Adam,
There's a LOT of different suggestions for expanding the Select component on
the wiki, and your's is pretty good and different from the others. I think
you should consider add it to wiki, so other developers will have more
choices to pick until a better solution is not included in the core.
2008/3/25, Adam Zimowski <[EMAIL PROTECTED]>:
>
> Is the way I'm building my custom select model the "approved" Tap 5
> way? My concern is if OptionModelImpl and SelectModelImpl are still
> considered internal Tapestry classes and should be avoided? This stuff
> works fine for me and it's fairly elegant (IMHO), I just want to know
> if there is a better way.
>
> <div class="w-row">
> <div class="w-tlabel"><t:label for="article" />:</div>
> <t:select t:id="article" style="width:60%;" t:value="articleId"
> t:model="articlesModel" /></div>
>
>
> @Cached
> public SelectModel getArticlesModel() {
>
> final List<SelfHelpArticleBean> articles = getArticles();
>
> return new SelectModel() {
>
> private final SelectModel model;
>
> {
> OptionModel[] options = new OptionModel[
> articles.size()+1];
> options[0] = new OptionModelImpl("--
> Please Select", 0);
> int index = 1;
> for(SelfHelpArticleBean article :
> articles) {
> String label = article.getId() +
> ":
> " + article.getAnchorBody();
> int value = article.getId();
> options[index++] = new
> OptionModelImpl(label, value);
> }
>
> model = new SelectModelImpl(options);
> }
>
> public List<OptionGroupModel> getOptionGroups() {
> return model.getOptionGroups();
> }
>
> public List<OptionModel> getOptions() {
> return model.getOptions();
> }
>
> public void visit(SelectModelVisitor aVisitor) {
> model.visit(aVisitor);
> }
>
> };
>
> }
>
>
> On Tue, May 8, 2007 at 12:50 AM, Bill Holloway <[EMAIL PROTECTED]>
> wrote:
> > I'm just hoping for a stable, best-practice, and relatively simple way
> > to set things up like Selects. Whatever you think is the best
> > approach and put in the documentation.
> >
> > Things like selects should be a snap, IMHO.
> >
> > Bill
> >
> >
> >
> > On 5/7/07, Howard Lewis Ship <[EMAIL PROTECTED]> wrote:
> > > My approach has to been to keep everything internal if possible. Thus
> an
> > > interface is public, the implementation is internal.
> > >
> > > If something is truly necessary, such as OptionModelImpl, there are
> two
> > > approaches:
> > >
> > > 1) Make the implementation class public (possibly breaking existing
> code
> > > that extends from the internal class) .... oh, and probably make it
> final as
> > > well.
> > >
> > > 2) Define a public factory service for the implementation.
> > >
> > > Right now, you can actually use the TypeCoercer as a kind of factory;
> if you
> > > pass in a comma-separated string and ask for an SelectModel you'll
> get it.
> > > Here, though, you're looking for something a little better adapted to
> your
> > > entity classes. However, a bare-bones implementation of OptionModel
> (that
> > > always returns false for isDisabled(), and null for getAttributes() )
> is
> > > only a couple of lines of code.
> > >
> > > I think T4 fell into a trap of too much convenience stuff exposed as
> public
> > > APIs. I would rather err on the side of over-zealousness for
> T5. You can
> > > take internals public, but not the other way around, and once
> something is
> > > public, it also is (or should be) final.
> > >
> > > On 5/7/07, Bill Holloway <[EMAIL PROTECTED]> wrote:
> > > >
> > > > I've written similar code -- while remembering that OptionModelImpl
> is
> > > > an "internal" class that Howard, in the documentation, has
> admonished
> > > > us not to use.
> > > >
> > > > Community, what's the better solution?
> > > >
> > > > Bill
> > > >
> > > > On 5/7/07, Joel Wiegman <[EMAIL PROTECTED]> wrote:
> > > > > Eureka!
