. I'm displaying a form with mandatory fields to be filled in order to create a record in db, and a save button to do so.

I'd like the save button action to be prevented if the static validation of the form is not ok. Is there a built-in mechanism to do so? Thanks

Answer 1

FormPanel has a method isValid that will automatically validate all the contained fields (implementing IsField) by calling isValid on them. If any returns false, the form's isValid method will also return false.

You can use the FormPanel.isValid call in a ClickHandler for your form's save button and just return without doing anything if it's not valid.

@UiHandler("formPanel")
void onSave(ClickEvent event) {
    if (!formPanel.isValid()) {
        return;
    }

    saveToDb();
}