page navigation (return to arbitrary page)

[Joachim Van der Auwera <jo...@progs.be>]

I have situation where I have a page in my application which can be 
reached from many different pages. When a certain link is indicated, I 
want the user to move back to the previous page. The problem is that 
this class has no idea (cannot know) what the possible return pages are.

I thought about using a mechanism like the following, on the originator 
pages, include an actionlink component with the following code

---- OriginatorPage

@InjectPage
private DestinationPage destination;

Object onActionFromLink()
{
    // initialize
    destinationPage.setReturnPage( this );
    return destination;
}
-----

On the destination page, I would have another actionlink to get back to 
the originator page.

----- DestinationPage

@Persist
private Object returnPage;

public void setReturnPage( Object o ) { returnPage = o; }

Object onActionFromLinkback()
{
    return page;
}

-----

Unfortunately this does not work, presumably because the originator page 
is detached.

Is there some way serialize/deserialize a page so that I can be used?

It would be possible to add two methods which store/restore all the 
persisted fields, but I still need to be able to attach/inject a page of 
which the page name is not known in advance.

Any suggestions?

Thanks for the help,
Joachim

-- 
Joachim Van der Auwera
PROGS bvba, progs.be


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Re: page navigation (return to arbitrary page)

[Ulrich Stärk <ul...@spielviel.de>]

I think this is the wrong place to ask for help. This list is mainly for 
developing purposes. So unless you want to discuss the innards of 
Tapestry (which does not include how to use it) you should post to the 
user mailing list. You are much more likely to receive help there.

Cheers

Uli

Joachim Van der Auwera schrieb:
> I have situation where I have a page in my application which can be 
> reached from many different pages. When a certain link is indicated, I 
> want the user to move back to the previous page. The problem is that 
> this class has no idea (cannot know) what the possible return pages are.
> 
> I thought about using a mechanism like the following, on the originator 
> pages, include an actionlink component with the following code
> 
> ---- OriginatorPage
> 
> @InjectPage
> private DestinationPage destination;
> 
> Object onActionFromLink()
> {
>    // initialize
>    destinationPage.setReturnPage( this );
>    return destination;
> }
> -----
> 
> On the destination page, I would have another actionlink to get back to 
> the originator page.
> 
> ----- DestinationPage
> 
> @Persist
> private Object returnPage;
> 
> public void setReturnPage( Object o ) { returnPage = o; }
> 
> Object onActionFromLinkback()
> {
>    return page;
> }
> 
> -----
> 
> Unfortunately this does not work, presumably because the originator page 
> is detached.
> 
> Is there some way serialize/deserialize a page so that I can be used?
> 
> It would be possible to add two methods which store/restore all the 
> persisted fields, but I still need to be able to attach/inject a page of 
> which the page name is not known in advance.
> 
> Any suggestions?
> 
> Thanks for the help,
> Joachim
> 


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