> > > > >
> > > > > Finally got it all working. What caused the drop down to not be
> > > > > defaulting is the fact that I declared my "Brand" list in two
> separate
> > > > > lists... One for the ValueEncoder and one for the
> SelectModel. Big no
> > > > > no! An "equals" is called on the value from the SelectModel and
> the
> > > > > value from the ValueEncoder, so if they are initialized as
> separate
> > > > > objects in separate lists the framework won't notice that they
> are equal
> > > > > (because they would point to a different memory location). I
> found that
> > > > > the framework also seems to like things better if the List of
> Brands is
> > > > > "@Persist"ed between pages. Here's the final source code that I
> used to
> > > > > get it all working (Enjoy!):
> > > > >
> > > > > Brand.java (simple POJO):
> > > > >
> > > > > public class Brand {
> > > > >
> > > > > private String id;
> > > > > private String description;
> > > > >
> > > > > public Brand() {}
> > > > >
> > > > > public Brand(String id, String description) {
> > > > > this.id = id;
> > > > > this.description = description;
> > > > > }
> > > > >
> > > > > public String getId() {
> > > > > return id;
> > > > > }
> > > > >
> > > > > public String getDescription() {
> > > > > return description;
> > > > > }
> > > > >
> > > > > }
> > > > >
> > > > >
> > > > > Test.java
> > > > >
> > > > > public class Test {
> > > > >
> > > > > @Persist
> > > > > private Brand brand;
> > > > >
> > > > > @Persist
> > > > > private List<Brand> brands;
> > > > >
> > > > > public Brand getBrand() {
> > > > > return brand;
> > > > > }
> > > > >
> > > > > public void setBrand(Brand brand) {
> > > > > this.brand = brand;
> > > > > }
> > > > >
> > > > > private List<Brand> getBrands()
> > > > > {
> > > > > if(brands == null) {
> > > > > brands = new ArrayList<Brand>();
> > > > > brands.add(new Brand("1", "Brand 1"));
> > > > > brands.add(new Brand("2", "Brand 2"));
> > > > > brands.add(new Brand("3", "Brand 3"));
> > > > > brands.add(new Brand("4", "Brand 4"));
> > > > > }
> > > > >
> > > > > return brands;
> > > > > }
> > > > >
> > > > > public BrandSelectModel getBrandSelectModel() {
> > > > > return new BrandSelectModel(getBrands());
> > > > > }
> > > > >
> > > > > public BrandValueEncoder getBrandValueEncoder() {
> > > > > return new BrandValueEncoder(getBrands());
> > > > > }
> > > > >
> > > > > public class BrandValueEncoder implements
> ValueEncoder<Brand> {
> > > > >
> > > > > private List<Brand> brands;
> > > > >
> > > > > public BrandValueEncoder(List<Brand> brands) {
> > > > > this.brands = brands;
> > > > > }
> > > > >
> > > > > public String toClient(Brand brand) {
> > > > > return brand.getDescription();
> > > > > }
> > > > >
> > > > > public Brand toValue(String string) {
> > > > > for(Brand brand : brands) {
> > > > >
> > > > > if(brand.getDescription().equals(string)) {
> > > > > return brand;
> > > > > }
> > > > > }
> > > > > return null;
> > > > > }
> > > > >
> > > > > }
> > > > >
> > > > > public class BrandSelectModel implements SelectModel {
> > > > >
> > > > > private List<Brand> brands;
> > > > >
> > > > > public BrandSelectModel(List<Brand> brands) {
> > > > > this.brands = brands;
> > > > > }
> > > > >
> > > > > public List<OptionGroupModel> getOptionGroups() {
> > > > > return null;
> > > > > }
> > > > >
> > > > > public List<OptionModel> getOptions() {
