Re: SubmitListener [auf Viren geprueft]

[Eric Fesler <er...@audaxis.com>]

Hi Jonathan,

thanks for you reply.

I though to a solution similar to yours but I wanted to find a more
generic model.

Finally, I extended the standard Form and Submit component and when
rendering the form during the rewind process I trigger the new listeners
(I called them PostFormListener) of the extended Submit component.

It's little bit tricky but it works.

--ERic

On Thu, 2004-09-30 at 12:37, Jonathan O'Connor wrote:
> Eric,
> After getting into lots of trouble with using listeners attached to each 
> button, I have changed our forms to have a single form submit. All the 
> buttons use selected="ognl:buttonPressed" tag="buttonName" stuff. Then in 
> my listener, I do something like:
> 
> public void formSubmit(IRequestCycle cycle) {
>         if ("button1".equals(getButtonPressed()) handleButton1(cycle);
>         else if ("button2".equals(getButtonPressed()) 
> handleButton2(cycle);
> }
> 
> Of course, this is a bit ugly, and the style Police will surely kill me 
> for it, but its very safe code. When we have listeners directly attached 
> to each button, we had to be very careful not to add or remove rows from a 
> ForEach table. The reason: button listeners are executed before rewinding 
> has completed. The form listener only runs after rewinding, so its safe to 
> change collections then.
> 
> Occasionally, we have to break our rule, and actually write a button 
> listener. E.g. In a table, each row might have a delete button. In this 
> case, the button listener remembers which row was selected, and sets the 
> buttonPressed property to "deleteRow", which is then handled in the normal 
> way in our form submit.
> 
> Hope this helps,
> Jonathan O'Connor
> XCOM Dublin
> 
> 
> 
> Eric Fesler <er...@audaxis.com> 
> 30/09/2004 07:42
> Please respond to
> "Tapestry users" <ta...@jakarta.apache.org>
> 



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