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Posted to users@wicket.apache.org by Massimo Redaelli <ma...@aia.ch> on 2015/02/16 12:37:27 UTC
All inside a Panel
Hello everybody. First question from a newbie, sorry if it's stupid.
I'm customizing a software that uses wickets, version 1.5.7. I have to add some behavior, and the only way the framework gives me is making me implement two callbacks, one that is supposed to contain the business logic, and one that returns a panel to be displayed.
These callbacks are called only once, in this order.
This would be perfect if I only needed to show the results, but I also want to ask for user input, in particular I need modal confirmation dialogs.
I tried putting all the business logic in the panel constructor or in a function called after the panel rendering (I know it sucks, but I don't see an alternative), and then using an Ajax Modal dialog.
However, the modal dialog show() function requires an AjaxTarget, which is available only after a user action (click on a link, say). (Actually, I found online that I could use RequestCycle.get().find(AjaxRequestTarget.class), but it's not working for me).
I can simulate a user clicking, using javascript, so I thought I'd put an invisible link and use that, but again I cannot do so inside the flow of the business logic (I managed only on page load...).
What I need is to be able to show a dialog whenever I need, and to wait for a return value.
I even tried linking the dialog display to an onchange handler of a hidden checkbox that I change through its model, but the event doesn't get triggered.
Can anyone give a hand? :)
M.
Re: All inside a Panel
Posted by Martin Grigorov <mg...@apache.org>.
Hi,
This is not possible.
You can load the page until 'somestuff' with empty placeholders for the
rest stuff, then on domready show the first prompt, depending on the
provided value replace some of the placeholders, etc.
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Mon, Feb 16, 2015 at 4:26 PM, Massimo Redaelli <ma...@aia.ch>
wrote:
> Martin,
>
> thanks for the answer!
>
> However, as I said, I *did* manage to open it on pageload. The problem is
> to open it programmatically at any point of a member function of the Panel
> instance.
>
> Ideally, I'd like to do something like:
>
> public MyPanel() {
> // panel creation
> add(...)
> // ...
>
> // business logic
> // somestuff
> // ...
> Boolean userConfirm = modalDialog(...);
> If( userConfirm ) {
> // other stuff
> If( modalDialog("Another question") ) {
> // more stuff
> }
> }
> // other stuff
> }
>
> M.
>
> -----Ursprüngliche Nachricht-----
> Von: Martin Grigorov [mailto:mgrigorov@apache.org]
> Gesendet: Montag, 16. Februar 2015 14:43
> An: users@wicket.apache.org
> Betreff: Re: All inside a Panel
>
> Hi,
>
> See
>
> http://stackoverflow.com/questions/4765790/how-to-open-modaldialog-on-pageload
> I think the second approach/answer is better.
>
> Martin Grigorov
> Wicket Training and Consulting
> https://twitter.com/mtgrigorov
>
> On Mon, Feb 16, 2015 at 1:37 PM, Massimo Redaelli <massimo.redaelli@aia.ch
> >
> wrote:
>
> > Hello everybody. First question from a newbie, sorry if it's stupid.
> >
> > I'm customizing a software that uses wickets, version 1.5.7. I have to
> > add some behavior, and the only way the framework gives me is making
> > me implement two callbacks, one that is supposed to contain the
> > business logic, and one that returns a panel to be displayed.
> > These callbacks are called only once, in this order.
> >
> > This would be perfect if I only needed to show the results, but I also
> > want to ask for user input, in particular I need modal confirmation
> dialogs.
> >
> > I tried putting all the business logic in the panel constructor or in
> > a function called after the panel rendering (I know it sucks, but I
> > don't see an alternative), and then using an Ajax Modal dialog.
> > However, the modal dialog show() function requires an AjaxTarget,
> > which is available only after a user action (click on a link, say).
> > (Actually, I found online that I could use
> > RequestCycle.get().find(AjaxRequestTarget.class), but it's not working
> > for me).
> >
> > I can simulate a user clicking, using javascript, so I thought I'd put
> > an invisible link and use that, but again I cannot do so inside the
> > flow of the business logic (I managed only on page load...).
> >
> > What I need is to be able to show a dialog whenever I need, and to
> > wait for a return value.
> >
> > I even tried linking the dialog display to an onchange handler of a
> > hidden checkbox that I change through its model, but the event doesn't
> > get triggered.