> > > > > List<OptionModel> optionModelList = new
> > > > > ArrayList<OptionModel>();
> > > > > for(Brand brand: brands) {
> > > > > optionModelList.add(
> > > > > new OptionModelImpl(
> > > > >
> brand.getDescription(),
> > > > > false,
> > > > > brand,
> > > > > new String[0]
> > > > > )
> > > > > );
> > > > > }
> > > > > return optionModelList;
> > > > > }
> > > > >
> > > > > }
> > > > >
> > > > > }
> > > > >
> > > > >
> > > > > Test.html
> > > > >
> > > > > <html xmlns:t="
> http://tapestry.apache.org/schema/tapestry_5_0_0.xsd";>
> > > > > <t:form>
> > > > >
> > > > > <select t:type="select" t:id="brand"
> > > > > value="brand" model="brandSelectModel"
> > > > > encoder="brandValueEncoder"
> > > > > onchange="this.form.submit();" />
> > > > >
> > > > > <br/>
> > > > >
> > > > > <t:if test="brand">
> > > > > ${brand.description}
> > > > > </t:if>
> > > > >
> > > > > </t:form>
> > > > > </html>
> > > > >
> > > > >
> > > > > -----Original Message-----
> > > > > From: Howard Lewis Ship [mailto:[EMAIL PROTECTED]
> > > > > Sent: Monday, May 07, 2007 12:17 PM
> > > > > To: Tapestry users
> > > > > Subject: Re: T5: SelectModel - a real world example
> > > > >
> > > > > Odd that you lost your value; the field is itself persistent
> (@Persist).
> > > > > Unless you are testing on a multi-machine cluster, you shouldn't
> see any
> > > > > problems along these lines!
> > > > >
> > > > > On 5/7/07, Joel Wiegman <[EMAIL PROTECTED]> wrote:
> > > > > >
> > > > > > Impressive! I was injecting that value via Spring to bootstrap
> it.
> > > > > > Makes sense I should have removed that...
> > > > > >
> > > > > > No errors now... However, the field doesn't appear to be
> binding on a
> > > > >
> > > > > > form submission. The encoder and the model appear to be
> receiving and
> > > > >
> > > > > > returning the correct values, the brand getter and setter
> appear to be
> > > > >
> > > > > > getting called, and the dropdown renders correctly except that
> it
> > > > > > always appears to be reset to the default value...
> > > > > >
> > > > > > I apologize for being so high-maintenance. If there is a
> working
> > > > > > example of a T5 binding select box anywhere on the web, please
> point
> > > > > > me there and I will leave you alone!
> > > > > >
> > > > > > Main.html
> > > > > >
> > > > > > <t:form>
> > > > > > <select t:type="select" class="mint_font_black_background"
> > > > > > t:id="brand"
> > > > > > value="brand" model="brandSelectModel"
> encoder="brandValueEncoder"
> > > > > > onchange="this.form.submit();" />
> > > > > > </t:form>
> > > > > >
> > > > > >
> > > > > > Main.java
> > > > > >
> > > > > > public class Main {
> > > > > >
> > > > > > @Inject
> > > > > > @SpringBean("enterprise")
> > > > > > private Enterprise enterprise;
> > > > > >
> > > > > > @Persist
> > > > > > private Brand brand;
> > > > > >
> > > > > > public Brand getBrand() {
> > > > > > return brand;
> > > > > > }
> > > > > >
> > > > > > public void setBrand(Brand brand) {
> > > > > > this.brand = brand;
> > > > > > }
> > > > > >
> > > > > > public BrandSelectModel getBrandSelectModel() {
> > > > > > return new BrandSelectModel(
> enterprise.getBrands());
> > > > > > }
> > > > > >
> > > > > > public BrandValueEncoder getBrandValueEncoder() {
> > > > > > return new BrandValueEncoder(
> enterprise.getBrands());
> > > > > > }
> > > > > >
> > > > > > public class BrandValueEncoder implements
