You can write a behaviour for it so it will be more reusable.
The following is based on
http://cwiki.apache.org/WICKET/request-focus-on-a-specific-form-component.html
and
works for both regular and ajax requests.
private final class MyLink extends AjaxFallbackLink
{
public void onClick(AjaxRequestTarget target)
{
onShowForm(target);
myField.add(new FocusBehavior());
}
}
public class FocusBehavior extends AbstractBehavior
{
/**
*
*/
private static final long serialVersionUID = 1L;
@Override
public void bind(Component component) {
super.bind(component);
component.setOutputMarkupId(true);
final Response response = component.getResponse();
if (response instanceof WebResponse && !((WebResponse)response).isAjax()) {
component.setComponentBorder(new IComponentBorder() {
/**
*
*/
private static final long serialVersionUID = 1L;
public void renderBefore(Component component) {
}
public void renderAfter(Component component) {
final Response response = component.getResponse();
response.write(
"<script type=\"text/javascript\"
language=\"javascript\">document.getElementById(\"" +
component.getMarkupId() +
"\").focus()</script>");
}
});
}
this.component = component;
}
private Component component;
@Override
public void renderHead(IHeaderResponse response) {
if (response.getResponse() instanceof WebResponse &&
((WebResponse)response.getResponse()).isAjax()) {
response.renderOnLoadJavascript("document.getElementById('" +
component.getMarkupId() + "').focus()");
}
}
@Override
public boolean isTemporary() {
return true;
}
}
On Thu, Jan 29, 2009 at 4:07 PM, Philipp Daumke <dau...@averbis.de> wrote:
> Hi Michael,
>
> thanks for your help, but it doesn't work yet. My code:
>
> TextField myField = new TextField("text");
> myField.setOutputMarkupId(true);
> myField.setOutputMarkupPlaceholderTag(true);
> add(myField);
>
> private final class MyLink extends AjaxFallbackLink
> {
> public void onClick(AjaxRequestTarget target)
> {
> onShowForm(target);
> target.appendJavascript("getElementById('"+myField.getMarkupId()+
> "').focus()");
> }
> }
>
> Is there something obviously wrong? Correct Javascript syntax and semantic?
> Is there an alternative "wicket" approach so that I don't have to use
> Javascript myself?
> Thanks for help
> Philipp
>
>
> use target.(pre|append)Javascript if you want additional JS executed
>> before/after doing the wicket-ajax stuff
>>
>> if you only want to set the focus (without any ajax involved), don't use
>> ajaxlink, use e.g. a simple WebmarkupContainer
>>
>> hth,
>> michael
>>
>>
>> Philipp Daumke-2 wrote:
>>
>>
>>> Dear all,
>>>
>>> I try to show and focus on a text field when clicking on a link. The
>>> focus however doesn't work. I tried to follow an example in cwiki (
>>> http://cwiki.apache.org/WICKET/calling-javascript-function-on-wicket-components-onclick.html)
>>> but I somehow do something wrong. I tried to add some javascript attribute
>>> via AttributeAppender, but then I get a null pointer exception in onClick
>>> ("target is null"). When I comment that line out (so don't add the
>>> Attribute), everything works fine except that focus doesn't work.
>>>
>>> Any help appreciated.
>>> Thanks a lot
>>> Philipp
>>>
>>> Here's my code:
>>>
>>> in a WebMarkupContainer:
>>> link.add(new AttributeAppender("onClick", new
>>> Model("getElementById('"+textfield.getMarkupId()+ "').onFocus();"), ";"));
>>>
>>> in my custom Link Class:
>>> public void onClick(AjaxRequestTarget target)
>>> {
>>> showFormThatContainsTextField(target);
>>> }
>>>
>>> void showFormThatContainsTextField(AjaxRequestTarget target)
>>> {
>>> // toggle the visibility
>>> ...
>>> // redraw the add container.
>>> target.addComponent(this);
>>> }
>>>
>>> --
>>>
>>> Averbis GmbH
>>> c/o Klinikum der Albert-Ludwigs-Universität
>>> Stefan-Meier-Strasse 26
>>> D-79104 Freiburg
>>>
>>> Fon: +49 (0) 761 - 203 6707
>>> Fax: +49 (0) 761 - 203 6800
>>> E-Mail: dau...@averbis.de
>>>
>>> Geschäftsführer: Dr. med. Philipp Daumke, Kornél Markó
>>> Sitz der Gesellschaft: Freiburg i. Br.
>>> AG Freiburg i. Br., HRB 701080
>>>
>>>
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>>>
>>>
>>>
>>>
>>>
>>
>>
>> -----
>> Michael Sparer
>> http://techblog.molindo.at
>>
>>
>
>
> --
>
> Averbis GmbH
> c/o Klinikum der Albert-Ludwigs-Universität
> Stefan-Meier-Strasse 26
> D-79104 Freiburg
>
> Fon: +49 (0) 761 - 203 6707
> Fax: +49 (0) 761 - 203 6800
> E-Mail: dau...@averbis.de
>
> Geschäftsführer: Dr. med. Philipp Daumke, Kornél Markó
> Sitz der Gesellschaft: Freiburg i. Br.
> AG Freiburg i. Br., HRB 701080
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscr...@wicket.apache.org
> For additional commands, e-mail: users-h...@wicket.apache.org
>
>
--
Matthew Rollins Hanlon
http://squareoftwo.org
_____________________
Hanlon's Razor:
"Never attribute to malice that which can be adequately explained by
stupidity."
http://wikipedia.org/wiki/Hanlon's_razor
