I have an example with a mixin ... it's in not very very simple, but i can
simplify the mixin for your example... ^_^
2010/6/20 Geoff Callender <geoff.callender.jumpst...@gmail.com>
> Surely someone has an example of this?
>
> On 18/06/2010, at 12:51 PM, Geoff Callender wrote:
>
> > Thanks, Thiago, but it lacks AJAX. I'd like the validator to behave like
> any other client-side validator except that it asks the server to help, eg.
> to validate that a name has not already been used.
> >
> > Geoff
> >
> > On 18/06/2010, at 12:24 PM, Thiago H. de Paula Figueiredo wrote:
> >
> >> On Thu, 17 Jun 2010 22:20:45 -0300, Geoff Callender <
> geoff.callender.jumpst...@gmail.com> wrote:
> >>
> >>> Hi all,
> >>
> >> Hi!
> >>
> >> This is an example of a RGB string validator that I created for my
> Tapestry courses (basic and advanced):
> >>
> >> public class RGBValidator extends AbstractValidator<Void, String> {
> >>
> >> final private static Pattern PATTERN =
> >> Pattern.compile("[0-9A-Fa-f]{6}");
> >>
> >> final private RenderSupport renderSupport;
> >>
> >> final private Asset javascript;
> >>
> >> public RGBValidator(
> >> AssetSource assetSource, RenderSupport
> renderSupport) {
> >>
> >> super(null, String.class, "rgb-validation");
> >> this.renderSupport = renderSupport;
> >> javascript = assetSource.getClasspathAsset(
> >>
> "br/com/arsmachina/cursotapestry/validacao/rgb.js");
> >>
> >> }
> >>
> >> public void render(Field field, Void constraintValue,
> >> MessageFormatter formatter, MarkupWriter writer,
> >> FormSupport formSupport) {
> >>
> >> String message = buildMessage(field, formatter);
> >>
> >> // adds JavaScript validation
> >> formSupport.addValidation(field, "rgb", message, null);
> >>
> >> // includes rgb.js in the page
> >> renderSupport.addScriptLink(javascript);
> >>
> >> // adds a hint to the user. just an example of generating
> >> // HTML inside a validator.
> >> writer.element("span", "class", "hint");
> >> writer.write("Must be filled with 6 digits or letters from
> A to F.");
> >> writer.end();
> >>
> >> }
> >>
> >> @Override
> >> public void validate(Field field, Void constraintValue,
> >> MessageFormatter formatter, String value)
> >> throws ValidationException {
> >>
> >> if (PATTERN.matcher(value).matches() == false) {
> >> String message = buildMessage(field, formatter);
> >> throw new ValidationException(mensagem);
> >> }
> >>
> >> }
> >>
> >> private String buildMesssage(Field field, MessageFormatter
> formatter) {
> >> return formatter.format(field.getLabel());
> >> }
> >>
> >> }
> >>
> >> rgb.js:
> >>
> >> Tapestry.Validator.rgb = function(field, message) {
> >> var regexp = /[0-9A-F]{6}/i;
> >> field.addValidator(function(value) {
> >> if (regexp.test(value) == false && value.length > 0) {
> >> throw message;
> >> }
> >> });
> >> };
> >>
> >> --
> >> Thiago H. de Paula Figueiredo
> >> Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
> and instructor
> >> Owner, Ars Machina Tecnologia da Informação Ltda.
> >> http://www.arsmachina.com.br
> >>
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> >>
> >
>
>
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