> ValueEncoder<Brand>
> > > > > > {
> > > > > >
> > > > > > private List<Brand> brands;
> > > > > >
> > > > > > public BrandValueEncoder(List<Brand> brands) {
> > > > > > this.brands = brands;
> > > > > > }
> > > > > >
> > > > > > public String toClient(Brand brand) {
> > > > > > return brand.getDescription();
> > > > > > }
> > > > > >
> > > > > > public Brand toValue(String string) {
> > > > > > for(Brand brand : brands) {
> > > > > >
> > > > > > if(brand.getDescription().equals(string)) {
> > > > > > return brand;
> > > > > > }
> > > > > > }
> > > > > > return null;
> > > > > > }
> > > > > >
> > > > > > }
> > > > > >
> > > > > > public class BrandSelectModel implements SelectModel {
> > > > > >
> > > > > > private List<Brand> brands;
> > > > > >
> > > > > > public BrandSelectModel(List<Brand> brands) {
> > > > > > this.brands = brands;
> > > > > > }
> > > > > >
> > > > > > public List<OptionGroupModel> getOptionGroups()
> {
> > > > > > return null;
> > > > > > }
> > > > > >
> > > > > > public List<OptionModel> getOptions() {
> > > > > > List<OptionModel> optionModelList =
> > > > > > new ArrayList<OptionModel>();
> > > > > > for(Brand brand: brands) {
> > > > > > optionModelList.add(
> > > > > > new OptionModelImpl(
> > > > > > brand.getDescription(),
> > > > > > false,
> > > > > > brand,
> > > > > > new String[0]
> > > > > > )
> > > > > > );
> > > > > > }
> > > > > > return optionModelList;
> > > > > > }
> > > > > >
> > > > > > }
> > > > > >
> > > > > > }
> > > > > >
> > > > > >
> > > > > >
> > > > > > -----Original Message-----
> > > > > > From: Howard Lewis Ship [mailto:[EMAIL PROTECTED]
> > > > > > Sent: Saturday, May 05, 2007 9:45 PM
> > > > > > To: Tapestry users
> > > > > > Subject: Re: T5: SelectModel - a real world example
> > > > > >
> > > > > > What annotations are on the brand field of your Main
> class? Something
> > > > >
> > > > > > has changes that field to be read-only, which is usually a sign
> that a
> > > > >
> > > > > > value was injected.
> > > > > >
> > > > > > On 5/4/07, Joel Wiegman <[EMAIL PROTECTED]> wrote:
> > > > > > >
> > > > > > > Still getting unintuitive errors... I've added the
> ValueEncoder and
> > > > > > > now when I submit the form I get the following stack trace
> (and yes
> > > > > > > the "Main" component has a setBrand(Brand) method, which from
> the
> > > > > > > root
> > > > > >
> > > > > > > cause exception seems to be the cause of the problem?):
> > > > > > >
> > > > > > > [ERROR] RequestExceptionHandler Processing of request failed
> with
> > > > > > > uncaught exception:
> > > > > > > org.apache.tapestry.ioc.internal.util.TapestryException:
> Failure
> > > > > > > writing parameter value of component
> com.foo.pages.Main:brand: Field
> > > > >
> > > > > > > com.foo.pages.Main.brand is read-only. [at
> > > > > > > context:WEB-INF/Main.html, line 89, column 278]
> > > > > > > java.lang.RuntimeException:
> > > > > > > org.apache.tapestry.ioc.internal.util.TapestryException:
> Failure
> > > > > > > writing parameter value of component com.foo.
> > > > > > > pages.Main:brand: Field com.foo.pages.Main.brand is
> read-only. [at
> > > > > > > context:WEB-INF/Main.html, line 89, column 278]
> > > > > > > at
> > > > > > > org.apache.tapestry.corelib.components.Form.onAction(
> Form.java:356)
> > > > > > > at
> > > > > > >
> > > > > org.apache.tapestry.corelib.components.Form.handleComponentEvent
> (Form.
