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Posted to users@tapestry.apache.org by leon <ma...@gmail.com> on 2011/03/19 03:14:17 UTC
How to implement nested components?
Hi all,
I have a requirement to implement nested components, it like this:
<t:comA>
<t:comB/>
<t:comB/>
<t:comB/>
</t:comA>
I have created components, but I can't access embedded components in comA:
public class comA {
@Inject
private ComponentResources resources;
void setupRender() {
ComponentModel model = resources.getComponentModel();
List<String> embeddedIds = model.getEmbeddedIds();
// The problem is that embeddedIds.size() is 0!
}
}
So, Is this a wrong way? I'm so confused.
Any idea? thanks!
--
Best Regards
Li Guoqiang
Re: How to implement nested components?
Posted by Taha Hafeez <ta...@gmail.com>.
It will help if you share the code with us
regards
Taha
On Wed, Mar 23, 2011 at 7:26 AM, leon <ma...@gmail.com> wrote:
> Sorry, My question is :are there some documentations about nested
> components?
> I tried to inspect the component in debug model, but they're all null
> objects, I'm using IDEA 10, I don't know if is caused by IDE or Tapestry
> IoC.
> So how could i trace a component's lifecycle?
>
> On Mon, Mar 21, 2011 at 8:41 PM, Thiago H. de Paula Figueiredo <
> thiagohp@gmail.com> wrote:
>
> > On Sun, 20 Mar 2011 22:50:20 -0300, leon <ma...@gmail.com> wrote:
> >
> > Thanks a lot, I will try it, I looks Tapestry's component's relationship
> >> is build by component class rather than component template.
> >>
> >
> > Wrong. It's defined by template. Using @InjectComponent or
> > getEmbeddedComponent() is just a way of getting the nested component
> > instance.
> >
> >
> > So, are there some dos about this?
> >>
> >
> > Could you rephrase your question?
> >
> >
> > --
> > Thiago H. de Paula Figueiredo
> > Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
> > and instructor
> > Owner, Ars Machina Tecnologia da Informação Ltda.
> > http://www.arsmachina.com.br
> >
>
>
>
> --
> Best Regards
> Li Guoqiang
>
Re: How to implement nested components?
Posted by leon <ma...@gmail.com>.
Thanks for your reply!
Actually, I want to know how to implement nested components. I will show you
my scenario:
1. Requirment: A wizard that include some step to guide users complete a
task, e.g. a sale order
2. Current Implementation: I implemented two components Wizard and
WizardStep, and use them like this:
<t:wizard steps="[step1,step2,step3]">
<t:wizardStep name="step1">
step1 content
</t:wizardStep>
<t:wizardStep name="step2">
step2 content
</t:wizardStep>
<t:wizardStep name="step3">
step3 content
</t:wizardStep>
</t:wizard>
// wizard class
@Property
private WizardStep[] steps;
in this way, I need to pass WizardSteps as Property. But I want to use them
as follows:
<t:wizard>
<t:wizardStep name="step1">
step1 content
</t:wizardStep>
<t:wizardStep name="step2">
step2 content
</t:wizardStep>
<t:wizardStep name="step3">
step3 content
</t:wizardStep>
</t:wizard>
//wizard class
@Inject
private ComponentResources resources;
private WizardStep[] steps;
@SetupRender
private viod setupRender(){
//initialize steps by iterate child components
steps = initSteps();
}
//I want to use ComponentResources to get WizardSteps ids then use
getEmbeddedComponent() to get WizardStep instance.
private void initSteps() {
List<String> stepIds =
resources.getComponentModel().getEmbeddedComponentIds();
//Why stepIds is empy! so the follows codes will never execute!
steps = new WizardStep[stepIds.size())];
int i = 0;
for (String stepId: stepIds){
steps[i++] = resources.getEmbeddedComponent(stepId);
}
}
I am really confused, what's wrong with my second implementing?
Any suggestion? Thanks!
On Wed, Mar 23, 2011 at 8:17 PM, Thiago H. de Paula Figueiredo <
thiagohp@gmail.com> wrote:
> On Tue, 22 Mar 2011 22:56:28 -0300, leon <ma...@gmail.com> wrote:
>
> Sorry, My question is :are there some documentations about nested
>> components?
>>
>
> All components are nested, so I don't know what you're asking. A non-page
> component instance doesn't exist outside a page, which is almost the same as
> a component, so all components are nested.
>
>
> I tried to inspect the component in debug model, but they're all null
>> objects, I'm using IDEA 10, I don't know if is caused by IDE or Tapestry
>> IoC.
>>
>
> This is not caused by the IDE or Tapestry-IoC, but by Tapestry(-core)
> itself. It was already solved for 5.3-SNAPSHOT.
>
>
> So how could i trace a component's lifecycle?
>>
>
> See this: http://tapestry.apache.org/component-rendering.html.
>
>
> --
> Thiago H. de Paula Figueiredo
> Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
> and instructor
> Owner, Ars Machina Tecnologia da Informação Ltda.
> http://www.arsmachina.com.br
>
--
Best Regards
Li Guoqiang
Re: How to implement nested components?
Posted by "Thiago H. de Paula Figueiredo" <th...@gmail.com>.
On Tue, 22 Mar 2011 22:56:28 -0300, leon <ma...@gmail.com> wrote:
> Sorry, My question is :are there some documentations about nested
> components?
All components are nested, so I don't know what you're asking. A non-page
component instance doesn't exist outside a page, which is almost the same
as a component, so all components are nested.
