Here is a use-case for my request below:
Let's say I am implementing a traffic stop light Wicket component. There are
only two states, on and off. The default state is off but I can manually
change the state to on. (E.g. some component like a link outside of the traffic
light wicket component).
WicketTrafficLight extends Panel {
WicketTrafficLight() {
super("trafficLight");
setDefaultModel(new Model<String>("EnabledLight"));
}
onAfterRender() {
...
setDefaultModel(new Model<String>("DisabledLight"));
}
}
Some Other Panel :
addAjaxLink() {
onClick() {
setDefaultModel(new Model<String>("EnabledLight"));
}
}
...
<span wicket:id="trafficLight"></span>
-----Original Message-----
From: Igor Vaynberg [mailto:igor.vaynb...@gmail.com]
Sent: Tuesday, January 25, 2011 1:01 PM
To: users@wicket.apache.org
Subject: Re: Call onAfterRender and change default model without error
you didnt answer my question
-igor
On Tue, Jan 25, 2011 at 9:58 AM, Brown, Berlin [GCG-PFS]
<berlin.br...@primerica.com> wrote:
> If we can update the model object and changes its value without problem.
> Shouldn't we also be able to assign a new model?
>
> onBeforeRender() {
> ...
> this.setDefaultModel(new ReadonlyStaticModel("state1"));
> }
>
> onAfterRender() {
> this.setDefaultModel(new ReadonlyStaticModel("state2-reset"));
> }
>
> I guess I could use the backing model object as opposed to the model to
> change the state.
> ... Changed to:
>
> onBeforeRender() {
> ...
> getDefaultModel().set("state1"));
> }
>
> onAfterRender() {
> getDefaultModel().set("state2"));
> }
>
>
> -----Original Message-----
> From: Igor Vaynberg [mailto:igor.vaynb...@gmail.com]
> Sent: Tuesday, January 25, 2011 12:40 PM
> To: users@wicket.apache.org
> Subject: Re: Call onAfterRender and change default model without error
>
> whats the usecase?
>
> -igor
>
> On Tue, Jan 25, 2011 at 9:37 AM, Brown, Berlin [GCG-PFS]
> <berlin.br...@primerica.com> wrote:
>> I tried to do the following below but I got an error could not update
>> component hierarchy.
>> WicketMessage: Cannot modify component hierarchy after render phase
>> has started (page version cant change then anymore)
>>
>> Is there an event method (like onAfterRender) that I could use
>> without error?
>>
>> Component:
>>
>> onBeforeRender() {
>> ...
>> this.setDefaultModel(...);
>> }
>>
>> onAfterRender() {
>> this.setSetDefaultModel(...);
>> }
>>
>> Berlin Brown (POL)
>>
>>
>
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