> > > > > > > ja
> > > > > > > va)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.internal.structure.ComponentPageElementImpl.hand
> > > > > > > le
> > > > > > > Ev
> > > > > > > ent(ComponentPageElementImpl.java:903)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.internal.structure.ComponentPageElementImpl.trig
> > > > > > > ge
> > > > > > > rE
> > > > > > > vent(ComponentPageElementImpl.java:1002)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.internal.services.ActionLinkHandlerImpl.handle(A
> > > > > > > ct
> > > > > > > io
> > > > > > > nLinkHandlerImpl.java:100)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.internal.services.ActionLinkHandlerImpl.handle(A
> > > > > > > ct
> > > > > > > io
> > > > > > > nLinkHandlerImpl.java:53)
> > > > > > > at
> > > > > > >
> $ActionLinkHandler_11258c2d07d.handle($ActionLinkHandler_11258c2d07d
> > > > > > > .j
> > > > > > > av
> > > > > > > a)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.internal.services.ComponentActionDispatcher.disp
> > > > > > > at
> > > > > > > ch
> > > > > > > (ComponentActionDispatcher.java:115)
> > > > > > > ... 40 more
> > > > > > > Caused by:
> org.apache.tapestry.ioc.internal.util.TapestryException:
> > > > > > > Failure writing parameter value of component
> > > > > com.foo.pages.Main:brand:
> > > > > > > Field com.foo.pages.Main.brand is read-only. [at
> > > > > > > context:WEB-INF/Main.html, line 89, column 278]
> > > > > > > at
> > > > > > >
> > > > >
> org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.
> > > > > > > wr
> > > > > > > iteParameter(InternalComponentResourcesImpl.java:223)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.corelib.components.Select._$update_parameter_val
> > > > > > > ue
> > > > > > > _0
> > > > > > > (Select.java)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.corelib.components.Select.processSubmission(Sele
> > > > > > > ct
> > > > > > > .j
> > > > > > > ava:238)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.corelib.base.AbstractField.processSubmission(Abs
> > > > > > > tr
> > > > > > > ac
> > > > > > > tField.java:210)
> > > > > > > at
> > > > > > >
> > > > > >
> > > > > org.apache.tapestry.corelib.base.AbstractField.access$100
> (AbstractField.
> > > > > > > java:47)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.corelib.base.AbstractField$ProcessSubmissionActi
> > > > > > > on
> > > > > > > .e
> > > > > > > xecute(AbstractField.java:116)
> > > > > > > at
> > > > > > >
> org.apache.tapestry.corelib.base.AbstractField$ProcessSubmissionActi
> > > > > > > on
> > > > > > > .e
> > > > > > > xecute(AbstractField.java:110)
> > > > > > > at
> > > > > > > org.apache.tapestry.corelib.components.Form.onAction(
> Form.java:347)
> > > > > > > ... 40 more
> > > > > > > Caused by:
> org.apache.tapestry.ioc.internal.util.TapestryException:
> > > > > > > Field com.foo.pages.Main.brand is read-only. [at
> > > > > context:WEB-INF/Main.
> > > > > > > html, line 89, column 278]
> > > > > > > at
> > > > > > > org.apache.tapestry.internal.bindings.PropBinding.set(
> PropBinding.ja
> > > > > > > va
> > > > > > > :7
> > > > > > > 1)
> > > > > > > at
> > > > > > >
> > > > >
> org.apache.tapestry.internal.structure.InternalComponentResourcesImpl.
> > > > > > > wr
> > > > > > > iteParameter(InternalComponentResourcesImpl.java:219)
> > > > > > > ... 47 more
> > > > > > > Caused by: java.lang.RuntimeException: Field
> > > > > > > com.foo.pages.Main.brand is read-only.