> >
> > Can anyone give a hand? :)
> >
> > M.
> >
>
AW: All inside a Panel
Posted by Massimo Redaelli <ma...@aia.ch>.
Martin,
thanks for the answer!
However, as I said, I *did* manage to open it on pageload. The problem is to open it programmatically at any point of a member function of the Panel instance.
Ideally, I'd like to do something like:
public MyPanel() {
// panel creation
add(...)
// ...
// business logic
// somestuff
// ...
Boolean userConfirm = modalDialog(...);
If( userConfirm ) {
// other stuff
If( modalDialog("Another question") ) {
// more stuff
}
}
// other stuff
}
M.
-----Ursprüngliche Nachricht-----
Von: Martin Grigorov [mailto:mgrigorov@apache.org]
Gesendet: Montag, 16. Februar 2015 14:43
An: users@wicket.apache.org
Betreff: Re: All inside a Panel
Hi,
See
http://stackoverflow.com/questions/4765790/how-to-open-modaldialog-on-pageload
I think the second approach/answer is better.
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Mon, Feb 16, 2015 at 1:37 PM, Massimo Redaelli <ma...@aia.ch>
wrote:
> Hello everybody. First question from a newbie, sorry if it's stupid.
>
> I'm customizing a software that uses wickets, version 1.5.7. I have to
> add some behavior, and the only way the framework gives me is making
> me implement two callbacks, one that is supposed to contain the
> business logic, and one that returns a panel to be displayed.
> These callbacks are called only once, in this order.
>
> This would be perfect if I only needed to show the results, but I also
> want to ask for user input, in particular I need modal confirmation dialogs.
>
> I tried putting all the business logic in the panel constructor or in
> a function called after the panel rendering (I know it sucks, but I
> don't see an alternative), and then using an Ajax Modal dialog.
> However, the modal dialog show() function requires an AjaxTarget,
> which is available only after a user action (click on a link, say).
> (Actually, I found online that I could use
> RequestCycle.get().find(AjaxRequestTarget.class), but it's not working
> for me).
>
> I can simulate a user clicking, using javascript, so I thought I'd put
> an invisible link and use that, but again I cannot do so inside the
> flow of the business logic (I managed only on page load...).
>
> What I need is to be able to show a dialog whenever I need, and to
> wait for a return value.
>
> I even tried linking the dialog display to an onchange handler of a
> hidden checkbox that I change through its model, but the event doesn't
> get triggered.
>
> Can anyone give a hand? :)
>
> M.
>
Re: All inside a Panel
Posted by Martin Grigorov <mg...@apache.org>.
Hi,
See
http://stackoverflow.com/questions/4765790/how-to-open-modaldialog-on-pageload
I think the second approach/answer is better.
Martin Grigorov
Wicket Training and Consulting
https://twitter.com/mtgrigorov
On Mon, Feb 16, 2015 at 1:37 PM, Massimo Redaelli <ma...@aia.ch>
wrote:
> Hello everybody. First question from a newbie, sorry if it's stupid.
>
> I'm customizing a software that uses wickets, version 1.5.7. I have to add
> some behavior, and the only way the framework gives me is making me
> implement two callbacks, one that is supposed to contain the business
> logic, and one that returns a panel to be displayed.
> These callbacks are called only once, in this order.
>
> This would be perfect if I only needed to show the results, but I also
> want to ask for user input, in particular I need modal confirmation dialogs.
>
> I tried putting all the business logic in the panel constructor or in a
> function called after the panel rendering (I know it sucks, but I don't see
> an alternative), and then using an Ajax Modal dialog.
> However, the modal dialog show() function requires an AjaxTarget, which is
> available only after a user action (click on a link, say). (Actually, I
> found online that I could use
> RequestCycle.get().find(AjaxRequestTarget.class), but it's not working for
> me).
>
> I can simulate a user clicking, using javascript, so I thought I'd put an
> invisible link and use that, but again I cannot do so inside the flow of
> the business logic (I managed only on page load...).
>
> What I need is to be able to show a dialog whenever I need, and to wait
> for a return value.
>
> I even tried linking the dialog display to an onchange handler of a hidden
> checkbox that I change through its model, but the event doesn't get
> triggered.
>
> Can anyone give a hand? :)
>
> M.
>