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Posted to users@wicket.apache.org by Luther Baker <lu...@gmail.com> on 2010/09/22 22:01:54 UTC
dynamic crumb trail
I have a default template page that contains a <ul> implementation of a
crumb trail. Therefore, the base class template has both the open and close
tags of the list element. A few links in the crumb trail are manage by the
template class - but I'd like to be able to add a few from the child pages.
I've tried passing a list of 'response' Pages and labels from the child to
the parent but some of the page need to be instantiated and passed arguments
and I end up instantiating response pages before the user ever clicks on a
link.
Can someone chime in with a more elegant approach to this? I feel like I'm
going down a rabbit hole. I guess I could simply create a panel - but then
I'd need to get links from two places ...
Thanks,
-Luther
Re: dynamic crumb trail
Posted by Igor Vaynberg <ig...@gmail.com>.
alternatively, instead of passing the new crumb to super, you can pass
around the entire trail, that way you can say
super(trail);
trail.add(new crumb(getstring("my.page.resource")));
-igor
On Sat, Sep 25, 2010 at 9:53 AM, Igor Vaynberg <ig...@gmail.com> wrote:
> you dont want to pass a crumb around that contains references to other
> pages anyways, i would put all the resources that crumbs need into the
> application-scoped properties file.
>
> -igor
>
> On Sat, Sep 25, 2010 at 9:35 AM, LutherBaker <lu...@gmail.com> wrote:
>>
>> Ah yes, a closure of sorts. Thanks, that was exactly what I was looking for.
>>
>>
>> Since I am passing this to 'super', one issue popped up. I'd like to use a
>> StringResourceModel (and leverage some parameter substitution) but
>> obviously, at page instantiation time, my current page doesn't exist and
>> consequently, can't be used as the StringResourceModel's Component
>> parameter.
>>
>>
>> AreaPage.java
>> ...
>> private static Crumb createCrumb(final Area area) {
>> return new Crumb() {
>>
>> private static final long serialVersionUID = 1L;
>>
>> public WebPage createReponsePage() {
>> return new AreaPage(area);
>> }
>>
>> public IModel label() {
>> return new StringResourceModel("AreaPage.crumb.label",
>> null,
>> new Model(area));
>> }
>> };
>> }
>>
>> public AreaPage(final Area area) {
>> super(createCrumb(area));
>>
>>
>> Note the 'null' in the StringResourceModel ctor since I can't pass 'this'
>> before super(..) completes.
>>
>>
>> This works for me as long as "AreaPage.crumb.label" is in my global
>> properties but the docs discourage said practice so maybe there is another
>> tweak I can apply?
>>
>>
>> -Luther
>>
>>
>>
>>
>>
>> Igor Vaynberg-2 wrote:
>>>
>>> create a wrapper that can instantiate pages lazily
>>>
>>> interface Crumb { IModel getLabel(); Page gePage(); } put your lazy
>>> logic into getPage() impl.
>>>
>>> -igor
>>>
>>
>> --
>> View this message in context: http://apache-wicket.1842946.n4.nabble.com/dynamic-crumb-trail-tp2550978p2713647.html
>> Sent from the Users forum mailing list archive at Nabble.com.
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>
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Re: dynamic crumb trail
Posted by Igor Vaynberg <ig...@gmail.com>.
you dont want to pass a crumb around that contains references to other
pages anyways, i would put all the resources that crumbs need into the
application-scoped properties file.
-igor
On Sat, Sep 25, 2010 at 9:35 AM, LutherBaker <lu...@gmail.com> wrote:
>
> Ah yes, a closure of sorts. Thanks, that was exactly what I was looking for.
>
>
> Since I am passing this to 'super', one issue popped up. I'd like to use a
> StringResourceModel (and leverage some parameter substitution) but
> obviously, at page instantiation time, my current page doesn't exist and
> consequently, can't be used as the StringResourceModel's Component
> parameter.
>
>
> AreaPage.java
> ...
> private static Crumb createCrumb(final Area area) {
> return new Crumb() {
>
> private static final long serialVersionUID = 1L;
>
> public WebPage createReponsePage() {
> return new AreaPage(area);
> }
>
> public IModel label() {
> return new StringResourceModel("AreaPage.crumb.label",
> null,
> new Model(area));
> }
> };
> }
>
> public AreaPage(final Area area) {
> super(createCrumb(area));
>
>
> Note the 'null' in the StringResourceModel ctor since I can't pass 'this'
> before super(..) completes.
>
>
> This works for me as long as "AreaPage.crumb.label" is in my global
> properties but the docs discourage said practice so maybe there is another
> tweak I can apply?
>
>
> -Luther
>
>
>
>
>
> Igor Vaynberg-2 wrote:
>>
>> create a wrapper that can instantiate pages lazily
>>
>> interface Crumb { IModel getLabel(); Page gePage(); } put your lazy
>> logic into getPage() impl.
>>
>> -igor
>>
>
> --
> View this message in context: http://apache-wicket.1842946.n4.nabble.com/dynamic-crumb-trail-tp2550978p2713647.html
> Sent from the Users forum mailing list archive at Nabble.com.
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
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Re: dynamic crumb trail
Posted by LutherBaker <lu...@gmail.com>.
Ah yes, a closure of sorts. Thanks, that was exactly what I was looking for.
Since I am passing this to 'super', one issue popped up. I'd like to use a
StringResourceModel (and leverage some parameter substitution) but
obviously, at page instantiation time, my current page doesn't exist and
consequently, can't be used as the StringResourceModel's Component
parameter.
AreaPage.java
...
private static Crumb createCrumb(final Area area) {
return new Crumb() {
private static final long serialVersionUID = 1L;
public WebPage createReponsePage() {
return new AreaPage(area);
}
public IModel label() {
return new StringResourceModel("AreaPage.crumb.label",
null,
new Model(area));
}
};
}
public AreaPage(final Area area) {
super(createCrumb(area));
Note the 'null' in the StringResourceModel ctor since I can't pass 'this'
before super(..) completes.
This works for me as long as "AreaPage.crumb.label" is in my global
properties but the docs discourage said practice so maybe there is another
tweak I can apply?
-Luther
Igor Vaynberg-2 wrote:
>
> create a wrapper that can instantiate pages lazily
>
> interface Crumb { IModel getLabel(); Page gePage(); } put your lazy
> logic into getPage() impl.
>
> -igor
>
--
View this message in context: http://apache-wicket.1842946.n4.nabble.com/dynamic-crumb-trail-tp2550978p2713647.html
Sent from the Users forum mailing list archive at Nabble.com.
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
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Re: dynamic crumb trail
Posted by Igor Vaynberg <ig...@gmail.com>.
create a wrapper that can instantiate pages lazily
interface Crumb { IModel getLabel(); Page gePage(); } put your lazy
logic into getPage() impl.
-igor
On Wed, Sep 22, 2010 at 1:01 PM, Luther Baker <lu...@gmail.com> wrote:
> I have a default template page that contains a <ul> implementation of a
> crumb trail. Therefore, the base class template has both the open and close
> tags of the list element. A few links in the crumb trail are manage by the
> template class - but I'd like to be able to add a few from the child pages.
>
> I've tried passing a list of 'response' Pages and labels from the child to
> the parent but some of the page need to be instantiated and passed arguments
> and I end up instantiating response pages before the user ever clicks on a
> link.
>
> Can someone chime in with a more elegant approach to this? I feel like I'm
> going down a rabbit hole. I guess I could simply create a panel - but then
> I'd need to get links from two places ...
>
> Thanks,
> -Luther
>
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