> > > > > > > at com.foo.pages.Main._$write_brand(Main.java)
> > > > > > > at com.foo.pages.Main.setBrand(Main.java:92)
> > > > > > > at
> > > > > > >
> $PropertyConduit_11258c2d0a9.set($PropertyConduit_11258c2d0a9.java)
> > > > > > > at
> > > > > > > org.apache.tapestry.internal.bindings.PropBinding.set(
> PropBinding.ja
> > > > > > > va
> > > > > > > :6
> > > > > > > 7)
> > > > > > > ... 48 more
> > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > -----Original Message-----
> > > > > > > From: Howard Lewis Ship [mailto:[EMAIL PROTECTED]
> > > > > > > Sent: Friday, May 04, 2007 2:32 PM
> > > > > > > To: Tapestry users
> > > > > > > Subject: Re: T5: SelectModel - a real world example
> > > > > > >
> > > > > > > In your OptionModel, the label is the Brand description, and
> the
> > > > > > > value
> > > > > >
> > > > > > > is the Brand itself.
> > > > > > >
> > > > > > > You then supply a ValueEncoder that converts between Brands
> and
> > > > > > > brand ids (as strings, for the client side). If Brand is an
> entity
> > > > > > > object, then it may be necessary to have the ValueEncoder
> talk to
> > > > > > > the database
> > > > > >
> > > > > > > or session store.
> > > > > > >
> > > > > > > On 5/4/07, Joel Wiegman <[EMAIL PROTECTED]> wrote:
> > > > > > > >
> > > > > > > > Thanks for the reply Howard.
> > > > > > > >
> > > > > > > > >> The Select component doesn't know how to create a
> client-side
> > > > > > > > representation of a Brand (it doesn't magically know to use
> the
> > > > > id).
> > > > > > > >
> > > > > > > > So, then... I guess my question would be... what is the
> > > > > > > > BrandSelectModel for? In that object, I'm essentially
> mapping a
> > > > > > > > Brand's "description" to the Brand object.
> > > > > > > >
> > > > > > > > Just curious what your thoughts are on that...
> > > > > > > >
> > > > > > > >
> > > > > > > > -----Original Message-----
> > > > > > > > From: Howard Lewis Ship [mailto:[EMAIL PROTECTED]
> > > > > > > > Sent: Friday, May 04, 2007 1:42 PM
> > > > > > > > To: Tapestry users
> > > > > > > > Subject: Re: T5: SelectModel - a real world example
> > > > > > > >
> > > > > > > > In the simplest case, T5 thinks that the options in the
> drop down
> > > > > > > > list
> > > > > > >
> > > > > > > > are all strings.
> > > > > > > >
> > > > > > > > In your case, they are Brands. The Select component
> doesn't know
> > > > > > > > how to create a client-side representation of a Brand (it
> doesn't
> > > > > > > > magically know to use the id).
> > > > > > > >
> > > > > > > > You must provide a ValueEncoder that can convert between
> Brands
> > > > > > > > and client-side string values. This is the encoder
> parameter of
> > > > > > > > the Select component.
> > > > > > > >
> > > > > > > >
> > > > > > > > On 5/4/07, Joel Wiegman <[EMAIL PROTECTED]> wrote:
> > > > > > > > >
> > > > > > > > > Not to be harsh, but I don't think I've ever written a
> select
> > > > > > > > > box with
> > > > > > > >
> > > > > > > > > constant values (Enum). Seems like even Male/Female drop
> downs
> > > > > > > > > need
> > > > > > >
> > > > > > > > > to be data-driven now-a-days. :->
> > > > > > > > >
> > > > > > > > > I've started to stub out a very simple "real world
> example" of a
> > > > >
> > > > > > > > > select component in T5, but it doesn't appear to be as
> simple as
> > > > >
> > > > > > > > > I
> > > > > >
> > > > > > > > > thought it would be.
> > > > > > > > >
> > > > > > > > > A shiny nickel to anyone that can spot the flaw, because
> I sure
> > > > > > > > can't...
> > > > > > > > > I'm new to Tapestry in general so I could be missing
> something
> > > > > > > > > really mundane here, but seems like it should work in my
> mind.
