Thanks Igor, I was having the same issue as Jason (see [Wicket-user]
Getting value of a text field via Ajax, no form )
I changed to using AjaxFormComponentUpdatingBehavior and all is happy.
Thanks again, Tim
Igor Vaynberg wrote:
havent looked at your code but here is how i would do it
class mypanel extends panel {
private String value;
//getter+setter
public mypanel() {
TextField tf=new TextField("tf", new PropertyModel(this,
"value"));
Label l=new Label("l", new propertyModel(this, "value"));
.....
}
}
-igor
On 3/8/07, Tim Squires <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I'm trying to get working a panel containing a TextField and a Label.
> The label contains the hex value for the TextField content. The
> TextField is Ajaxed so that it updates the label on each key press.
>
> Unfortunalty, I cannot retrieve the value from the TextField, it
> always returns a null. Will someone elighten me to the best way to
> retrieve the current TextField value?
>
> Code is included below.
>
> Thanks for your help,
> Tim
>
> public class TextFieldWithHexValue extends Panel {
>
> private static final Log logger = LogFactory
> .getLog(TextFieldWithHexValue.class);
>
> @SuppressWarnings("serial")
> public TextFieldWithHexValue(String id, final PropertyModel
> model,
> int tabindex) {
> super(id);
> final TextField textField = new TextField("text field
> with hex", model);
> textField.setOutputMarkupId(true);
> add(textField);
>
> textField.add(new AttributeModifier("tabindex", true,
> new Model(
> tabindex)));
> textField.setOutputMarkupId(true);
>
> // Server Port Hex
> Model hexModel = new Model() {
> public Object getObject(Component arg0) {
> logger.debug("Calculating hex
> value...");
> String value = model.getObject(null) +
> "";
> logger.debug("Pre hexed value = " +
> value);
>
> if (StringUtils.isNotEmpty(value)) {
> StringBuffer buffer = new
> StringBuffer();
> StringTokenizer tokens = new
> StringTokenizer(value, ".");
> while (tokens.hasMoreTokens())
{
> String token =
> tokens.nextToken();
> try {
> Integer hex =
> new Integer(token);
>
> buffer.append(StringUtils.leftPad(Integer
>
> .toHexString(hex), 2, '0'));
> } catch
> (NumberFormatException e) {
>
> logger.warn("Unable to format >>" + token
>
> + "<< to hex");
> }
> }
> return
> buffer.toString().toUpperCase();
> } else
> return "";
> }
> };
> final Label hexLabel = new Label("hex for text field",
> hexModel);
> hexLabel.setOutputMarkupId(true);
>
> textField.add(new AjaxEventBehavior("onkeypress") {
> protected void onEvent(AjaxRequestTarget
> target) {
> logger.debug("value has changed,
> recalculate hex value....");
> target.addComponent(hexLabel);
> }
> });
> add(hexLabel);
> }
> }
>
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