Maybe it would be simpler to use a mixin, one that calls back to
showValidationMessage()? Yes, please post it.
On 23/06/2010, at 3:49 AM, Katia Aresti Gonzalez wrote:
> 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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