> > > > > > > > >
> > > > > > > > > Here are the players:
> > > > > > > > >
> > > > > > > > > << THE ERROR >>
> > > > > > > > >
> > > > > > > > > [ERROR] DefaultRequestExceptionHandler Processing of
> request
> > > > > > > > > failed with uncaught exception: com.foo.data.Brand cannot
> be
> > > > > > > > > cast to java.lang.String
> > > > > > > > > java.lang.ClassCastException: com.foo.data.Brand cannot
> be cast
> > > > > > > > > to
> > > > > >
> > > > > > > > > java.lang.String
> > > > > > > > > at
> > > > > > > > >
> > > > > > > > org.apache.tapestry.corelib.components.Select$1.toClient(
> Select.ja
> > > > > > > > va
> > > > > > > > :6
> > > > > > > > 2)
> > > > > > > > > at
> > > > > > > > >
> > > > > org.apache.tapestry.corelib.components.Select.writeOptions
> (Select.
> > > > > > > > > ja
> > > > > > > > > va
> > > > > > > > > :1
> > > > > > > > > 94)
> > > > > > > > > at
> > > > > > > > >
> > > > > > > org.apache.tapestry.corelib.components.Select.options(
> Select.java:16
> > > > > > > 9)
> > > > > > > > > at
> > > > > > > > >
> org.apache.tapestry.corelib.components.Select.beforeRenderTempla
> > > > > > > > > te
> > > > > > > > > (S
> > > > > > > > > el
> > > > > > > > > ec
> > > > > > > > > t.java)
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > << Main.html (abridged) >>
> > > > > > > > >
> > > > > > > > > <t:form>
> > > > > > > > > <select t:type="select" t:id="brand"
> value="brand"
> > > > > > > > > model="brandSelectModel"/>
> > > > > > > > > </t:form>
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > << Main.java (abridged) >>
> > > > > > > > >
> > > > > > > > > package com.foo.pages;
> > > > > > > > >
> > > > > > > > > import com.foo.data.Brand;
> > > > > > > > >
> > > > > > > > > public class Main {
> > > > > > > > >
> > > > > > > > > private Brand brand;
> > > > > > > > >
> > > > > > > > > public Brand getBrand() {
> > > > > > > > > return brand;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > public void setBrand(Brand brand) {
> > > > > > > > > this.brand = brand;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > public BrandSelectModel getBrandSelectModel() {
> > > > > > > > > return new BrandSelectModel(getBrands());
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > public List<Brand> getBrands() {
> > > > > > > > > List<Brand> brands = new
> ArrayList<Brand>();
> > > > > > > > > brands.add(new Brand("1", "Brand 1"));
> > > > > > > > > brands.add(new Brand("2", "Brand 2"));
> > > > > > > > > brands.add(new Brand("3", "Brand 3"));
> > > > > > > > > return brands;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > << Brand.java (abridged) >>
> > > > > > > > >
> > > > > > > > > package com.foo.data;
> > > > > > > > >
> > > > > > > > > public class Brand {
> > > > > > > > >
> > > > > > > > > private String id;
> > > > > > > > > private String description;
> > > > > > > > >
> > > > > > > > > public Brand() {}
> > > > > > > > >
> > > > > > > > > public Brand(String id, String description) {
> > > > > > > > > this.id = id;
> > > > > > > > > this.description = description;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > public String getId() {
> > > > > > > > > return id;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > public String getDescription() {
> > > > > > > > > return description;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > << BrandSelectModel.java >>
> > > > > > > > >
> > > > > > > > > package com.foo.uisupport;
> > > > > > > > >
> > > > > > > > > import com.foo.data.Brand;
> > > > > > > > >
> > > > > > > > > public class BrandSelectModel implements SelectModel {
> > > > > > > > >
> > > > > > > > > private List<Brand> brands;
> > > > > > > > >
> > > > > > > > > public BrandSelectModel(List<Brand> brands) {
> > > > > > > > > this.brands = brands;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > public List<OptionGroupModel> getOptionGroups() {
> > > > > > > > > return null;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > public List<OptionModel> getOptions() {
> > > > > > > > > List<OptionModel> optionModelList = new
> > > > > > > > > ArrayList<OptionModel>();
> > > > > > > > > for(Brand brand: brands) {
> > > > > > > > > optionModelList.add(new
> > > > > > > > > OptionModelImpl(brand.getDescription(), false, brand, new
> > > > > > > String[0]));
> > > > > > > > > }
> > > > > > > > > return optionModelList;
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > > }
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> > > > > > > > >
> ----------------------------------------------------------------
> > > > > > > > > --
> > > > > > > > > --
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> [EMAIL PROTECTED]
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> > > > > > > > >
> > > > > > > > >
> > > > > > > >
> > > > > > > >
> > > > > > > > --
> > > > > > > > Howard M. Lewis Ship
> > > > > > > > TWD Consulting, Inc.