> I tried to inspect the component in debug model, but they're all null
> objects, I'm using IDEA 10, I don't know if is caused by IDE or Tapestry
> IoC.
This is not caused by the IDE or Tapestry-IoC, but by Tapestry(-core)
itself. It was already solved for 5.3-SNAPSHOT.
> So how could i trace a component's lifecycle?
See this: http://tapestry.apache.org/component-rendering.html.
--
Thiago H. de Paula Figueiredo
Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
and instructor
Owner, Ars Machina Tecnologia da Informação Ltda.
http://www.arsmachina.com.br
---------------------------------------------------------------------
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Re: How to implement nested components?
Posted by leon <ma...@gmail.com>.
Sorry, My question is :are there some documentations about nested
components?
I tried to inspect the component in debug model, but they're all null
objects, I'm using IDEA 10, I don't know if is caused by IDE or Tapestry
IoC.
So how could i trace a component's lifecycle?
On Mon, Mar 21, 2011 at 8:41 PM, Thiago H. de Paula Figueiredo <
thiagohp@gmail.com> wrote:
> On Sun, 20 Mar 2011 22:50:20 -0300, leon <ma...@gmail.com> wrote:
>
> Thanks a lot, I will try it, I looks Tapestry's component's relationship
>> is build by component class rather than component template.
>>
>
> Wrong. It's defined by template. Using @InjectComponent or
> getEmbeddedComponent() is just a way of getting the nested component
> instance.
>
>
> So, are there some dos about this?
>>
>
> Could you rephrase your question?
>
>
> --
> Thiago H. de Paula Figueiredo
> Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
> and instructor
> Owner, Ars Machina Tecnologia da Informação Ltda.
> http://www.arsmachina.com.br
>
--
Best Regards
Li Guoqiang
Re: How to implement nested components?
Posted by "Thiago H. de Paula Figueiredo" <th...@gmail.com>.
On Sun, 20 Mar 2011 22:50:20 -0300, leon <ma...@gmail.com> wrote:
> Thanks a lot, I will try it, I looks Tapestry's component's relationship
> is build by component class rather than component template.
Wrong. It's defined by template. Using @InjectComponent or
getEmbeddedComponent() is just a way of getting the nested component
instance.
> So, are there some dos about this?
Could you rephrase your question?
--
Thiago H. de Paula Figueiredo
Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
and instructor
Owner, Ars Machina Tecnologia da Informação Ltda.
http://www.arsmachina.com.br
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
For additional commands, e-mail: users-help@tapestry.apache.org
Re: How to implement nested components?
Posted by leon <ma...@gmail.com>.
Thanks a lot, I will try it, I looks Tapestry's component's relationship is
build by component class rather than component template.
So, are there some dos about this?
On Sat, Mar 19, 2011 at 9:37 PM, Thiago H. de Paula Figueiredo <
thiagohp@gmail.com> wrote:
> On Sat, 19 Mar 2011 01:16:21 -0300, Taha Hafeez <ta...@gmail.com>
> wrote:
>
> resources.getContainerResources().getEmbeddedComponent(nested_component_id);
>>
>
> Also this:
>
> @InjectComponent
> private ComB comB; // the name of the field should be the same as the
> component's t:id
>
> or
>
> @InjectComponent("componentId")
> private ComB anyFieldname;
>
> --
> Thiago H. de Paula Figueiredo
> Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
> and instructor
> Owner, Ars Machina Tecnologia da Informação Ltda.
> http://www.arsmachina.com.br
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
> For additional commands, e-mail: users-help@tapestry.apache.org
>
>
--
Best Regards
Li Guoqiang
Re: How to implement nested components?
Posted by "Thiago H. de Paula Figueiredo" <th...@gmail.com>.
On Sat, 19 Mar 2011 01:16:21 -0300, Taha Hafeez <ta...@gmail.com>
wrote:
> resources.getContainerResources().getEmbeddedComponent(nested_component_id);
Also this:
@InjectComponent
private ComB comB; // the name of the field should be the same as the
component's t:id
or
@InjectComponent("componentId")
private ComB anyFieldname;
--
Thiago H. de Paula Figueiredo
Independent Java, Apache Tapestry 5 and Hibernate consultant, developer,
and instructor
Owner, Ars Machina Tecnologia da Informação Ltda.
http://www.arsmachina.com.br
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@tapestry.apache.org
For additional commands, e-mail: users-help@tapestry.apache.org
Re: How to implement nested components?
Posted by Taha Hafeez <ta...@gmail.com>.
Hi
AFAIK, the nested components(comB) can be accessed from the container's
ComponentResources not the component's(comA) and the nested components(comB)
are present in the container not the component(comA)... So you need to know
the nested component's id to access it which can be passed as a parameter to
the component(comA)
Try
resources.getContainerResources().getEmbeddedComponent(nested_component_id);
regards
Taha
On Sat, Mar 19, 2011 at 7:44 AM, leon <ma...@gmail.com> wrote:
> Hi all,
> I have a requirement to implement nested components, it like this:
> <t:comA>
> <t:comB/>
> <t:comB/>
> <t:comB/>
> </t:comA>
>
> I have created components, but I can't access embedded components in comA:
> public class comA {
> @Inject
> private ComponentResources resources;
>
> void setupRender() {
> ComponentModel model = resources.getComponentModel();
> List<String> embeddedIds = model.getEmbeddedIds();
> // The problem is that embeddedIds.size() is 0!
> }
> }
>
> So, Is this a wrong way? I'm so confused.
> Any idea? thanks!
> --
> Best Regards
> Li Guoqiang
>