> > > > > > > > Independent J2EE / Open-Source Java Consultant Creator and
> PMC
> > > > > > > > Chair, Apache Tapestry Creator, Apache HiveMind
> > > > > > > >
> > > > > > > > Professional Tapestry training, mentoring, support and
> project
> > > > > work.
> > > > > > > > http://howardlewisship.com
> > > > > > > >
> > > > > > > >
> ------------------------------------------------------------------
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> > > > > > > >
> > > > > > > >
> > > > > > >
> > > > > > >
> > > > > > > --
> > > > > > > Howard M. Lewis Ship
> > > > > > > TWD Consulting, Inc.
> > > > > > > Independent J2EE / Open-Source Java Consultant Creator and
> PMC
> > > > > > > Chair, Apache Tapestry Creator, Apache HiveMind
> > > > > > >
> > > > > > > Professional Tapestry training, mentoring, support and
> project work.
> > > > > > > http://howardlewisship.com
> > > > > > >
> > > > > > >
> --------------------------------------------------------------------
> > > > > > > - To unsubscribe, e-mail:
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> [EMAIL PROTECTED]
> > > > > > >
> > > > > > >
> > > > > >
> > > > > >
> > > > > > --
> > > > > > Howard M. Lewis Ship
> > > > > > TWD Consulting, Inc.
> > > > > > Independent J2EE / Open-Source Java Consultant Creator and PMC
> Chair,
> > > > > > Apache Tapestry Creator, Apache HiveMind
> > > > > >
> > > > > > Professional Tapestry training, mentoring, support and project
> work.
> > > > > > http://howardlewisship.com
> > > > > >
> > > > > >
> ---------------------------------------------------------------------
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> > > > > >
> > > > > >
> > > > >
> > > > >
> > > > > --
> > > > > Howard M. Lewis Ship
> > > > > TWD Consulting, Inc.
> > > > > Independent J2EE / Open-Source Java Consultant Creator and PMC
> Chair,
> > > > > Apache Tapestry Creator, Apache HiveMind
> > > > >
> > > > > Professional Tapestry training, mentoring, support and project
> work.
> > > > > http://howardlewisship.com
> > > > >
> > > > >
> ---------------------------------------------------------------------
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> > > > >
> > > > >
> > > >
> > > >
> > > > --
> > > > "The future is here. It's just not evenly distributed yet."
> > > >
> > > > -- Traditional
> > > >
> > > >
> ---------------------------------------------------------------------
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> > > > For additional commands, e-mail: [EMAIL PROTECTED]
> > > >
> > > >
> > >
> > >
> > > --
> > > Howard M. Lewis Ship
> > > TWD Consulting, Inc.
> > > Independent J2EE / Open-Source Java Consultant
> > > Creator and PMC Chair, Apache Tapestry
> > > Creator, Apache HiveMind
> > >
> > > Professional Tapestry training, mentoring, support
> > > and project work. http://howardlewisship.com
> > >
> >
> >
> > --
> >
> >
> > "The future is here. It's just not evenly distributed yet."
> >
> > -- Traditional
> >
> > ---------------------------------------------------------------------
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> >
> >
>
>
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>
>
--
Atenciosamente,
Marcelo Lotif
